An analytical method for predicting residual stress distribution in selective laser melted/sintered alloys

Dibakor Boruah; Xiang Zhang; Matthew Doré

doi:10.21741/9781945291890-45

An analytical method for predicting residual stress distribution in selective laser melted/sintered alloys

Dibakor Boruah, Xiang Zhang, Matthew Doré

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding › peer-review

112 Downloads (Pure)

Abstract

Residual stresses that build up during selective laser melting or sintering (SLM/SLS) process can influence the dimensional accuracy, mechanical properties and overall in-service performance of SLM/SLS parts. Therefore, it is crucial to understand, predict and effectively control the residual stress distribution in a part. The present study aims at developing an analytical model to predict the distribution of residual stresses in the part-substrate system. The proposed model demonstrates how residual stresses build up in the substrate and previously deposited layers are related to the stress induced by a newly deposited layer, considering the stress and moment equilibrium requirements. The model has been validated by published experimental measurements and verified with existing analytical/numerical models. The outcomes of the study suggest that the proposed analytical model is applicable for quick estimation of residual stress distribution and the order of magnitude. Also, it provides an evaluation tool for SLM/SLS process parameter design.

Original language	English
Title of host publication	European Conference on Residual Stresses 2018 (ECRS-10)
Subtitle of host publication	Materials Research Proceedings
Editors	Marc Seefeldt
Publisher	Materials Research Forum LLC
Pages	283-288
Number of pages	6
Volume	6
ISBN (Electronic)	978-1-945291-89-0
ISBN (Print)	978-1-945291-88-3
DOIs	https://doi.org/10.21741/9781945291890-45
Publication status	Published - 5 Oct 2018
Event	10th European Conference on Residual Stresses - KU Leuven, Leuven, Belgium Duration: 11 Sept 2018 → 14 Sept 2018 Conference number: 10 https://kuleuvencongres.be/ecrs10/

Conference

Conference	10th European Conference on Residual Stresses
Abbreviated title	ECRS10
Country/Territory	Belgium
City	Leuven
Period	11/09/18 → 14/09/18
Internet address	https://kuleuvencongres.be/ecrs10/

Bibliographical note

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

Keywords

Residual Stress
Analytical Modelling
Selective Laser Melting
Additive Manufacturing
Selective Laser Sintering

ASJC Scopus subject areas

Engineering(all)
Materials Science(all)

Access to Document

10.21741/9781945291890-45Licence: CC BY

PublishedFinal published version, 967 KBLicence: CC BY

1 Participation in conference

10th European Conference on Residual Stresses
Dibakor Boruah (Speaker)
13 Sept 2018
Activity: Participating in or organising an event › Participation in conference

2 Article

Evaluation of residual stresses induced by cold spraying of Ti-6Al-4V on Ti-6Al-4V substrates
Boruah, D., Ahmad, B., Lee, T. L., Kabra, S., Syed, A., McNutt, P., Doré, M. & Zhang, X., 25 Sept 2019, In: Surface and Coatings Technology. 374, p. 591-602 12 p.
Research output: Contribution to journal › Article › peer-review

Open Access
File
45 Citations (Scopus)

185 Downloads (Pure)
Theoretical prediction of residual stresses induced by cold spray with experimental validation
Boruah, D., Zhang, X. & Doré, M., 7 May 2019, In: Multidiscipline Modeling in Materials and Structures. 15, 3, p. 599-616 18 p.
Research output: Contribution to journal › Article › peer-review

Open Access
File
17 Citations (Scopus)

229 Downloads (Pure)

Best PhD Student 2019
Boruah, Dibakor (Recipient), 2 Jul 2019
Prize: National/international honour

File
Fully Funded NSIRC-TWI Doctoral Scholarship (2017-2020)
Boruah, Dibakor (Recipient), 2017
Prize: Fellowship awarded competitively
TWI Industrial Impact Award (Winner) 2019
Boruah, Dibakor (Recipient), 3 Jul 2019
Prize: Prize (including medals and awards)

