Optimization of Welding Parameters for Friction Stir Lap Welding of AA6061-T6 Alloy
| Autor: | Senthil Kumar Velukkudi Santhanam, Sankar Ramaiyan, Rathinasuriyan Chandran, Avin Ganapathi Shanbhag |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0209 industrial biotechnology
Materials science Rotational speed 02 engineering and technology General Medicine Welding 021001 nanoscience & nanotechnology law.invention Taguchi methods 020901 industrial engineering & automation Lap joint law visual_art Ultimate tensile strength visual_art.visual_art_medium Shear strength Friction stir welding Composite material 0210 nano-technology Sheet metal |
| Zdroj: | Modern Mechanical Engineering. :31-41 |
| ISSN: | 2164-0181 2164-0165 |
| DOI: | 10.4236/mme.2018.81003 |
| Popis: | Friction Stir Welding (FSW) is currently used in many aircraft and aerospace sheet metal structures involving lap joints and there has been growing interest in recent years in utilizing this process for joining aluminum alloys. In this paper, Friction Stir Lap Welding (FSLW) of the 6061-T6 aluminum alloy was carried out to obtain the optimum welding condition for maximum shear strength where the rotational speed, axial load, and welding speed were taken as process parameters. An L-9 orthogonal array, a Taguchi Method with consideration of three levels and three factors was designed and executed for conducting trials. Analysis of variance (ANOVA) and Signal to Noise (S/N) ratio were employed to investigate the influence of different welding parameters on the shear strength and obtain the optimum parameters. The Fisher-Test was also implemented to find the design parameter which had the most important effect on the characteristic of quality. The results indicated that the tool rotational speed had the maximum percentage contribution (51%) on the response (shear strength) followed by the welding speed (38%) and the axial load (8%) while the percentage of error was 3%. However, to confirm the main effects for the means and S/N ratios of the experiment, theoretical shear strength values were computed to predict the tensile strength. The maximum shear strength of 60 MPa was achieved and the effectiveness of the method was confirmed. The optimum parameter combinations that provided higher shear strength were: rotational speed of 1200 rpm, welding speed of 45 mm/min and the axial load of 11.5 kN. |
| Databáze: | OpenAIRE |
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