| Project/Area Number |
24K22929
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0301:Mechanics of materials, production engineering, design engineering, fluid engineering, thermal engineering, mechanical dynamics, robotics, aerospace engineering, marine and maritime engineering, and related fields
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| Research Institution | Osaka University |
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Principal Investigator |
周 紅昌 大阪大学, 接合科学研究所, 助教 (30996905)
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| Project Period (FY) |
2024-07-31 – 2026-03-31
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| Project Status |
Granted (Fiscal Year 2024)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2025: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2024: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Fatigue / Micro-crack / Microstructure / Multiscale model / Multiple cracks |
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| Outline of Research at the Start |
Multiple cracks could accelerate crack growth and reduce fatigue lives compared to a single crack. However, there are no effective methods to predict the entire fatigue process considering multiple cracks. We aims to propose a strategy to predict fatigue behaviours considering multiple crack initiation and coalescence based on multiscale simulations. The mechanisms of multiple microcracks transiting into a single macroscopic crack will be elucidated. It will provide a new perspective for evaluating the fatigue strength of steel to ensure the long-term safety of engineering structures.
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