Economic parameter design for ultra-fast laser micro-drilling process

Jianjun Wang, Yizhong Ma, Fugee Tsung, Gang Chang and Yiliu Tu

International Journal of Production Research, 2019, vol. 57, issue 20, 6292-6314

Abstract: The basic requirement in this type of micro-drilling process is to achieve high product quality with the minimum machining cost, which can be realised through parameter design. In this paper, we propose a new economic parameter design under the framework of Bayesian modelling and optimisation. First of all, the Bayesian seemingly unrelated regression (SUR) models are utilised to develop the relationship models between input factors and output responses in the laser micro-drilling process. After that, simulated response values which reflect the real laser micro-drilling process are obtained by using the Gibbs sampling procedure. Moreover, a novel rejection cost function and a quality loss function are constructed based on the simulated responses. Finally, an optimisation scheme integrating the rejection cost (i.e. rework cost and scrap cost) function and the quality loss function is implemented by using multi-objective genetic algorithm to find feasible economic parameter settings for laser micro-drilling process.

Date: 2019
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DOI: 10.1080/00207543.2019.1566660

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