Apparatus for assessing degradation and estimating strength by using ultrasound and method for assessing degradation and estimating strength using the same
US10775351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2015 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Apr 30, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is an apparatus for assessing degradation and estimating strength by using ultrasound, in which the apparatus includes: an ultrasound transmitting unit making an ultrasound signal having a single frequency be incident in an inspected object; an ultrasound receiving unit receiving the ultrasound signal penetrating the inspected object or reflected on the inspected object; a signal processing unit calculating a propagation speed through a time interval of the ultrasound signal received by the ultrasound receiving unit and separates the received ultrasound signal into a fundamental frequency component and a harmonic component to calculate non-linear parameter, and measuring linear and non-linear elastic coefficients by using the propagation speed and the non-linear parameter; and a strength estimating unit obtaining a tensile curve by using the linear and non-linear elastic coefficients and estimating at least one of tensile strength and yield strength by using the tensile curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.