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論文
SUS304鋼の高温疲労損傷初期段階における磁気特性変化
著者:
高屋 茂,Shigeru TAKAYA,永江 勇二,Yuji NAGAE
発刊日:
公開日:
キーワードタグ:
Developing a precise nondestructive estimation method of material degradation before crack initiation will contribute to enhancement of safety and economical efficiency of a fast breeder reactor plant. Magnetic property is expected to be an effective indicator. In this study, fatigue tests on SUS304 stainless steel at 650°C were conducted until transition hardening region, 25% and 50% of the number of cycles to fracture and the distribution of magnetic flux density from each sample was measured to r...
英字タイトル:
Magnetic Property Change of SUS304 Stainless Steel at Initial State of Fatigue Damage in High Temperature Environment
論文
原子力発電プラントの現場作業支援のための拡張現実感用トラッキング手法の開発と評価
著者:
石井 裕剛,Hirotake ISHII,卞 志強,Zhiqiang BIAN,関山 友輝,Tomoki SEKIYAMA,下田 宏,Hiroshi SHIMODA,吉川 榮和,Hidekazu YOSHIKAWA,泉 正憲,Masanori IZUMI,兼平 宜紀,Yoshiki KANEHIRA,森下 喜嗣,Yoshitsugu MORISHITA
発刊日:
公開日:
キーワードタグ:
This study aims at developing an augmented reality system to support maintenance work of nuclear power plants. An accurate and wide-range tracking method is required as a key technology in order to realize the system. In this study, a new tracking method using multi-camera and gyro sensor has been developed in order to enlarge the area where the tracking is available with limited number of markers. Experimental evaluation result shows that the area where the developed method can cover is about 3 time...
英字タイトル:
Development and Evaluation of Tracking Method for Augmented Reality System for Nuclear Power Plant Maintenance Support
論文
部分接触SCCの渦電流探傷による新しい深さサイジング法
著者:
兼本 茂,Shigeru KANEMOTO,程 衛英,Weiying CHENG,志波 光晴,Mitsuharu SHIWA,古村 一朗,Ichiro KOMURA
発刊日:
公開日:
キーワードタグ:
A partial-contact stress corrosion crack (SCC) is electrically modeled as a crack region with non-zero conductivity in eddy current testing (ECT). This partial-contact effect is excluded by an optimally designed crack-conductivity-insensitive depth sizing index, and consequently the master curves obtained from electric-discharge machining (EDM) notches can be utilized directly in the depth sizing of SCCs. This approach is numerically validated and applied to the characterization of SCCs in SUS304 from...
英字タイトル:
A New Depth Sizing Method for Partial-Contact Stress Corrosion Cracks from ECT Signals
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