Measuring device for determining cracks
US4629318A · kind A · utility
13Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1982 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Oct 22, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/027
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a measuring device for determining cracks. Light conductive fibers or film are provided as crack detectors in this measuring device which fibers or films are applied directly upon the construction parts. Light is coupled into these light conductive fibers by means of a coupler and the passage of light is monitored at the free end. A fiber fracture serves as irreversible crack indication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.