Abstract
Laser based techniques for the generation and the detection of ultrasonic surface waves (SAW) are described. These methods were motivated by practical ultrasonic non -destructive testing (NDT) applications and are suitable for operation on rough surfaces which are typical to engineering materials. Wide strip laser illumination is used to generate SAW waveforms by means of a thermoelastic mechanism. For detection an holographic method has been developed, achieving sensitivities of the order of 0.1 A at 10 MHz bandwidth on rough aluminum surfaces.
| Original language | English |
|---|---|
| Pages (from-to) | 265-272 |
| Number of pages | 8 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 1038 |
| DOIs | |
| State | Published - 5 Jul 1989 |
| Event | 6th Meeting in Israel on Optical Engineering 1988 - Tel Aviv, Israel Duration: 19 Dec 1988 → 21 Dec 1988 |
Funding
| Funders | Funder number |
|---|---|
| Directorate General for Science Research and Development of the Commission of the European Communities | |
| National Council for Forest Research and Development |