Knowledge Management System of Institue of Mechanics, CAS
| 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.
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| Source Publication | International Journal of Heat and Mass Transfer
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| 2008 | |
| Volume | 51Issue:3-4Pages:757-767 |
| ISSN | 0017-9310 |
| Abstract | 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. |
| Keyword | 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 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000253661600033 |
| WOS Keyword | BARRIER COATINGS ; YAG-LASER ; BEHAVIOR |
| WOS Research Area | Thermodynamics ; Engineering ; Mechanics |
| WOS Subject | Thermodynamics ; Engineering, Mechanical ; Mechanics |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/26120 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Song, HW (reprint author), Chinese Acad Sci, Inst Mech, Lab Laser Intelligent Mfg, Beijing 100080, Peoples R China. |
| Recommended Citation 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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