DETERMINATION OF THERMOPHYSICAL CHARACTERISTICS OF MATERIALS BY TEMPERATURE MEASUREMENTS ON THE LINE OF A SPECIMEN'S CONJUGATION WITH A HALF-SPACE

Consideration has been given to the coeffi cient inverse heat conduction problem for determination of thermophysical characteristics of a material by temperature measurements on the line of a specimen's conjugation with a semiinfi nite layer of another material with known thermophysical properties. Accounting for heat sink in a thermophysical experiment makes it possible to raise the accuracy of determining the thermophysical characteristics of a material with preservation of its structure and to avoid the need for a laborious eff ort to ensure the adiabaticity of the specimen's back surface. Based on the analysis of sensitivity coeffi cients, measurement times have been identifi ed that are the most informative for determining thermophysical characteristics. The proposed methodology removes limitations on the selection of a heating regime for a material and expands a Fourier-number-permissible measurement range.
   
Author:  V. A. Zverev, A. V. Teploukhov
Keywords:  thermophysical characteristics, inverse heat conduction problem, plate, half-space.
Page:  1586