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Probability-Based Methods for Fatigue Analysis
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English
Abstract
Modern fatigue analysis techniques, that can provide reliable estimates of the service performance of components and structures, are finding increasing use in vehicle development programs. A major objective of such efforts is the prediction of the field performance of a fleet of vehicles as influenced by the host of design, manufacturing, and performance variables. An approach to this complex problem, based on the incorporation of probability theory in established life prediction methods, is presented. In this way, quantitative estimates of the lifetime distribution of a population are obtained based on anticipated, or specified, variations in component geometry, material processing sequences, and service loading. The application of this approach is demonstrated through a case study of an automotive transmission component. Finally, the relevance of such a capability to quality assurance issues, through determination of the sensitivity of service performance to design and manufacturing variables, is discussed.
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Authors
Citation
Thangjitham, S. and Landgraf, R., "Probability-Based Methods for Fatigue Analysis," SAE Technical Paper 920661, 1992, https://doi.org/10.4271/920661.Also In
References
- Fatigue Design Handbook AE 10 Soc. Auto. Engrs. Warrendale, PA 1988
- Durability by Design: Integrated Approaches to Mechanical Durability Assurance SP 730 Soc. Auto. Engrs. Warrendale, PA 1987
- Ang, A. H-S. Tang, W. H. Probability Concepts in Engineering Planning and Design Vol II Decision, Risk, and Reliability John Wiley & Sons New York 1984
- Rackwitz, R. Fiessler, B. “Structural Reliability under Combined Random Load Sequences,” Computers and Structures 9 1978 489 494