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Application of a fiber optic grating strain sensor for the measurement of strain under irradiation environment

Kaji, Yoshiyuki  ; Matsui, Yoshinori ; Kita, Satoshi; Ide, Hiroshi  ; Tsukada, Takashi ; Tsuji, Hirokazu

In the Japan Atomic Energy Research Institute (JAERI), in-pile strain measurement techniques have been developed using the Japan Materials Testing Reactor (JMTR). In order to evaluate the performance of fiber optic grating sensors under irradiation environment, heat-up and performance tests at elevated temperatures before irradiation and in-pile tests were performed in JMTR. It was determined that it is possible to measure strain under irradiation environment below 1$$times$$1023n/m$$^{2}$$ (E$$>$$1MeV) by a fiber optic grating sensor, because in-pile temperature characteristics were in good agreement with out-of-pile test results.

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Category:Nuclear Science & Technology

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