Theoretical Considerations For Determining Stress Intensity Factors Via Thermoelastic Stress Analysis

Stephan R. Pukas

doi:10.1117/12.937890

1 April 1987 Theoretical Considerations For Determining Stress Intensity Factors Via Thermoelastic Stress Analysis

Stephan R. Pukas

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Proceedings Volume 0731, Stress Analysis by Thermoelastic Techniques; (1987) https://doi.org/10.1117/12.937890
Event: Stress Analysis by Thermoelastic Techniques, 1987, London, United Kingdom

Abstract

The basic theory for determining stress intensity factors by thermoelastic stress analysis is outlined. The contribution of higher order terms to the solution is included. Attention is focused in the main upon Mode I, crack tip opening, failure. Various possible methods for obtaining stress intensity factors from experimental results are discussed. The advantages and disadvantages of each technique are commented upon. The use of some of the methods is demonstrated by a theoretical study of a crack tip stress field. This highlights any difficulties that might be encountered in the analysis of data. It also gives an indication of the accuracy that can be achieved under ideal experimental conditions. Consideration is also given to the way in which experimental data can distort results. In particular attempts are made to address the problem associated with scanning at increments smaller than the available resolution.

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Stephan R. Pukas "Theoretical Considerations For Determining Stress Intensity Factors Via Thermoelastic Stress Analysis", Proc. SPIE 0731, Stress Analysis by Thermoelastic Techniques, (1 April 1987); https://doi.org/10.1117/12.937890

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