A system based on a Fourier transform infrared spectrometer is developed to perform bidirectional reflectivity measurements on material surfaces, providing the ability to measure this property simultaneously for multiple infrared wavelengths. Calibration is based on a relative method that relates the system output to absolute spectral bidirectional reflectivity. Results are presented for rough gold and grooved nickel surfaces, considering the variation with incident and reflected angle. The surface reflectivity for gold is largely independent of wavelength in the infrared region of interest, while the nickel surface exhibits spectral variation. The experimental results are compared to complete electromagnetic theory predictions and other measurements.
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Fourier Transform Infrared System Measurement of the Bidirectional Reflectivity of Diffuse and Grooved Surfaces
J. N. Ford,
J. N. Ford
Department of Mechanical and Industrial Engineering, University of Illinois, 1206 West Green Street, Urbana, IL 61801
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K. Tang,
K. Tang
Department of Mechanical and Industrial Engineering, University of Illinois, 1206 West Green Street, Urbana, IL 61801
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R. O. Buckius
R. O. Buckius
Department of Mechanical and Industrial Engineering, University of Illinois, 1206 West Green Street, Urbana, IL 61801
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J. N. Ford
Department of Mechanical and Industrial Engineering, University of Illinois, 1206 West Green Street, Urbana, IL 61801
K. Tang
Department of Mechanical and Industrial Engineering, University of Illinois, 1206 West Green Street, Urbana, IL 61801
R. O. Buckius
Department of Mechanical and Industrial Engineering, University of Illinois, 1206 West Green Street, Urbana, IL 61801
J. Heat Transfer. Nov 1995, 117(4): 955-962 (8 pages)
Published Online: November 1, 1995
Article history
Received:
January 1, 1995
Revised:
June 1, 1995
Online:
January 23, 2008
Citation
Ford, J. N., Tang, K., and Buckius, R. O. (November 1, 1995). "Fourier Transform Infrared System Measurement of the Bidirectional Reflectivity of Diffuse and Grooved Surfaces." ASME. J. Heat Transfer. November 1995; 117(4): 955–962. https://doi.org/10.1115/1.2836316
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