TOOLPATH PLANNING WITH THERMAL STRESS AWARENESS FOR MATERIAL EXTRUSION ADDITIVE MANUFACTURING

Khatkar, J; Clemon, L; Mettu, R

TOOLPATH PLANNING WITH THERMAL STRESS AWARENESS FOR MATERIAL EXTRUSION ADDITIVE MANUFACTURING

Khatkar, J Clemon, L

Mettu, R

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Publisher:: ASME International
Publication Type:: Conference Proceeding
Citation:: ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), 2022, 2-A
Issue Date:: 2022-01-01

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Field	Value	Language
dc.contributor.author	Khatkar, J
dc.contributor.author	Clemon, L https://orcid.org/0000-0003-3808-7749
dc.contributor.author	Mettu, R
dc.date	2022-10-30
dc.date.accessioned	2023-05-16T01:13:50Z
dc.date.available	2023-05-16T01:13:50Z
dc.date.issued	2022-01-01
dc.identifier.citation	ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), 2022, 2-A
dc.identifier.isbn	9780791886632
dc.identifier.uri	http://hdl.handle.net/10453/170350
dc.description.abstract	Additive manufacturing has emerged as a next-generation technology for advanced fabrication. Fused Filament Fabrication (FFF) is the most widespread form of material extrusion additive manufacturing and has growing applications in large scale construction. Despite its advantages, FFF is limited by structural weaknesses introduced by cooling of the material between layers. This paper presents an approach to reduce the probability of failure for a given object under known loading conditions through improved toolpath planning which considers temperature decay. Our approach reorders the fabrication sequence to vary the time to print between layers such that the thermal stress induced in fabrication is reduced in regions most likely to fail at the expense of increasing thermally induced stress in less critical areas. In our simulation experiments, we found that our approach offers the greatest improvement when the rate of cooling is large enough for significant temperature decay to occur, but not so large that cooling occurs too quickly for the print order to have any effect. Our approach offers the potential to improve the performance of 3D printed components under known loading conditions by considering the temperature of the print in the planning of the toolpath.
dc.language	en
dc.publisher	ASME International
dc.relation.ispartof	ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
dc.relation.ispartof	Volume 2A: Advanced Manufacturing
dc.relation.isbasedon	10.1115/IMECE2022-94341
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	TOOLPATH PLANNING WITH THERMAL STRESS AWARENESS FOR MATERIAL EXTRUSION ADDITIVE MANUFACTURING
dc.type	Conference Proceeding
utslib.citation.volume	2-A
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CAM - Centre for Advanced Manufacturing
utslib.copyright.status	closed_access	*
dc.date.updated	2023-05-16T01:13:48Z
pubs.finish-date	2022-11-03
pubs.publication-status	Published
pubs.start-date	2022-10-30
pubs.volume	2-A

Abstract:

Additive manufacturing has emerged as a next-generation technology for advanced fabrication. Fused Filament Fabrication (FFF) is the most widespread form of material extrusion additive manufacturing and has growing applications in large scale construction. Despite its advantages, FFF is limited by structural weaknesses introduced by cooling of the material between layers. This paper presents an approach to reduce the probability of failure for a given object under known loading conditions through improved toolpath planning which considers temperature decay. Our approach reorders the fabrication sequence to vary the time to print between layers such that the thermal stress induced in fabrication is reduced in regions most likely to fail at the expense of increasing thermally induced stress in less critical areas. In our simulation experiments, we found that our approach offers the greatest improvement when the rate of cooling is large enough for significant temperature decay to occur, but not so large that cooling occurs too quickly for the print order to have any effect. Our approach offers the potential to improve the performance of 3D printed components under known loading conditions by considering the temperature of the print in the planning of the toolpath.

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http://hdl.handle.net/10453/170350