Results 261 to 270 of about 3,048,399 (301)
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A simple electrical contact for resistivity ratio measurements
Journal of Physics E: Scientific Instruments, 1971A mechanical device for making low-pressure, non-solderable electrical contact to irregular specimens is described and its advantages in use are outlined.
I A Bucklow, J H Potter
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The effect of the gear wear for the contact ratio
2019The contact ratio is such a parameter of a gear, that is very important because of the noise of the drive and the quality of the mesh. In general condition, the contact ratio can be considered constant during the whole lifetime. Although there are applications where the gears are working without any lubrication and the only criteria of the lifetime ...
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The Effect of Addendum Factor on Contact Ratio Factor and Contact Stress for Spur Gears
2019 7th International Renewable and Sustainable Energy Conference (IRSEC), 2019This work is about analyzing the effect of changing the addendum factor on contact ratio factor and contact stress generated on zone action of spur gear teeth during meshing. In this paper, three values of addendum factor were considered: 1, 1.15 and 1.25, for each the contact stress was calculated according to ISO formula and compared with the results
Belarhzal Samya +3 more
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Study on contact distortion during high aspect ratio contact SiO2 etching
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 2014As pattern density is increased in semiconductor integrated circuits (ICs) and pattern sizes are decreased to nanometer scale, high aspect ratio contact etching has become one of the most difficult processes in nanoscale IC fabrication. The increase in aspect ratio of the contact oxide etching raises problems such as low mask selectivity, microloading,
Jong Kyu Kim +3 more
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Basic Speed Ratio of an Angular Contact Bearing
Journal of Lubrication Technology, 1980A characteristic number, the basic speed ratio for an angular contact ball bearing, is defined and shown to be 1) accurately measurable; and 2) dependent on ball-race coupling. Some measurements of basic speed ratio are discussed in terms of kinematic equivalence, and compared with predictions obtained from a computer simulation.
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Effect of change of contact ratio on contact fatigue stress of involute spur gears
International Journal of Current Engineering and Technology, 2018This paper dealt on the effect of change of contact ratio on the contact fatigue stresses generated on meshing involute spur gear teeth during operation. In this study, different cases of six contact ratio gearing between and have been analyzed. For each contact ratio the rate of load sharing and angular and radial position of load were determined on ...
Michael Gebremariam +3 more
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Contact of Elastic Bodies with Negative Poisson’s Ratio
2003A class of large deformation contact problems for linear elastic, isotropic bodies exhibiting negative Poisson’s ratio will be considered, Bilateral as well as unilateral contact with friction is analyzed. Essential differences in deformation as well in stress distribution in comparison with conventional materials have been corroborated.
G. Szefer, D. Kedzior
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Design of High Contact Ratio Gears
Journal of the American Helicopter Society, 1982Kenneth M. Rosen, Harold K. Frint
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