Additive Manufactoring - Contributi utente [it]

Development of a multifunctional panel for aerospace

2020-01-08T17:39:16Z

SaraCozzani:

'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing .

'''Authors and full affiliations:''' Michele Bicia, Salvatore Brischettob, Francesca Campanaa, Carlo Giovanni Ferrob, Carlo Seclìc, Sara Varettib,d, Paolo Maggioreb, Andrea Mazzab , ''aSapienza Università di Roma, Via Eudossiana 18, 00184 Roma; bPolitecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino ;cAltair Engineering, Via Livorno 60, 10144 Torino; d3D- New Technologies (3D-NT), via Livorno 60, 10144, Torino .''

'''Keywords:''' DOE ; Metamodeling; Pareto optimality; Virtual prototyping; Response surface;

'''Purpose:''' The aim is to understand which design variable affect mainly the mechanical behavior of a multifunctional sandwich panel.

'''Methodology:''' To establish whether of the design variable affects majorly the mechanical resistance of the sandwich panel, a Design of Experiment (DOE) has been designed. DOE method has been applied through FEM simulations on a NACA profile, using real loads from aerodynamic simulations. FEM model considers the outer skins modelled as shells and the lattice core made by beams. So that, DOE design variables considered in the present work are: cell type, cell length, beam section radius, shell thickness. FEM geometry (cell type and length) was set-up through a MATLAB code designed for automatize the FEM pre-processing.

'''Findings:''' From the Pareto frontier of the problem, optimal solutions were evaluated. To optimize mass and 1st frequency beam radius can be set between 0.35 and 0.40 passing from cell_1 to cell_2_ in case of length_5, from 0.47 to 0.50 in case of length_7. Shell thickness, with the same type of progression, changed from 0.52 to 0.40.

'''Benefits:''' The adopted DOE allowed to build a full quadratic response surface that was used to optimize mass and frequency, leaving the maximum stresses under a threshold safe for yielding.

'''Grafical Abstract:'''
[[File:' ' 'Graphical abstract ' ' '.png|centro|miniatura|Layout of a P180 anti-ice system]]

'''Full reference:''' Michele Bici, Salvatore Brischetto, Francesca Campana, Carlo Giovanni Ferro, Carlo Seclì, Sara Varetti, Paolo Maggiore, Andrea Mazza, Development of a multifunctional panel for aerospace use through SLM additive manufacturing, ''Procedia CIRP'', Volume 67,2018, Pages 215-220.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311460

Design for manufacturing of surfaces to improve accuracy

2020-01-08T17:37:40Z

SaraCozzani:

'''Title:''' Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling

'''Authors and full affiliations:''' Alberto Boschetto, Luana Bottini, ''Department of Mechanical and Aerospace Engineering, University of Rome La Sapienza, Via Eudossiana 18, 00184 Rome, Italy .''

'''Keywords:''' Fused Deposition Modeling; Accuracy improvement; Design for manufacturing .

'''Purpose:''' The aim of this work is the development of a virtual model preprocessing in order to compensate the deviations introduced by the physical fabrication found in the Fused Deposition Modeling.

'''Methodology:''' The idea, in order to compensate the deterministic dimensional deviation introduced during the physical fabrication, is to offset this starting surface by considering a sphere R in radius around the generic point P. The offset surface is generated as the envelope of all the spheres centered in each point of the surface. This mathematical operation corresponds to the displacement by R of the point P along the normal . Starting from the equation of a generic point of the offset surface by doing various calculations, which are found in the whole article, we arrive at the final formulation . The application of this equation to all the surface points allows obtaining a deformed model that permits to compensate the deviations introduced by the physical fabrication. Then the abovementioned methodology has been applied to three case studies: a cylinder, a spherical joint and a fan blade.

'''Benefits:''' With this method it’s no necessary to correct and perform measurement in order to gain the model information and it can be directly used before CAM environment.

'''Findings:''' All the components have been defined by mathematical formulations and fabricated before and after the application of the methodology. The performed dimensional measurements pointed out a marked reduction of the dimensional deviations after the DFM: both for simple and complex geometries the pre-processing of the virtual model permitted to obtain dimensional values very close to nominal ones.

'''Grafical Abstract:''' [[File:Image3.png|centro|miniatura]]

'''Full reference:''' Alberto Boschetto, Luana Bottini, Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling, ''Robotics and Computer-Integrated Manufacturing'' , Volume 37, February 2016, Pages 103-114.

'''Link:''' https://www.sciencedirect.com/science/article/abs/pii/S0736584515000848

Development of a multifunctional panel for aerospace

2020-01-08T17:27:11Z

SaraCozzani:

'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing .

'''Authors and full affiliations:''' Michele Bicia, Salvatore Brischettob, Francesca Campanaa, Carlo Giovanni Ferrob, Carlo Seclìc, Sara Varettib,d, Paolo Maggioreb, Andrea Mazzab , ''aSapienza Università di Roma, Via Eudossiana 18, 00184 Roma; bPolitecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino ;cAltair Engineering, Via Livorno 60, 10144 Torino; d3D- New Technologies (3D-NT), via Livorno 60, 10144, Torino .''

'''Keywords:''' DOE ; Metamodeling; Pareto optimality; Virtual prototyping; Response surface;

'''Purpose:''' The aim is to different models of cells type and different skin thicknesses to understand which design variable affect mainly the mechanical behavior for a multifunctional sandwich behavior.

'''Methodology:''' To establish whether of the design variable affects majorly the mechanical resistance of the sandwich panel, a Design of Experiment (DOE) has been designed. DOE method has been applied through FEM simulations on a NACA profile, using real loads from aerodynamic simulations. FEM model considers the outer skins modelled as shells and the lattice core made by beams. So that, DOE design variables considered in the present work are: cell type, cell length, beam section radius, shell thickness. FEM geometry (cell type and length) was set-up through a MATLAB code designed for automatize the FEM pre-processing.

'''Findings:''' From the Pareto frontier of the problem, optimal solutions were evaluated. To optimize mass and 1st frequency beam radius can be set between 0.35 and 0.40 passing from cell_1 to cell_2_ in case of length_5, from 0.47 to 0.50 in case of length_7. Shell thickness, with the same type of progression, changed from 0.52 to 0.40.

'''Benefits:''' The adopted DOE allowed to build a full quadratic response surface that was used to optimize mass and frequency, leaving the maximum stresses under a threshold safe for yielding.

'''Grafical Abstract:'''
[[File:' ' 'Graphical abstract ' ' '.png|centro|miniatura|Layout of a P180 anti-ice system]]

'''Full reference:''' Michele Bici, Salvatore Brischetto, Francesca Campana, Carlo Giovanni Ferro, Carlo Seclì, Sara Varetti, Paolo Maggiore, Andrea Mazza, Development of a multifunctional panel for aerospace use through SLM additive manufacturing, ''Procedia CIRP'', Volume 67,2018, Pages 215-220.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311460

Design for manufacturing of surfaces to improve accuracy

2020-01-08T17:16:05Z

SaraCozzani:

'''Title:''' Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling

'''Authors and full affiliations:''' Alberto Boschetto, Luana Bottini, ''Department of Mechanical and Aerospace Engineering, University of Rome La Sapienza, Via Eudossiana 18, 00184 Rome, Italy .''

'''Keywords:''' Fused Deposition Modeling; Accuracy improvement; Design for manufacturing .

'''Purpose:''' The aim of this work is the development of a virtual model preprocessing in order to compensate for the deterministic behavior found in the Fused Deposition Modeling.

'''Methodology:''' The idea, in order to compensate the deterministic dimensional deviation introduced during the physical fabrication, is to offset this starting surface by considering a sphere R in radius around the generic point P. The offset surface is generated as the envelope of all the spheres centered in each point of the surface. This mathematical operation corresponds to the displacement by R of the point P along the normal . Starting from the equation of a generic point of the offset surface by doing various calculations, which are found in the whole article, we arrive at the final formulation . The application of this equation to all the surface points allows obtaining a deformed model that permits to compensate the deviations introduced by the physical fabrication. Then the abovementioned methodology has been applied to three case studies: a cylinder, a spherical joint and a fan blade.

'''Benefits:''' With this method it’s no necessary to correct and perform measurement in order to gain the model information and it can be directly used before CAM environment.

'''Findings:''' All the components have been defined by mathematical formulations and fabricated before and after the application of the methodology. The performed dimensional measurements pointed out a marked reduction of the dimensional deviations after the DFM: both for simple and complex geometries the pre-processing of the virtual model permitted to obtain dimensional values very close to nominal ones.

'''Grafical Abstract:''' [[File:Image3.png|centro|miniatura]]

'''Full reference:''' Alberto Boschetto, Luana Bottini, Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling, ''Robotics and Computer-Integrated Manufacturing'' , Volume 37, February 2016, Pages 103-114.

'''Link:''' https://www.sciencedirect.com/science/article/abs/pii/S0736584515000848

Design for AM for Selective Laser Melting

2020-01-08T17:00:59Z

SaraCozzani: Creata pagina con "Hinge re-design"

[[Hinge re-design]]

Selective Laser Melting Parts

2020-01-08T17:00:44Z

SaraCozzani:

* [[Design for AM for Selective Laser Melting ]]

Design for manufacturing of surfaces to improve accuracy

2020-01-08T16:53:57Z

SaraCozzani:

'''Title:''' Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling

'''Authors and full affiliations:''' Alberto Boschetto, Luana Bottini, ''Department of Mechanical and Aerospace Engineering, University of Rome La Sapienza, Via Eudossiana 18, 00184 Rome, Italy .''

'''Keywords:''' Fused Deposition Modeling; Accuracy improvement; Design for manufacturing .

'''Purpose:''' The aim of this work is the development of a virtual model preprocessing in order to compensate for the deterministic behavior found in the Fused Deposition Modeling.

'''Methodology:''' The idea, in order to compensate the deterministic dimensional deviation introduced during the physical fabrication, is to offset this starting surface by considering a sphere R in radius around the generic point P. The offset surface is generated as the envelope of all the spheres centered in each point of the surface. This mathematical operation corresponds to the displacement by R of the point P along the normal . Starting from the equation of a generic point of the offset surface by doing various calculations, which are found in the whole article, we arrive at the final formulation . The application of this equation to all the surface points allows obtaining a deformed model that permits to compensate the deviations introduced by the physical fabrication. Then the abovementioned methodology has been applied to three case studies: a cylinder, a spherical joint and a fan blade.

'''Benefits:''' With this method it’s no necessary to fabricate artifact and perform measurement in order to gain the model information and it can be directly used before CAM environment.

'''Findings:''' All the components have been defined by mathematical formulations and fabricated before and after the application of the methodology. The performed dimensional measurements pointed out a marked reduction of the dimensional deviations after the DFM: both for simple and complex geometries the pre-processing of the virtual model permitted to obtain dimensional values very close to nominal ones.

'''Grafical Abstract:''' [[File:Image3.png|centro|miniatura]]

'''Full reference:''' Alberto Boschetto, Luana Bottini, Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling, ''Robotics and Computer-Integrated Manufacturing'' , Volume 37, February 2016, Pages 103-114.

'''Link:''' https://www.sciencedirect.com/science/article/abs/pii/S0736584515000848

Design for AM - SLM

2020-01-08T16:49:18Z

SaraCozzani: Creata pagina con "Hinge re-design"

[[Hinge re-design]]

Selective Laser Melting Parts

2020-01-08T16:48:58Z

SaraCozzani:

* [[Design for AM - SLM ]]

Design for AM

2020-01-08T16:48:27Z

SaraCozzani:

[[Hinge re-design]]

Design for manufacturing of surfaces to improve accuracy

2020-01-08T11:20:15Z

SaraCozzani: Creata pagina con "'''Title:''' Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling '''Authors and full affiliations:''' Alberto Boschetto, Luana Bottini,..."

'''Title:''' Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling

'''Authors and full affiliations:''' Alberto Boschetto, Luana Bottini, ''Department of Mechanical and Aerospace Engineering, University of Rome La Sapienza, Via Eudossiana 18, 00184 Rome, Italy .''

'''Keywords:''' Fused Deposition Modeling; Accuracy improvement; Design for manufacturing .

'''Purpose:''' The aim of this work is the development of a virtual model preprocessing in order to compensate for the deterministic behavior found in the Fused Decomposition Modeling.

'''Methodology:''' The idea, in order to compensate the deterministic dimensional deviation introduced during the physical fabrication, is to offset this starting surface by considering a sphere R in radius around the generic point P. The offset surface is generated as the envelope of all the spheres centered in each point of the surface. This mathematical operation corresponds to the displacement by R of the point P along the normal . Starting from the equation of a generic point of the offset surface by doing various calculations, which are found in the whole article, we arrive at the final formulation . The application of this equation to all the surface points allows obtaining a deformed model that permits to compensate the deviations introduced by the physical fabrication. Then the abovementioned methodology has been applied to three case studies: a cylinder, a spherical joint and a fan blade.

'''Benefits:''' With this method it’s no necessary to fabricate artifact and perform measurement in order to gain the model information and it can be directly used before CAM environment.

'''Findings:''' All the components have been defined by mathematical formulations and fabricated before and after the application of the methodology. The performed dimensional measurements pointed out a marked reduction of the dimensional deviations after the DFM: both for simple and complex geometries the pre-processing of the virtual model permitted to obtain dimensional values very close to nominal ones.

'''Grafical Abstract:''' [[File:Image3.png|centro|miniatura]]

'''Full reference:''' Alberto Boschetto, Luana Bottini, Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling, ''Robotics and Computer-Integrated Manufacturing'' , Volume 37, February 2016, Pages 103-114.

