Nondestructive test for coated carbon-carbon composite articles
US5317901A · kind A · utility
4Cited by
12References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 1985 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Dec 10, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining whether surface connected, through thickness defects exist in a coated carbon-carbon composite article. The method involves the immersion of the coated article in a low viscosity liquid; if a stream of bubbles rises from the surface of the coating, such bubbles indicate the existence of at least one surface connected, through thickness defect in the coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.