Abstract
Many industrial processes require non-contact sensors for various reasons, including high temperature, moving parts, hostile environment (viz. nuclear radiation, high power laser radiation, etc.) or simply the necessity for remoteness. This paper presents a review of our recent research and development on the measurement of out-of-plane displacement by four laser optical methods. These are, (1) a point displacement method at 30 Hz, (2) a shearographic fringe imager in the kHz frequency range, (3) a double probe interferometer for time-of-flight measurements in the low MHz frequency range, and (4) a Fabry-Perot speckle interferometer for measurement of relative displacement amplitude also in the low MHz range. Each of the methods is presented in the context of an industrial application.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 171-182 |
| Number of pages | 12 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3581 |
| State | Published - Dec 1 1998 |
| Event | Proceedings of the 1998 Conference on Acousto-Optics and Applications III - Gdansk-Jurata, Pol Duration: May 18 1998 → May 22 1998 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering