Method and apparatus for monitoring cracks of a rotatable body
US4685335A · kind A · utility
30Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1984 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Dec 14, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2693
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for monitoring cracks of a rotatable body by detecting cracks by measuring accoustic emission signals and evaluating the depth of cracks from the result of the comparison of assumed vibrations of the rotatable body and its measured vibrations. By this method and apparatus not only the beginning of cracking of the rotatable body, but also the progress of cracking on an online basis can be detected and monitored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.