ThaiScience
ThaiScience
ENGINEERING JOURNAL CHIANG MAI UNIVERSITY
Volume 26, No. 01, Month APRIL, Year 2019, Pages 135 - 147
Wobble riveting process parameter optimization using design of experiment technique
Wasupara Ounjitsakul and Wimalin Laosiritaworn
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The objective of this research is to find the appropriate parameter setting for wobble riveting with design of experiment techniques. By designing experiments of 2k full factorial model to study factors that affect the production process including air pressure, rivet pressure, time, and height. The response values are Wobble High and DCR. In this study, 16 experiments were conducted and 2 experiments were repeated. The results found that factors affecting the wobble high include air pressure, time, height and interaction effects between air pressure and time, time and height and factors affecting electrical resistance (DCR) are the rivet pressure, time, and height at the significance level of 0.05. With the appropriate parameters to the production process are as follows: 2.5 bar air pressure, rivet pressure at level of 6, time at the level of 6, height of 10.482 cm, and the total desirability function of 0.68313. The experiment was conducted to confirm the results by using parameter values derived from the analysis. The experiment was repeated 3 times and the analysis of variance (ANOVA) of the response value of both before and after improving parameter values. The results of average variance analysis of response are significantly different. This shows that the response after improving parameter values is different from the parameter values of current production and is within the range of product specification.
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Published by : Faculty of Engineering Chiang Mai University
Contributions welcome at : http://researchs.eng.cmu.ac.th/?name=journal
