A Pressure-Volume Apparatus to Measure the Effective Thickness of Cellular Plastic Test Specimens
Normandin, Nicole; Kumaran, M.K.; Normandin, Nicole, Building Performance Laboratory Institute for Research in Construction National Research Council of Canada Ottawa, Ontario, K1A 0R6 Canada; Kumaran, M.K., Building Performance Laboratory Institute for Research in Construction National Research Council of Canada Ottawa, Ontario, K1A 0R6 Canada
Журнал:
Journal of Thermal Envelope and Building Science
Дата:
1992
Аннотация:
Thin specimens of cellular plastic insulations are used in thermal re sistance and gas diffusion property measurements. It is known that several cells on the surfaces of the test specimens are destroyed during specimen preparation. Hence the effective thickness of the test specimen differs from the geometrical thickness and proper corrections are to be made for the thickness of the destroyed surface layers before other properties are calculated.
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