US 5317901
NONDESTRUCTIVE TEST FOR COATED CARBON-CARBON COMPOSITE ARTICLES
Assignee
UNITED TECHNOLOGIES CORPORATION, HARTFORD, CONNECTICUT, A CORP OF DELAWARE
Filed
Dec 10, 1985
Granted
Jun 7, 1994
Location
PALM BEACH GAR. FL US
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: Google Patents
35 USC §181 Secrecy Order
Imposed
Jun 13, 1986
Rescinded
Jun 10, 1993
Duration
6 years, 12 months
Inventor
- 1ABDUS S. KHAN
Record Details
- Patent number
- US 5317901
- Application
- 00680742
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
Back to patent indexSource: USPTO 35 USC §181 secrecy order records