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Proceedings Paper

Principles of Infrared Measurements and Review of Instrumentation Techniques for Thermoelastic Stress Analysis
Author(s): J. M.B. Webber
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Paper Abstract

This paper provides a state-of-the-art review of the techniques in the recent development in infrared measurement technology for experimental stress analysis. These techniques are based on the use of radiometric systems to determine by non-contact means the thermoelastic effect in structures and materials subjected to dynamic loading. The recent advent of highly sensitive infrared systems, some of which are capable of measuring dynamic temperature changes as small as 1 mK, has led to versatile instrumentation for the evaluation of stresses in engineering models and actual components. The most important feature of the techniques is that it provides a unique method of direct measurement of stress in a material of a test component by non-contact means. Methods have recently been developed to determine dynamic stresses over a frequency of less than 1 Hz up to many KHz. It is now recognised that the technique has become a new important tool for stress analysis and already considerable experience has been gained in practical application.

Paper Details

Date Published: 1 April 1987
PDF: 15 pages
Proc. SPIE 0731, Stress Analysis by Thermoelastic Techniques, (1 April 1987); doi: 10.1117/12.937882
Show Author Affiliations
J. M.B. Webber, Sira Limited (UK)

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

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