File

Cite this

An analytical method for predicting residual stress distribution in selective laser melted/sintered alloys. / Boruah, Dibakor; Zhang, Xiang; Doré, Matthew.
European Conference on Residual Stresses 2018 (ECRS-10): Materials Research Proceedings . ed. / Marc Seefeldt. Vol. 6 Materials Research Forum LLC, 2018. p. 283-288.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding › peer-review

Boruah, D, Zhang, X & Doré, M 2018, An analytical method for predicting residual stress distribution in selective laser melted/sintered alloys. in M Seefeldt (ed.), European Conference on Residual Stresses 2018 (ECRS-10): Materials Research Proceedings . vol. 6, Materials Research Forum LLC, pp. 283-288, 10th European Conference on Residual Stresses, Leuven, Belgium, 11/09/18. https://doi.org/10.21741/9781945291890-45

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abstract = "Residual stresses that build up during selective laser melting or sintering (SLM/SLS) process can influence the dimensional accuracy, mechanical properties and overall in-service performance of SLM/SLS parts. Therefore, it is crucial to understand, predict and effectively control the residual stress distribution in a part. The present study aims at developing an analytical model to predict the distribution of residual stresses in the part-substrate system. The proposed model demonstrates how residual stresses build up in the substrate and previously deposited layers are related to the stress induced by a newly deposited layer, considering the stress and moment equilibrium requirements. The model has been validated by published experimental measurements and verified with existing analytical/numerical models. The outcomes of the study suggest that the proposed analytical model is applicable for quick estimation of residual stress distribution and the order of magnitude. Also, it provides an evaluation tool for SLM/SLS process parameter design.",

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AU - Zhang, Xiang

AU - Doré, Matthew

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PY - 2018/10/5

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N2 - Residual stresses that build up during selective laser melting or sintering (SLM/SLS) process can influence the dimensional accuracy, mechanical properties and overall in-service performance of SLM/SLS parts. Therefore, it is crucial to understand, predict and effectively control the residual stress distribution in a part. The present study aims at developing an analytical model to predict the distribution of residual stresses in the part-substrate system. The proposed model demonstrates how residual stresses build up in the substrate and previously deposited layers are related to the stress induced by a newly deposited layer, considering the stress and moment equilibrium requirements. The model has been validated by published experimental measurements and verified with existing analytical/numerical models. The outcomes of the study suggest that the proposed analytical model is applicable for quick estimation of residual stress distribution and the order of magnitude. Also, it provides an evaluation tool for SLM/SLS process parameter design.

AB - Residual stresses that build up during selective laser melting or sintering (SLM/SLS) process can influence the dimensional accuracy, mechanical properties and overall in-service performance of SLM/SLS parts. Therefore, it is crucial to understand, predict and effectively control the residual stress distribution in a part. The present study aims at developing an analytical model to predict the distribution of residual stresses in the part-substrate system. The proposed model demonstrates how residual stresses build up in the substrate and previously deposited layers are related to the stress induced by a newly deposited layer, considering the stress and moment equilibrium requirements. The model has been validated by published experimental measurements and verified with existing analytical/numerical models. The outcomes of the study suggest that the proposed analytical model is applicable for quick estimation of residual stress distribution and the order of magnitude. Also, it provides an evaluation tool for SLM/SLS process parameter design.

KW - Residual Stress

KW - Analytical Modelling

KW - Selective Laser Melting

KW - Additive Manufacturing

KW - Selective Laser Sintering

U2 - 10.21741/9781945291890-45

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PB - Materials Research Forum LLC

T2 - 10th European Conference on Residual Stresses

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ER -

An analytical method for predicting residual stress distribution in selective laser melted/sintered alloys

Abstract

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Activities

10th European Conference on Residual Stresses

Research output

Evaluation of residual stresses induced by cold spraying of Ti-6Al-4V on Ti-6Al-4V substrates

Theoretical prediction of residual stresses induced by cold spray with experimental validation

Prizes

Best PhD Student 2019

Fully Funded NSIRC-TWI Doctoral Scholarship (2017-2020)

TWI Industrial Impact Award (Winner) 2019

Cite this