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《Chinese Journal of Lasers》 2008-11
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Data Process Method for Measurement of Plasma Plume Temperature Field in Deep Penetration Laser Welding

Chen Genyu Zhao Zhi Zhang Yi Zhang Jun(State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha,Hunan 410082,China)  
The temperature field of laser-induced plasma in laser welding is hard to be obtained by the spectral analysis method.By using fast Fourier transform(FFT) and Hankel inversion algorithms,a data processing method based on Abel inversion for measuring temperature distribution of plasma is studied.Meanwhile the precision in the process of the dada is analyzed.The standard error e was about 3.23×10-2 at the number of dispersed points N of 41.The results show that the data process method can be very useful in the observation of the temperature filed of laser-induced plasma by using a multi-channel spectral analyzer.The temperature of plasma plume in the center area of laser beam appeared to be higher than the area near the laser beam.
【Fund】: 国家863重点项目(2007AA042006);; 国家自然科学基金(50575070);; 教育部博士点基金新教师项目(20070532003)资助课题
【CateGory Index】: TG456.7
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Chinese Journal Full-text Database 2 Hits
1 JIANG Ping 1, CHEN Wu zhu 1, XIAHOU Li peng 1, ZHANG Xu dong 1, TIAN Zhi ling 2 1Department of Mechanical Engineering, Tsinghua University, Beijing 100084 2Central Iron and Steel Research Institute, Beijing 100081;Mechanism and Mathematical Model of the Laser-induced Plasma Current in Laser Welding[J];Chinese Journal of Lasers;2002-05
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1 ZHOU Zhan-rong,ZHAO Wei,ZHAO Yun-fang,SHEN Xiao-fang (Department of Physics,Second Artillery Engineering College,Xi'an 710025,China);Simulated calculation on the measurent of the distribution of the refractive index of the flow field using interferometry[J];Optical Technique;2008-S1
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Chinese Journal Full-text Database 3 Hits
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