[1] Lin J A. The basic study on laser welding technology and performance of CRH austenitic stainless steel[D]. Beijing: Beijing Jiaotong University, 15-26(2012).

[2] Li Y J, Wu N, Puchkov P U[J]. Application of advanced welding technology in aviation and aerospace industry Aeronautical Manufacturing Technology, 2010, 43-47.

[3] Huang Z Y. Study on the welding technology for the stainless steel roof structure of the urban railway carriage[D]. Changchun: Jilin University, 12-28(2005).

[4] Duan Z Z, Zhang X H, Gu X P. The development trend and process status of welding manufacturing on rail vehicle[J]. Welding Technology, 40, 1-5(2011).

[5] Han X H, Chen J, Kan Y et al. Heat source model for non-penetration laser lap welding of stainless steel sheets[J]. Chinese Journal of Lasers, 44, 0502002(2017).

[6] Peng J, Li L Q, Zhang R Z et al. Study on aluminum alloy laser welding with pre-melted liquid filler by arc[J]. Laser & Optoelectronics Progress, 54, 061404(2017).

[7] Huang Y J, Gao X D, Lin S D. Influences of laser welding parameters on mechanical properties of polymethyl methacrylate and stainless-steel joints[J]. Chinese Journal of Lasers, 44, 1202006(2017).

[8] Zhang W W, Cong S, Luo S B et al. Effects of energy density and shielding medium on performance of laser beam welding (LBW) joints on SAF2205 duplex stainless steel[J]. JOM, 70, 1554-1559(2018). http://link.springer.com/article/10.1007/s11837-018-2872-6

[9] Bai P F, Wang Z J, Hu S S et al. Sensing of the weld penetration at the beginning of pulsed gas metal arc welding[J]. Journal of Manufacturing Processes, 28, 343-350(2017). http://www.sciencedirect.com/science/article/pii/S1526612517301664

[10] Liang H, Kan Y, Jiang Y L et al. Mechanical properties of laser overlap welded joints of stainless steel sheets[J]. Chinese Journal of Lasers, 45, 0602001(2018).

[11] Turichin G, Tsibulskiy I, Kuznetsov M et al. Influence of the gap width on the geometry of the welded joint in hybrid laser-arc welding[J]. Physics Procedia, 78, 14-23(2015). http://www.sciencedirect.com/science/article/pii/S1875389215015035

[12] Tzeng Y F. Effects of operating parameters on surface quality for the pulsed laser welding of zinc-coated steel[J]. Journal of Materials Processing Technology, 100, 163-170(2000). http://www.sciencedirect.com/science/article/pii/S0924013699004707

[13] Bhargava P, Paul C P, Mundra G et al. Study on weld bead surface profile and angular distortion in 6 mm thick butt weld joints of SS304 using fiber laser[J]. Optics and Lasers in Engineering, 53, 152-157(2014). http://www.sciencedirect.com/science/article/pii/S0143816613002765

[14] Gao S Y, Yang K Z, Liu S T et al. Surface defect detection of laser welding seam based on data fitting technology[J]. Modern Electronics Technique, 34, 188-190, 198(2011).

[15] Liu E Z, Yao C W, Xie Y L et al. Deformation mechanism of SUS304 austenitic stainless steel at weldless side in partial penetration laser welding[J]. Chinese Journal of Lasers, 46, 0402004(2019).

[16] Huang W, Kovacevic R. Development of a real-time laser-based machine vision system to monitor and control welding processes[J]. The International Journal of Advanced Manufacturing Technology, 63, 235-248(2012). http://link.springer.com/article/10.1007/s00170-012-3902-0

[17] Sun X W, Yin X Q, Wang J C et al. Analysis of the buckling deformation of thin plate welding by using three dimensional optical measurement technique[J]. Transactions of the China Welding Institution, 34, 109-112(2013).

[18] Amann M C, Bosch T M, Lescure M et al. Laser ranging: a critical review of unusual techniques for distance measurement[J]. Optical Engineering, 40, 10-19(2001). http://spie.org/x648.html?product_id=404025

[19] Liu W, Han X D, Ai H. Application of laser triangulation in displacement measurement[J]. Optics and Precision Engineering, 12, 104-107(2004).

[20] Han Q Y, Xiao Q, Yue Y. Study of space discrete point's piecewise linear fitting on least square method[J]. Industrial Instrumentation & Automation, 4, 107-109(2012).