THERMAL SCIENCE

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Nenad D. Milošević

OPTIMAL PARAMETERIZATION IN THE MEASUREMENTS OF THE THERMAL DIFFUSIVITY OF THERMAL BARRIER COATINGS

ABSTRACT
The paper presents an estimation procedure for the measurement of the thermal diffusivity of thermal barrier coatings deposited on thermal conductive substrates using the laser flash method when the thermal contact resistance between the coating and substrate is unknown. The procedure is based on the application of the optimal parameterization technique and Gauss minimization algorithm. It has been applied on the experimental data obtained by using two different samples, one made of PTFE (polytetrafluoroethylene) coating deposited on a stainless steel substrate and the other made of PVC (polyvinylchloride) deposited on a copper substrate. .
KEYWORDS
laser flash method, optimal parameterization, parameter estimation, thermal barrier coatings, thermal contact resistance, thermal diffusivity, fire spread
PAPER SUBMITTED: 2007-02-21
PAPER REVISED: 2007-03-05
PAPER ACCEPTED: 2007-03-08
DOI REFERENCE: https://doi.org/10.2298/TSCI0701137M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2007, VOLUME 11, ISSUE Issue 1, PAGES [137 - 156]
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Optimal parameterization in the measurements of the thermal diffusivity of thermal barrier coatings

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