A variety of metallic hollow sphere structures were prepared with different metals, values for diameter and shell thickness and their densities were predicted using analytical/empirical models. From these densities, admitted scaling laws are used to predict thermal conductivity. The predicted values for thermal conductivity are then compared to experimental values for the same structures, as determined by the transient plane source (TPS) technique....
Using the transient plane source (TPS) method, the thermal conductivities of a series of magnesium integral foams have been measured experimentally. The main factor contributing to the thermal conductivity of the magnesium foams is the bulk density. In addition to using the TPS technique, micro-computed tomography (µCT) was used to explain any deviations from expected thermal conductivity....
Using the transient plane source (TPS) method, the thermal conductivities of a series of crosslinked closed-cell polyethylene foams were measured. The experimental values obtained were compared to measurements made by a steady-state method (heat-flow meter). Through the use of the TPS technique, it was possible to observe how physical characteristics such as cell size, density and carbon black content affected the overall thermal conductivity. The authors found that the trends ...
The present study look at the creation of unfilled and carbon nanofibre (CNF)-filled polypropylene (PP) foams, and their subsequent testing of thermal and mechanical properties. The testing of thermal properties was accomplished by the TPS Technique and determined that when using up to 20 wt.% CNF as filler there was no increase in thermal conductivity of any of the sample foams. Therefore it was decided that it was the foamed ...
Through the use of the transient plane source method the researchers were able to measure the thermal conductivity of a collection of cellular metals as well as the in- homogeneities of the samples. The volume of the samples was varied and the density of these individual volumes was calculated from tomography....
