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Concurrent optimization of surface roughness, build time, and mechanical properties of additively manufactured product in terms of part build orientation

Darvishi, I ; Sharif University of Technology | 2023

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  1. Type of Document: Article
  2. DOI: 10.1007/s40964-023-00413-y
  3. Publisher: Springer Science and Business Media Deutschland GmbH , 2023
  4. Abstract:
  5. With the increasing tendency to use the Additive manufacturing (AM) process and especially the Selective laser melting (SLM), improving the properties of the AM part becomes essential. Among the governing parameters for producing an AM part, part build orientation (PBO) is the most important one that can improve the properties by an appropriate adjusting. In this study, the surface roughness, build time, and mechanical properties of AM part are optimized and the results will be selected based on each objective function (OF) importance. To achieve this purpose, the OF for each property is derived from the literature. Then the OFs meta-modeled through the Kriging method and sample points of the Latin hypercube sampling (LHS) method to solve the original OFs problem of being time-consuming. Both original and estimated OFs are optimized by the multi-objective optimization of the non-dominant genetic algorithm (NSGAII) method. The results are ranked according to their importance by the Technique for order of preference by similarity to the ideal solution (TOPSIS) method. First, to illustrate the capability of the analytical original OFs, a comparison is made between the results of experimental tests and analytical original OFs optimum orientations. Finally, to evaluate the efficiency of the surrogate model, the results of the original OFs compared to the estimated ones by the Analysis of variance (ANOVA). Finally, a solution is proposed for the original OFs being computationally expensive by deriving surrogate models from the original OFs. © 2023, The Author(s), under exclusive licence to Springer Nature Switzerland AG
  6. Keywords:
  7. Additive manufacturing ; Build time ; Kriging ; Mechanical properties ; Multi-objective optimization ; Part build orientation ; Surface roughness ; TOPSIS
  8. Source: Progress in Additive Manufacturing ; Volume 8, Issue 6 , 2023 , Pages 1455-1471 ; 23639512 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s40964-023-00413-y