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Proceedings Paper

Advanced holographic nondestructive testing system for residual stress analysis
Author(s): Anatoli Kniazkov; Yuri I. Onischenko; George Eugene Dovgalenko; Gregory J. Salamo; Tatiana Yu. Latychevskaia
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Paper Abstract

The design and operating of a portable holographic interferometer for residual stress analysis by creating a small scratch along with a new mathematical algorithm of calculations are discussed. Preliminary data of the stress investigations on aluminum and steel alloys have been obtained by the automatic processing of the interference pattern using a notebook computer. A phase-shift compensation technique in real-time reflection interferometry is used to measure the out-of-plane stress release surface displacement surrounding a small scratch (25 micrometer depth and 0.5 mm width) in a plate with residual stress of around 50 MPa. Comparison between theoretical models for a rectangular and triangular shaped scratch with the experimental data are presented.

Paper Details

Date Published: 5 May 1999
PDF: 9 pages
Proc. SPIE 3687, International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (5 May 1999); doi: 10.1117/12.347399
Show Author Affiliations
Anatoli Kniazkov, Univ. of Arkansas (United States)
Yuri I. Onischenko, Univ. of Arkansas (United States)
George Eugene Dovgalenko, Univ. of Arkansas (United States)
Gregory J. Salamo, Univ. of Arkansas (United States)
Tatiana Yu. Latychevskaia, St. Petersburg State Technical Univ. (Switzerland)

Published in SPIE Proceedings Vol. 3687:
International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering
Alexander I. Melker, Editor(s)

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