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Proceedings Paper

Study on CCD measurement of temperature field in laser molten pool
Author(s): Jian-bo Lei; Xi-chen Yang; Yun-shan Wang; Hui-shan Li
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Paper Abstract

The quality of laser remanufacturing depends on temperature field distribution in laser molten pool. In this paper, two-dimensional temperature field model and CCD measurement of temperature field were developed. According to radiant transfer function, bright of light signal of temperature field grabbed by CCD was transformed to spectral radiant signal. A new system model for CCD measurement of temperature filed was proposed. It concluded optical system, CCD camera, image plate, orientating laser, special image software and computer. Thermal image signal received by CCD is transformed to digital signal by image plate. After processing digital image signal by computer, Temperature field distribution can be obtained by thermal image displaying. It was proved that CCD Measurement of molten pool temperature field was available. Automatic control of laser remanufacturing processing could be achieved by feedback control of thermal radiant signal.

Paper Details

Date Published: 13 January 2005
PDF: 11 pages
Proc. SPIE 5629, Lasers in Material Processing and Manufacturing II, (13 January 2005); doi: 10.1117/12.579792
Show Author Affiliations
Jian-bo Lei, Tianjin Polytechnic Univ. (China)
Xi-chen Yang, Tianjin Polytechnic Univ. (China)
Yun-shan Wang, Tianjin Polytechnic Univ. (China)
Hui-shan Li, Tianjin Polytechnic Univ. (China)

Published in SPIE Proceedings Vol. 5629:
Lasers in Material Processing and Manufacturing II
ShuShen Deng; Akira Matsunawa; Y. Lawrence Yao; Minlin Zhong, Editor(s)

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