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Research on the Controlling Parameters of Creep-Thermal Fatigue Crack
Joint Authors
Zhu, Xiang-jun
Wang, Shi-jie
Yan, Ming
Source
Advances in Mechanical Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-02-26
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The opening process of creep-thermal fatigue crack (CTFC) is studied by finite element method, considering the bilinear kinematic hardening and creep characteristic of the material.
The crack is closed under the compressive thermal stress during the heating and insulating processes.
The tensile stress during the late cooling process, which is normal to the crack face, makes the crack gradually open.
At this time, the temperature of material around the crack has become lower than the creep temperature; therefore, the creep fracture mechanism parameter C* is not applicable.
The CTFC is quite shallow, and comparatively the plastic zone is rather large; thus, the method of stress intensity factor is restricted.
A modified J-integral method is put forward according to the stress analysis of CTFC, which has been proved to be path independent and valid.
The method is used for not only the CTFC but also any unloading crack or the crack in the residual compressive plastic strain field.
Experimental results show that the modified J-integral can be used as the controlling parameter of the CTFC propagation.
American Psychological Association (APA)
Yan, Ming& Zhu, Xiang-jun& Wang, Shi-jie. 2013. Research on the Controlling Parameters of Creep-Thermal Fatigue Crack. Advances in Mechanical Engineering،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-469545
Modern Language Association (MLA)
Yan, Ming…[et al.]. Research on the Controlling Parameters of Creep-Thermal Fatigue Crack. Advances in Mechanical Engineering No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-469545
American Medical Association (AMA)
Yan, Ming& Zhu, Xiang-jun& Wang, Shi-jie. Research on the Controlling Parameters of Creep-Thermal Fatigue Crack. Advances in Mechanical Engineering. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-469545
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-469545