A fatigue limit evaluation method based on plastic strain incremental energy dissipation theory

doi:10.1016/j.engfracmech.2023.109173

IMECH-IR > 非线性力学国家重点实验室

	A fatigue limit evaluation method based on plastic strain incremental energy dissipation theory
	Zu, Ruili ; Zhu, Yingbin 1; Huang XF(黄先富); Huang, Yao ; Zhou, Yizhou 3; Zhao, Jiaye 4; Liu, Zhanwei
发表期刊	ENGINEERING FRACTURE MECHANICS
	2023-04-14
卷号	282 页码:109173
ISSN	0013-7944
摘要	Metallic materials frequently undergo fatigue failure during long term service. Therefore, the study of fatigue performance detection methods with high precision and wide application ranges is crucial to reduce fatigue failures and accidents of materials and structures. In this study, a plastic strain incremental energy dissipation theory (PSIEDT) is established, and a general expression for fatigue limit is derived with the starting point of the plastic strain increment. Taking 42CrMo4 steel as an example, and its temperature and deformation fields are obtained synchronously using infrared thermal imaging and digital image correlation. Its fatigue limit is evaluated using the energy dissipation theory based on the plastic strain increment. The results show that the relative error between the fatigue limit measurement accuracies of the developed method and the method proposed by Luong is 1.64 %. The relative error of the fatigue limit obtained for the local damage region is only 0.18 %, which has a high measurement accuracy. At the microscopic level, the onset of plastic strain corresponds to a change in the microstructure of the material from reversible deformation (viscoelastic) to permanent deformation (plasticity). Therefore, the strain measurements have higher sensitivity than the temperature measurements. Considering the limited heat release of many materials, the new method has a wide application range, can rapidly obtain material fatigue properties, and has good engineering application prospects.
关键词	Fatigue limit Plastic strain incremental energy dissipation theory Infrared thermal imaging Digital image correlation
DOI	10.1016/j.engfracmech.2023.109173
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000951493300001
WOS研究方向	Mechanics
WOS类目	Mechanics
项目资助者	National Natural Science Foundation of China [11972084] ; National Science and Technology Major Project [2017 VI 0003 0073]
论文分区	一类
力学所作者排名	3
RpAuthor	Liu, ZW (corresponding author), Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China.
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/91801
专题	非线性力学国家重点实验室
作者单位	1.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 5.Inst Flexible Elect Technol THU, Jiaxing 314006, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Zu, Ruili,Zhu, Yingbin,Huang XF,et al. A fatigue limit evaluation method based on plastic strain incremental energy dissipation theory[J]. ENGINEERING FRACTURE MECHANICS,2023,282:109173.
APA	Zu, Ruili.,Zhu, Yingbin.,黄先富.,Huang, Yao.,Zhou, Yizhou.,...&Liu, Zhanwei.(2023).A fatigue limit evaluation method based on plastic strain incremental energy dissipation theory.ENGINEERING FRACTURE MECHANICS,282,109173.
MLA	Zu, Ruili,et al."A fatigue limit evaluation method based on plastic strain incremental energy dissipation theory".ENGINEERING FRACTURE MECHANICS 282(2023):109173.

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