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Brittle-to-ductile transition plays a crucial role in ultra-precision machining of hard-brittle materials. In the present work, we investigate the brittle-to-ductile transition in diamond grooving of monocrystalline silicon by finite element modeling and simulation based on Drucker-Prager constitutive model. The brittle-to-ductile transition behavior is distinguished by analyzing evolutions of chip...
Since the massive deployment of Cyber-Physical Systems (CPSs) calls for long-range and reliable communication services with manageable cost, it has been believed to be an inevitable trend to relay a significant portion of CPS traffic through existing networking infrastructures such as the Internet. Adversaries who have access to networking infrastructures can therefore eavesdrop network traffic and...
Two transformer-based laminated core models are proposed and prototyped for determining the exciting power (or/and specific total iron loss) occurred at the joints and the silicon steel lamination, and some measured and calculated results are presented in the paper. The product-level models also can be used to investigate the over-saturation and the relevant electromagnetic behavior of power transformer...
A new method to analyze the losses of core of power transformers is proposed. Epstein frame and specimens that are sheared at different angles to rolling direction to measure B-H curves and Wt-B curves of grain-oriented silicon steel sheets are used with this method to take account of anisotropy of the core. The computational results using both the conventional and proposed methods of the iron loss...
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