Multiple Performance Characteristics Optimization for AA8011 on Friction Stir Welding by RSM Based DEA

Abstract:

In this investigation, the optimization of the multiple responses of Vickers hardness, Impact strength with notched and Un-notched conditions of the process parameters of rotational speed, tool tilt angle and feed rate with the straight cam profiled tool is considered. The three factors, five level rotatable central composite design are selected to optimize the responses of friction stir welded AA 8011 aluminium alloys. The highest relative efficiency is found using the data envelopment analysis to predict the optimum parameters. It reveals that at the rotational speed of 680 RPM, the tool tilt angle of 85 degrees and the feed rate of 24 mm/min the good weld quality can be achieved.

• Periodical: Applied Mechanics and Materials (Volumes 813-814)
• Pages: 451-455
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.813-814.451
• Online since: November 2015
• Authors: K. Palani*, C. Elanchezhian
• Keywords: AA8011 Aluminium Alloys, DEA, Friction Stir Welding, Impact Strength, Process Parameters, Response Surface Methodology, Vickers Hardness

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