Electromagnetic acoustic transducer for bolt tension and load measurement
US5499540A · kind A · utility
20Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1994 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Feb 15, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2691
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for measuring a load on a part such as a bolt, comprises a socket having walls defining an interior space wherein the socket engages the bolt for transmitting a load to the bolt. An electromagnetic acoustic transducer comprising a magnet and a coil is located in the interior space of the socket near the bolt. The coil provides a current while the magnet provides a magnetic field such that the magnet and the coil generate an ultrasonic signal within the bolt. A detector is used to detect and measure a change in the ultrasonic signal at the bolt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.