Additive Manufactoring - Contributi utente [it]

Fused Deposition Modeling

2020-01-09T21:15:29Z

NicolòGuglielmi:

[[Education]]

[[Design for manufactoring]]

Design for manufactoring

2020-01-09T21:14:24Z

NicolòGuglielmi:

[[Post processing]]

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

Experimental study aiming to enhance the surface finish of fused deposition modeled parts

2020-01-09T21:13:33Z

NicolòGuglielmi: Creata pagina con "'''Authors and full affiliations:''' L.M.Galantucci, F.Lavecchia, G.Percoco '''Keywords:''' Rapid prototyping, fused deposition modeling, surface finish '''Purpose:'''..."

'''Authors and full affiliations:'''

L.M.Galantucci, F.Lavecchia, G.Percoco

'''Keywords:'''

Rapid prototyping, fused deposition modeling, surface finish

'''Purpose:'''

Improve the surface finish of FDM processes through a chemical treatment.

'''Design/Methodology/Approach:'''

Fase 1(sample manufacture), fase 2(chemical finish)

'''Findings:'''

As for the roughness, after the chemical treatment, the improvement is dramatic.

'''Limitations/Benefits:'''

Benefits(the proposed chemical treatment is economical, fast and easy to use. On the contrary, current commercial systems continue to be managed by the operator, last several hours and have high costs)

'''Full reference:'''

GALANTUCCI, Luigi Maria; LAVECCHIA, Fulvio; PERCOCO, Gianluca. Studio sperimentale volto a migliorare la finitura superficiale delle parti modellate a deposizione fusa. Annali CIRP , 2009, 58.1: 189-192.

'''Link(s):'''

https://www.sciencedirect.com/science/article/pii/S0007850609000778

Post processing

2020-01-09T21:11:38Z

NicolòGuglielmi:

[[Compressive Properties of FDM Rapid Prototypes Treated with a Low Cost Chemical Finishing]]

[[Experimental study aiming to enhance the surface finish of fused deposition modeled parts]]

Fused Deposition Modeling

2020-01-09T21:09:35Z

NicolòGuglielmi:

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

[[Education]]

[[Design for manufactoring]]

Design for manufactoring

2020-01-09T21:08:53Z

NicolòGuglielmi:

[[Post processing]]

Design for manufactoring

2020-01-09T21:08:26Z

NicolòGuglielmi: Creata pagina con "post processing"

[[post processing]]

Fused Deposition Modeling

2020-01-09T21:07:54Z

NicolòGuglielmi:

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

[[Education]]

[[Post processing]]

[[Design for manufactoring]]

Compressive Properties of FDM Rapid Prototypes Treated with a Low Cost Chemical Finishing

2020-01-09T21:01:12Z

NicolòGuglielmi: Creata pagina con "'''Authors and full affiliations:''' Gianluca Percoco, Fulvio Lavecchia, Luigi Maria Galantucci, Dipartimento di Ingegneria Meccanica e Gestionale, Politecnico di Bari, Viale..."

'''Authors and full affiliations:'''

Gianluca Percoco, Fulvio Lavecchia, Luigi Maria Galantucci, Dipartimento di Ingegneria Meccanica e Gestionale, Politecnico di Bari, Viale Japigia 182, 70126 Bari, Italy.

'''Keywords:'''

Dimethyl-ketone, finishing, fused deposition modeling, rapid prototyping, roughness.

'''Purpose:'''

The authors aim to gain a more in-depth knowledge of this process, by analyzing and comparing the compressive properties of finished and non-finished FDM parts through the use of an experimental approach, totalizing about 100 tests.

'''Design/Methodology/Approach:'''

The design of the specimens have taken into account the standard EN ISO 604 that prescribes for cylindrical specimens a diameter-height ratio (x/L) greater or equal to 0,4. As a consequence a diameter x = 20 mm and a height L = 50 mm. The tests were performed with an Instron 4485 universal testing machine, with crosshead speeds equal to 5 mm/min (Fig. 2). In order to compare properties of treated and non treated specimens, one experimental set using 2-level Central Composite Design (CCD) is used to assess the compressive strength of untreated specimens, while one 3level CCD was used to evaluate the compressive strength of treated specimens.

