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- Title
The Influence of Mechanical Stresses in a D16 Aluminum-Alloy Plate on the Generation of Acoustic Waves under Laser Irradiation.
- Authors
Glazov, A. L.; Muratikov, K. L.
- Abstract
Laser generation of ultrasound in metals with internal mechanical stresses has been analyzed. The characteristics of a photoacoustic signal in the vicinity of a hole in a D16 alloy plate under the action of mechanical stresses have been studied. The discrepancy between the experimental results and predictions of the thermodynamic model for the dependence of the thermal expansion coefficient on mechanical stresses was found. For proper description of the signal characteristics in real metals, we have proposed to take into account the influence of the electron subsystem on laser generation of acoustic waves.
- Subjects
SOUND waves; THERMAL expansion; LASER ultrasonics; ALLOY plating; LASERS; IRRADIATION
- Publication
Technical Physics Letters, 2019, Vol 45, Issue 9, p902
- ISSN
1063-7850
- Publication type
Article
- DOI
10.1134/S1063785019090049