Method of leak detection using a releasable surface film
US5182941A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1992 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Jan 30, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting leaks through a surface using a flexible film releasably bonded to the surface. Surfaces of pressurized fluid holding structures having a large number of surface penetrations, such as rivets, tend to have problems with leaks. Leaks at these penetrations are detected by forming a continuous film, typically a polymer film over the surface of a closed structure, pressurizing the structure with a suitable fluid and detecting leaks by the bubbles that form in the film. Generally, the bubbles ar reaily apparent due to tint changes in the film areas no longer in contact with the structure surface. Bubbles are also easily detected by feel. The film is removed around bubbles and the leaking penetration is repaired. Those areas can again be coated with the film and the structure repressurized to detect any remaining leaks. This test can be repeated until all leaks are eliminated. The film is then stripped from the surface and the structure is ready for cleaning use or further processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.