Cellular scanning strategy for selective laser melting: Generating reliable, optimized scanning paths and processing parameters

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings – Annual report year: 2015Researchpeer-review

Standard

Cellular scanning strategy for selective laser melting: Generating reliable, optimized scanning paths and processing parameters. / Mohanty, Sankhya; Hattel, Jesper Henri.

Proceedings of SPIE: Laser 3D Manufacturing II. ed. / Henry Helvajian; Alberto Piqué; Martin Wegener; Bo Gu. Vol. 9353 SPIE - International Society for Optical Engineering, 2015. 93530U (Proceedings of SPIE, the International Society for Optical Engineering, Vol. 9353).

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings – Annual report year: 2015Researchpeer-review

Harvard

Mohanty, S & Hattel, JH 2015, Cellular scanning strategy for selective laser melting: Generating reliable, optimized scanning paths and processing parameters. in H Helvajian, A Piqué, M Wegener & B Gu (eds), Proceedings of SPIE: Laser 3D Manufacturing II. vol. 9353, 93530U, SPIE - International Society for Optical Engineering, Proceedings of SPIE, the International Society for Optical Engineering, vol. 9353. https://doi.org/10.1117/12.2079957

APA

Mohanty, S., & Hattel, J. H. (2015). Cellular scanning strategy for selective laser melting: Generating reliable, optimized scanning paths and processing parameters. In H. Helvajian, A. Piqué, M. Wegener, & B. Gu (Eds.), Proceedings of SPIE: Laser 3D Manufacturing II (Vol. 9353). [93530U] SPIE - International Society for Optical Engineering. Proceedings of SPIE, the International Society for Optical Engineering, Vol.. 9353 https://doi.org/10.1117/12.2079957

CBE

Mohanty S, Hattel JH. 2015. Cellular scanning strategy for selective laser melting: Generating reliable, optimized scanning paths and processing parameters. Helvajian H, Piqué A, Wegener M, Gu B, editors. In Proceedings of SPIE: Laser 3D Manufacturing II. SPIE - International Society for Optical Engineering. (Proceedings of SPIE, the International Society for Optical Engineering, Vol. 9353). https://doi.org/10.1117/12.2079957

MLA

Mohanty, Sankhya and Jesper Henri Hattel "Cellular scanning strategy for selective laser melting: Generating reliable, optimized scanning paths and processing parameters"., Helvajian, Henry and Piqué, Alberto Wegener, Martin Gu, Bo (editors). Proceedings of SPIE: Laser 3D Manufacturing II. SPIE - International Society for Optical Engineering. (Proceedings of SPIE, the International Society for Optical Engineering, Vol. 9353). 2015. https://doi.org/10.1117/12.2079957

Vancouver

Mohanty S, Hattel JH. Cellular scanning strategy for selective laser melting: Generating reliable, optimized scanning paths and processing parameters. In Helvajian H, Piqué A, Wegener M, Gu B, editors, Proceedings of SPIE: Laser 3D Manufacturing II. Vol. 9353. SPIE - International Society for Optical Engineering. 2015. 93530U. (Proceedings of SPIE, the International Society for Optical Engineering, Vol. 9353). https://doi.org/10.1117/12.2079957

Author

Mohanty, Sankhya ; Hattel, Jesper Henri. / Cellular scanning strategy for selective laser melting: Generating reliable, optimized scanning paths and processing parameters. Proceedings of SPIE: Laser 3D Manufacturing II. editor / Henry Helvajian ; Alberto Piqué ; Martin Wegener ; Bo Gu. Vol. 9353 SPIE - International Society for Optical Engineering, 2015. (Proceedings of SPIE, the International Society for Optical Engineering, Vol. 9353).

