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Proceedings Paper

The Theoretical Basis Of The Use Of Random Excitation Signals For Thermoelastic Stress Analysis
Author(s): Neil Harwood; William M. Cummings
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Paper Abstract

Over recent years the thermoelastic effect has been exploited successfully to measure full-field surface stress distributions on structures subjected to uniform cyclic loading conditions. The technique can provide engineers and designers with considerable insight into the quasistatic behaviour of structures. Software developed at the National Engineering Laboratory has enabled the thermoelastic technique to be extended to the variable-amplitude loading situation which is typically encountered in service applications. This paper analyses the theoretical basis of random signal processing, and presents experimental data from thermoelastic stress analysis tests performed under random-loading conditions, including modal behaviour.

Paper Details

Date Published: 1 April 1987
PDF: 12 pages
Proc. SPIE 0731, Stress Analysis by Thermoelastic Techniques, (1 April 1987); doi: 10.1117/12.937885
Show Author Affiliations
Neil Harwood, National Engineering Laboratory (UK)
William M. Cummings, National Engineering Laboratory (UK)


Published in SPIE Proceedings Vol. 0731:
Stress Analysis by Thermoelastic Techniques
B. C. Gasper, Editor(s)

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