第12回
A Two-Dimensional EMAT Code for Non-Magnetic Materials using a Coupled/Uncoupled Formulation
著者:
Ovidiu MIHALACHE,Daniel GARCIA RODRIGUEZ,Toshihiro YAMAMOTO,Weiying CHENG
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キーワードタグ:
A previously introduced two-dimensional EMAT (Electro-Magnetic Acoustic Transducer) simulation code developed in-house at JAEA, based on both coupling/uncoupling of eddy currents and wave displacement in a non-magnetic material is analyzed against 3D numerical simulations and experimental wave displacements performed by JAPEIC. The experimental setup visualizes wave propagations along the vertical surface of a stainless steel plate using a piezoelectric sensor, while the 3D simulations were performed u...
英字タイトル:
A Two-Dimensional EMAT Code for Non-Magnetic Materials using a Coupled/Uncoupled Formulation
第3回
Detection of EDM Defects Under Monju Support Plate Using Experimental Data from Remote Field Eddy Current Probes and a Multi-frequency Algorithm
著者:
Ovidiu MIHALACHE,Toshihiko YAMAGUCHI,Masashi UEDA,Center Takuya YAMASHITA,
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This paper describes detection of electro-discharged machine (EDM) defects in magnetic steam generator (SG ) tubes of Monju fast breeder reac tor (FBR). The EDM defects are located under support plate (SP), on the outer tube surface and they are detected by a remote field eddy curre nt probe. Using the experimental measurements and a multi frequency algorithm, the defect signal can be extracted from the SP signal. The pa rameters of the multi-frequency algorithm were calculated by comparing SP measurements...
英字タイトル:
Detection of EDM Defects Under Monju Support Plate Using Experimental Data from Remote Field Eddy Current Probes and a Multi-frequency Algorithm
第5回
Simulations and Measurements of Sodium Effect on the ECT Signal for SG Tubes of FBR
著者:
Ovidiu MIHALACHE,Toshihiko YAMAGUCHI,Masashi UEDA,

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Japan Atomic Energy Agency, FBR Research Center Shinya MIYAHARA, Japan Atomic Energy Agency, FBR Research Center The present p aper estimates using numerical simulations the eddy current effect of the sodium layer located outside of steam generator tube s of fast breeder reactors. Variations in the outside tube defect signal are computed by finite element simulations. The numer ical model of sodium layer is based on the experimental determination of the sodium layer using a test tank sodium experiment....
英字タイトル:
Simulations and Measurements of Sodium Effecton the ECT Signal for SG Tubes of FBR
第5回
伝熱管内壁検査補修技術開発の概要
著者:
西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA,山口 智彦,Toshihiko YAMAGUCHI,山下 卓哉,Takuya YAMASHITA,田川 明広,Akihiro TAGAWA,ミハラケ オビデウ,Ovidiu MIHALACHE,島田 幸洋,Ukihiro SHIMADA
発刊日:
公開日:
キーワードタグ:
A hybrid optical fiber scope and a laser processing head were combined with an eddy current testing un it for the inspection and repairing for Fast Breeder Reactor's heat exchanger pipes. The project propo ses an effective cost reduction method for maintenance of FBR by extension of the heat exchanger's lif etime. By the end of March 2010, a prototype probing system for heat exchanger pipes will be completed....
英字タイトル:
Development of Inspection and Repairing Technology for FBR Heat Exchanger Pipes
第6回
伝熱管内壁検査補修技術開発(その2)ソフトウエア開発と性能試験準備
著者:
西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA,山口 智彦,Toshihiko YAMAGUCHI,赤津 朋宏,Tomohiro AKATSU,関 健史,Takeshi SEKI,ミハラケ オビデウ,Ovidiu MIHALACHE,島田 幸洋,Yukihiro SHIMADA,田川 明広,Akihiro TAGAWA,山下 卓哉,Takuya YAMASHITA
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In order to maintain FBR heat exchanger tubes, a new probe system was designed. A coupling u nit and operational software are key components in the second year. The coupling unit to com bine a high energy laser beam and optical fiberscope images was developed. The operational s oftware successfully controlled an eddy current testing device and a laser processing head....
英字タイトル:
Development of Inspection and Repairing Technology for FBR Heat Exchanger tubes (II)Preparation of Operation Software and Performance Check
第9回
高速炉の蒸気発生器伝熱管用 マルチコイル型 RF-ECT センサの開発
著者:
山口 智彦,Toshihiko YAMAGUCHI,ミハラケ ビック,Ovidiu MIHALACHE,上田 雅司,Masashi UEDA,山下 卓哉,Takuya YAMASHITA
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公開日:
キーワードタグ:
A new design was adopted for SG of JSFR (Japan Sodium-cooled Fast Reactor) using double-wall tubes. The present paper estimates and assess the defects detection in double-wall SG tubes for JSFR using Multiple RF-ECT sensor. We confirmed that proposed Multiple RF-ECT sensor has a high sensitivity to detect small defects....
英字タイトル:
Development of Multi-coil RF-ECT Sensor for JSFR SG tubes