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GaAs based hetero-junction bipolar transistors (HBTs) offer high speed and good device matching characteristics that are attractive for many high-speed circuits. However, thermal behaviors with multi-fingers can significantly affect HBTs performance. In this paper, three dimensional (3-D) finite-element modeling (FEM) approaches are built up to analyze the maximum temperature region and temperature...
This paper presents the results of eight tests on loaded full-scale cold-formed thin-walled steel structural panels, two tests at ambient temperature and six exposed to the standard fire condition on one side. The test panels used two types of lipped channels, 100×54×15×1.2mm or 100×54×15×2mm, each channel having two service holes, one near the top and one near the bottom. Three different load levels,...
Cold-formed thin-walled steel sections are usually used in planar structural systems with insulation on both sides. Due to their small thickness, when exposed to fire, they dissipate heat to the surrounding quickly, leading to rapid temperature increases. Also because they employ planar fire protection and are usually exposed to fire attack from one side, a significant temperature gradient through...
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