Study on CCD measurement of temperature field in laser molten pool

Jian-bo Lei; Xi-chen Yang; Yun-shan Wang; Hui-shan Li

doi:10.1117/12.579792

13 January 2005 Study on CCD measurement of temperature field in laser molten pool

Jian-bo Lei, Xi-chen Yang, Yun-shan Wang, Hui-shan Li

Proceedings Volume 5629, Lasers in Material Processing and Manufacturing II; (2005) https://doi.org/10.1117/12.579792
Event: Photonics Asia, 2004, Beijing, China

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.

Citation Download Citation

Jian-bo Lei, Xi-chen Yang, Yun-shan Wang, and Hui-shan Li "Study on CCD measurement of temperature field in laser molten pool", Proc. SPIE 5629, Lasers in Material Processing and Manufacturing II, (13 January 2005); https://doi.org/10.1117/12.579792

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