Excitation modes and parameters of stress waves in metal exposed to single laser pulses
Abstract
Four modes of excitation of pulsed stresses using transparent and absorbing coatings were studied. Laser radiation was focused in a 5-mm-diameter and 1 to 20 mm thick. The stress wave profile was recorded by quartz piezoelectric plates 5 mm in diameter and 0.3 mm thick. The dimensions and characteristics were selected to yield waves with minimal distortion. Three types of coatings were studied a thin layer of black enamel, a thick glass plate, and their combination. It was found that the combined use of the rigid barrier and volatile nontransparent coating on the surface of the metal increased the amplitude of the stress pulse excited. The waves propagate as elastic longitudinal waves.
- Publication:
-
USSR Rept Mater Sci Met JPRS
- Pub Date:
- December 1984
- Bibcode:
- 1984RpMSM.......19A
- Keywords:
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- Aluminum Alloys;
- Excitation;
- Laser Applications;
- Metals;
- Pulsed Lasers;
- Stress Waves;
- Coatings;
- Laser Outputs;
- Metallurgy;
- Piezoelectricity;
- Surface Finishing;
- Wave Propagation;
- Lasers and Masers