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Proceedings Paper

Measurement of residual stresses using a radial in-plane digital speckle pattern interferometer and local heating: recent advances
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Paper Abstract

This paper presents an application of a radial in-plane digital speckle pattern interferometer and a local heating combined system to measure residual stresses in ductile materials. The system allows the local heating of a small spot and the measurement of the radial in-plane displacement field generated around it. In order to quantify the residual stresses from the measured displacement field, the thermomechancial problem is simulated using the finite element method and a modified hole-drilling model is applied. The performance of the system is evaluated by measuring the stress generated by a preloaded specimen. It is shown that the combined system can measure residual stresses with a typical error of approximately 5%.

Paper Details

Date Published: 14 February 2005
PDF: 8 pages
Proc. SPIE 5776, Eighth International Symposium on Laser Metrology, (14 February 2005); doi: 10.1117/12.611743
Show Author Affiliations
Matías R. Viotti, CONICET-Univ. Nacional de Rosario (Argentina)
Armando Albertazzi Gonçalves Jr., Univ. Federal de Santa Catarina (Brazil)
Guillermo H. Kaufmann, CONICET-Univ. Nacional de Rosario (Argentina)
Univ. Nacional de Rosario (Argentina)

Published in SPIE Proceedings Vol. 5776:
Eighth International Symposium on Laser Metrology
R. Rodriguez-Vera; F. Mendoza-Santoyo, Editor(s)

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