Analysis on Application of Different Models for Fatigue Crack Propagation Rate of Metallic Materials

ZHANG Yajun; ZHANG Xinyao; ZHANG Yunhao

Volume 36 Issue 2

Apr. 2021

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Development and Application of Materials > 2021 > 36(2): 88-92.

ZHANG Yajun, ZHANG Xinyao, ZHANG Yunhao. Analysis on Application of Different Models for Fatigue Crack Propagation Rate of Metallic Materials[J]. Development and Application of Materials, 2021, 36(2): 88-92.

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Analysis on Application of Different Models for Fatigue Crack Propagation Rate of Metallic Materials

1. Luoyang Ship Material Research Institute, Luoyang 471023, China;
2. Henan Key Laboratory of Technology and Application of Structural Materials for Ships and Marine Equipments, Luoyang 471023, China;
3. National New Material Production and Application Demonstration Platform(Advanced Marine Engineering and High-tech Ship Materials), Luoyang 471023, China

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Received Date: May 20, 2020

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Abstract

Fatigue crack propagation rate of metallic materials is an important index of mechanical property, which is employed for assessment of safe service and prediction of fatigue life for metallic materials and their corresponding components with cracks in them. In this paper, based on different stages of fatigue crack propagation of metallic materials, closure effect, influence of stress ratio on fatigue crack propagation and so on, characteristics of different models for fatigue crack propagation rate were compared and analyzed, which would provide reference for selecting appropriate models in safety design and life prediction.
- metallic materials,
- fatigue crack propagation rate,
- models

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