Demonstration of heat resistant fiber Bragg grating sensors based on femtosecond laser processing for vibration monitoring and temperature change

Nishimura, Akihiko; Takenaka, Yusuke*; Furuyama, Takehiro*; Shimomura, Takuya; Terada, Takaya; Daido, Hiroyuki

Journal of Laser Micro/Nanoengineering, 9(3), p.221 - 224, 2014/11

https://doi.org/10.2961/jlmn.2014.03.0007

Heat resistant FBG sensors were developed by femtosecond laser processing to apply them to high temperature operated piping system of nuclear power plants. The FBG sensor was installed on the surface of a steel blade and a vibration test was conducted to detect the resonant vibration frequency of the vibrating blade. The FBG sensor had the heatproof performance at 600C. A frequency stabilized sensing system using a tunable laser was tested for structural health monitoring in daily operation of nuclear power plants. The FBG sensor was installed on the surface of a steel blade for vibration induced strain measurements. Welding, brazing, soldering and noble metal powder adhesive were discussed for molding the FBG sensors.

A New optical instrumentation system for advanced light water reactor

Kakuta, Tsunemi; Yamagishi, Hideshi; Tabata, Hiroaki*; Urakami, Masao*

Dai-7-Kai Doryoku Enerugi Gijutsu Shimpojiumu Koen Rombunshu (00-11), p.254 - 257, 2000/11

no abstracts in English

Electronics and pulse counting error of position sensitive fission counters with a transmission delay line structure

JAERI-M 94-010, 13 Pages, 1994/02

JAERI-M-94-010.pdf:0.61MB

no abstracts in English

Measurement of neutron flux in the AVR

; ; ; Sakasai, Kaoru; H.Brixy*; J.Oehmen*; R.Hecker*; H.-J.Hantke*

Juel-2467, 43 Pages, 1991/04

no abstracts in English

Current status and problems of reactor instrumentation II; Nuclear instrumentation systems for reactor control

Nihon Genshiryoku Gakkai-Shi, 14(7), p.369 - 373, 1972/07

no abstracts in English

Instrumentation for reactors; Electronics in the atomic energy technology

;

Denki Tsushin, 22(155), p.39 - 43, 1959/00

no abstracts in English