Zhaoyang Li, Zhongliang Li, Nan Nan, Teng Liu, Chenming Yang, Xinjun Wan, Yiheng Zhang, Xiangzhao Wang. Measurement Method of Keyhole Depth in Laser Welding Based on Polarization Sensitive OCT[J]. Chinese Journal of Lasers, 2023, 50(20): 2002106
- Chinese Journal of Lasers
- Vol. 50, Issue 20, 2002106 (2023)
Fig. 1. Reflection of OCT detection beam in keyhole
Fig. 2. B-scan images of OCT scanning weld
Fig. 3. Additional phase differences between s- and p-wave of reflected light from different metal surfaces versus angle of incidence
Fig. 4. Schematics of keyhole simulation and simulation results. (a1)(a2) Light tracing for keyhole depth detection by PS-OCT; (b1)(b2) optical path difference of sub-rays before processing; (c1)(c2) optical path difference of sub-rays after processing
Fig. 5. Schematic of PS-OCT system
Fig. 6. Keyhole sample and measured image. (a) Schematic of keyhole sample; (b) B-scan image of keyhole
Fig. 7. M-scan images and additional phase difference images under different incidence conditions. (a) Vertical incidence on sidewall near bottom; (b) incidence on sidewall at 30° angle; (c) vertical incidence at bottom of keyhole
Fig. 8. B-scan images and additional phase difference images at different positions of keyhole. (a) Sidewalls near bottom; (b) edge position of keyhole bottom; (c) middle position of keyhole bottom
| ||||||||||||||||||||||||||||||||
Table 1. Parameters used in simulation
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20