Bibtex

@inproceedings{a36d5d9bca9449c08e5de8f5f34b1513,
title = "Cellular scanning strategy for selective laser melting: Generating reliable, optimized scanning paths and processing parameters",
abstract = "Selective laser melting is yet to become a standardized industrial manufacturing technique. The process continues to suffer from defects such as distortions, residual stresses, localized deformations and warpage caused primarily due to the localized heating, rapid cooling and high temperature gradients that occur during the process. While process monitoring and control of selective laser melting is an active area of research, establishing the reliability and robustness of the process still remains a challenge.In this paper, a methodology for generating reliable, optimized scanning paths and process parameters for selective laser melting of a standard sample is introduced. The processing of the sample is simulated by sequentially coupling a calibrated 3D pseudo-analytical thermal model with a 3D finite element mechanical model.The optimized processing parameters are subjected to a Monte Carlo method based uncertainty and reliability analysis. The reliability of the scanning paths are established using cumulative probability distribution functions for process output criteria such as sample density, thermal homogeneity, etc. A customized genetic algorithm is used along with the simulation model to generate optimized cellular scanning strategies and processing parameters, with an objective of reducing thermal asymmetries and mechanical deformations. The optimized scanning strategies are used for selective laser melting of the standard samples, and experimental and numerical results are compared.",
keywords = "SLM, Scan strategies, Optimized scan strategies, Pseudo-analytical modeling, Thermo-mechanical analysis, Reliability estimation",
author = "Sankhya Mohanty and Hattel, {Jesper Henri}",
note = "Copyright 2015 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.",
year = "2015",
doi = "10.1117/12.2079957",
language = "English",
isbn = "9781628414431",
volume = "9353",
editor = "Helvajian, {Henry } and Piqu{\'e}, {Alberto } and Wegener, {Martin } and Gu, {Bo }",
booktitle = "Proceedings of SPIE",
publisher = "SPIE - International Society for Optical Engineering",

}

RIS

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T1 - Cellular scanning strategy for selective laser melting: Generating reliable, optimized scanning paths and processing parameters

AU - Mohanty, Sankhya

AU - Hattel, Jesper Henri

N1 - Copyright 2015 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

PY - 2015

Y1 - 2015

N2 - Selective laser melting is yet to become a standardized industrial manufacturing technique. The process continues to suffer from defects such as distortions, residual stresses, localized deformations and warpage caused primarily due to the localized heating, rapid cooling and high temperature gradients that occur during the process. While process monitoring and control of selective laser melting is an active area of research, establishing the reliability and robustness of the process still remains a challenge.In this paper, a methodology for generating reliable, optimized scanning paths and process parameters for selective laser melting of a standard sample is introduced. The processing of the sample is simulated by sequentially coupling a calibrated 3D pseudo-analytical thermal model with a 3D finite element mechanical model.The optimized processing parameters are subjected to a Monte Carlo method based uncertainty and reliability analysis. The reliability of the scanning paths are established using cumulative probability distribution functions for process output criteria such as sample density, thermal homogeneity, etc. A customized genetic algorithm is used along with the simulation model to generate optimized cellular scanning strategies and processing parameters, with an objective of reducing thermal asymmetries and mechanical deformations. The optimized scanning strategies are used for selective laser melting of the standard samples, and experimental and numerical results are compared.

AB - Selective laser melting is yet to become a standardized industrial manufacturing technique. The process continues to suffer from defects such as distortions, residual stresses, localized deformations and warpage caused primarily due to the localized heating, rapid cooling and high temperature gradients that occur during the process. While process monitoring and control of selective laser melting is an active area of research, establishing the reliability and robustness of the process still remains a challenge.In this paper, a methodology for generating reliable, optimized scanning paths and process parameters for selective laser melting of a standard sample is introduced. The processing of the sample is simulated by sequentially coupling a calibrated 3D pseudo-analytical thermal model with a 3D finite element mechanical model.The optimized processing parameters are subjected to a Monte Carlo method based uncertainty and reliability analysis. The reliability of the scanning paths are established using cumulative probability distribution functions for process output criteria such as sample density, thermal homogeneity, etc. A customized genetic algorithm is used along with the simulation model to generate optimized cellular scanning strategies and processing parameters, with an objective of reducing thermal asymmetries and mechanical deformations. The optimized scanning strategies are used for selective laser melting of the standard samples, and experimental and numerical results are compared.

KW - SLM

KW - Scan strategies

KW - Optimized scan strategies

KW - Pseudo-analytical modeling

KW - Thermo-mechanical analysis

KW - Reliability estimation

U2 - 10.1117/12.2079957

DO - 10.1117/12.2079957

M3 - Article in proceedings

SN - 9781628414431

VL - 9353

BT - Proceedings of SPIE

A2 - Helvajian, Henry

A2 - Piqué, Alberto

A2 - Wegener, Martin

A2 - Gu, Bo

PB - SPIE - International Society for Optical Engineering

ER -