Results 211 to 220 of about 1,147,409 (263)
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Contact area of the trapeziometacarpal joint
The Journal of Hand Surgery, 1999Eighteen cadaver hands were studied to determine the contact area of the trapeziometacarpal joint by using silicone rubber casts. Casting material was introduced into the trapeziometacarpal joint during several motions of the thumb and the contact location was observed. The ratios of the contact area to the total joint area were calculated. The contact
T, Momose, Y, Nakatsuchi, S, Saitoh
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Contact Areas in Human Elbow Joints
Journal of Biomechanical Engineering, 1982The paper describes the results of in-vitro experiments to determine the contact areas in the elbow joint during different anatomical positions. The casting technique, using wax as a casting material, was used in this study. The shape and size of the contact areas change, in different elbow positions ranging from full extension to full flexion.
V K, Goel, D, Singh, V, Bijlani
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Tibiofemoral Contact Area-Determination and Implications
The Journal of Bone & Joint Surgery, 1972We have presented a roentgenographic method of determining the area of contact of the femur on the medial and lateral tibial plateaus. The area of contact on both tibial plateaus decreases throughout the first 35 degrees of flexion. The average area of contact on the medial plateau was 1.6 times greater than the area on the lateral plateau.
D B, Kettelkamp, A W, Jacobs
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The actual contact area in viscoelastic contact problems
Polymer Mechanics, 1972The effect of the viscoelastic properties of polymers on the formation of the actual contact area is analyzed with reference to a rod model of the rough surface. The proposed time dependence of the actual contact area has been verified experimentally by an optical method for surfaces with different finishes (▽ 4, ▽ 8) and for different materials ...
V. A. Belyi +2 more
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Area-Contact Haptic Simulation
2003This paper presents the haptic interaction method when the interaction occurs at several points simultaneously. In many virtual training systems that interact with a virtual object, the haptic interface is modeled as a point. However, in the real world, the portion interacting with real material is not a point but rather multiple points, i.e., an area.
Kim, S.-Y. +2 more
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Reducing Contact Resistance in Graphene Devices through Contact Area Patterning
ACS Nano, 2013Performance of graphene electronics is limited by contact resistance associated with the metal-graphene (M-G) interface, where unique transport challenges arise as carriers are injected from a 3D metal into a 2D-graphene sheet. In this work, enhanced carrier injection is experimentally achieved in graphene devices by forming cuts in the graphene within
Joshua T, Smith +3 more
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Clinical Orthopaedics and Related Research, 1995
Sixteen fresh ankle specimens were tested under physiologic loads to evaluate the effect on the tibiotalar contact area of increasing-size posterior malleolar fracture fragments and disruption of the deltoid ligament. The tibiotalar joint was maintained in a neutral position, and contact areas were recorded on pressure sensitive film.
J M, Hartford +3 more
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Sixteen fresh ankle specimens were tested under physiologic loads to evaluate the effect on the tibiotalar contact area of increasing-size posterior malleolar fracture fragments and disruption of the deltoid ligament. The tibiotalar joint was maintained in a neutral position, and contact areas were recorded on pressure sensitive film.
J M, Hartford +3 more
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Advanced Energy Conversion, 1962
Abstract In measuring the termal conductivity k of materials at high temperatures, error due to heat radiation may be suppressed by making the sample very small (less than 1 mm), or by carrying out the measurement in a small region of a larger sample. To do this, one causes electrical heating in a small region of the sample near a small area contact,
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Abstract In measuring the termal conductivity k of materials at high temperatures, error due to heat radiation may be suppressed by making the sample very small (less than 1 mm), or by carrying out the measurement in a small region of a larger sample. To do this, one causes electrical heating in a small region of the sample near a small area contact,
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Contact Area and Thermal Contact Resistance in an Ideal Bolted Joint: Part 1 — Study of Contact Area
CAE/CAD and Thermal Management Issues in Electronic Systems, 1997Abstract The contact area at the interface of a bolted joint was investigated analytically, experimentally and numerically. Consideration was restricted to an ideal two-plate model for which the interface was perfectly flat. The two plates made circular contact under uniform axisymmetric normal loading.
Chang J. Park, Deborah A. Kaminski
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Contact area of rough surfaces
Wear, 1960Abstract An analysis is given of the contacting process of surfaces that are rough and wavy. The authors use three contact areas: apparent, contour and real. A unit protrusion is modelled as a cone with a spherical top deformed elastically and plastically.
I.V. Kragelsky, N.B. Demkin
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