Nonlinear Photoacoustic Response on Mechanical Stresses in the Vicinity of a Hole in a D16 Aluminum-Alloy Plate

Autor:	A. L. Glazov, K. L. Muratikov, Nikita F. Morozov
Rok vydání:	2020
Předmět:	010302 applied physics Photoacoustic effect Materials science Physics and Astronomy (miscellaneous) Physics::Medical Physics Physics::Optics 02 engineering and technology Electron Radiation 021001 nanoscience & nanotechnology Laser 01 natural sciences Signal law.invention Nonlinear system Thermoelastic damping law 0103 physical sciences Composite material 0210 nano-technology Frequency modulation
Zdroj:	Technical Physics Letters. 46:171-174
ISSN:	1090-6533 1063-7850
Popis:	Characteristics of a photoacoustic signal depending on mechanical stresses in the vicinity of a hole in a D16 aluminum-alloy plate have been analyzed. A new nonlinear photoacoustic effect was found that consists in the occurrence of a nonlinear component in the photoacoustic signal depending on mechanical stresses in the vicinity of a hole. This dependence is detected in the signal on the main modulation frequency of laser radiation. We have proposed a theoretical description of the detected effect of thermoelastic generation of ultrasound in stressed metals based on taking into account the thermal impact of laser radiation on their electron subsystem.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ba97437c3744cda19f6c2570bce9581b https://doi.org/10.1134/s1063785020020200 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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