Zobrazeno 1 - 10
of 53
pro vyhledávání: '"D. P. DeWitt"'
Publikováno v:
Journal of Thermophysics and Heat Transfer. 20:327-335
The accuracy of the "in-cavity" calibration of heat-flux meters up to 500 kW · m -2 irradiance levels by insertion into the cavity of a high-temperature blackbody is examined. The experimental study consists of measurements on two thermopile heat-fl
Publikováno v:
Journal of Thermophysics and Heat Transfer. 18:333-341
Conventional calibration of heat-flux sensors uses high-temperature blackbody radiation and places the sensors away from the blackbody aperture. This approach limits the achievable calibration heat flux to about 50 kW/m 2 . Recent interest in extensi
Publikováno v:
International Journal of Heat and Mass Transfer. 45:1945-1949
Advances in microelectronics led to the development of rapid thermal processing (RTP). Accurate in situ temperature measurement and control are crucial for RTP furnaces to be largely accepted in the fabrication of semiconductor chips. This paper desc
Publikováno v:
Metallurgical and Materials Transactions B. 25:459-462
A set of computer algorithms has been developed to facilitate the measurement of temperature by radiometry during the galvannealing of steel strip. During the galvanneal process, the emissivity of the surface of the strip increases rapidly from a val
Publikováno v:
Thermochimica Acta. 218:317-328
During the galvanneal process, zinc-coated steel sheet is rapidly heat-treated in order to develop desirable characteristics in the material. The surface changes rapidly from a layer of highly specular liquid zinc with a spectral emissivity of approx
Autor:
D. P. DeWitt, G. S. Birth
Publikováno v:
Applied optics. 10(3)
Autor:
D. P. DeWitt, W. N. Delgass, G. J. Dail, R. L. Shoemaker, Z. Dardas, Benjamin K. Tsai, B. A. Cowans
Publikováno v:
International Journal of Thermophysics. 11:269-281
The traditional contact methods of temperature measurement for metal processing applications provide accuracies of ±10 K. Noncontact methods based upon emissivity compensation techniques have the potential for improved accuracy with greater ease of
Autor:
J. C. Richmond, D. P. DeWitt
Publikováno v:
Theory and Practice of Radiation Thermometry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e714e0316fcce193e9842ba2e91806b
https://doi.org/10.1002/9780470172575.ch2
https://doi.org/10.1002/9780470172575.ch2
Publikováno v:
12th IEEE International Conference on Advanced Thermal Processing of Semiconductors, 2004. RTP 2004..
Since pyrometric thermometry is a noncontact method, it has great promise as a technique for monitoring silicon wafers during rapid thermal processing (RTP). Absolute values of surface emissivity are required when making pyrometric temperature measur
Publikováno v:
38th AIAA Thermophysics Conference.