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Thickness Strain Analysis as a Tool for Process Control in Metal Forming
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English
Abstract
Thickness Strain Analysis (TSA) is the result of an evolution of technology that began with the production of the first flat rolled steel. It is an analytical approach to problems that have previously defied description.
Though the topic was first written about by Stu Keeler in an SAE Technical Paper in 1985, the development process can be traced to the earliest tool and die makers who wondered what made some parts easy to form while others seemed impossible to make.
This paper is an analysis of the present state of TSA with some mention of the development process and how it was accomplished.
TSA is the real time measurement of the metal thinning in formed parts. By examining the thinning in many parts produced by a die over time, the thinning can be monitored and charted to show the position and stability of any selected area of a part. By analyzing these charts with basic statistical tools, the process can be measured and improved.
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Topic
Citation
Deis, B., "Thickness Strain Analysis as a Tool for Process Control in Metal Forming," SAE Technical Paper 900279, 1990, https://doi.org/10.4271/900279.Also In
References
- Keeler S. P. “Statistical Deformation Control for SPOC Monitoring of Sheet Metal Forming” Society of Automotive Engineers Paper # 850278 1985
- Siekirk J. F. “Process Variable Effects on Sheet Metal Quality” Journal of Applied Metalworking ASM July 1986
- Allen D. R. “Using Process Output Variables in Stamping Line Process Control” Society of Automotive Engineers Paper # 890344 1989
- Allen D. R. “Process Control in Stamping Lines” Society of Automotive Engineers Paper # 890343 1989
- Siekirk J. F. “A Systems Approach to Sheet Metal Forming Process Control” International Deep Drawing Research Group 1988
- “Sheet Steel Formability” American Iron & Steel Institute Washington, D.C. 1984
- Brado M. A. Danko A. D. “Productivity and Quality Improvements Through the Application of Basic Principles Society of Automotive Engineers Paper # 880208
- Deis B. R. “The Ideal Quality System for the Stamping Environment” Society of Automotive Engineers 1990
- Allen D. R. Deis B. R. “Ultrasonic Thickness Gauges - An Analyses of Repeatability and Reproducibility” Society of Automotive Engineers 1990