'''Link:''' https://www.sciencedirect.com/science/article/abs/pii/S0736584515000848

Main Page

2020-01-08T11:12:15Z

SaraCozzani: /* Parts */

=[[Materials]]=
=[[Processes]]=
*[[Fused Deposition Modeling]]
*[[Laser Machining]]
*[[Material Jetting]]
*[[Vat Polymerization]]
*[[Selective Laser Melting]]

=[[Parts]]=
*[[Design for AM]]

[[Speciale:CreaUtenza]]

Fused Deposition Modeling

2020-01-08T11:11:00Z

SaraCozzani:

[[Design for manufacturing of surfaces to improve accuracy]]

Development of a multifunctional panel for aerospace

2020-01-08T11:09:51Z

SaraCozzani:

'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing .

'''Authors and full affiliations:''' Michele Bicia, Salvatore Brischettob, Francesca Campanaa, Carlo Giovanni Ferrob, Carlo Seclìc, Sara Varettib,d, Paolo Maggioreb, Andrea Mazzab , ''aSapienza Università di Roma, Via Eudossiana 18, 00184 Roma; bPolitecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino ;cAltair Engineering, Via Livorno 60, 10144 Torino; d3D- New Technologies (3D-NT), via Livorno 60, 10144, Torino .''

'''Keywords:''' DOE ; Metamodeling; Pareto optimality; Virtual prototyping; Response surface;

'''Purpose:''' The aim is to investigate an innovative solution for a multifunctional sandwich panel. Moreover ,a specific objective of this paper is to test different models of cells type and different skin thicknesses to understand which design variable affect mainly the mechanical behavior .

'''Methodology:''' To establish whether of the design variable affects majorly the mechanical resistance of the sandwich panel, a Design of Experiment (DOE) has been designed. DOE method has been applied through FEM simulations on a NACA profile, using real loads from aerodynamic simulations. FEM model considers the outer skins modelled as shells and the lattice core made by beams. So that, DOE design variables considered in the present work are: cell type, cell length, beam section radius, shell thickness. FEM geometry (cell type and length) was set-up through a MATLAB code designed for automatize the FEM pre-processing.

'''Findings:''' From the Pareto frontier of the problem, optimal solutions were evaluated. To optimize mass and 1st frequency beam radius can be set between 0.35 and 0.40 passing from cell_1 to cell_2_ in case of length_5, from 0.47 to 0.50 in case of length_7. Shell thickness, with the same type of progression, changed from 0.52 to 0.40.

'''Benefits:''' The adopted DOE allowed to build a full quadratic response surface that was used to optimize mass and frequency, leaving the maximum stresses under a threshold safe for yielding.

'''Grafical Abstract:'''
[[File:' ' 'Graphical abstract ' ' '.png|centro|miniatura|Layout of a P180 anti-ice system]]

'''Full reference:''' Michele Bici, Salvatore Brischetto, Francesca Campana, Carlo Giovanni Ferro, Carlo Seclì, Sara Varetti, Paolo Maggiore, Andrea Mazza, Development of a multifunctional panel for aerospace use through SLM additive manufacturing, ''Procedia CIRP'', Volume 67,2018, Pages 215-220.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311460

Development of a multifunctional panel for aerospace

2020-01-08T11:09:00Z

SaraCozzani: Creata pagina con "'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing . '''Authors and full affiliations:''' Michele Bicia, Sal..."

'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing .

'''Authors and full affiliations:''' Michele Bicia, Salvatore Brischettob, Francesca Campanaa, Carlo Giovanni Ferrob, Carlo Seclìc, Sara Varettib,d, Paolo Maggioreb, Andrea Mazzab , ''aSapienza Università di Roma, Via Eudossiana 18, 00184 Roma; bPolitecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino ;cAltair Engineering, Via Livorno 60, 10144 Torino; d3D- New Technologies (3D-NT), via Livorno 60, 10144, Torino .''

'''Keywords:''' DOE ; Metamodeling; Pareto optimality; Virtual prototyping; Response surface;

'''Purpose:''' The aim is to investigate an innovative solution for a multifunctional sandwich panel. Moreover ,a specific objective of this paper is to test different models of cells type and different skin thicknesses to understand which design variable affect mainly the mechanical behavior .

'''Methodology:''' To establish whether of the design variable affects majorly the mechanical resistance of the sandwich panel, a Design of Experiment (DOE) has been designed. DOE method has been applied through FEM simulations on a NACA profile, using real loads from aerodynamic simulations. FEM model considers the outer skins modelled as shells and the lattice core made by beams. So that, DOE design variables considered in the present work are: cell type, cell length, beam section radius, shell thickness. FEM geometry (cell type and length) was set-up through a MATLAB code designed for automatize the FEM pre-processing.

'''Findings:''' From the Pareto frontier of the problem, optimal solutions were evaluated. To optimize mass and 1st frequency beam radius can be set between 0.35 and 0.40 passing from cell_1 to cell_2_ in case of length_5, from 0.47 to 0.50 in case of length_7. Shell thickness, with the same type of progression, changed from 0.52 to 0.40.

'''Benefits:''' The adopted DOE allowed to build a full quadratic response surface that was used to optimize mass and frequency, leaving the maximum stresses under a threshold safe for yielding.

'''Grafical Abstract:'''
[[File:' ' 'Graphical abstract ' ' '.png|centro|miniatura|Layout of a P180 anti-ice system]]

'''Full reference:''' Michele Bici, Salvatore Brischetto, Francesca Campana, Carlo Giovanni Ferro, Carlo Seclì, Sara Varetti, Paolo Maggiore, Andrea Mazza, Development of a multifunctional panel for aerospace use through SLM additive manufacturing, ''Procedia CIRP'', Volume 67,2018, Pages 215-220.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311460

Process Optimization

2020-01-08T11:07:33Z

SaraCozzani: Pagina sostituita con 'Development of a multifunctional panel for aerospace'

[[Development of a multifunctional panel for aerospace]]

Hinge re-design

2020-01-08T11:05:12Z

SaraCozzani:

'''Title:''' A Cubesat’s hinge re-design for Selective Laser Melting

'''Authors and full affiliations:''' Alberto Boschettoa , Luana Bottinia , Valerio Cardinia, Marco Eugeni a, Paolo Gaudenziaa , Gabriel Graterol Nisib, Francesco Venialiaa, ''aDepartment of Mechanical and Aerospace Engineering, University of Rome “La Sapienza”, via Eudossiana 18, 00184, Rome, Italy ; bSmart Structures Solution, Via Luciano Manara 51, 00153, Rome, Italy .''

'''Keywords:''' CubeSat; Design for additive manufacturing; Design for assembly; Nanosatellites ;Selective Laser Melting.

