Invention Grant
- Patent Title: 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
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Application No.: US15560481Application Date: 2016-03-24
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Publication No.: US10816511B2Publication Date: 2020-10-27
- Inventor: Laurent Laguerre , Olivier Durand , Remi Colin
- Applicant: SOLETANCHE FREYSSINET , INSTITUT FRANCAIS DES SCIENCES ET TECHNOLOGIES DES TRANSPORTS, DE L'AMENAGEMENT ET DES RESEAUX
- Applicant Address: FR Rueil Malmaison FR Champs-sur-Marne
- Assignee: SOLETANCHE FREYSSINET,UNIVERSITE GUSTAVE EIFFEL
- Current Assignee: SOLETANCHE FREYSSINET,UNIVERSITE GUSTAVE EIFFEL
- Current Assignee Address: FR Rueil Malmaison FR Champs-sur-Marne
- Agency: Dentons US LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@57010e1d
- International Application: PCT/FR2016/050671 WO 20160324
- International Announcement: WO2016/151260 WO 20160929
- Main IPC: G01N29/34
- IPC: G01N29/34 ; G01N29/44 ; G01N29/07
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.
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