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Test methods and measuring apparatus for measurement of the dynamic coefficient of friction of brushes

✍ Scribed by Mateo Milković

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
581 KB
Volume
30
Category
Article
ISSN
0008-6223

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✦ Synopsis

The coefficient of friction is a very important operational characteristic of brushes, which is indirectly measured according to conventional methods by measurement of the tangential forces acting on the brush. Methods making possible measurements of the static and dynamic coefficient of friction are suggested because only the static coefficient of friction can be measured by coventional methods, Two measuring methods have been developed and described; an electrical balance can be used for slower dynamic changes, and a resistance bridge for faster dynamic changes. Key Words-Carbon brushes, coefficient of friction, testing methods. pulsating current, cyclic heating.

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