Instrument for measuring dynamic viscoelastic properties
US4352292A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1980 |
| Grant date | Oct 5, 1982 |
| Priority date | — |
| Expiry date | Jul 28, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/445
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for measuring the dynamic material constants of rur compounds. The rubber compound is tested in strip form by attaching one end of the strip to an electromechanical shaker while the opposite end of the strip is suspended under constant tension. The electromechanical shaker propagates an acoustic wave in the test strip and a piezoelectric transducer positioned at a first point on the test strip measures the mechanical response of the strip for phase and amplitude. The shaker is programmed to step piecewise over the frequency range from 100 Hz to 40 KHz by a frequency synthesizer. The distance between the shaker and the transducer is changed and data is obtained for a second point on the strip. The test values obtained are used to calculate Young's Modulus and the loss factor for the rubber compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.