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A new constitutive relation for powder materials used in finite element analysis (FEA) of hot isostatic pressing (HIP) complex-shaped parts was derived from Perzyna’s elastic-viscoplasticity equations, and the stick–slip boundary modelling and thermomechanical coupling solution were achieved. The temperature-dependent mechanical and thermal parameters were determined through experiments. A complex-shaped...
This paper presents conversion from coplanar waveguide (CPW) to fundamental rectangular waveguide mode for millimeter-wave applications. The transition is designed using cosine shaped fin to give broadband operation. It provides an efficient solution to in-line integration with optoelectronic devices on lithium niobate for the applications of millimeter-wave to optical signal processing. Optimization...
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