| DOI | Resolve DOI: https://doi.org/10.1115/GT2020-15702 |
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| Author | Search for: Zhang, Zhong1; Search for: Wu, Xijia1 |
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| Affiliation | - National Research Council of Canada. Aerospace
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| Format | Text, Article |
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| Conference | ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition, September 21 - 25, 2020, Virtual, Online |
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| Subject | low cycle fatigue; life prediction; cyclic hardening; crack nucleation; hardening; low cycle fatigue; nucleation (physics) |
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| Abstract | A general fatigue life equation is derived by modifying the Tanaka-Mura-Wu dislocation pile-up model for variable strain-amplitude fatigue processes, where the fatigue crack nucleation life is expressed in terms of the root mean square of plastic strain range. Low-cycle fatigue tests were conducted on an austenitic stainless steel. at 400°C and 600°C, the material exhibits continuously cyclic-hardening behaviour. The root mean square of plastic strain ranges is evaluated from the experimental data for each test condition at strain rates ranging from 0.0002/s to 0.02/s. The variable-amplitude Tanaka-Mura-Wu model is found to be in good agreement with the LCF data, which effectively proves Miner’s rule on the stored plastic strain energy basis. |
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| Publication date | 2020-09-21 |
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| Publisher | American Society of Mechanical Engineers |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | e9a73e21-0a40-44e6-97e5-d5bc2f08818f |
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| Record created | 2022-05-10 |
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| Record modified | 2022-05-10 |
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