Accelerated process optimization for laser-based additive manufacturing by leveraging similar prior studies

Amir M. Aboutaleb, Linkan Bian, Alaa Elwany, Nima Shamsaei, Scott M. Thompson and Gustavo Tapia

IISE Transactions, 2017, vol. 49, issue 1, 31-44

Abstract: Manufacturing parts with target properties and quality in Laser-Based Additive Manufacturing (LBAM) is crucial toward enhancing the “trustworthiness” of this emerging technology and pushing it into the mainstream. Most of the existing LBAM studies do not use a systematic approach to optimize process parameters (e.g., laser power, laser velocity, layer thickness, etc.) for desired part properties. We propose a novel process optimization method that directly utilizes experimental data from previous studies as the initial experimental data to guide the sequential optimization experiments of the current study. This serves to reduce the total number of time- and cost-intensive experiments needed. We verify our method and test its performance via comprehensive simulation studies that test various types of prior data. The results show that our method significantly reduces the number of optimization experiments, compared with conventional optimization methods. We also conduct a real-world case study that optimizes the relative density of parts manufactured using a Selective Laser Melting system. A combination of optimal process parameters is achieved within five experiments.

Date: 2017
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DOI: 10.1080/0740817X.2016.1189629

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