Advanced holographic nondestructive testing system for residual stress analysis

Anatoli Kniazkov; Yuri I. Onischenko; George Eugene Dovgalenko; Gregory J. Salamo; Tatiana Yu. Latychevskaia

doi:10.1117/12.347399

5 May 1999 Advanced holographic nondestructive testing system for residual stress analysis

Anatoli Kniazkov, Yuri I. Onischenko, George Eugene Dovgalenko, Gregory J. Salamo, Tatiana Yu. Latychevskaia

Proceedings Volume 3687, International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering; (1999) https://doi.org/10.1117/12.347399
Event: International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, 1998, St. Petersburg, Russian Federation

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.

Citation Download Citation

Anatoli Kniazkov, Yuri I. Onischenko, George Eugene Dovgalenko, Gregory J. Salamo, and Tatiana Yu. Latychevskaia "Advanced holographic nondestructive testing system for residual stress analysis", Proc. SPIE 3687, International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (5 May 1999); https://doi.org/10.1117/12.347399

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