Experimental results on the behavior of laser ultrasonic signals near holes in stressed ceramics and metals are presented. The data obtained are analyzed within the framework of the standard theory of thermoelasticity. It is shown that this approach is not able to explain the behavior of laser ultrasonic signals in stressed materials. A new model of thermoelasticity taking into account thermal perturbation of non-stationary defect states with relaxation is presented and analyzed. It is demonstrated that strong stress dependence of the laser ultrasonic signals provides an opportunity to estimate mechanical stresses in different materials. An example of mechanical stress effect on the laser ultrasonic image near Rockwell indentation zones in metals is presented.
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28 June 2022
Research Article|
June 24 2022
Laser ultrasound imaging of mechanical stresses near holes and indented areas: Experimental results and theoretical model
Special Collection:
Non-Invasive and Non-Destructive Methods and Applications Part I — Festschrift
A. L. Glazov
;
A. L. Glazov
a)
(Conceptualization, Data curation, Formal analysis, Investigation, Software, Validation, Visualization, Writing – original draft, Writing – review & editing)
Ioffe Institute
, St. Petersburg 194021, Russia
a)Author to whom correspondence should be addressed: glazov.holo@mail.ioffe.ru
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K. L. Muratikov
K. L. Muratikov
(Conceptualization, Formal analysis, Investigation, Supervision, Validation, Writing – original draft, Writing – review & editing)
Ioffe Institute
, St. Petersburg 194021, Russia
Search for other works by this author on:
a)Author to whom correspondence should be addressed: glazov.holo@mail.ioffe.ru
Note: This paper is part of the Special Topic on: Non-Invasive and Non-Destructive Methods and Applications Part I Festschrift.
J. Appl. Phys. 131, 245104 (2022)
Article history
Received:
February 15 2022
Accepted:
June 05 2022
Citation
A. L. Glazov, K. L. Muratikov; Laser ultrasound imaging of mechanical stresses near holes and indented areas: Experimental results and theoretical model. J. Appl. Phys. 28 June 2022; 131 (24): 245104. https://doi.org/10.1063/5.0088327
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