Method for measuring stress
US5289387A · kind A · utility
5Cited by
15References
20Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 20, 1990 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Jul 20, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02827
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Stress in a substance is measured by utilizing the transfer characteristics of elastic waves, such that elastic waves input to a substance are displaced by the stress load within the substance. Waves input to the substance and output therefrom by transmission or reflection are compared by fast fourier transform analysis, obtaining a wave attenuation factor quantifying the magnitude of stress in the substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.