Abstract: AA2218–Al2O3(TiO2) composites are synthesized by stirring 2, 5, and 7 wt % of 1:2 mixture of Al2O3:TiO2 powders in molten AA2218 alloy. T61 heat-treated composites characterized for microstructure and hardness. Dry sliding ...

Abstract: The mechanical spacing between the slider and the disk has to be reduced to less than 5 nm in order to achieve an areal density of 1Tbit∕in2. Certain physical phenomena, such as those that ...

Abstract: Intermolecular and surface forces contribute significantly to the total forces acting on air bearing sliders for flying heights below 5 nm. Their contributions to the total force increase sharply ...

Abstract: Excavation related damage to underground utility lines is a serious and widespread problem. It is estimated that there are close to 500,000 utility strikes in the United States every year. Further analysis reveals that ...

Abstract: With the advent of precast construction technology, the construction industry has seen a rapid change in the way structures are built. Precast construction has reduced project costs and durations, increased the predictability, ...

Abstract: In this paper, we use continuum mechanics to develop an analytic treatment of elastic wave scattering from an embedded cylinder and show that a classic treatise on the subject contains important errors for oblique angles ...

Abstract: In situ gas hydrates have been found abundantly in the Arctic regions of the United States, Canada, and Russia. Gas recovery from such a hydrate reservoir under permafrost conditions is described in the present paper. The ...