'''Findings:'''

In conclusion, the results achieved point out the efficacy of the proposed finishing treatments that can be used with immersion times up to 300 sec to reduce roughness up to 90%, keeping mechanical properties in some cases better than those of non-treated parts.

'''Limitations/Benefits:'''

Benefits(resulting in increasing compressive strength, bending tests revealed a general improvement of the flexural strength, showing to increase tensile ductility)
Limitations(slightly lower tensile strength)

'''Full reference:'''

PERCOCO, Gianluca; LAVECCHIA, Fulvio; GALANTUCCI, Luigi Maria. Proprietà di compressione dei prototipi rapidi FDM trattati con una finitura chimica a basso costo. Giornale di ricerca di scienze applicate, ingegneria e tecnologia , 2012, 4.19: 3838-3842.

'''Link(s):'''
https://www.researchgate.net/profile/Gianluca_Percoco/publication/233883267_Compressive_Properties_of_FDM_Rapid_Prototypes_Treated_with_a_Low_Cost_Chemical_Finishing/links/0912f50c87764d44b4000000.pdf

Post processing

2020-01-09T20:58:46Z

NicolòGuglielmi:

[[Compressive Properties of FDM Rapid Prototypes Treated with a Low Cost Chemical Finishing]]

Post processing

2020-01-09T20:57:41Z

NicolòGuglielmi: Creata pagina con "* Compressive Properties of FDM Rapid Prototypes Treated with a Low Cost Chemical Finishing"

* Compressive Properties of FDM Rapid Prototypes Treated with a Low Cost Chemical Finishing

Fused Deposition Modeling

2020-01-09T20:55:43Z

NicolòGuglielmi:

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

[[Education]]

[[Post processing]]

Direct Metal Laser Sintering, robotic applications

2020-01-09T15:15:11Z

NicolòGuglielmi:

'''Authors and full affiliations:'''

D. Manfredi, F. Calignano, E. P. Ambrosio, M.Krishnan, R. Canali, S. Biamino, M. Pavese, E. Atzeni, L. Iuliano, P. Fino, C. Badini

'''Keywords:'''

Additive manufacturing (AM) - Direct metal laser sintering (DMLS) - Aluminium alloy Mechanical properties - Electron microscopy - Lightweight structures

'''Purpose:'''

This approach permits to extend significantly the freedom of design and manufacture by allowing, for example, to create an object with desired shape and internal structure in a single fabrication step

'''Design/Methodology/Approach:'''

All the steps involved in the production of Al alloy pieces by DMLS;
Fase 1(STL file by 3D cam model), fase 2(support structure), fase 3(slicing), fase 4(part build), fase 5(stress relieving), fase 6(shot peening), fase 7(aluminium part)

'''Findings:'''

Shorter time to market, higher production speed, versatility, high precision of parts, ability to produce more functionality in parts with unique design and engineered features. In particular, it allows to create fully functional parts directly from metal powders without using intermediate binders or further processing steps after the laser sintering operation

'''Limitations/Benefits:'''

DMLS makes it possible to create fully functional parts directly from metal powders without using any intermediate binders or any additional processing steps after the laser sintering operation, except only for surface finishing depending on the single application.

'''Full reference:'''

MANFREDI, D., et al. Direct metal laser sintering: an additive manufacturing technology ready to produce lightweight structural parts for robotic applications. La metallurgia italiana, 2013, 10.

