Method for detecting a defect in a metal wire of a set of metal wires, in particular for an anchoring area of a civil engineering structure
US10816511B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 24, 2016 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Jul 30, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2626
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method for detecting defects of at least one metal wire of a set of metal wires, in particular in a cable, the method including: a step of emitting a high-frequency ultrasound signal around a so-called specific frequency in the metal wire; a step of reflecting said ultrasound signal in the metal wire; and a step of receiving the reflected ultrasound signal. The emitted ultrasound signal enables the energisation of at least one high-frequency wave capable of propagating in a longitudinal direction of the metal wire and having a phase velocity that is slightly higher than a compression volume wave velocity in the metal from which the metal wire is made.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.