Device and process for the simultaneous measurement of the extent and the temperature of a crack at the surface of an electrically conductive solid body
US5758970A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1996 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Jun 3, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Two electrical wires are connected to the surface of an electrically conductive solid body at two measurement points located on either side of a crack in the surface of the body. The two wires form a thermoelectric couple. A constant DC current is applied to the body. The two wires are connected to a device for measuring the extent of the crack and another device for measuring the temperature of the crack. By measuring the potential difference during application and interruption of the DC electric current to the body, it is possible to simultaneously obtain a measurement of the extent of the crack and a measurement of the temperature of the crack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.