Results 221 to 230 of about 25,310 (261)
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Dental Materials, 2005
Frictional forces play a major role in the oral wear process of dental resin-based composites (RBCs) and it would be of interest to consider how the energy from friction is dissipated at the material surface. Consequently, the micromechanical wear properties of conventional methacrylate compared with novel oxirane RBCs were assessed.The frictional ...
W M, Palin +6 more
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Frictional forces play a major role in the oral wear process of dental resin-based composites (RBCs) and it would be of interest to consider how the energy from friction is dissipated at the material surface. Consequently, the micromechanical wear properties of conventional methacrylate compared with novel oxirane RBCs were assessed.The frictional ...
W M, Palin +6 more
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Frictional resistance coefficient during air transport by continuous flow
Chemistry and Technology of Fuels and Oils, 19691. The following dependence of the resistance coefficient on the Froude parameter was obtained for all the materials experimented with: $$\lambda = 4.25\left( {\frac{D}{d}} \right)^{0.5} Fr^{ - 0.75} .$$ 2. In determining the resistance coefficient, it is recommended that the total loss in head in air-transport by continuous flow ...
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Device to measure friction coefficients and contact resistance inside a scanning Auger microscope
Review of Scientific Instruments, 1987A device is described for in situ, rotary pin-on-disk wear studies in a commercial scanning Auger microscope. This device is mounted on a single 8-in. vacuum flange and can be installed in place of the normal sample mounting manipulator. The device allows simultaneous measurement of contact resistance and friction coefficient under controlled ...
T. G. McDonald +3 more
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Coefficient of Friction and Rolling Resistance of Selected Fruits
2003Thai Agricultural Research Journal, 21, 1, 3 ...
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Wear, 1987
Abstract A new apparatus is described which measures the momentary co-efficient of friction and the interfacial electrical resistance of a sample sliding in a rotating hoop under the combined action of friction and gravity. The apparatus is housed under a bell-jar and thus can be used in various ambient atmospheres or vacuum. Preliminary measurements
L.J. Bredell +2 more
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Abstract A new apparatus is described which measures the momentary co-efficient of friction and the interfacial electrical resistance of a sample sliding in a rotating hoop under the combined action of friction and gravity. The apparatus is housed under a bell-jar and thus can be used in various ambient atmospheres or vacuum. Preliminary measurements
L.J. Bredell +2 more
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Molecular Crystals and Liquid Crystals, 2017
Although polyurethane (PU)- and polysiloxane-based coating agents find wide applications in electronics and automotive industries (e.g., for sealing), their full potential can be realized only base...
Yong-Sung Kim +4 more
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Although polyurethane (PU)- and polysiloxane-based coating agents find wide applications in electronics and automotive industries (e.g., for sealing), their full potential can be realized only base...
Yong-Sung Kim +4 more
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The Effect of Hull-Ice Friction Coefficient on the Resistance of Icebreaking Ships
SNAME 24th American Towing Tank Conference, 1995Using empirical data from model test with 5 similar hull forms, a relationship between ice resistance and friction coefficient is developed. The techniques used in interpreting the model data and normalizing to a common basis are also presented. These include breaking the total resistance into four components; ice breaking, submergence, clearing and ...
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Advanced Materials Research, 2013
In this article the folding and deploying mechanism is researched, the equivalent dynamical model is built, and the configuration of the folding and deploying mechanism is designed including the folding mechanism, the deploying mechanism and the locked mechanism. This paper obtains the athletic rule of folding and deploying mechanism, then analyses the
Yao Yao Li, Chun Lan Jiang
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In this article the folding and deploying mechanism is researched, the equivalent dynamical model is built, and the configuration of the folding and deploying mechanism is designed including the folding mechanism, the deploying mechanism and the locked mechanism. This paper obtains the athletic rule of folding and deploying mechanism, then analyses the
Yao Yao Li, Chun Lan Jiang
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Effects of mixing speed of a composite on its friction coefficient and wear resistance
International Journal of Materials Research, 2017Abstract In this work, we investigated the effects of mixing speed on the tribological performance of a composite prepared with potassium titanate whiskers, palygorskites, and aramid fibers during the mixing process. The results showed that for the aramid fibers with a uniformity of 5–6 mm, 500 rad min−1 was the best speed compared with ...
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Wear, 1983
Abstract A method has been developed which allows the simultaneous determination of both a skier's drag area and the friction coefficient of his skis against the snow in a single measurement. The method requires time measurements at four equidistant points on a horizontal track. Thus three velocity determinations are possible.
Matti A.H. Leino +2 more
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Abstract A method has been developed which allows the simultaneous determination of both a skier's drag area and the friction coefficient of his skis against the snow in a single measurement. The method requires time measurements at four equidistant points on a horizontal track. Thus three velocity determinations are possible.
Matti A.H. Leino +2 more
openaire +1 more source