this paper demonstrates a preliminary investigation of geometry, function and its relation to dfx principles, namely dfm (design for manufacturing). this is the starting point for research on the development of an expert system that assesses design goals along dfx principles in a feature-based cad environment. there is a need for a deeper level of understanding of the relationship between geome...

objective: one of the major problems of all ceramic restorations is their probable fracture against the occlusal force. the aim of the present in-vitro study is was to compare the effect of two marginal designs (chamfer & shoulder) on the fracture resistance of zirconia copings, cercon (cad/cam). materials and methods : this in vitro study was done with single blind experimental technique. one ...

Compact model for expressing turn-off waveform for advanced trench gate IGBTs is proposed even under high current density condition. The model is analytically formulated only with device structure parameters so that no fitting parameters are required. The validity of the model is confirmed with TCAD simulation for 1.2 kV to 6.5 kV class IGBTs. The proposed turn-off model is sufficiently accurat...

the satellite battery pack is one of the important and vital parts that are required for conducting special design with multiple capabilities. some parameters like the minimum weight, lack of outgassing of parts, avoiding from short- circuit in batteries inside battery pack, the possibility for making series connection in batteries, and prevention from destroying battery pack structure caused b...

Since 1984 the International Organization for Standardization (ISO) has been working on the development of a comprehensive standard for the electronic exchange of product data between computer-based product life-cycle systems. Initial concentration has been on design and manufacturing applications. This standard, ISO 10303 [1,2,3], is informally known as STEP (STandard for the Exchange of Produ...

objectives : marginal adaptation is important for long-term success of full-coverage restorations. the aim of this study was to determine the effect of porcelain firing cycle and different thicknesses of ips e.max core on marginal accuracy of all-ceramic restorations. materials and methods : a standard stainless steel die with 0.8 mm classic chamfer finish line and 10° taper was used in this in...

Device and circuit simulations using process/physics-based Technology CAD tools are done to project the scaled CMOS speed-performance enhancement that can be expected from process-induced strained-Si CMOS.

This paper presents the modeling and simulation of a 2x2 optical MEM switch using our system-level, mixed-technology CAD tool, Chatoyant. Simulations include operation in both the “cross” and “bar” states and the mechanical tolerancing of the system.