A Statistical Analysis of Expulsion Limits in Resistance Spot Welding-Reference-Cited by-同舟云学术

A Statistical Analysis of Expulsion Limits in Resistance Spot Welding

Published:1999-08-01 Issue:3 Volume:122 Page:501-510
ISSN:1087-1357
Container-title:Journal of Manufacturing Science and Engineering
language:en
Short-container-title:

Author:

Zhang Hongyan¹,Hu S. Jack¹,Senkara Jacek¹,Cheng Shaowei²

Affiliation:

1. Department of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, MI 48109

2. Department of Statistics, University of Michigan, Ann Arbor, MI 48109

Abstract

Expulsion is an important phenomenon in resistance spot welding. It involves loss of metal from the liquid nugget, which often results in the reduction of weld strength. Various models have been proposed to understand expulsion mechanisms. In these models the occurrence of expulsion is often treated as a deterministic event, and depicted by a line (boundary) in conventional lobe diagrams. In this study, statistical analysis is employed to explore expulsion with consideration of the influence of random factors. Models are built based on experimental data, and one steel and two aluminum alloys are used as examples. Expulsion probabilities are presented as a function of electrode force, welding current, and time. Analytical models and their graphical form of expression (contours and surfaces) are created to present expulsion limits under various combinations of welding parameters. This study provides not only quantitative model predictions on expulsion limits for the materials studied, but also a generic statistical methodology that can be used for analyzing expulsion in various material systems. [S1087-1357(00)00602-X]

Publisher

ASME International

Subject

Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering

Link

http://asmedigitalcollection.asme.org/manufacturingscience/article-pdf/122/3/501/5932400/501_1.pdf

Reference18 articles.

1. Senkara, J., Zhang, H., and Hu, S. J., 2000, “Expulsion Prediction in Resistance Spot Welding,” Welding J., in press.

2. Davies, A. C., 1993, “The Science and Practice of Welding: Volume 2—The Practice of Welding,” 10th ed., p. 210.

3. Wu, K. C. , 1977, “The Mechanism of Expulsion in Weldbonding of Anodized Aluminum,” Weld. J. (Miami), 56, No. 8, pp. 238-s–244-s238-s–244-s.

4. Dickinson, D. W., Franklin, J. E., and Stanya, A., 1980, “Characterization of Spot Welding Behavior by Dynamic Electrical Parameter Monitoring,” Weld. J. (Miami), 59, No. 6, pp. 170-s–176-s170-s–176-s.

5. Browne, D. J., Chandler, H. W., Evans, J. T., and Wen, J., 1995, “Computer Simulation of Resistance Spot Welding in Aluminum-Part I,” Weld. J. (Miami), 74, No. 10, pp. 339-s–344-s339-s–344-s.

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