Deformation measurement sensor operating in a hostile environment and including an optical movement measurement module, and measurement system using said sensor

US9404736B2 · kind B2 · utility

Assignee

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

Inventors

• Stéphane Gaillot · Toulouse, FR
• Nicolas Regazzoni · Aix-en-Provence, FR
• Guy Cheymol · Les Ulis, FR

Key dates

• Filing date: Aug 9, 2012
• Grant date: Aug 2, 2016
• Expiry date: Oct 21, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B11/18
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Deformation measurement sensor operating in a hostile environment and including an optical movement measurement module, and measurement system using said sensor.The sensor includes: an enclosure comprising an opening; a movable element having a first surface that is brought into contact with an object (4) that can deform, for example a nuclear fuel rod, and a second surface that is reflective and extends into the enclosure through the opening; a sealed, resilient connecting component performing a return function between the element and the enclosure; and, inside the enclosure, a module for creating an interference light using a light reflected by the second surface of the element. Deformation of the object results in a modification to the interference light that is representative of the deformation.