'''Purpose:''' This work points AM out as a key technology allowing for a drastic reduction of the part count for a mechanical system, taking Design for Assembly (DFA) guidelines to the extreme. It underlines the need to consider AM-related constrains already in the design phase, such as the clearance and the shape of the hinge and the snap joint matching SLM specific constraints such as support structures design and removal planning, part orientation in the building platform, and hollowing out for powder removal.

'''Methodology:''' This paper follows the Design for Additive Manufacturing (DFAM) and Design for Assembly (DFA) methodologies.

'''Findings:''' The already-assembled, fasteners-free mock-up demonstrates AM as a key technology to take DFA guidelines to the extreme. The increased complexity of the parts, integrating the features and the hinge, does not compromise the fabrication process. Considering the assembly-related cost saving entailed in a part-consolidated design, this works makes AM closer to the small satellites market, envisioning constellations made of many satellites.

'''Benefits:''' The structure is made of two parts joined by a hinge, making the system an already assembled one. In this way there was an assembly-related cost saving.

'''Grafical Abstract:
[[File:Image4.png|senza_cornice|centro]]

'''Full reference:''' Alberto Boschetto, Luana Bottini, Valerio Cardini, Marco Eugeni , Paolo Gaudenzia, Gabriel Graterol Nisi, Francesco Venialia , Selective Laser Melting of a 1U CubeSat structure. Design for Additive Manufacturing and assembly, ''Acta Astronautica'' , Volume 159 , June 2019, Pages 377-384.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S0094576518317673

Hinge re-design

2020-01-08T11:04:22Z

SaraCozzani:

'''Title:''' A Cubesat’s hinge re-design for Selective Laser Melting

'''Authors and full affiliations:''' Alberto Boschettoa , Luana Bottinia , Valerio Cardinia, Marco Eugeni a, Paolo Gaudenziaa , Gabriel Graterol Nisib, Francesco Venialiaa, ''aDepartment of Mechanical and Aerospace Engineering, University of Rome “La Sapienza”, via Eudossiana 18, 00184, Rome, Italy ; bSmart Structures Solution, Via Luciano Manara 51, 00153, Rome, Italy .''

'''Keywords:''' CubeSat; Design for additive manufacturing; Design for assembly; Nanosatellites ;Selective Laser Melting.

'''Purpose:''' This work points AM out as a key technology allowing for a drastic reduction of the part count for a mechanical system, taking Design for Assembly (DFA) guidelines to the extreme. It underlines the need to consider AM-related constrains already in the design phase, such as the clearance and the shape of the hinge and the snap joint matching SLM specific constraints such as support structures design and removal planning, part orientation in the building platform, and hollowing out for powder removal.

'''Methodology:''' This paper follows the Design for Additive Manufacturing (DFAM) and Design for Assembly (DFA) methodologies.

'''Findings:''' The already-assembled, fasteners-free mock-up demonstrates AM as a key technology to take DFA guidelines to the extreme. The increased complexity of the parts, integrating the features and the hinge, does not compromise the fabrication process. Considering the assembly-related cost saving entailed in a part-consolidated design, this works makes AM closer to the small satellites market, envisioning constellations made of many satellites.

'''Benefits:''' The structure is made of two parts joined by a hinge, making the system an already assembled one. In this way there was an assembly-related cost saving.

'''Grafical Abstract:
[[File:Image4.png|senza_cornice|centro]]

'''Full reference:''' Alberto Boschetto, Luana Bottini, Valerio Cardini, Marco Eugeni , Paolo Gaudenzia, Gabriel Graterol Nisi, Francesco Venialia , Selective Laser Melting of a 1U CubeSat structure. Design for Additive Manufacturing and assembly, Acta Astronautica , Volume 159 , June 2019, Pages 377-384.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S0094576518317673

Design for manufacturing of surface to improve accuracy

2020-01-08T10:56:52Z

SaraCozzani:

'''Title:''' Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling

'''Authors and full affiliations:''' Alberto Boschetto, Luana Bottini, ''Department of Mechanical and Aerospace Engineering, University of Rome La Sapienza, Via Eudossiana 18, 00184 Rome, Italy .''

'''Keywords:''' Fused Deposition Modeling; Accuracy improvement; Design for manufacturing .

'''Purpose:''' The aim of this work is the development of a virtual model preprocessing in order to compensate for the deterministic behavior found in the Fused Decomposition Modeling.

'''Methodology:''' The idea, in order to compensate the deterministic dimensional deviation introduced during the physical fabrication, is to offset this starting surface by considering a sphere R in radius around the generic point P. The offset surface is generated as the envelope of all the spheres centered in each point of the surface. This mathematical operation corresponds to the displacement by R of the point P along the normal . Starting from the equation of a generic point of the offset surface by doing various calculations, which are found in the whole article, we arrive at the final formulation . The application of this equation to all the surface points allows obtaining a deformed model that permits to compensate the deviations introduced by the physical fabrication. Then the abovementioned methodology has been applied to three case studies: a cylinder, a spherical joint and a fan blade.

'''Benefits:''' With this method it’s no necessary to fabricate artifact and perform measurement in order to gain the model information and it can be directly used before CAM environment.

'''Findings:''' All the components have been defined by mathematical formulations and fabricated before and after the application of the methodology. The performed dimensional measurements pointed out a marked reduction of the dimensional deviations after the DFM: both for simple and complex geometries the pre-processing of the virtual model permitted to obtain dimensional values very close to nominal ones.

'''Grafical Abstract:''' [[File:Image3.png|centro|miniatura]]

'''Full reference:''' Alberto Boschetto, Luana Bottini, Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling, ''Robotics and Computer-Integrated Manufacturing'' , Volume 37, February 2016, Pages 103-114.

'''Link:''' https://www.sciencedirect.com/science/article/abs/pii/S0736584515000848

Design for manufacturing of surface to improve accuracy

2020-01-08T10:56:21Z

SaraCozzani:

'''Title:''' Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling

'''Authors and full affiliations:''' Alberto Boschetto, Luana Bottini, ''Department of Mechanical and Aerospace Engineering, University of Rome La Sapienza, Via Eudossiana 18, 00184 Rome, Italy .''

'''Keywords:''' Fused Deposition Modeling; Accuracy improvement; Design for manufacturing .

'''Purpose:''' The aim of this work is the development of a virtual model preprocessing in order to compensate for the deterministic behavior found in the Fused Decomposition Modeling.

'''Methodology:''' The idea, in order to compensate the deterministic dimensional deviation introduced during the physical fabrication, is to offset this starting surface by considering a sphere R in radius around the generic point P. The offset surface is generated as the envelope of all the spheres centered in each point of the surface. This mathematical operation corresponds to the displacement by R of the point P along the normal . Starting from the equation of a generic point of the offset surface by doing various calculations, which are found in the whole article, we arrive at the final formulation . The application of this equation to all the surface points allows obtaining a deformed model that permits to compensate the deviations introduced by the physical fabrication. Then the abovementioned methodology has been applied to three case studies: a cylinder, a spherical joint and a fan blade.

