Results 211 to 220 of about 69,792 (265)

Implant wear mechanisms—basic approach

Biomedical Materials, 2008
Numerous parameters control the long-term performance of a total hip joint arthroplasty. The articulating motions between the femoral and the acetabular components produce wear debris in a hip implant. Surface roughness, clearance, coefficient of friction and sliding distance are found to be contributing parameters that affect wear rates. Wear produced
Bhatt, Himanshu, Goswami, Tarun
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Wear Mechanism Based on Wear Anisotropy

Tribology Transactions, 2000
Self-mated dry sliding wear experiments were conducted on alumina using a pin-on-disc configuration. Worn alumina surface showed pits and projections in the size and shape of the grains. This paper shows that formation of these pits and projections are due to the wear anisotropy observed in single crystal alumina.
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Micro-mechanisms of wear — wear modes

Wear, 1992
Abstract Grooves are formed on a wear surface in sliding contact and even when the contacting surfaces are of the same material the wear on the contact interface results in free particles. The abrasive friction and the abrasive wear have been proven to be the representative type of friction and wear in general sliding of surfaces from such ...
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A mechanism of hypertrophy and wear of the myocardium

The American Journal of Cardiology, 1965
C OMPENSATORY hyperfunction of the heart is an important factor in the development of the general compensation observed clinically in various cardiovascular diseases. It regularly leads to the development of cardiac hypertrophy and later to a gradual weakening of the myocardium.
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The mechanism of wear of polytetrafluoroethylene

Wear, 1973
Abstract Experiments to study the effects of heat treatment, speed and temperature on the friction and wear properties of polytetrafluoroethylene (PTFE) have been carried out. The mechanism of wear is discussed on the basis of the results of these experiments and electron microscopy of the friction surfaces.
Kyuichiro Tanaka, Yoshitaka Uchiyama, Satoru Toyooka   +2 more
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Contact Mechanics: Friction and Wear

1998
Contact mechanics describes the stresses and the deformations in the neighbourhood of the contact between two pressed bodies. The following examples are given: concentrated and distributed normal and tangential loads, point load, pressure on a circular surface, hertzian contact for normal and tangential loadings.
Dominique François, André Pineau, André Zaoui   +2 more
openaire   +1 more source

Extrusion wear and transition of wear mechanisms of steel

Wear, 2008
A pin-on-disc configuration was used for studying the wear mechanisms of steel tested in conditions commonly known as oxidational wear regime. The results show that when the nominal contact pressures on the sliding pairs made of medium carbon steel pin/die steel disc and die steel pin/die steel disc at a sliding velocity of 4 m/s were larger than 5.5 ...
H. So, H.M. Chen, L.W. Chen
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Wear-rate transitions and their relationship to wear mechanisms

Acta Metallurgica, 1987
Abstract This paper is concerned with ways of classifying wear and presenting the information on a wear map. The unlubricated sliding wear of steel is classified into seven elementary mechanisms of material removal. The two principal modes of wear, namely mild and severe wear, provide an alternative but related classification.
S.C. Lim, M.F. Ashby, J.H. Brunton
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Thermal and Mechanical Mechanisms of Polymer Wear at the Nanoscale

ACS Applied Materials & Interfaces
Wear is a ubiquitous phenomenon that limits the life of many engineered components with sliding interfaces through the gradual removal of material. The wear of polymers is crucial in many applications, ranging from bearings to orthopedic implants to nanolithography processes.
Yijie Jiang, Kevin T. Turner
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The Mechanism of Fretting Wear

Journal of Lubrication Technology, 1973
An experimental study has been carried out of wear and energy dissipation of contacts vibrated at high frequencies. The amplitude, number of cycles, and degree of lubrication were varied. In addition, an analysis was carried out of quantitative fretting wear results described in the literature.
I. F. Stowers, E. Rabinowicz
openaire   +1 more source