Creep-fatigue Life Design Methods in High-temperature Structures: From Materials to Components

被引：0
|
作者：
Wang R. [1 ]
Liao D. [2 ]
Zhang X. [1 ]
Zhu S. [2 ]
Tu S. [1 ]
Guo S. [1 ]
机构：
[1] Key Laboratory of Pressure Systems and Safety, Ministry of Education, East China University of Science and Technology, Shanghai
[2] Center for System Reliability & Safety, University of Electronic Science and Technology of China, Chengdu
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2021年 / 57卷 / 16期
关键词：
Creep-fatigue; Damage assessment; Life design; Multiaxial stress; Reliability method;
D O I：
10.3901/JME.2021.16.066
中图分类号：
学科分类号：
摘要：
Structural components used in many fields operate under harsh environment of high temperatures and cyclic loadings, the service process of which is always associated with serious creep-fatigue interactions. With the urgent demands of long life and high reliability of high-temperature structures, the creep-fatigue life design method has been paid more and more attentions from both engineering and academics. The creep-fatigue interaction is firstly introduced, and microscopic damage mechanisms under complex creep-fatigue loading waveforms are subsequently summarized. At the material level, creep-fatigue life prediction models based on different theoretical methods are reviewed. At the structural level, the effect of multiaxial stress on creep and fatigue damage is clarified and the life design method based on creep-fatigue interaction diagram is elaborated. Moreover, the creep-fatigue reliability analysis method ranging from creep-fatigue crack initiation to propagation is reviewed. Finally, further directions on creep-fatigue study are explored and concluded. © 2021 Journal of Mechanical Engineering.
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页码：66 / 86and105
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