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The railway market increasingly requires a longer useful life for the vehicles and a reduction of the maintenance operation, as well as the better prediction of possible failures of the various components. In this context, sensible components are the signal connectors used to transmit information along the train both in fixed and in detachable configuration. Therefore, the paper, after a brief analysis...
Paper discusses the state of the art physics-based analytical modeling and numerical analysis techniques developed for the prediction and description of electromigration (EM) induced conductance degradation of individual interconnect metal lines and on-chip power grids. Mechanical stress evolution caused by an electric current driven redistribution of vacancies and plating atoms, which populate the...
Electronic product works in various complicated conditions during the whole life cycle. Predicting environmental worthiness, judging the ability to resist environmental stress and identify failure states are very important to life prediction and health management of the electronic product. In China, the environmental engineering work for electronic product still focuses on environment test, and few...
This work develops an analytical model including the effect of series resistance as well as the surface recombination occurred at the edges. Mathematical intractability caused for the inclusion of series resistance has been resolved using the concept of the perturbation theory. Introducing a new boundary condition at the emitter edge of the fully depleted absorber region, the effects of surface recombination...
Aiming to the shell protection for the circuit, on the basis of analysising the relationship between the stress on passing the cover of protective shell and the least plastic flection stress, utilizing the principle of the wave front conservation, the equation is built to evaluate the impact resistance on protective shell, and the evaluation factor of the impact resistance can be extracted from this...
In this paper, we present a novel electrical test structure for determining the thermal expansion coefficients (TECs) of micromachined polysilicon thin films. The electrothermal properties of the test structure are analyzed. The pull-in method is exploited in characterizing TECs of thin films. In addition, an analytical model and a measurement method are developed. The finite element software ANSYS...
The limit extended capability is one of the key parameters in drilling design and drilling operation for an extended reach well, but people often overlook it. The study on this aspect is still rare at present. According to the practical drilling condition in extended reach well, the interstice element theory for the friction analysis of whole drill string was applied in building judging criteria and...
Stress optimization for memory devices is a complex process due to the continuous space of possible optimization values for relevant parameters. This paper uses a method based on electrical Spice simulation to perform this optimization process for DRAM devices. The paper presents a case-study performed in Qimonda to optimize the timing and temperature stresses for the strap problem in defective memory...
the text analyses the rule of load transmission of squeezed branch plate pile group foundation under horizon load by using the 3D elastic-plasticity finite element model. The results obtain relative displacement between pile and soil, bending moment of piles, and curves of soil resistance in different position, different step load and different deepness. The results show that: relative displacement...
ldquoDevelopment for advanced thermoelectric conversion systemsrdquo supported by the new energy and industrial technology development organization (NEDO) has been successfully completed as one of the Japanese national energy conservation projects. Three types of the cascaded thermoelectric modules operating up to 850 K in high electrode temperature and two types of Bi-Te thermoelectric modules operating...
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