Laser ultrasound for nondestructive testing
Abstract
Noncontact techniques for generating and detecting high frequency ultrasonic waves ( 1 MHz) are being explored using pulsed laser thermoelastic transduction and heterodyne interferometry respectively. In addition, holographic projection techniques are being investigated for beam shaping and beam steering of the thermoelastic waves. Possible applications of this technology include performance of ultrasonic nondestructive testing in hostile or inaccessible environments.
- Publication:
-
Interim Report Naval Air Development Center
- Pub Date:
- March 1982
- Bibcode:
- 1982nadc.rept.....S
- Keywords:
-
- Nondestructive Tests;
- Pulsed Lasers;
- Thermoelasticity;
- Ultrasonic Radiation;
- Wave Generation;
- Aircraft Construction Materials;
- Beams (Radiation);
- Holography;
- Interferometry;
- Lasers and Masers