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A study on fiber laser micro-spot welding of thin stainless steel using response surface methodology and simulated annealing approach

  • Hsin-Te LiaoEmail author
  • Zhi-Wei Chen
ORIGINAL ARTICLE

Abstract

This study analyzed variations of shear strength that depend on the fiber laser process during micro-spot welding of AISI 304 stainless thin sheets. A preliminary study used ANSYS results to obtain initial process conditions. The experimental plan was based on a Taguchi orthogonal array table. A hybrid method that includes the response surface methodology (RSM)- and back propagation neural network (BPNN)- integrated simulated annealing algorithm (SAA) is proposed to search for an optimal parameter setting of the micro-spot welding process. In addition, an analysis of variance was implemented to identify significant factors influencing the micro-spot welding process parameters, which was also used to compare the results of BPNN-integrated SAA with the RSM approach. The results show that the RSM and BPNN/SAA methods are both effective tools for the optimization of micro-spot welding process parameters. A confirmation experiment was also conducted in order to validate the optimal welding process parameter values.

Keywords

Response surface methodology Back propagation neural network Simulated annealing algorithm ANOVA Optimization 

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Copyright information

© Springer-Verlag London 2012

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringMinghsin University of Science and TechnologyHsinchuTaiwan

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