SA-01-3(088) Creep-Fatigue Crack Growth Evaluation of Low Alloy Steel under Displacement-Controlled Conditions(Life Assessment of Thermal Power Plant 1)
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概要
- 論文の詳細を見る
In the remaining life assessment of high-temperature structural components after long-term service, a practical evaluation of crack growth lifetime using nonlinear fracture mechanics is needed. In this study, creep-fatigue crack growth behavior under displacement-controlled conditions is examined using CT specimens of 2 1/4Cr-lMo steel. The J-integral estimation method and the crack growth prediction method using the fully plastic solution are also examined. Creep-fatigue crack growth under displacement hold can be separated into fatigue crack growth in the cyclic portion and creep crack growth in the holding portion. These two mechanisms are competitive with each other, and the crack growth behavior is determined by the dominant one of fatigue and creep. The J-integral approach using the fully plastic solution is introduced for predicting low cycle fatigue crack growth and creep-fatigue crack growth with relaxation. The propriety of this solution is verified by comparing the prediction with experiments of the slope-line-control method.
- 一般社団法人日本機械学会の論文
- 2001-06-03
著者
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Yoshino Shin
Energy And Environment R & D Center Tokyo Electric Power Co. Inc.
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Fujita Masaaki
Nagasaki Shipyard And Machinery Works Mitsubishi Heavy Industries Ltd.
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IGARI Toshihide
Nagasaki Technical Institute, Mitsubishi Heavy Industries, Ltd.
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KINO Hironori
Department of Mechanical Engineering, University of East Asia
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TOKIYOSHI Takumi
Nagasaki Research and Development Center, Mitsubishi Heavy Industries, Ltd.
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KAWASHIMA Fumiko
Nagasaki Research and Development Center, Mitsubishi Heavy Industries, Ltd.
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TERAMAE Tetsuo
Energy and Environment R & D Center, Tokyo Electric Power Co., Inc.
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KINO Hironori
Nagasaki R & D Center, Mitsubishi Heavy Industries, Ltd.
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FUJITA Masaaki
Power Systems Engineering Center, Mitsubishi Heavy Industries, Ltd.
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Kino Hironori
Department Of Mechanical Engineering University Of East Asia
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Teramae Tetsuo
Energy And Environment R & D Center Tokyo Electric Power Co. Inc.
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Igari Toshihide
Nagasaki R&d Center Mitsubishi Heavy Industries Ltd.
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Tokiyoshi Takumi
Nagasaki R&d Center Mitsubishi Heavy Industries Ltd.
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Kawashima Fumiko
Nagasaki R&d Center Mitsubishi Heavy Industries Ltd.
関連論文
- Experimental Study of the Prediction of Macroscopic Creep Behavior of Perforated Plates
- Creep-Fatigue Crack Growth Behavior of Low Alloy Steel under Displacement-Controlled Conditions
- SA-01-3(088) Creep-Fatigue Crack Growth Evaluation of Low Alloy Steel under Displacement-Controlled Conditions(Life Assessment of Thermal Power Plant 1)
- Micro-Macro Combined Simulation of the Damage Progress in Low-Alloy Steel Welds Subject to Type IV Creep Failure(Advanced Technology of Experimental Mechanics)
- OS12(3)-12(OS12W0391) Advanced Creep Damage Analysis of Low-Alloy Steel Welds Considering the Microscopic Damage Progress
- Inelastic Analysis and Thermal Fatigue Life Prediction of a Perforated Cylinder Based on the Effective Stress Concept
- Creep Damage Simulation Test and Creep Life Assessment System for Elevated Temperature Plant Components