Method for detecting and characterizing defects in a heterogenous material via ultrasound
US10533977B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2015 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Sep 11, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N29/449
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting and characterizing defects in a heterogeneous material via ultrasound. The method includes the following steps: emitting ultrasound waves from an emitting ultrasound transducer placed against the material; acquiring, using a receiving ultrasound transducer in various positions relative to the material, a plurality of time signals, representing the amplitude of the sound propagated in the material as a function of time, for a position of the receiving ultrasound transducer; determining a time function representing a spatially averaged power of the time signals that correspond to different positions of the receiving transducer; and—normalizing the time signals by the time function so as to obtain normalized time signals. The defects in the material are detected from the normalized tune signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.