Patent · US Expired

Extensometer comprising a flexible sensing element and Bragg gratings

US7174061B2 · kind B2 · utility

5Cited by

0References

17Claims

0Family size

Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Stéphane Rougeault · Sceaux, FR
Pierre Ferdinand · Houilles, FR

Key dates

Filing date	Jan 30, 2004
Grant date	Feb 6, 2007
Priority date	—
Expiry date	Jan 30, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG01D11/245
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Extensometer with flexible test specimen and Bragg gratings applied in particular to the monitoring of concrete structures, is configured to measure deformations of a host material and comprises at least one test specimen which undergoes linear bending stresses, and at least one Bragg grating formed in an optic fibre and fixed to the test specimen. The extensometer configured such that any deformation of the host material is transmitted to the grating via the test specimen. The extensometer also comprises mechanical means which transform deformation of the material into bending of the test specimen, which deforms the grating.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.