'''Benefits:''' With this method it’s no necessary to fabricate artifact and perform measurement in order to gain the model information and it can be directly used before CAM environment.

'''Findings:''' All the components have been defined by mathematical formulations and fabricated before and after the application of the methodology. The performed dimensional measurements pointed out a marked reduction of the dimensional deviations after the DFM: both for simple and complex geometries the pre-processing of the virtual model permitted to obtain dimensional values very close to nominal ones.

'''Grafical Abstract:''' [[File:Image3.png|centro|miniatura]]

'''Full reference:''' Alberto Boschetto, Luana Bottini, Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling, ''Robotics and Computer-Integrated Manufacturing'' , Volume 37, February 2016, Pages 103-114.

'''Link:''' https://www.sciencedirect.com/science/article/abs/pii/S0736584515000848

Design for manufacturing of surface to improve accuracy

2020-01-07T16:30:23Z

SaraCozzani:

'''Title:''' Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling

'''Authors and full affiliations:''' Alberto Boschetto, Luana Bottini, ''Department of Mechanical and Aerospace Engineering, University of Rome La Sapienza, Via Eudossiana 18, 00184 Rome, Italy .''

'''Keywords:''' Fused Deposition Modeling; Accuracy improvement; Design for manufacturing .

'''Purpose:''' The aim of this work is the development of a virtual model preprocessing in order to compensate for the deterministic behavior found in the Fused Decomposition Modeling.

'''Methodology:''' The idea, in order to compensate the deterministic dimensional deviation introduced during the physical fabrication, is to offset this starting surface by considering a sphere R in radius around the generic point P. The offset surface is generated as the envelope of all the spheres centered in each point of the surface. This mathematical operation corresponds to the displacement by R of the point P along the normal . Starting from the equation of a generic point of the offset surface by doing various calculations, which are found in the whole article, we arrive at the final formulation . The application of this equation to all the surface points allows obtaining a deformed model that permits to compensate the deviations introduced by the physical fabrication. Then the abovementioned methodology has been applied to three case studies: a cylinder, a spherical joint and a fan blade.

'''Benefits:''' With this method it’s no necessary to fabricate artifact and perform measurement in order to gain the model information and it can be directly used before CAM environment.

'''Findings:''' All the components have been defined by mathematical formulations and fabricated before and after the application of the methodology. The performed dimensional measurements pointed out a marked reduction of the dimensional deviations after the DFM: both for simple and complex geometries the pre-processing of the virtual model permitted to obtain dimensional values very close to nominal ones.

'''Grafical Abstract:''' [[File:Image3.png|centro|miniatura]]

'''Full reference:''' Alberto Boschetto, Luana Bottini, Selective Laser Melting of a 1U CubeSat structure. Design for Additive Manufacturing and assembly, Robotics and Computer-Integrated Manufacturing , Volume 37, February 2016, Pages 103-114.

'''Link:''' https://www.sciencedirect.com/science/article/abs/pii/S0736584515000848

Process Optimization

2020-01-07T16:27:19Z

SaraCozzani:

'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing .

'''Authors and full affiliations:''' Michele Bicia, Salvatore Brischettob, Francesca Campanaa, Carlo Giovanni Ferrob, Carlo Seclìc, Sara Varettib,d, Paolo Maggioreb, Andrea Mazzab , aSapienza Università di Roma, Via Eudossiana 18, 00184 Roma; bPolitecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino ;cAltair Engineering, Via Livorno 60, 10144 Torino; d3D- New Technologies (3D-NT), via Livorno 60, 10144, Torino .

'''Keywords:''' DOE ; Metamodeling; Pareto optimality; Virtual prototyping; Response surface;

'''Purpose:''' The aim is to investigate an innovative solution for a multifunctional sandwich panel. Moreover ,a specific objective of this paper is to test different models of cells type and different skin thicknesses to understand which design variable affect mainly the mechanical behavior .

'''Methodology:''' To establish whether of the design variable affects majorly the mechanical resistance of the sandwich panel, a Design of Experiment (DOE) has been designed. DOE method has been applied through FEM simulations on a NACA profile, using real loads from aerodynamic simulations. FEM model considers the outer skins modelled as shells and the lattice core made by beams. So that, DOE design variables considered in the present work are: cell type, cell length, beam section radius, shell thickness. FEM geometry (cell type and length) was set-up through a MATLAB code designed for automatize the FEM pre-processing.

'''Findings:''' From the Pareto frontier of the problem, optimal solutions were evaluated. To optimize mass and 1st frequency beam radius can be set between 0.35 and 0.40 passing from cell_1 to cell_2_ in case of length_5, from 0.47 to 0.50 in case of length_7. Shell thickness, with the same type of progression, changed from 0.52 to 0.40.

'''Benefits:''' The adopted DOE allowed to build a full quadratic response surface that was used to optimize mass and frequency, leaving the maximum stresses under a threshold safe for yielding.

'''Grafical Abstract:'''
[[File:' ' 'Graphical abstract ' ' '.png|centro|miniatura|Layout of a P180 anti-ice system]]

'''Full reference:''' Michele Bici, Salvatore Brischetto, Francesca Campana, Carlo Giovanni Ferro, Carlo Seclì, Sara Varetti, Paolo Maggiore, Andrea Mazza, Development of a multifunctional panel for aerospace use through SLM additive manufacturing, Procedia CIRP, Volume 67,2018, Pages 215-220.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311460

Process Optimization

2020-01-07T16:26:31Z

SaraCozzani:

'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing .

'''Authors and full affiliations:''' Michele Bicia, Salvatore Brischettob, Francesca Campanaa, Carlo Giovanni Ferrob, Carlo Seclìc, Sara Varettib,d, Paolo Maggioreb, Andrea Mazzab , aSapienza Università di Roma, Via Eudossiana 18, 00184 Roma; bPolitecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino ;cAltair Engineering, Via Livorno 60, 10144 Torino; d3D- New Technologies (3D-NT), via Livorno 60, 10144, Torino .

'''Keywords:''' DOE ; Metamodeling; Pareto optimality; Virtual prototyping; Response surface;

'''Purpose:''' The aim is to investigate an innovative solution for a multifunctional sandwich panel. Moreover ,a specific objective of this paper is to test different models of cells type and different skin thicknesses to understand which design variable affect mainly the mechanical behavior .

'''Methodology:''' To establish whether of the design variable affects majorly the mechanical resistance of the sandwich panel, a Design of Experiment (DOE) has been designed. DOE method has been applied through FEM simulations on a NACA profile, using real loads from aerodynamic simulations. FEM model considers the outer skins modelled as shells and the lattice core made by beams. So that, DOE design variables considered in the present work are: cell type, cell length, beam section radius, shell thickness. FEM geometry (cell type and length) was set-up through a MATLAB code designed for automatize the FEM pre-processing.

