Method and apparatus for measuring strain within a ferromagnetic material by sensing change in coercive field
US5142227A · kind A · utility
18Cited by
4References
1Claims
0Family size
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Key dates
| Filing date | Jun 4, 1990 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Jun 4, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/96
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Strain within a substrate is measured by attaching thereto a magnetic circuit comprising a magnetostrictive, soft ferromagnetic element, and sensing a change in the coercive field of the element caused by strain therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.