12,884 research outputs found
Torque transmission capability of composite-metal interference fit joints
No full textIn this paper the performance of an interference fit joint between a composite tube and a steel shaft under torsional load was investigated. Some important design parameters on the interference fit joint were presented and addressed based on the results from analytical and numerical models. The stress state of the joint under torsional load with contact elements was calculated by three dimensional finite element analysis. For the long term use of the interference joint the viscoelastic behavior of the composite tube was also considered through the analytical model. Finally the validity of analysis of the interference fit joint was experimentally examined. (c) 2005 Elsevier Ltd. All rights reserved
Composite hybrid valve lifter for automotive engines
No full textThis paper describes the development of a hybrid valve lifter composed of composite and steel for use in a valve train in an automotive internal combustion engine. Emphasis in this work was placed on reducing the mass of the valve lifter in order to achieve higher fuel efficiency. Several issues regarding design and manufacture of the composite hybrid valve lifter had been investigated and addressed based on the functional requirements of the valve lifter. Prototype hybrid valve lifters were manufactured and a series of durability tests were conducted on the laboratory bench. The tests showed that hybrid valve lifter were sufficiently durable to withstand the test loads. (C) 2004 Elsevier Ltd. All rights reserved
Microfabrication of the split and recombination micromixer and the effect of its cross-sectional rotation
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Mrofabricaton of the split and recombination micromixer and the effect of its cross-sectional rotation
No full textA thermodynamic study of phase equilibria in the Sn-Bi-Pb solder system
No full textAs a basis for the design and development of low-temperature solder alloys, the thermodynamic calculation of phase equilibria has been carried out on the binary Bi-Pb and ternary Sn-Bi-Pb systems over the entire composition range. The Gibbs free energy of individual phases has been approximated using the sub-regular solution model and thermodynamic parameters for each phase have been evaluated using available experimental information on phase boundaries and other related thermodynamic properties. The calculated phase diagrams and thermodynamic quantities of the Bi-Pb binary system show good agreement with the experimental data, and the liquidus projection and vertical sections in the Sn-Bi-Pb ternary system are well reproduced using assessed thermodynamic parameters derived in this work
Experimental Study of the Shrinkage Ratio of PDMS Its Alignment for the Wafer Level Process
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