LDVを用いた空間音場測定による高放射線環境下での機器異常診断技術の開発

Development of diagnostic technique for equipment abnormality under high radiation environment by spatial sound field measurement using LDV

村田 篤*; 猿田 晃一   ; 涌井 隆  ; Li, Y.*; 二川 正敏  ; 大島 良太*; 古河 裕彦*

Murata, Atsushi*; Saruta, Koichi; Wakui, Takashi; Li, Y.*; Futakawa, Masatoshi; Oshima, Ryota*; Furukawa, Hirohiko*

高放射線環境における異常診断法として、光音場計測技術の適用性を検討するために、レーザードップラー振動計(LDV)による音場測定を行った。LDV検出値の光路長依存性や音源周波数依存性などの実験結果と音場の数値解析結果に基づき、異常診断へ適用するときに重要となるLDV検出特性について述べる。

Characteristics of sound field measurement using a laser Doppler vibrometer (LDV) have been investigated with the aim of evaluating the applicability of the optical measurement method of sound fields to a diagnostic technique for equipment abnormality in high radiation environments. Important aspects of sound measurement using a LDV are discussed based on its dependence on optical path length and sound frequency in terms of anomaly detection and diagnosis in terms of anomaly detection and diagnosis.