Sensor for detecting surface cracks in an article
US8196453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2007 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Nov 1, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N19/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A laminated sensor comprises a base stratum and a terminal stratum. The base stratum has a first surface that is affixed to a surface of a structure to be monitored. The terminal stratum is affixed to the opposite second surface of the base stratum. A connector is attached to the terminal stratum. The base stratum is provided with first and second channels and that are cut through the thickness of the base stratum. The terminal stratum is provided with holes that extend through the thickness of the terminal stratum. A first pair of the holes are positioned to register with the first channel, while a second pair of the holes are positioned to register with the second channel. A first conduit is formed by the first channel and the holes; while a second conduit is formed by the second channel and the holes. The connector connects with tubes to provide fluid communication between the conduits and a differential pressure monitoring system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.