Optimization of Refill Friction Stir Spot Welded AA2024-T3 Using Machine Learning

The Refill Friction Stir Spot Welding is an innovative spot like solid state process befitting of overlap joint configurations of similar and dissimilar materials. This process caught the interest and is rapidly growing in the aerospace sector due to its potential to substitute traditional mechanica...

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Main Authors: P. S. Effertz, W. S. de Carvalho, R. P. M. Guimarães, G. Saria, S. T. Amancio-Filho
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-04-01
Series:Frontiers in Materials
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmats.2022.864187/full
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author P. S. Effertz
W. S. de Carvalho
R. P. M. Guimarães
G. Saria
S. T. Amancio-Filho
author_facet P. S. Effertz
W. S. de Carvalho
R. P. M. Guimarães
G. Saria
S. T. Amancio-Filho
author_sort P. S. Effertz
collection DOAJ
description The Refill Friction Stir Spot Welding is an innovative spot like solid state process befitting of overlap joint configurations of similar and dissimilar materials. This process caught the interest and is rapidly growing in the aerospace sector due to its potential to substitute traditional mechanical fasteners, surpassing their mechanical performance while maintaining the so desired lightweight “rationale.” In the current study, process parameters, namely plunge depth, plunge time and rotational speed, are optimized in order to obtain the highest Ultimate Lap Shear Force (ULSF) of 2024-T3 Aluminum Alloy similar joints. The optimization campaign was carried out using a second order multivariate polynomial regression machine learning (ML) algorithm. The trained ML model was able to generalize and accurately predict the Ultimate Lap Shear Force on the holdout set, having a R2 of 88.0%. Moreover, the model suggested an optimum parameter combination (Rotational Speed = 2,310 rpm, Welding Time = 5.3 s and Plunge Depth = 2.6 mm) from which the predicted maximum ULSF was computed. Confirmation tests were carried out to evaluate the agreement between the predicted and the experimental values.
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spelling doaj.art-20d214aaa4d14389b967a8d050c08da12022-12-21T23:28:56ZengFrontiers Media S.A.Frontiers in Materials2296-80162022-04-01910.3389/fmats.2022.864187864187Optimization of Refill Friction Stir Spot Welded AA2024-T3 Using Machine LearningP. S. EffertzW. S. de CarvalhoR. P. M. GuimarãesG. SariaS. T. Amancio-FilhoThe Refill Friction Stir Spot Welding is an innovative spot like solid state process befitting of overlap joint configurations of similar and dissimilar materials. This process caught the interest and is rapidly growing in the aerospace sector due to its potential to substitute traditional mechanical fasteners, surpassing their mechanical performance while maintaining the so desired lightweight “rationale.” In the current study, process parameters, namely plunge depth, plunge time and rotational speed, are optimized in order to obtain the highest Ultimate Lap Shear Force (ULSF) of 2024-T3 Aluminum Alloy similar joints. The optimization campaign was carried out using a second order multivariate polynomial regression machine learning (ML) algorithm. The trained ML model was able to generalize and accurately predict the Ultimate Lap Shear Force on the holdout set, having a R2 of 88.0%. Moreover, the model suggested an optimum parameter combination (Rotational Speed = 2,310 rpm, Welding Time = 5.3 s and Plunge Depth = 2.6 mm) from which the predicted maximum ULSF was computed. Confirmation tests were carried out to evaluate the agreement between the predicted and the experimental values.https://www.frontiersin.org/articles/10.3389/fmats.2022.864187/fullrefill friction stir spot weldingoptimizationmachine learningpolynomial regressionAA2024-T3
spellingShingle P. S. Effertz
W. S. de Carvalho
R. P. M. Guimarães
G. Saria
S. T. Amancio-Filho
Optimization of Refill Friction Stir Spot Welded AA2024-T3 Using Machine Learning
Frontiers in Materials
refill friction stir spot welding
optimization
machine learning
polynomial regression
AA2024-T3
title Optimization of Refill Friction Stir Spot Welded AA2024-T3 Using Machine Learning
title_full Optimization of Refill Friction Stir Spot Welded AA2024-T3 Using Machine Learning
title_fullStr Optimization of Refill Friction Stir Spot Welded AA2024-T3 Using Machine Learning
title_full_unstemmed Optimization of Refill Friction Stir Spot Welded AA2024-T3 Using Machine Learning
title_short Optimization of Refill Friction Stir Spot Welded AA2024-T3 Using Machine Learning
title_sort optimization of refill friction stir spot welded aa2024 t3 using machine learning
topic refill friction stir spot welding
optimization
machine learning
polynomial regression
AA2024-T3
url https://www.frontiersin.org/articles/10.3389/fmats.2022.864187/full
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