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<p>Friction stir welding (FSW), comparatively novel welding technique, has gained extensive utilization in the manufacturing and automotive industries. This study aims to identify the ideal combination of axial force, welding speed, tilt angle, and rotation speed to enhance tensile strength (TS) of dissimilar welded joints. This research utilizes contour and surface plots to analyze effects of axial force, tilt angle, welding speed and rotational speed, on TS output response. The adaptability of the AA1100 and A356 alloys resulted in their choice as the workpiece material. The specifications and shapes of the materials are determined by the standards established by ASTM. Upon completion of the testing process, all output response was assessed under conceivable welding conditions. The Taguchi L9 orthogonal array (OA) provide the basis for the experiment’s design. To optimize the numerous responses, the experimental data was input into two multi-criteria decision-making systems derived from Taguchi’s methodology: CRITIC and EDAS. Several responses were concurrently optimized utilizing the (CRiteria Importance Through Inter-criteria Correlation) CRITIC and the (Evaluation based on Distance from Average Solution) EDAS ranking methodology. This strategy is typically beneficial in enhancing the numerous benefits of the FSW method.</p>

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Optimization of friction stir welding parameters for dissimilar AA1100 and A356 alloys using Taguchi–CRITIC–EDAS methods

  • 期刊论文

  • 发表日期：

    2026年4月21日

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  • S. Karthick,
  • Robert Adaikalaraj,
  • Bachina Harish Babu,
  • Karthikeyan K. M. B.,
  • B. Gayathri,
  • Rakesh Kumar Maurya

摘要

Friction stir welding (FSW), comparatively novel welding technique, has gained extensive utilization in the manufacturing and automotive industries. This study aims to identify the ideal combination of axial force, welding speed, tilt angle, and rotation speed to enhance tensile strength (TS) of dissimilar welded joints. This research utilizes contour and surface plots to analyze effects of axial force, tilt angle, welding speed and rotational speed, on TS output response. The adaptability of the AA1100 and A356 alloys resulted in their choice as the workpiece material. The specifications and shapes of the materials are determined by the standards established by ASTM. Upon completion of the testing process, all output response was assessed under conceivable welding conditions. The Taguchi L9 orthogonal array (OA) provide the basis for the experiment’s design. To optimize the numerous responses, the experimental data was input into two multi-criteria decision-making systems derived from Taguchi’s methodology: CRITIC and EDAS. Several responses were concurrently optimized utilizing the (CRiteria Importance Through Inter-criteria Correlation) CRITIC and the (Evaluation based on Distance from Average Solution) EDAS ranking methodology. This strategy is typically beneficial in enhancing the numerous benefits of the FSW method.