Enhancing Experimental Efficiency in Materials Design: A Comparative Study of Taguchi and Machine Learning Methods

• URL: http://arxiv.org/abs/2506.03910v1
• Date: Wed, 04 Jun 2025 13:04:29 GMT
• Title: Enhancing Experimental Efficiency in Materials Design: A Comparative Study of Taguchi and Machine Learning Methods
• Authors: Shyam Prabhu, P Akshay Kumar, Antov Selwinston, Pavan Taduvai, Shreya Bairi, Rohit Batra,
• Abstract summary: Materials design problems often require optimizing multiple variables, rendering full factorial exploration impractical.<n>In this work, we demonstrate how machine learning (ML) methods can be used to overcome these limitations.<n>We compare the performance of Taguchi method against an active learning based Gaussian process regression (GPR) model in a wire arc additive manufacturing (WAAM) process.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Materials design problems often require optimizing multiple variables, rendering full factorial exploration impractical. Design of experiment (DOE) methods, such as Taguchi technique, are commonly used to efficiently sample the design space but they inherently lack the ability to capture non-linear dependency of process variables. In this work, we demonstrate how machine learning (ML) methods can be used to overcome these limitations. We compare the performance of Taguchi method against an active learning based Gaussian process regression (GPR) model in a wire arc additive manufacturing (WAAM) process to accurately predict aspects of bead geometry, including penetration depth, bead width, and height. While Taguchi method utilized a three-factor, five-level L25 orthogonal array to suggest weld parameters, the GPR model used an uncertainty-based exploration acquisition function coupled with latin hypercube sampling for initial training data. Accuracy and efficiency of both models was evaluated on 15 test cases, with GPR outperforming Taguchi in both metrics. This work applies to broader materials processing domain requiring efficient exploration of complex parameters.

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