Statistical Analysis and Optimization of Factors Affecting the Surface Roughness in UVaSPIF Process Using Response Surface Methodology
Publish Year: 1394
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JMATPR-3-1_002
تاریخ نمایه سازی: 13 مهر 1400
Abstract:
Ultrasonic vibration assisted single point incremental forming (UVaSPIF) is based on localized plastic deformation in a sheet metal blank. It consists to deform gradually and locally the sheet metal using vibrating hemispherical-head tool controlled by a CNC milling machine. The ultrasonic excitation of forming tool reduces the vertical component of forming force. In addition, application of ultrasonic vibration reduces the surface roughness of the specimen. Surface roughness is one of the quantitative and qualitative parameters, which is used to assess the quality of the final product. In the present paper, a statistical analysis and optimization of effective factors on this parameter is performed in the UVaSPIF. For this purpose, response surface methodology (RSM) is selected as the experiment design technique. The controllable factors such as vertical step size, sheet thickness, tool diameter, wall inclination angle, and feed rate is specified as input variables of the process. The obtained results from analysis of variance (ANOVA) and regression analysis of experimental data confirm the accuracy of mathematical model. Furthermore, it is shown that the linear, quadratic, and interactional terms of the variables are effective on the surface roughness parameter. To optimize the surface roughness parameter, the finest conditions of the experiment are determined using desirability method, and statistical optimization is subsequently verified by conducting the confirmation test.
Keywords:
Single Point Incremental Forming , Ultrasonic Vibration , Surface roughness , Response Surface Methodology
Authors
Mehdi Vahdati
Department of Mechanical Engineering, University of Tehran, Tehran, Iran
Ramezanali Mahdavinejad
Department of Mechanical Engineering, University of Tehran, Tehran, Iran
Saeid Amini
Department of Mechanical Engineering, University of Kashan, Kashan, Iran
Mahmoud Moradi
Department of Mechanical Engineering, Malayer University, Malayer, Iran
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