Collar for measuring the lateral deformation of a test piece during compression tests, such as uniaxial or triaxial compression tests
US7694581B2 · kind B2 · utility
3Cited by
8References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 2006 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Oct 31, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0256
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a collar for measuring the lateral deformation of a test piece during uniaxial or triaxial compression tests. According to the invention, the collar includes a metal hoop or a hoop that is made from composite materials, which can clasp the test piece and which is open. The free ends thereof are separated by a distance Δ. The inventive collar also includes a mechanism for directly or indirectly measuring the distance Δ. Between the free ends of the hoop, the mechanism includes at least one strain gauge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.