| Numéro |
J. Phys. IV France
Volume 04, Numéro C7, Juillet 1994
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique |
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|---|---|---|
| Page(s) | C7-729 - C7-732 | |
| DOI | https://doi.org/10.1051/jp4:19947171 | |
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-729-C7-732
DOI: 10.1051/jp4:19947171
ETH Zurich, Institute of Quantum Electronics, 8093 Zurich, Switzerland
© EDP Sciences 1994
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-729-C7-732
DOI: 10.1051/jp4:19947171
Noncontact characterization of adhesion of surface layers by laser-generated acoustic waves
P. Weiss and M.W. SigristETH Zurich, Institute of Quantum Electronics, 8093 Zurich, Switzerland
Abstract
Laser-induced spallation is proposed as a powerful means for the investigation of adhesion properties of solid surface films. Ultrasonic pulses are produced at the back side of the sample by the impact of Nd :YAG-laser pulses. At the front side, the induced ultrasonic surface displacements are monitored with a 300 MHz bandwidth fiber-optic interferometer, which is proposed as a versatile point-detection ultrasonic transducer. The technique is applied to the time-resolved monitoring of laser-induced spallation and debonding of surface films.
© EDP Sciences 1994