TECHNICAL PAPERS: Radiative Heat Transfer

Surface Temperature Measurement of Semi-Transparent Ceramics by Long-Wavelength Pyrometry

[+] Author and Article Information
Frank E. Pfefferkorn, Yung C. Shin

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288

Frank P. Incropera

College of Engineering, University of Notre Dame, Notre Dame, IN 46556

J. Heat Transfer 125(1), 48-56 (Jan 29, 2003) (9 pages) doi:10.1115/1.1527906 History: Received February 05, 2002; Revised September 09, 2002; Online January 29, 2003
Copyright © 2003 by ASME
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Spectral complex index of refraction for PSZ 14
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Effective measurement depth, de, at which 63.2 percent of spectral radiation is absorbed in PSZ
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Normal spectral emissivity of as-sintered PSZ (1<λ<15 μm)19
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Schematic of long-wavelength pyrometer with protective aperture, air screen, and positioning stage
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Schematic of pyrometer location with respect to the workpiece, laser and cutting tool (ϕt=55 deg,ϕp=220 deg,Ll=1.6 mm,N=800 rpm,fr=16 mm/min)
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Optical differential image contrast (DIC) micrograph of polished and etched Mg-PSZ
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Transmitted light micrograph of polished Mg-PSZ thin section (30μm thick)
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Total (asymmetric) uncertainty in measured temperature as a function of surface temperature
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Repeatability of surface temperature measurement under nominal operating conditions
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Effect of laser power on temperature history at the pyrometer location
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Effect of feed rate on temperature history
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Effect of depth-of-cut on temperature history




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