Abstrakt
The paper presents the application of similarity theory to investigations
of transient heat transfer in materials with complex structure. It
describes the theoretical-experimental method for identification and
design of the structure of two-component composite walls based on the
research of the thermal diffusivity for the composite and its matrix
separately. The thermal diffusivity was measured by means of the modified
flash method. The method was tested on two samples of double-layer ‘epoxy
resin – polyamide’. All the investigated samples had the same diameter of
12 mm and thickness ranging from 1.39–2.60 mm and their equivalent value
of thermal diffusivity ranging from (1.21–1.98)×10-7m2/s. Testing the
method and research on carbon/epoxy composites was carried out at
temperatures close to room temperature.
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