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Proceedings Paper

Coatings for combined thermoelastic and photoelastic stress measurement
Author(s): Deonna F. Woolard; Mark K. Hinders
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Paper Abstract

Thermoelastic and photoelastic stress analysis systems effectively provide information about the sum and difference of the principal stresses, respectively. Combining these two full-field, non-contact NDE techniques allows the individual stress components to be measured. One of the main difficulties in merging these two systems is in identifying an appropriate surface coating. Thermoelasticity demands a highly emissive surface, while photoelasticity requires a strain-induced birefringent, transparent coating with a retro-reflective backing. A number of candidate coatings that are useful for combined photoelastic and thermoelastic stress measurement have been identified, with sample results given here. Issues associated with the practical implementation of combined thermoelastic and phtoelastic stress measurement are also discussed in this paper.

Paper Details

Date Published: 1 February 1999
PDF: 9 pages
Proc. SPIE 3587, Nondestructive Evaluation of Bridges and Highways III, (1 February 1999); doi: 10.1117/12.339913
Show Author Affiliations
Deonna F. Woolard, College of William and Mary (United States)
Mark K. Hinders, College of William and Mary (United States)


Published in SPIE Proceedings Vol. 3587:
Nondestructive Evaluation of Bridges and Highways III
Steven B. Chase, Editor(s)

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