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Data Reduction and Thermal Product Determination for Single and Multi-layered Substrates Thin-Film Gauges

, , , and . The 16th Symposium on Measuring Techniques in Transonic and Supersonic Flow in Cascades and Turbomachines, (September 2002)

Abstract

Single and two-layered substrate thin film gages allow the determination of wall heat flux when testing in short duration blowdown wind tunnel. A numerical data reduction technique is proposed and validated to solve the unsteady heat conduction equation with multiple layer substrates. Then, different methods for the determination of the thermal properties of single or two-layered substrates are applied and compared. Finally, the numerical technique and the determined thermal properties are used to perform measurements on a stator blade using two-layered thin film gauges.

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