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        Parameter design for cut surface characteristics in abrasive waterjet cutting of Al/SiC/Al2O3 composite using grey theory based RSM

        M. Santhanakumar,R. Adalarasan,M. Rajmohan 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.1

        The abrasive mixed waterjet was successfully employed to cut many materials including austenitic steel, inconel and glass for a varietyof industrial applications. The present work focusses on studying the surface roughness, striation zone and striation angle in Abrasivewaterjet cutting (AWJC) of Al/SiC/Al2O3 composite. The water pressure, traverse speed, abrasive flow rate and stand-off distance wereincluded as the dominant parameters in the study. The features of striation zone (length and angle) and surface roughness were observedas the responses for each of the cutting trials planned as per Taguchi’s L18 orthogonal array. Parameter design was performed using thegrey theory based response surface methodology (g-RSM) by following the method of simultaneous optimization to forecast the optimalcutting condition. All the studied parameters and their interactions were found to have a substantial effect on the observed responses. Significant improvements were observed in the responses obtained with the optimal parameter setting predicted by the g-RSM approach. The Atomic force microscopy (AFM) images and P-profile plots were also studied to observe the texture of the cut surface.

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