Experimental investigation of longitudinal-wave pulses generated by a thermoacoustic emitter
Source abstract
Abstract
Experimental investigations of pulses of longitudinal acoustic waves generated in a metal by short laser pulses are presented. The beam pattern of acoustic radiation, the amplitudes and shapes of acoustic pulses as functions of the laser radiation intensity and laser spot dimension are discussed. The results are analyzed in terms of the model of a thermoacoustic emitter in the form of a heated disk generating a pulse of axial and radial stress through the thermoelastic and hydrodynamic mechanisms.
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Research context
OpenAlex topics: Thermography and Photoacoustic Techniques · Laser Material Processing Techniques · Welding Techniques and Residual Stresses
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References (2)
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1. Chabanov, V.E.,Lazernyi, ul’trazvukovoi kontrol’ materialov (Laser Ultrasonic Testing of Materials), Leningrad: Len. Gos. Univ., 1986.
2. Volegov, Yu.V., Petrov, Yu.V., and Shusharin, A.V., Mechanism of Generation of Acoustic Waves by Optical Laser Pulses,Fizicheskie metody ispytaniya materialov i veshchestv (Physical Methods of Testing of Materials), Collection of Research Papers, Chelyabinsk, 1992, pp. 62–82.