Cooling hole inspection
US4644162A · kind A · utility
35Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1984 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Sep 20, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In the present invention, the temperatures of cooling passages in a gas turbine engine blade are changed, as by forcing a heated gas through them. The infrared signatures of the channels are measured during the initial temperature transient of the channels and the signatures are compared with a reference. The reference may be the signature of other channels on the same blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.