Forthcoming and Online First Articles

International Journal of Computer Aided Engineering and Technology

International Journal of Computer Aided Engineering and Technology (IJCAET)

Forthcoming articles have been peer-reviewed and accepted for publication but are pending final changes, are not yet published and may not appear here in their final order of publication until they are assigned to issues. Therefore, the content conforms to our standards but the presentation (e.g. typesetting and proof-reading) is not necessarily up to the Inderscience standard. Additionally, titles, authors, abstracts and keywords may change before publication. Articles will not be published until the final proofs are validated by their authors.

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International Journal of Computer Aided Engineering and Technology (1 paper in press)

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  •   Free full-text access Open AccessComparing open-source optimisation algorithms for functionally graded material design: a thermoelastic case study
    ( Free Full-text Access ) CC-BY-NC-ND
    by Ryoichi Chiba 
    Abstract: In this study, we apply black-box optimisation (BBO) techniques using an open-source BBO framework, Optuna, to optimise the material composition of functionally graded materials (FGMs), specifically targeting residual thermal stress reduction in a uniformly cooled multi-layered FGM plate. We focus on three algorithms with an aim to compare their performance: the tree-structured Parzen estimator (TPE), the covariance matrix adaptation evolutionary strategy (CMA-ES), and the non-dominated sorting genetic algorithm II (NSGA-II). Our findings indicate that CMA-ES excels in optimisation quality, outperforming TPE and NSGA-II, despite TPE’s rapid convergence. We also observe that accounting for interactions among design variables may not always be beneficial and can hinder the optimisation process. This study not only showcases the effectiveness of BBO in material science but also guides material designers in selecting suitable optimisation techniques for complex engineering challenges.
    Keywords: optimal design; functionally graded material; FGM; thermal stress; thermoelasticity; black-box optimisation; BBO.
    DOI: 10.1504/IJCAET.2024.10063825
     

 

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