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To ensure high reliability for advanced automotive electronics, investigation and understanding on the failure mechanisms under harsh conditions are needed. New methods and technologies for improved reliability and increased lifetime should be developed. In this paper, an investigation on the effect of high temperature aging on the thermomechanical properties, microstructure of the molding compounds...
Many polymer based materials, such as molding compound, are commonly used in plastic encapsulated packages. In spite of many advantages, most of them, however, are hydrophilic and absorb moisture when exposed to a humid environment. This induces swelling and deformation mismatches in a package and leads to failure in some cases. Polymer materials swell upon absorbing moisture, while the adjacent non-polymeric...
The thermal decomposition of TiH2 during melt hydrogenation process is physically simulated by thermogravimetric analysis (TGA). The thermal decomposition characteristics of TiH2 are recorded during heating at different rate in a ceramic crucible in the condition of vacuum. The results depending on the thermogravimetry loss weight curve of TiH2 show that the initial temperature of thermal decomposition...
Fractal geometry was used to describe the calcination of limestones and the sulfur-removal process performed in TGA instrument, and the fractal dimension was calculated through the nitrogen adsorption. The effect of calcination of limestones on the porous structure and fractal dimension of calcined limestones was investigated, and the highest value of fractal dimension 2.72 can be obtained at 850??C...
This paper presents the first MEMS device for ThermoGravimetric Analysis (TGA) with integrated thermal actuators. It consists of a sensing cantilever paddle connected to two separated thermal actuators, one at each side of the cantilever. Moreover, it has an integrated thermocouple that allows combined TGA and calorimetric measurements. To demonstrate the device performance TGA of copper sulfate pentahydrate...
Utilities continue to experience electrically induced manhole events. Eighty-five percent of manhole events are caused by insulation breakdown, and 97% of the breakdowns occur on secondary cable insulation. The vast majority of manhole events involve only smoke, but a very small minority involve more serious phenomena. The restrictive conditions under which secondary cable insulation breakdown leads...
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