Thermal fatigue on pistons induced by shaped high power laser. Part I: Experimental study of transient temperature field and temperature oscillation

doi:10.1016/j.ijheatmasstransfer.2007.04.035

IMECH-IR > 力学所知识产出(1956-2008)

	Thermal fatigue on pistons induced by shaped high power laser. Part I: Experimental study of transient temperature field and temperature oscillation
	Song HW(宋宏伟); Yu G(虞钢); Tan JS; Zhou L(周良); Yu XL; Song, HW (reprint author), Chinese Acad Sci, Inst Mech, Lab Laser Intelligent Mfg, Beijing 100080, Peoples R China.
发表期刊	International Journal of Heat and Mass Transfer
	2008
卷号	51 期号:3-4 页码:757-767
ISSN	0017-9310
摘要	Thermal fatigue behavior is one of the foremost considerations in the design and operation of diesel engines. It is found that thermal fatigue is closely related to the temperature field and temperature fluctuation in the structure. In this paper, spatially shaped high power laser was introduced to simulate thermal loadings on the piston. The incident Gaussian beam was transformed into concentric multi-circular beam of specific intensity distribution with the help of diffractive optical element (DOE), and the transient temperature fields in the piston similar to those under working conditions could be achieved by setting up appropriate loading cycles. Simulation tests for typical thermal loading conditions, i.e., thermal high cycle fatigue (HCF) and thermal shock (or thermal low cycle fatigue, LCF) were carried out. Several important parameters that affect the transient temperature fields and/or temperature oscillations, including controlling mode, intensity distribution of shaped laser, laser power, temporal profile of laser pulse, heating time and cooling time in one thermal cycle, etc., were investigated and discussed. The results show that as a novel method, the shaped high power laser can simulate thermal loadings on pistons efficiently, and it is helpful in the study of thermal fatigue behavior in pistons. (C) 2007 Elsevier Ltd. All rights reserved.
关键词	Thermal Fatigue Temperature Field Shaped High Power Laser Hcf Thermal Shock Barrier Coatings Yag-laser Behavior
DOI	10.1016/j.ijheatmasstransfer.2007.04.035
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000253661600033
关键词[WOS]	BARRIER COATINGS ; YAG-LASER ; BEHAVIOR
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Engineering, Mechanical ; Mechanics
引用统计	被引频次：17[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/311007/26120
专题	力学所知识产出(1956-2008)
通讯作者	Song, HW (reprint author), Chinese Acad Sci, Inst Mech, Lab Laser Intelligent Mfg, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Song HW,Yu G,Tan JS,et al. Thermal fatigue on pistons induced by shaped high power laser. Part I: Experimental study of transient temperature field and temperature oscillation[J]. International Journal of Heat and Mass Transfer,2008,51,3-4,:757-767.
APA	Song HW,Yu G,Tan JS,Zhou L,Yu XL,&Song, HW .(2008).Thermal fatigue on pistons induced by shaped high power laser. Part I: Experimental study of transient temperature field and temperature oscillation.International Journal of Heat and Mass Transfer,51(3-4),757-767.
MLA	Song HW,et al."Thermal fatigue on pistons induced by shaped high power laser. Part I: Experimental study of transient temperature field and temperature oscillation".International Journal of Heat and Mass Transfer 51.3-4(2008):757-767.

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