Optimal parameterization in the measurements of the thermal diffusivity of thermal barrier coatings | Zendy

Nenad Milošević | Zendy

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Optimal parameterization in the measurements of the thermal diffusivity of thermal barrier coatings

Author(s) -

Nenad Milošević

Publication year - 2007

Publication title -

thermal science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.339

H-Index - 43

eISSN - 2334-7163

pISSN - 0354-9836

DOI - 10.2298/tsci0701137m

Subject(s) - thermal diffusivity , materials science , laser flash analysis , thermal barrier coating , coating , substrate (aquarium) , composite material , thermal , thermal resistance , thermal contact conductance , flash (photography) , copper , polytetrafluoroethylene , electrical conductor , thermal conduction , optics , metallurgy , thermodynamics , oceanography , physics , geology

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.

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