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Wear coefficient
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Wear coefficient : ウィキペディア英語版
Wear coefficient

The wear coefficient is a physical coefficient used to measure, characterize and correlate the wear of materials.
==Background==
Traditionally, the wear of materials has been characterized by weight loss and wear rate. However, studies have found that wear coefficient is more suitable. The reason being that it takes the wear rate, the applied load, and the hardness of the wear pin into account. Although, measurement variations by an order of 10-1 have been observed, the variations can be minimized if suitable precautions are taken.〔

A wear volume versus distance curve can be divided into at least two regimes, the transient wear regime and the steady-state wear regime. The volume or weight loss is initially curvilinear. The wear rate per unit sliding distance in the transient wear regime decreases until it has reached a constant value in the steady-state wear regime. Hence the standard wear coefficient value obtained from a volume loss versus distance curve is a function of the sliding distance.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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