Method of and apparatus for the measurement of at least one mechanical property of an elastic material
US4297884A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1979 |
| Grant date | Nov 3, 1981 |
| Priority date | — |
| Expiry date | Aug 10, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0089
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Young's modulus and/or the internal damping factor of an elastic material is obtained by subjecting an area of the material to a sustained vibration. The presence of the material being tested changes the resonance of a mechanical resonator and determination of the changed resonance peak enables the required elastic characteristics to be obtained. The sample may be subjected to varying tension during testing and can conveniently be vibrated by signals obtained from a variable frequency generator although, preferably, an electronic circuit for vibrating the resonator has a feed-back loop to operate as an electro-mechanical auto-oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.