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Proceedings Paper

Vision detection of weld pool shape parameters and numerical simulation
Author(s): Youzhi Yuan; Nansheng Liu; Yanfeng Wang; Wei Luo; Xiaorui Liu
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Paper Abstract

An active vision sensing system which established by low power laser and common CCD is used to shoot GTAW welding pool images. Based on choose the appropriate LASER and filters, projected angle of laser and shoot angle of CCD, we avoid the disturbance of arc effectively and obtain clear images of the welding pool. The shape parameters of welding pool can obtain by demarcated and calculated. And then a three-dimentional numerical model of GTAW welding pool is established based on the theories of fluid dynamics and heat transfer. It considered the convection heat transfer of liquid metal and heat conduction of solid metal. And FLUENT software is used for simulate the GTAW welding pool. Extract the weld pool shape parameters and done comparative study with the vision detection of pool. This will be beneficial to avoid repeat experiments and improve work efficiency.

Paper Details

Date Published: 28 January 2009
PDF: 9 pages
Proc. SPIE 7156, 2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments, 71562Y (28 January 2009); doi: 10.1117/12.811503
Show Author Affiliations
Youzhi Yuan, Nanchang Univ. (China)
Nansheng Liu, Nanchang Univ. (China)
Yanfeng Wang, Nanchang Univ. (China)
Wei Luo, Nanchang Univ. (China)
Xiaorui Liu, Nanchang Univ. (China)


Published in SPIE Proceedings Vol. 7156:
2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments
Yunlong Sheng; Yongtian Wang; Lijiang Zeng, Editor(s)

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