Yu Itabashi

Remaining Life Estimation Technology of AC Mill Motors for Steel Rolling

Fumihiko Hironaka, Kenichiro Takahashi, Yu Itabashi, Yuji Marutani et autres

Alternating Current (AC) mill motors for steel rolling were introduced around 1990.

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Verification of Probabilistic Fracture Mechanics Analysis Code for Reactor Pressure Vessel

Yinsheng Li, Genshichiro Katsumata, Koichi Masaki, Shotaro Hayashi et autres

Abstract Nowadays, it has been recognized that probabilistic fracture mechanics (PFM) is a promising methodology in structural integrity assessments of aged pressure boundary components of nuclear power plants, because it can rationally represent the influencing parameters in their inherent probabilistic distributions without …

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Recent verification activities on probabilistic fracture mechanics analysis code PASCAL4 for reactor pressure vessel

Kai Lü, Jinya Katsuyama, Yinsheng Li, Yuhei Miyamoto et autres

Probabilistic fracture mechanics (PFM) is considered a promising methodology in assessing the integrity of structural components in nuclear power plants because it can rationally represent the influence parameters in their probabilistic distributions without over-conservativeness. In Japan, Japan Atomic Energy Agency has developed …

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Activities of Working Group on verification of PASCAL. Fiscal years 2016 and 2017

Yinsheng Li, Takatoshi Hirota, Yu Itabashi, Masato Yamamoto et autres

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VERIFICATION OF A PROBABILISTIC FRACTURE MECHANICS CODE PASCAL4 FOR REACTOR PRESSURE VESSESLS

Kai Lü, Jinya Katsuyama, Yinsheng Li, Yuhei Miyamoto et autres

Probabilistic fracture mechanics (PFM) is considered as a promising methodology in the integrity assessment of structural components in a nuclear power plant since it can rationally represent the influence parameters in their inherent probabilistic distributions without over-conservativeness. In Japan, a PFM analysis …

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Verification of Probabilistic Fracture Mechanics Analysis Code PASCAL

Yinsheng Li, Genshichiro Katsumata, Koichi Masaki, Shotaro Hayashi et autres

Probabilistic fracture mechanics (PFM) has been recognized as a promising methodology in structural integrity assessments of aged pressure boundary components of nuclear power plants because it can rationally represent the influencing parameters in their inherent probabilistic distributions without over conservativeness. In Japan, …

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Activities of working group on verification of PASCAL. Fiscal year 2015

Yinsheng Li, Shotaro Hayashi, Yu Itabashi, Masaki Nagai et autres

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Evaluation of SCC Crack Growth Rate in BWR Water Based on Elastic-Plastic Fracture Mechanics Parameters

Masahiro Takanashi, Yu Itabashi, Takashi Hirano

This paper presents an applicability of elastic-plastic fracture mechanics parameters for evaluating a crack growth rate of stress corrosion cracking (SCC). Currently linear fracture mechanical approaches have been applied for the SCC crack growth evaluation, even though some cracks due to SCC …

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Dislocation-based interpretation on the effect of the loading frequency on the fatigue properties of JIS S15C low carbon steel

Benjamin Guennec, Akira UENO, Tatsuo Sakai, Masahiro Takanashi et autres

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Effect of the loading frequency on fatigue properties of JIS S15C low carbon steel and some discussions based on micro-plasticity behavior

Benjamin Guennec, Akira UENO, Tatsuo Sakai, Masahiro Takanashi et autres

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Study on Validity of Stress Intensity Factor in CT Specimen for Materials With Low Yield Stress

Masahiro Takanashi, Yu Itabashi, Takashi Hirano

This paper discusses the validity of a stress intensity factor K for compact tension (CT) specimens of stainless and low-alloy steels by computing J-integral values. In fracture mechanics testing, specimen configurations and loading conditions are strictly regulated to meet the small-scale yielding …

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Fracture Mechanics Study on Stress Corrosion Cracking Behavior under Corrosive Environment

Tomoyuki Fujii, Keiichiro TOHGO, Naohiro Ishizuka, Yoshinobu SHIMAMURA et autres

This paper deals with applicability of non-linear fracture mechanics to crack growth by stress corrosion cracking (SCC) under large-scale yielding and in a plastically deformed area. Crack growth test by compact tension specimen is carried out to evaluate crack growth rate under …

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