首页|Welding depth measurement for different mode lasers using optical coherence tomography

Welding depth measurement for different mode lasers using optical coherence tomography

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Optical coherence tomography[OCT]allows a direct and precise measurement of laser welding depth by coaxially meas-uring the keyhole depth and can be used for process monitoring and control.When OCT measurement was taken during single-beam laser welding,the keyhole instability of aluminum welding resulted in highly scattered OCT data and compli-cated the welding depth extraction methods.As a combination of an inner core beam and an outer ring beam,a novel adjustable ring mode[ARM]laser for producing a stable keyhole was applied to the OCT measurement.Different ARM laser power arrangements were conducted on aluminum and copper.The results indicated that the ring beam greatly improved the stability of the core beam-induced keyhole,and smooth welding depth can be extracted from the concen-trated OCT data.

optical coherence tomographyadjustable ring mode laserlaser weldingwelding depth

谢冠明、王三宏、张跃强、李由、胡彪、傅愉、于起峰

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Institute of Intelligent Optical Measurement and Detection,Shenzhen University,Shenzhen 518060,China

College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China

Shenzhen Sincevision Technology Co.,Ltd.,Shenzhen 518055,China

National Key Laboratory of Human Factors Engineering,China Astronaut Research and Training Center,Beijing 100094,China

College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China

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National Natural Science Foundation of ChinaChina Postdoctoral Science FoundationNational Key Research and Development Program of China

120022152022T1504372019YFC1511102

2024

10.3788/COL202422.011203

中国光学快报(英文版)
中国光学学会 中国科学院上海光学精密机械研究所

中国光学快报(英文版)

CSTPCD
影响因子：1.305
ISSN：1671-7694
年,卷(期)：2024.22(1)
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