'''Findings:''' From the Pareto frontier of the problem, optimal solutions were evaluated. To optimize mass and 1st frequency beam radius can be set between 0.35 and 0.40 passing from cell_1 to cell_2_ in case of length_5, from 0.47 to 0.50 in case of length_7. Shell thickness, with the same type of progression, changed from 0.52 to 0.40.

'''Benefits:''' The adopted DOE allowed to build a full quadratic response surface that was used to optimize mass and frequency, leaving the maximum stresses under a threshold safe for yielding.

'''Grafical Abstract:'''
[[File:' ' 'Graphical abstract ' ' '.png|centro|miniatura]]

'''Full reference:''' Michele Bici, Salvatore Brischetto, Francesca Campana, Carlo Giovanni Ferro, Carlo Seclì, Sara Varetti, Paolo Maggiore, Andrea Mazza, Development of a multifunctional panel for aerospace use through SLM additive manufacturing, Procedia CIRP, Volume 67,2018, Pages 215-220.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311460

Hinge re-design

2020-01-07T16:22:13Z

SaraCozzani: Creata pagina con "'''Title:''' A Cubesat’s hinge re-design for Selective Laser Melting '''Authors and full affiliations:''' Alberto Boschettoa , Luana Bottinia , Valerio Cardinia, Marco Eu..."

'''Title:''' A Cubesat’s hinge re-design for Selective Laser Melting

'''Authors and full affiliations:''' Alberto Boschettoa , Luana Bottinia , Valerio Cardinia, Marco Eugeni a, Paolo Gaudenziaa , Gabriel Graterol Nisib, Francesco Venialiaa, aDepartment of Mechanical and Aerospace Engineering, University of Rome “La Sapienza”, via Eudossiana 18, 00184, Rome, Italy ; ,bSmart Structures Solution, Via Luciano Manara 51, 00153, Rome, Italy .

'''Keywords:''' CubeSat; Design for additive manufacturing; Design for assembly; Nanosatellites ;Selective Laser Melting.

'''Purpose:''' This work points AM out as a key technology allowing for a drastic reduction of the part count for a mechanical system, taking Design for Assembly (DFA) guidelines to the extreme. It underlines the need to consider AM-related constrains already in the design phase, such as the clearance and the shape of the hinge and the snap joint matching SLM specific constraints such as support structures design and removal planning, part orientation in the building platform, and hollowing out for powder removal.

'''Methodology:''' This paper follows the Design for Additive Manufacturing (DFAM) and Design for Assembly (DFA) methodologies.

'''Findings:''' The already-assembled, fasteners-free mock-up demonstrates AM as a key technology to take DFA guidelines to the extreme. The increased complexity of the parts, integrating the features and the hinge, does not compromise the fabrication process. Considering the assembly-related cost saving entailed in a part-consolidated design, this works makes AM closer to the small satellites market, envisioning constellations made of many satellites.

'''Benefits:''' The structure is made of two parts joined by a hinge, making the system an already assembled one. In this way there was an assembly-related cost saving.

'''Grafical Abstract:
[[File:Image4.png|senza_cornice|centro]]

'''Full reference:''' Alberto Boschetto, Luana Bottini, Valerio Cardini, Marco Eugeni , Paolo Gaudenzia, Gabriel Graterol Nisi, Francesco Venialia , Selective Laser Melting of a 1U CubeSat structure. Design for Additive Manufacturing and assembly, Acta Astronautica , Volume 159 , June 2019, Pages 377-384.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S0094576518317673

File:Image4.png

2020-01-07T16:18:54Z

SaraCozzani:

image

Design for Assembly

2020-01-07T16:15:54Z

SaraCozzani: Creata pagina con "Hinge re-design"

[[Hinge re-design]]

Design for manufacturing of surface to improve accuracy

2020-01-07T16:00:40Z

'''Title:''' Design for manufacturing of surfaces to improve accuracy in Fused Deposition Modeling

'''Authors and full affiliations:''' Alberto Boschetto, Luana Bottini, ''Department of Mechanical and Aerospace Engineering, University of Rome La Sapienza, Via Eudossiana 18, 00184 Rome, Italy .''

'''Keywords:''' Fused Deposition Modeling; Accuracy improvement; Design for manufacturing .

'''Purpose:''' The aim of this work is the development of a virtual model preprocessing in order to compensate for the deterministic behavior found in the Fused Decomposition Modeling.

'''Methodology:''' The idea, in order to compensate the deterministic dimensional deviation introduced during the physical fabrication, is to offset this starting surface by considering a sphere R in radius around the generic point P. The offset surface is generated as the envelope of all the spheres centered in each point of the surface. This mathematical operation corresponds to the displacement by R of the point P along the normal . Starting from the equation of a generic point of the offset surface by doing various calculations, which are found in the whole article, we arrive at the final formulation . The application of this equation to all the surface points allows obtaining a deformed model that permits to compensate the deviations introduced by the physical fabrication. Then the abovementioned methodology has been applied to three case studies: a cylinder, a spherical joint and a fan blade.

'''Benefits:''' With this method it’s no necessary to fabricate artifact and perform measurement in order to gain the model information and it can be directly used before CAM environment.

'''Findings:''' All the components have been defined by mathematical formulations and fabricated before and after the application of the methodology. The performed dimensional measurements pointed out a marked reduction of the dimensional deviations after the DFM: both for simple and complex geometries the pre-processing of the virtual model permitted to obtain dimensional values very close to nominal ones.

[[File:Image3.png|miniatura|'''Grafical Abstract''']]

'''Full reference:''' Alberto Boschetto, Luana Bottini, Selective Laser Melting of a 1U CubeSat structure. Design for Additive Manufacturing and assembly, Robotics and Computer-Integrated Manufacturing , Volume 37, February 2016, Pages 103-114.

'''Link:''' https://www.sciencedirect.com/science/article/abs/pii/S0736584515000848

File:Image3.png

2020-01-07T15:59:48Z

SaraCozzani:

graphic

Fused Deposition Modeling

2020-01-07T15:45:40Z

SaraCozzani: Creata pagina con "Design for manufacturing of surface to improve accuracy"

[[Design for manufacturing of surface to improve accuracy]]

Process Optimization

2020-01-07T15:33:56Z

'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing .

'''Authors and full affiliations:''' Michele Bicia, Salvatore Brischettob, Francesca Campanaa, Carlo Giovanni Ferrob, Carlo Seclìc, Sara Varettib,d, Paolo Maggioreb, Andrea Mazzab , aSapienza Università di Roma, Via Eudossiana 18, 00184 Roma; bPolitecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino ;cAltair Engineering, Via Livorno 60, 10144 Torino; d3D- New Technologies (3D-NT), via Livorno 60, 10144, Torino .

'''Keywords:''' DOE ; Metamodeling; Pareto optimality; Virtual prototyping; Response surface;

'''Purpose:''' The aim is to investigate an innovative solution for a multifunctional sandwich panel. Moreover ,a specific objective of this paper is to test different models of cells type and different skin thicknesses to understand which design variable affect mainly the mechanical behavior .

'''Methodology:''' To establish whether of the design variable affects majorly the mechanical resistance of the sandwich panel, a Design of Experiment (DOE) has been designed. DOE method has been applied through FEM simulations on a NACA profile, using real loads from aerodynamic simulations. FEM model considers the outer skins modelled as shells and the lattice core made by beams. So that, DOE design variables considered in the present work are: cell type, cell length, beam section radius, shell thickness. FEM geometry (cell type and length) was set-up through a MATLAB code designed for automatize the FEM pre-processing.

'''Findings:''' From the Pareto frontier of the problem, optimal solutions were evaluated. To optimize mass and 1st frequency beam radius can be set between 0.35 and 0.40 passing from cell_1 to cell_2_ in case of length_5, from 0.47 to 0.50 in case of length_7. Shell thickness, with the same type of progression, changed from 0.52 to 0.40.

'''Benefits:''' The adopted DOE allowed to build a full quadratic response surface that was used to optimize mass and frequency, leaving the maximum stresses under a threshold safe for yielding.

[[File:'_'_'Graphical_abstract_'_'_'.png|miniatura|'''Graphical Abstract :''' Layout of P180 anti-ice system]]

'''Full reference:''' Michele Bici, Salvatore Brischetto, Francesca Campana, Carlo Giovanni Ferro, Carlo Seclì, Sara Varetti, Paolo Maggiore, Andrea Mazza, Development of a multifunctional panel for aerospace use through SLM additive manufacturing, Procedia CIRP, Volume 67,2018, Pages 215-220.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311460

Selective Laser Melting

2020-01-07T15:30:45Z

SaraCozzani:

[[Process Optimization]]

Selective Laser Melting

2020-01-07T15:30:29Z

SaraCozzani: Creata pagina con "'''Process Optimization'''"

[['''Process Optimization''']]

Main Page

2020-01-07T15:29:39Z

SaraCozzani: /* Processes */

Main Page

2020-01-07T15:28:16Z

SaraCozzani: /* Processes */

=[[Materials]]=
=[[Processes]]=
*[[Fused Deposition Modeling]]
*[[Laser Machining]]
*[[Material Jetting]]
*[[Vat Polymerization]]
*[[Selective Laser Melting]]
**[[Process Obtimization]]

=[[Parts]]=
[[Design for AM]]

[[Speciale:CreaUtenza]]

Process Obtimazation

2020-01-07T14:59:18Z

SaraCozzani:

'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing .

'''Authors and full affiliations:''' Michele Bicia, Salvatore Brischettob, Francesca Campanaa, Carlo Giovanni Ferrob, Carlo Seclìc, Sara Varettib,d, Paolo Maggioreb, Andrea Mazzab , aSapienza Università di Roma, Via Eudossiana 18, 00184 Roma; bPolitecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino ;cAltair Engineering, Via Livorno 60, 10144 Torino; d3D- New Technologies (3D-NT), via Livorno 60, 10144, Torino .

'''Keywords:''' DOE ; Metamodeling; Pareto optimality; Virtual prototyping; Response surface;

'''Purpose:''' The aim is to investigate an innovative solution for a multifunctional sandwich panel. Moreover ,a specific objective of this paper is to test different models of cells type and different skin thicknesses to understand which design variable affect mainly the mechanical behavior .

'''Methodology:''' To establish whether of the design variable affects majorly the mechanical resistance of the sandwich panel, a Design of Experiment (DOE) has been designed. DOE method has been applied through FEM simulations on a NACA profile, using real loads from aerodynamic simulations. FEM model considers the outer skins modelled as shells and the lattice core made by beams. So that, DOE design variables considered in the present work are: cell type, cell length, beam section radius, shell thickness. FEM geometry (cell type and length) was set-up through a MATLAB code designed for automatize the FEM pre-processing.

'''Findings:''' From the Pareto frontier of the problem, optimal solutions were evaluated. To optimize mass and 1st frequency beam radius can be set between 0.35 and 0.40 passing from cell_1 to cell_2_ in case of length_5, from 0.47 to 0.50 in case of length_7. Shell thickness, with the same type of progression, changed from 0.52 to 0.40.
Benefits: The adopted DOE allowed to build a full quadratic response surface that was used to optimize mass and frequency, leaving the maximum stresses under a threshold safe for yielding.

[[File:' ' 'Graphical abstract ' ' '.png|miniatura|'''Grafical Abastract:''' Layout of P180 anti-ice system ]]

'''Full reference:''' Michele Bici, Salvatore Brischetto, Francesca Campana, Carlo Giovanni Ferro, Carlo Seclì, Sara Varetti, Paolo Maggiore, Andrea Mazza, Development of a multifunctional panel for aerospace use through SLM additive manufacturing, Procedia CIRP, Volume 67,2018, Pages 215-220.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311460

Process Obtimazation

2020-01-07T14:57:15Z

SaraCozzani:

'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing .

'''Authors and full affiliations:''' Michele Bicia, Salvatore Brischettob, Francesca Campanaa, Carlo Giovanni Ferrob, Carlo Seclìc, Sara Varettib,d, Paolo Maggioreb, Andrea Mazzab , aSapienza Università di Roma, Via Eudossiana 18, 00184 Roma; bPolitecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino ;cAltair Engineering, Via Livorno 60, 10144 Torino; d3D- New Technologies (3D-NT), via Livorno 60, 10144, Torino .

'''Keywords:''' DOE ;Metamodeling; Pareto optimality; Virtual prototyping; Response surface;

'''Purpose:''' The aim is to investigate an innovative solution for a multifunctional sandwich panel. Moreover ,a specific objective of this paper is to test different models of cells type and different skin thicknesses to understand which design variable affect mainly the mechanical behavior .

'''Methodology:''' To establish whether of the design variable affects majorly the mechanical resistance of the sandwich panel, a Design of Experiment (DOE) has been designed. DOE method has been applied through FEM simulations on a NACA profile, using real loads from aerodynamic simulations. FEM model considers the outer skins modelled as shells and the lattice core made by beams. So that, DOE design variables considered in the present work are: cell type, cell length, beam section radius, shell thickness. FEM geometry (cell type and length) was set-up through a MATLAB code designed for automatize the FEM pre-processing.

'''Findings:''' From the Pareto frontier of the problem, optimal solutions were evaluated. To optimize mass and 1st frequency beam radius can be set between 0.35 and 0.40 passing from cell_1 to cell_2_ in case of length_5, from 0.47 to 0.50 in case of length_7. Shell thickness, with the same type of progression, changed from 0.52 to 0.40.
Benefits: The adopted DOE allowed to build a full quadratic response surface that was used to optimize mass and frequency, leaving the maximum stresses under a threshold safe for yielding.

