Glass-fiber reinforced polymer-matrix composites are widely used in electro and automotive industry due to their easy processing, low cost, and possibility to tailor properties. Functional properties of the composites strongly depend on their weight fractions and individual properties of constituents. In this study, E-glass fiber (EGF) weight and microstructure are analyzed to see the effect on thermal properties of the composites. Thermal transport properties of the composites were measured at ...
Thermal conductivity of neat-epoxy resin is one of the lowest among all known solid materials. A common method of increasing thermal conductivity is through the addition of filler particles with high thermal conductivity. In this study, epoxy resin composites were studied to assess the possibility of increasing thermal conductivity for effective heat dissipation. A typical industrial liquid epoxy was used with commercial boron nitride powders PT100 and PTX25 as fillers. ...
Aeronautics safety strongly depends on the Quad Flat Non-Lead (QFN) reliability, whose junction temperature must remain as low as possible during operation. The power must remain below 0.1W, making the QFN64 model most relevant under these operating conditions. This study aims at improving the thermal design and reliability of the QFN64 device for embarked electronics. Numerical results are confirmed by thermal and electrical measurements carried out on prototypes for all ...
Semiconductor chalcogenide glasses are used in a wide range of applications as solid-state devices, both in scientific and technological fields. In this article, the mechanism of degradation of these materials is studied. The technique was used to measure the variation of thermal conductivity and thermal diffusivity of samples with different exposure times to neutron irradiation. Thermal conductivity and diffusivity increases proportionally with smaller exposure time, while at higher exposure times ...
Knowing the thermophysical properties of insulating building materials is essential in understanding heat loss. In this study, the thermal conductivity and thermal diffusivity of five marble samples were measured using the transient plane source (TPS) technique and compared to results obtained through the transient hot strip (THS) method. The TPS technique is nearly twenty times the initial resistance of the THS method and does not require small sample sizes or ...
