Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
65 (1994), S. 1091-1093
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Giant surface acoustic wave (SAW) pulses have been generated by implementing on the surface of a solid an array of strip thermoelastic sources. It is shown experimentally, with a 16-beam pulsed YAG laser, that the delays introduced between the laser emission times allow the constructive summation of the SAW pulses. Mechanical displacements larger than 20 nm on a steel sample and 50 nm on aluminum were detected by a heterodyne optical interferometer. Examples of noncontact and nondestructive detection of thin surface breaking slots are presented.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.112107
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