Using the transient plane source (TPS) technique, simultaneous measurements of thermal conductivity and thermal diffusivity were taken from phenolformaldehyde (PF) composites, reinforced by pineapple leaf fiber. Testing was done on samples of varying weight percentages. Thermal conductivity of pure fiber was evaluated and compared with the thermal conductivity of the composite fiber....
Cast irons are materials with complex internal structures, exhibiting multiple changes in physical and mechanical properties due to graphite in their microstructures. In this study, various amounts of silicon alloys and ferrite were added to samples of lamellar, compacted, and spheroidal graphite cast irons to determine how this would affect their thermal conductivities. A thermal analyzer was used to measure thermal conductivities of the composites with the transient plane source (...
Despite their tendencies to have low thermal conductivities, epoxy molding compounds (EMCs) are extensively used in automotive applications. In this study, magnesium oxide (MgO) was used as a conductive filler in ECMs to improve the thermal conductivity of the ECMs without altering other important characteristics. A thermal constants analyzer was used to measure the thermal conductivity of the MgO-EMC composites. Ultimately, one of the prepared MgO-EMC compounds was found to ...
The Transient Plane Source method (TPS) simultaneously measures thermal conductivity and thermal diffusivity. This paper investigates the possibilities of using sensors, to record the thermal effusivity of a substrate. With the original method, the thermal effusivity of uniaxial, homogeneous materials in the through-plane direction can be estimated. Tests were performed to analyze the differences in single-sided vs. double-sided testing. For 1-dimensional samples, where heat flow is controlled along the sample, ...
Vacuum insulation panels (VIPs) are highly insulative materials that have industrial applications. This study aimed to replace glass fibers (GF) and fumed silica (FS) in VIPs with diatomaceous earth (DE) and glass bubbles (GB) to reduce the production cost and lengthen the service life of VIPs. Three experiments were carried out using a thermal constants analyzer based on the transient plane source (TPS) method to determine the effectiveness of DE ...
