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《Chinese Journal of Sensors and Actuators》 2006-05
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Transient Elastic Thermal Stress Analysis for Laser Machining Polymer Microchannels

XIANG Heng-fu, FU Jian-zhong, CHEN Zi-chen (Mechanical engineering Dept. Micro-system research and development center, Zhejiang University, Hangzhou 310027,China)  
Lasers are emerging as a valuable tool for direct-writing polymer micro channels. Unfortunately, the large, concentrated heat flux rates that allow the laser to efficiently ablation polymer also result in large localized thermal stresses in a small heat-affected zone. then thermal stresses can lead to micro-cracks, a decrease in strength and fatigue life, and possibly catastrophic failure. In order to predict where, when, and what stresses occur during laser grooving, a three-dimensional elastic stress model has been integrated into ablation solution. First, the solution predicts the temporal temperature fields and there erosion surface. Then, using the grooved geometry and temperature field, the elastic stress fields are calculated as they develop and decay during the laser ablation process. The results of the analysis show elastic thermal stresses develop over a thick layer below and parallel to the surface, which may be the cause of subsurface cracks.
【Fund】: 国家863高技术研究发展计划资助项目(2002AA421150)
【CateGory Index】: TN249
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Chinese Journal Full-text Database 1 Hits
1 SUN Yue,HUANG Hai-ming,GAO Suo-wen(Institute of Engineering Mechanics,Beijing Jiaotong University,Beijing 100044,China);Progress of Research in Laser Ablation Mechanism[J];Failure Analysis and Prevention;2008-02
Chinese Journal Full-text Database 2 Hits
1 ZHOU Ji-lie, CHENG Yao-dong (Institute of Modern Manufacture Engineering, Zhejiang University, Hangzhou 310027, China);Thermal stress analysis for structural ceramics during laser beam machining[J];Journal of Zhejiang University(Engineering Science);2004-09
2 XIANG Heng-fu,FU Jian-zhong,CHEN Zi-chen(Mechanical Engineering Department,Micro-system Research and Development Center,Zhejiang University, Hangzhou 310027,China);Transient ablation model for laser machining polymer microfluidic chip[J];Journal of Zhejiang University(Engineering Science);2005-12
Chinese Journal Full-text Database 10 Hits
1 LIU Xiao-qing ,HAO Wei-wei, GAO Wei-wei, ZHOU Yong-liang Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University,Xiamen Fujian 361005,China;Fabrication of Glass Microfluidic Chip by Laser Direct Writing and Wet Etching[J];Chinese Journal of Sensors and Actuators;2006-05
2 HUANG Qing-ju (Department of Physics, Maoming College, Maoming 525000, China);The Emission Studies on Ultraviolet Laser Ablation of Copper in Low Pressure[J];Chinese Journal of Luminescence;2006-06
3 LI Guo-dong, XIONG Xiang (State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China);Characteristics of TaC coatings ablated by low power laser[J];Materials Science and Engineering of Powder Metallargy;2005-03
4 ZHAO Ze-yu, HOU De-sheng, DONG Xiao-chun, DU Chun-lei (State Key Laboratory of Optical Technologies for Microfabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China);Research on Etching Properties of Polycarbonate by KrF Excimer Laser[J];Opto-electronic Engineering;2004-02
5 LIANG Wei YUAN Ping(Henan Entry-Exit Inspection and Quarantine Bureau,No.69 Jichanglu Zhengzhou 450003,P.R.China);Determination of Si,Fe,Ga,Cu and Mg in Exported Aluminium Ingot by SOLIS-500 Solids Sampling System[J];Chinese Journal of Spectroscopy Laboratory;2005-06
6 ZHANG Jian-bing,ZHAO Mei-hong,FANG Yan~*(Beijing key lab for nano-photonics and nano-structure,Physics Department,Capital Normal University,Beijing 100037,P.R.China);The Application in the Raman Spectroscopy of Ag Nanoparticles Produced by Two Different Wavelength Pulse Laser in Liquid[J];The Journal of Light Scattering;2006-03
7 LI Zun ying, LIU Fu yi Department of Physics, Linyi Teacher’s University, Linyi 276005, China;Electron Temperature of Al Plasma Estimated with Ar[J];Spectroscopy and Spectral Analysis;2004-02
8 Zhang Yunhai1 Wang Baoquan2 Lu Guohua1 Sun Gang1 Liu Mei1 Zhang Zhiguang1 Man Baoyuan1 1 College of Physics and Electronics, Shandong Normal University, Jinan 250014 2 Department of Physics, Dezhou University, Dezhou 253023;The Emission Spectrum of Plasma Induced by Pulsed Laser Ablation of HgCdTe[J];Acta Optica Sinica;2005-05
9 Chen Hongxin~1 Jia Tianqing~ 2 Huang Min~1 Zhao Fuli~1 Xu Ningsheng~1 Xu Zhizhan~21 State Key Laboratory of Optoelectonic Materials and Technologies, Zhongshan University, Guangzhou 5102752 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics,The Chinese Academy of Sciences, Shanghai 201800;Visible-Infrared Femtosecond Laser-Induced Optical Breakdown of 6H SiC[J];Acta Optica Sinica;2006-03
10 Ni Xiaochang,Wang Ching-yue Ultrafast laser lab, Tianjin University,Key Laboratory of Opto-electronic Information and Technical Science, Ministry of Education, Tianjin 300072;The Plasma Generation in the Temporal-spatial Ultrashort Laser Pulses Ablation on Dielectric Materials[J];Acta Photonica Sinica;2004-09
【Secondary Citations】
Chinese Journal Full-text Database 1 Hits
1 ZHOU Ji-lie, CHENG Yao-dong (Institute of Modern Manufacture Engineering, Zhejiang University, Hangzhou 310027, China);Thermal stress analysis for structural ceramics during laser beam machining[J];Journal of Zhejiang University(Engineering Science);2004-09
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