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Report No.

Vibration and deformation monitoring for high temperature structures by heat-resistant FBG

Shimada, Yukihiro; Masuzumi, Takashi; Nishimura, Akihiko ; Doi, Motoo*; Tsukimori, Kazuyuki

We performed irreversible lattice processing into the quartz board using the technique of non-heat processing which used femtosecond laser. The heat-resistant evaluation was performed for the purpose of development of heat-resistant FBG for always supervising heat transfer system vibration and modification of a high temperature structure. As a result, the intensity ratio of diffraction light did not change but after rising temperature up to 950 $$^{circ}$$C showed that the system of heat-resistant FBG was effective as a local vibration of high temperature piping, and the distorted detection technique.



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