High temperature crack monitoring apparatus
US5517861A · kind A · utility
10Cited by
16References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1994 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Oct 11, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0647
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for monitoring the growth of surface cracks in materials includes a servo-hydraulic test machine which applies a load to a specimen according to a predetermined loading regime designed to induce crack growth in the specimen, a UV laser for illuminating the specimen with a light having a frequency greater than the frequency of incandescent light, a UV video camera and a two dimensional imaging computer. Optionally, the two dimensional imaging computer can be used to control the servo-hydraulic test machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.