'''Link(s):'''

https://www.gruppofrattura.it/ors/index.php/aim/article/viewFile/1210/1163

Direct Metal Laser Sintering, robotic applications

2020-01-09T15:11:25Z

NicolòGuglielmi:

Authors and full affiliations:

D. Manfredi, F. Calignano, E. P. Ambrosio, M.Krishnan, R. Canali, S. Biamino, M. Pavese, E. Atzeni, L. Iuliano, P. Fino, C. Badini

Keywords:

Additive manufacturing (AM) - Direct metal laser sintering (DMLS) - Aluminium alloy Mechanical properties - Electron microscopy - Lightweight structures

Purpose:

This approach permits to extend significantly the freedom of design and manufacture by allowing, for example, to create an object with desired shape and internal structure in a single fabrication step

Design/Methodology/Approach:

All the steps involved in the production of Al alloy pieces by DMLS;
Fase 1(STL file by 3D cam model), fase 2(support structure), fase 3(slicing), fase 4(part build), fase 5(stress relieving), fase 6(shot peening), fase 7(aluminium part)

Findings:

Shorter time to market, higher production speed, versatility, high precision of parts, ability to produce more functionality in parts with unique design and engineered features. In particular, it allows to create fully functional parts directly from metal powders without using intermediate binders or further processing steps after the laser sintering operation

Limitations/Benefits:

DMLS makes it possible to create fully functional parts directly from metal powders without using any intermediate binders or any additional processing steps after the laser sintering operation, except only for surface finishing depending on the single application.

Full reference:

MANFREDI, D., et al. Direct metal laser sintering: an additive manufacturing technology ready to produce lightweight structural parts for robotic applications. La metallurgia italiana, 2013, 10.

Link(s):

https://www.gruppofrattura.it/ors/index.php/aim/article/viewFile/1210/1163

Direct Metal Laser Sintering, robotic applications

2020-01-09T15:09:55Z

NicolòGuglielmi: Creata pagina con "Authors and full affiliations: D. Manfredi, F. Calignano, E. P. Ambrosio, M.Krishnan, R. Canali, S. Biamino, M. Pavese, E. Atzeni, L. Iuliano, P. Fino, C. Badini Keywords: Ad..."

Authors and full affiliations:
D. Manfredi, F. Calignano, E. P. Ambrosio, M.Krishnan, R. Canali, S. Biamino, M. Pavese, E. Atzeni, L. Iuliano, P. Fino, C. Badini

Keywords:
Additive manufacturing (AM) - Direct metal laser sintering (DMLS) - Aluminium alloy Mechanical properties - Electron microscopy - Lightweight structures

Purpose:
This approach permits to extend significantly the freedom of design and manufacture by allowing, for example, to create an object with desired shape and internal structure in a single fabrication step

Design/Methodology/Approach:
All the steps involved in the production of Al alloy pieces by DMLS;
Fase 1(STL file by 3D cam model), fase 2(support structure), fase 3(slicing), fase 4(part build), fase 5(stress relieving), fase 6(shot peening), fase 7(aluminium part)

Findings:
Shorter time to market, higher production speed, versatility, high precision of parts, ability to produce more functionality in parts with unique design and engineered features. In particular, it allows to create fully functional parts directly from metal powders without using intermediate binders or further processing steps after the laser sintering operation

Limitations/Benefits:
DMLS makes it possible to create fully functional parts directly from metal powders without using any intermediate binders or any additional processing steps after the laser sintering operation, except only for surface finishing depending on the single application.

Full reference:
MANFREDI, D., et al. Direct metal laser sintering: an additive manufacturing technology ready to produce lightweight structural parts for robotic applications. La metallurgia italiana, 2013, 10.

Link(s):
https://www.gruppofrattura.it/ors/index.php/aim/article/viewFile/1210/1163

Design for AM for Selective Laser Melting

2020-01-09T15:09:02Z

NicolòGuglielmi:

[[Hinge re-design]]

[[Direct Metal Laser Sintering, robotic applications]]

Design for AM for Selective Laser Melting

2020-01-09T15:08:48Z

NicolòGuglielmi:

[[Hinge re-design]]
[[Direct Metal Laser Sintering, robotic applications]]