1 April 1987 Application of the Thermoelastic Effect to Typical Aerospace Composite Materials
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Proceedings Volume 0731, Stress Analysis by Thermoelastic Techniques; (1987) https://doi.org/10.1117/12.937889
Event: Stress Analysis by Thermoelastic Techniques, 1987, London, United Kingdom
Abstract
This paper describes a series of laboratory tests undertaken to demonstrate the application of thermoelastic measurements for use on typical woven carbon epoxy composites used in the aerospace industry. The tests undertaken showed that the woven carbon epoxy produced linear thermoelastic output with increasing load. No significant changes in thermoelastic output were observed with changes in warp direction relative to load direction. A carbon aluminium honeycomb specimen was examined and clear differences in the stress distribution were seen between the two surfaces of the honeycomb. These are attributed to local geometry changes resulting from the manufacturing methods. The results demonstrate the suitability of the thermoelastic effect to assess non-homogeneous anisotropic materials. Considerable time and cost savings could be made by the application of thermoelastic techniques to existing composite fatigue and mechanical testing programmes.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. H. Owens, R. H. Owens, } "Application of the Thermoelastic Effect to Typical Aerospace Composite Materials", Proc. SPIE 0731, Stress Analysis by Thermoelastic Techniques, (1 April 1987); doi: 10.1117/12.937889; https://doi.org/10.1117/12.937889
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