Thermal Diffusivity Measurement of Polyamide Mesh by Temperature Wave Analysis1

The thermal diffusivity : of a polyamide mesh having plane wave structure was determined by a temperature wave analysis method developed in our laboratory. The measured thermal diffusivity of the polyamide mesh represents the combined result for the polyamide fiber part and the open space of the mesh. The polyamide mesh was measured in air and liquid paraffin conditions. Its effective thermal diffusivity was obtained as a function of the volume coIntent of the surrounding material. A unit-cell model was applied to the polyamide mesh structure and shows good correspondence with the experimental results.