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Thermal Fatigue Behaviour of Cast Iron Induced by Pulse Laser Heating: Numerical Simulation and Experimental Studies
Liu H(刘昊); Chen PJ(陈培君); Hao JB; Yang HF; He XL(何秀丽); Yu G(虞钢)
2018
发表期刊LASERS IN ENGINEERING
卷号41期号:1-3页码:111-128
ISSN0898-1507
摘要Thermal fatigue is one of the key damage mechanisms in components suffering high temperature cycles. To shorten the duration of a thermal fatigue test and improve its reliability, apparatus was designed using a laser as the heat source, considering the good controllability and high energy density of a laser in both time and space. The temperature and stress fields induced by a laser under high temperature cycling were investigated by a coupled thermo-mechanical finite element method (FEM) model. Results show that, under the cyclic action of the laser, pulse compressive stresses were produced and were non-uniformly distributed on the cast iron surface, providing essential conditions for cracking. After 1000 thermal cycles. network cracks occurred on the surface area irradiated by the laser. It is believed that the cracks initiated from holes formed by the spalling of graphite, and propagated to connect with each other under the effects of the pulsed compressive stresses.
关键词Nd:YAG laser cast iron cracking thermal fatigue temperature field numerical model finite element method (FEM)
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收录类别SCI ; EI
语种英语
WOS记录号WOS:000445401900007
关键词[WOS]BIOMIMETIC NONSMOOTH SURFACE ; HIGH-POWER LASER ; TOOL STEEL ; DIE STEEL ; RESISTANCE ; TEMPERATURE ; ALLOYS
WOS研究方向Materials Science, Multidisciplinary ; Optics
WOS类目Materials Science ; Optics
项目资助者Fundamental Research Funds for the Central Universities [2017QNA18] ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
论文分区Q4
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77955
专题先进制造工艺力学重点实验室
作者单位1.[Liu, H.
2.Hao, J-B.
3.Yang, H-F.] China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Jiangsu, Peoples R China
4.[Liu, H.] China Univ Min & Technol, Jiangsu Key Lab Mine Mech & Elect Equipment, Xuzhou 221116, Jiangsu, Peoples R China
5.[Chen, P-J.] China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China
6.[He, X-L.
7.Yu, G.] Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing, Peoples R China
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Liu H,Chen PJ,Hao JB,et al. Thermal Fatigue Behaviour of Cast Iron Induced by Pulse Laser Heating: Numerical Simulation and Experimental Studies[J]. LASERS IN ENGINEERING,2018,41(1-3):111-128.
APA 刘昊,陈培君,Hao JB,Yang HF,何秀丽,&虞钢.(2018).Thermal Fatigue Behaviour of Cast Iron Induced by Pulse Laser Heating: Numerical Simulation and Experimental Studies.LASERS IN ENGINEERING,41(1-3),111-128.
MLA 刘昊,et al."Thermal Fatigue Behaviour of Cast Iron Induced by Pulse Laser Heating: Numerical Simulation and Experimental Studies".LASERS IN ENGINEERING 41.1-3(2018):111-128.
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