Determination of abnormal elements of linear defects of automobile body sheets by laser induced breakdown spectroscopy-original position statistic distribution analysis technique
QU Hua-yang1, HU Jing-yu1, ZHAO Lei1,2, HAN Peng-cheng1,2,SHEN Xue-jing1,2, YUAN Liang-jing1,2, CHEN Ji-wen1,2
1. Central Iron & Steel Research Institute, Beijing 100081, China; 2. NCS Testing Technology Co., Ltd., Beijing 100081, China
Abstract： Laser-induced breakdown spectroscopy original position statistic distribution analysis technique (LIBSOPA) was used to obtain the element distribution of linear defects of automotive body sheets. The element content of defective and non-defective part was obtained by integrating laser spectroscopy quantitative analysis, in-depth scan and one-dimensional line scanning. The distribution analysis data of all elements of vertical linear defective direction was obtained by comparing the results with the actual position of sample. The data obtained by LIBSOPA conformed to the analysis results of other methods (scanning electron microscopy and glow discharge optical emission spectrometry (GDOES)). The method was featured with small excitation spot, microscopic damage analysis and in situ analysis advantages. The method has outstanding advantages for analyzing the linear defects covered by analysis coating in particular. It can be used to screen the abnormal elements of linear defects on the automotive sheet surface in order to provide new criteria basis for improving production process.
屈华阳， 胡净宇，赵 雷，韩鹏程，沈学静，袁良经，陈吉文. 激光光谱原位统计分布分析技术测定汽车板表面线状缺陷中异常元素[J]. 冶金分析, 2013, 33(1): 1-6.
QU Hua-yang, HU Jing-yu, ZHAO Lei, HAN Peng-cheng,SHEN Xue-jing, YUAN Liang-jing, CHEN Ji-wen. Determination of abnormal elements of linear defects of automobile body sheets by laser induced breakdown spectroscopy-original position statistic distribution analysis technique. , 2013, 33(1): 1-6.
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