NDLI: Reduction of Thermographic Phosphors Data to Heat Rates

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Crim, P. R. Walker, D. G. Allison, S. W. Goedeke, S.
Copyright Year	2004
Abstract	Thermographic phosphors have emerged as a new technique for measuring heat fluxes, which relies on the temperature dependent intensity decay of thermographic phosphors. However, instead of reducing the intensity data to temperatures, heating rate is estimated. It has been shown that the heating rate can provide significantly better heat flux estimates than temperature measurements. Because the technique is new, little is known about the quality of heating rate estimates. Further, the heating rate estimation depends on the introduction of additional free parameters, which increases the uncertainty of the estimates. The analysis presented here indicates that sample rates must be one to two orders of magnitude greater than the frequency at which the heat flux must be known. Also, the sensitivity of the intensity to higher-order derivatives is small suggesting that derivatives beyond the heating rate are not accessible with single-shot data.
Sponsorship	Heat Transfer Division
Starting Page	67
Ending Page	73
Page Count	7
File Format	PDF
ISBN	079184711X
DOI	10.1115/IMECE2004-59900
Volume Number	Heat Transfer, Volume 3
Conference Proceedings	ASME 2004 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2004-11-13
Publisher Place	Anaheim, California, USA
Access Restriction	Subscribed
Subject Keyword	Temperature measurement Heat Temperature Uncertainty Phosphors Heating Flux (metallurgy) Heat flux
Content Type	Text
Resource Type	Article

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