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Proceedings Paper

Thermoelastic stress analysis: the mean stress effect in metallic alloys
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Paper Abstract

The primary objective of this study involved the utilization of the thermoelastic stress analysis (TSA) method to demonstrate the mean stress dependence of the thermoelastic constant. Titanium and nickel base alloys, commonly employed in aerospace gas turbines, were the materials of interest. The repeatability of the results was studied through a statistical analysis of the data. Although the mean stress dependence was well established, the ability to confidently quantify it was diminished by the experimental variations. If calibration of the thermoelastic response to mean stress can be successfully implemented, it is feasible to use the relationship to determine a structure residual stress state.

Paper Details

Date Published: 8 February 1999
PDF: 10 pages
Proc. SPIE 3585, Nondestructive Evaluation of Aging Materials and Composites III, (8 February 1999); doi: 10.1117/12.339842
Show Author Affiliations
Andrew L. Gyekenyesi, NASA Lewis Research Ctr. (United States)
George Y. Baaklini, NASA Lewis Research Ctr. (United States)

Published in SPIE Proceedings Vol. 3585:
Nondestructive Evaluation of Aging Materials and Composites III
George Y. Baaklini; Carol A. Nove; Eric S. Boltz, Editor(s)

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