FIELD: heating.
SUBSTANCE: system consisting of a test specimen fixed between two similar standard specimens made from the same transparent material of known thermal conductivity, where all specimens are made in the form of right cylinders with similar bases and are brought into contact with their end faces, is placed into an interferometer. At creation in the system of a stationary one-dimensional heat flow directed perpendicular to the plane of contacts, change of the shape of the light beam phase of the interferometer, which passes through the standard specimens, is measured, and thermal conductivity is calculated based on the measured change of the profile of the light beam phase of the interferometer, thermal conductivity of the standard specimens and height of the test specimen.
EFFECT: improving accurate determination of thermal conductivity of specimens of a small size.
1 dwg
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