'''Grafical Abastract:'''
[[File:' ' 'Graphical abstract ' ' '.png|miniatura|Layout of P180 anti-ice system]]

'''Full reference:''' Michele Bici, Salvatore Brischetto, Francesca Campana, Carlo Giovanni Ferro, Carlo Seclì, Sara Varetti, Paolo Maggiore, Andrea Mazza, Development of a multifunctional panel for aerospace use through SLM additive manufacturing, Procedia CIRP, Volume 67,2018, Pages 215-220.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311460

Process Obtimazation

2020-01-07T14:55:21Z

SaraCozzani:

'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing .

'''Authors and full affiliations:''' Michele Bicia, Salvatore Brischettob, Francesca Campanaa, Carlo Giovanni Ferrob, Carlo Seclìc, Sara Varettib,d, Paolo Maggioreb, Andrea Mazzab , aSapienza Università di Roma, Via Eudossiana 18, 00184 Roma; bPolitecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino ;cAltair Engineering, Via Livorno 60, 10144 Torino; d3D- New Technologies (3D-NT), via Livorno 60, 10144, Torino .

'''Keywords:''' DOE ;Metamodeling; Pareto optimality; Virtual prototyping; Response surface;

'''Purpose:''' The aim is to investigate an innovative solution for a multifunctional sandwich panel. Moreover ,a specific objective of this paper is to test different models of cells type and different skin thicknesses to understand which design variable affect mainly the mechanical behavior .

'''Methodology:''' To establish whether of the design variable affects majorly the mechanical resistance of the sandwich panel, a Design of Experiment (DOE) has been designed. DOE method has been applied through FEM simulations on a NACA profile, using real loads from aerodynamic simulations. FEM model considers the outer skins modelled as shells and the lattice core made by beams. So that, DOE design variables considered in the present work are: cell type, cell length, beam section radius, shell thickness. FEM geometry (cell type and length) was set-up through a MATLAB code designed for automatize the FEM pre-processing.

'''Findings:''' From the Pareto frontier of the problem, optimal solutions were evaluated. To optimize mass and 1st frequency beam radius can be set between 0.35 and 0.40 passing from cell_1 to cell_2_ in case of length_5, from 0.47 to 0.50 in case of length_7. Shell thickness, with the same type of progression, changed from 0.52 to 0.40.
Benefits: The adopted DOE allowed to build a full quadratic response surface that was used to optimize mass and frequency, leaving the maximum stresses under a threshold safe for yielding.

'''Grafical Abastract:'''[[' ' 'Graphical abstract ' ' '.png]]

'''Full reference:''' Michele Bici, Salvatore Brischetto, Francesca Campana, Carlo Giovanni Ferro, Carlo Seclì, Sara Varetti, Paolo Maggiore, Andrea Mazza, Development of a multifunctional panel for aerospace use through SLM additive manufacturing, Procedia CIRP, Volume 67,2018, Pages 215-220.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311460

File:' ' 'Graphical abstract ' ' '.png

2020-01-07T14:51:03Z

SaraCozzani: Pagina svuotata

Process Obtimazation

2020-01-07T14:47:17Z

'''Title:''' Development of a multifunctional panel for aerospace use through SLM additive manufacturing .

'''Authors and full affiliations:''' Michele Bicia, Salvatore Brischettob, Francesca Campanaa, Carlo Giovanni Ferrob, Carlo Seclìc, Sara Varettib,d, Paolo Maggioreb, Andrea Mazzab , aSapienza Università di Roma, Via Eudossiana 18, 00184 Roma; bPolitecnico Di Torino, Corso Duca degli Abruzzi 24, 10129 Torino ;cAltair Engineering, Via Livorno 60, 10144 Torino; d3D- New Technologies (3D-NT), via Livorno 60, 10144, Torino .

'''Keywords:''' DOE ;Metamodeling; Pareto optimality; Virtual prototyping; Response surface;

'''Purpose:''' The aim is to investigate an innovative solution for a multifunctional sandwich panel. Moreover ,a specific objective of this paper is to test different models of cells type and different skin thicknesses to understand which design variable affect mainly the mechanical behavior .

'''Methodology:''' To establish whether of the design variable affects majorly the mechanical resistance of the sandwich panel, a Design of Experiment (DOE) has been designed. DOE method has been applied through FEM simulations on a NACA profile, using real loads from aerodynamic simulations. FEM model considers the outer skins modelled as shells and the lattice core made by beams. So that, DOE design variables considered in the present work are: cell type, cell length, beam section radius, shell thickness. FEM geometry (cell type and length) was set-up through a MATLAB code designed for automatize the FEM pre-processing.

'''Findings:''' From the Pareto frontier of the problem, optimal solutions were evaluated. To optimize mass and 1st frequency beam radius can be set between 0.35 and 0.40 passing from cell_1 to cell_2_ in case of length_5, from 0.47 to 0.50 in case of length_7. Shell thickness, with the same type of progression, changed from 0.52 to 0.40.
Benefits: The adopted DOE allowed to build a full quadratic response surface that was used to optimize mass and frequency, leaving the maximum stresses under a threshold safe for yielding.

'''Grafical Abastract:'''

'''Full reference:''' Michele Bici, Salvatore Brischetto, Francesca Campana, Carlo Giovanni Ferro, Carlo Seclì, Sara Varetti, Paolo Maggiore, Andrea Mazza, Development of a multifunctional panel for aerospace use through SLM additive manufacturing, Procedia CIRP, Volume 67,2018, Pages 215-220.

'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311460

File:' ' 'Graphical abstract ' ' '.png

2020-01-07T14:43:54Z

SaraCozzani:

Layout of P180 anti-ice system

File:Anti-ice system.png

2020-01-07T14:40:34Z

SaraCozzani:

Layout of P180

Main Page

2020-01-07T14:33:17Z

SaraCozzani:

=[[Materials]]=
=[[Processes]]=
*[[Fused Deposition Modeling]]
*[[Laser Machining]]
*[[Material Jetting]]
*[[Vat Polymerization]]
*[[Process Obtimazation | Selective Laser Melting]]

=[[Parts]]=
[[Design for AM]]

[[Speciale:CreaUtenza]]

Main Page

2020-01-07T14:31:10Z

SaraCozzani:

=[[Materials]]=
=[[Processes]]=
*[[Fused Deposition Modeling]]
*[[Laser Machining]]
*[[Material Jetting]]
*[[Vat Polymerization]]
*==[[Selective Laser Melting]]==
[[Process Obtimazation]]

=[[Parts]]=
[[Design for AM]]

[[Speciale:CreaUtenza]]

Main Page

2020-01-07T14:25:50Z

SaraCozzani: /* Processes */