Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
662727 | International Journal of Heat and Mass Transfer | 2004 | 12 Pages |
Abstract
This work shows that the Fourier number (Fo) defines the shape and amplitude of the thermal response of a semi-infinite layer sample. The introduction of the responsivity, Rs, of the TTR method provides the ability to assess the performance of the thermal conductivity measurements. A simplified heat transfer analysis of a finite layer sample revealed that the properties ratio, (ÏCpK)S/(ÏCpK)L, and the layer thickness, h/δP, uniquely define both temperature response and measurement responsivity. If the material under test is the substrate, this work can help improve the measurement accuracy by selecting the appropriate thickness of the top layer. If the material is a layer on top of a known substrate, this work suggests that the accuracy of the TTR measurements can be fully maximized.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Pavel L. Komarov, Peter E. Raad,