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A stereo vision method for tracking particle flow on the weld pool surface
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Zhao, C. X., Richardson, I. M., Kenjeres, S., Kleijn, C. R. and Saldi, Z. (2009) A stereo vision method for tracking particle flow on the weld pool surface. Journal of Applied Physics, 105 (12). 123104. doi:10.1063/1.3143789 ISSN 0021-8979.
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Official URL: http://dx.doi.org/10.1063/1.3143789
Abstract
The oscillation of a weld pool surface makes the fluid flow motion quite complex. Two-dimensional results cannot reflect enough information to quantitatively describe the fluid flow in the weld pool; however, there are few direct three-dimensional results available. In this paper, we describe a three-dimensional reconstruction method to measure weld pool surface features based on a single high-speed camera. A stereo adapter was added in front of the high-speed camera lens to obtain two images in the same frame from different view points at the same time. According to machine vision theory, three-dimensional parameters can be reconstructed based on two such images. In this work, three-dimensional velocity fields have been obtained using this method. Based on the calibration technique employed, the associated error is estimated to be less than 11.4%. Quantitative experimental results are useful for understanding the flow pattern, and possibly for controlling the flow of liquid in the weld pool.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Journal or Publication Title: | Journal of Applied Physics | ||||
Publisher: | American Institute of Physics | ||||
ISSN: | 0021-8979 | ||||
Official Date: | 17 June 2009 | ||||
Dates: |
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Volume: | 105 | ||||
Number: | 12 | ||||
Article Number: | 123104 | ||||
DOI: | 10.1063/1.3143789 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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