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New scanning strategy to reduce warpage in additive manufacturing

Davi Leão Ramos, Fawzi Belblidia Orcid Logo, Johann Sienz Orcid Logo

Additive Manufacturing

Swansea University Authors: Fawzi Belblidia Orcid Logo, Johann Sienz Orcid Logo

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DOI (Published version): 10.1016/j.addma.2019.05.016

Abstract

This paper proposes a novel geometric based scanning strategy adopted in the selective laser melting (SLM) manufacturing technology aimed at reducing the level of residual stresses generated during the build-up process. A set of computer simulations of the build, based on different scans strategies,...

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Published in: Additive Manufacturing
ISSN: 2214-8604
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa50500
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first_indexed 2019-06-05T11:07:38Z
last_indexed 2019-07-18T21:35:38Z
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spelling 2019-07-18T15:44:34.6301737 v2 50500 2019-05-23 New scanning strategy to reduce warpage in additive manufacturing 7e0feb96ca2d685180b495e8983f3940 0000-0002-8170-0468 Fawzi Belblidia Fawzi Belblidia true false 17bf1dd287bff2cb01b53d98ceb28a31 0000-0003-3136-5718 Johann Sienz Johann Sienz true false 2019-05-23 AERO This paper proposes a novel geometric based scanning strategy adopted in the selective laser melting (SLM) manufacturing technology aimed at reducing the level of residual stresses generated during the build-up process. A set of computer simulations of the build, based on different scans strategies, including temperature dependent material properties, and a moving heat flux, were performed. The research novelty explores intermittent scan strategies in order to analyze the effect of reduction on heat concentration on the residual stress and deformation. Coupled thermal-structural computations revealed a significant stress and warpage reduction on the proposed scanning scheme. Different powder material properties were investigated and the computational model was validated against published numerical and experimental studies. Journal Article Additive Manufacturing 2214-8604 31 12 2019 2019-12-31 10.1016/j.addma.2019.05.016 COLLEGE NANME Aerospace Engineering COLLEGE CODE AERO Swansea University 2019-07-18T15:44:34.6301737 2019-05-23T11:41:24.3854403 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Davi Leão Ramos 1 Fawzi Belblidia 0000-0002-8170-0468 2 Johann Sienz 0000-0003-3136-5718 3 0050500-23052019114357.pdf ramos2019.pdf 2019-05-23T11:43:57.7930000 Output 23112317 application/pdf Accepted Manuscript true 2020-05-18T00:00:00.0000000 true eng
title New scanning strategy to reduce warpage in additive manufacturing
spellingShingle New scanning strategy to reduce warpage in additive manufacturing
Fawzi Belblidia
Johann Sienz
title_short New scanning strategy to reduce warpage in additive manufacturing
title_full New scanning strategy to reduce warpage in additive manufacturing
title_fullStr New scanning strategy to reduce warpage in additive manufacturing
title_full_unstemmed New scanning strategy to reduce warpage in additive manufacturing
title_sort New scanning strategy to reduce warpage in additive manufacturing
author_id_str_mv 7e0feb96ca2d685180b495e8983f3940
17bf1dd287bff2cb01b53d98ceb28a31
author_id_fullname_str_mv 7e0feb96ca2d685180b495e8983f3940_***_Fawzi Belblidia
17bf1dd287bff2cb01b53d98ceb28a31_***_Johann Sienz
author Fawzi Belblidia
Johann Sienz
author2 Davi Leão Ramos
Fawzi Belblidia
Johann Sienz
format Journal article
container_title Additive Manufacturing
publishDate 2019
institution Swansea University
issn 2214-8604
doi_str_mv 10.1016/j.addma.2019.05.016
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description This paper proposes a novel geometric based scanning strategy adopted in the selective laser melting (SLM) manufacturing technology aimed at reducing the level of residual stresses generated during the build-up process. A set of computer simulations of the build, based on different scans strategies, including temperature dependent material properties, and a moving heat flux, were performed. The research novelty explores intermittent scan strategies in order to analyze the effect of reduction on heat concentration on the residual stress and deformation. Coupled thermal-structural computations revealed a significant stress and warpage reduction on the proposed scanning scheme. Different powder material properties were investigated and the computational model was validated against published numerical and experimental studies.
published_date 2019-12-31T04:01:58Z
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score 11.01409

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