Taku ARAI
著者に関連した記事は3件です。
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第11回
BWR 環境で長期使用されたステンレス鋳鋼のミクロ組織
著者:
澤部 孝史,Takashi SAWABE,土肥 謙次,Kenji DOHI,野本 明義,Akiyoshi NOMOTO,新井 拓,Taku ARAI
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atom probe tomography cast stainless steel G-phase nanoindentation testing phase decomposition solution treatment thermal aging
澤部 孝史,Takashi SAWABE,土肥 謙次,Kenji DOHI,野本 明義,Akiyoshi NOMOTO,新井 拓,Taku ARAI
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atom probe tomography cast stainless steel G-phase nanoindentation testing phase decomposition solution treatment thermal aging
Microstructure in a cast stainless steel used for a PLR pump casing cover in a BWR was investigated by atom probe tomography and nanoindentation testing. Ferrite phase decomposition and G-phase precipitation were no t observed in the as-received PLRP casing cover. Thermal aging and solution treatment were carried out on the as-received PLRP casing cover and an unused model alloy of cast stainless steel. The ferrite phase decomp osition and G-phase precipitates in the thermal aged model alloy disappeared af...
英字タイトル:
Microstructure in cast stainless steel used for long-term in BWR environment
英字タイトル:
Microstructure in cast stainless steel used for long-term in BWR environment
第10回
国内原子力発電所トラブル情報分析に基づく疲労損傷事象に対する安全性向上に関する検討について
著者:
松下 幹弥,Mikiya MATSUSHIMA,中村 隆夫,Takao NAKAMURA,新井 拓,Taku ARAI
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failure database fatigue failure fluid vibration fretting fatigue high-cycle fatigue low-cycle fatigue maintenance program mechanical vibration NUCIA safety evaluation in system level
松下 幹弥,Mikiya MATSUSHIMA,中村 隆夫,Takao NAKAMURA,新井 拓,Taku ARAI
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failure database fatigue failure fluid vibration fretting fatigue high-cycle fatigue low-cycle fatigue maintenance program mechanical vibration NUCIA safety evaluation in system level
After Fukushima-Daiichi accident, nuclear power plants are highly requested to enhance safety against severe accident. It is important to prevent fatigue failure for operating nuclear power plants, especially pressure boundary of compon ts to ensure safety. This paper studies the failure database of nuclear power plant in Japan (NUCIA) and extracts the events caused by fatigue failure. Fatigue failure can be classified according to fatigue mechanism such as mechanical vibration, fluid vibration, high-cycl...
英字タイトル:
Study of fatigue failures to improve safety based on the analyses of failure database in Japanese nuclear power plant
英字タイトル:
Study of fatigue failures to improve safety based on the analyses of failure database in Japanese nuclear power plant
論文
配管系の弾塑性解析手法の検討(その１)
著者:
小島 信之,Nobuyuki KOJIMA,蒲谷 拓郎,Takuro KABAYA,荒井 雅史,Masashi ARAI,廣内 悟,Satoru HIROUCHI,板東 雅嗣,Masatsugu BANDO
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carbon steel piping curve of fatigue elasto-plastic analysis method fatigue life strain range
小島 信之,Nobuyuki KOJIMA,蒲谷 拓郎,Takuro KABAYA,荒井 雅史,Masashi ARAI,廣内 悟,Satoru HIROUCHI,板東 雅嗣,Masatsugu BANDO
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carbon steel piping curve of fatigue elasto-plastic analysis method fatigue life strain range
This report describes an elasto-plastic analysis method which can be applied for the actual aseismic design of nuclear carbon steel piping systems. This analysis method follows the one developed by the related JSME tasks. Using this analysis method, the test result has been reproduced to the safe side for the strain range used as the intensity evaluation index of carbon steel piping. Furthermore, fatigue life has also been reproduced to the safe side by using the curve of fatigue of carbon steel piping upon...
英字タイトル:
Investigation on Method of Elasto-Plastic Analysis for Piping System (No.1)
英字タイトル:
Investigation on Method of Elasto-Plastic Analysis for Piping System (No.1)