Paper Title:
Measurement on Thermal Radiation of Standard High-Temperature Blackbody Furnace in Visible Spectrum Range

Based Plank’s radiation law, thermal radiation intensity depends on radiation wavelength and material temperature. As the increase of material temperature, thermal radiation wavelength will decrease from infrared waves, next to visible light, last to ultraviolet light. In order to research the spectral distribution of molten pool at different temperature in laser fabricating, thermal radiation of standard BF1400 blackbody furnace in National Institute of Metrology of China was measured by CCD technique. Its high-temperature cavity radiators glow which was dim red at 600 oC, bright red at 800 oC, yellowish red at 1000 oC, bright yellow at 1200 oC. The thermal radiation in visible spectrum range could be acquired by CCD, which was translated into grey data of red, green and blue radiation intensity. It was shown that grey gain at red, green and blue wavelength was different greatly as increase of blackbody temperature, extremely large at red wavelength, little at blue and green wavelength. When thermal radiation of molten metal pool at red, green and blue wavelength in laser fabricating was acquired to analyze the relation between spectrum and temperature, the green and blue wavelength will be good choose for its colorimetry temperature analysis.

Materials Science Forum (Volumes 663-665)
Edited by
Yuan Ming Huang
J. B. Lei, J. Chen, Z. Wang, Y. S. Wang, "Measurement on Thermal Radiation of Standard High-Temperature Blackbody Furnace in Visible Spectrum Range", Materials Science Forum, Vols. 663-665, pp. 223-226, Nov. 2010
Online since
November 2010
US$ 28,-
Authors: Shu Ming Wang, Ying Chun Zhang, Feng Hua Kuang, Qing Zhi Yan, Chang Chun Ge, Long Hao Qi
Abstract:In this article we present the testing, evaluation of infrared radiation properties of polycrystalline materials especially as...
Authors: Li Yong Zhang, Yu Kun Liang
Tooling Testing and Evaluation of Materials
Abstract:This paper introduces an approach of novel principle to measure the directional emissivity of material surfaces direct. The value of the...
Authors: Li Hua Yuan, Guan Hua Wu, Ming Li
Chapter 3: Mechanical, Electronic and Material Engineering
Abstract:Colorimetry is commonly used to measure the surface temperature as true one when the surface emissivity is constant. That is, the target is...
Authors: Wen Chao Zhang, Hong Zheng Peng, Chun Long Su
Chapter 6: Materials Forming
Abstract:Bridgewire of a thin resistive wire widely used in electric explosive devices (EED) as a transducer of electronic energy to thermal energy...
Authors: Hua Jia, Xiao Yang Guo, Ying Chao Dai, Jian Shuai Wu
Chapter 3: Measurement and Instrumentation, Monitoring, Testing, Detection, Recognition and Identification Technologies
Abstract:In order to overcome the shortcomings of the traditional temperature measurement method which can only acquire the single point temperature...