Abstrakt
Transient heat transfer is studied and compared in two plane-parallel
composite walls and one EPIDIAN 53 epoxy resin wall acting as a matrix for
both composites. The first of the two walls is made of carbon-epoxy
composite; the other wall is made of glass-epoxy composite, both with
comparable thickness of about 1 mm and the same number of carbon and glass
fabric layers (four layers). The study was conducted for temperatures in
the range of 20-120 °C. The results of the study of thermal diffusivity
which characterizes the material as a heat conductor under transient
conditions have a preliminary character. Three series of tests were
conducted for each wall. Each series took about 24 h. The results from the
three series were approximated using linear functions and were found
between (0.7-1.35) x 10-7m2/s. In the whole range of temperature
variation, the thermal diffusivity values for carbon-epoxy composite are
from 1.2 to 1.5 times higher than those for the other two materials with
nearly the same thermal diffusivity characteristics.
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Autorzy i Afiliacje
Joanna Piotrowska-Woroniak