A hard metal ball of 10mm diameter is slid across a soft metal surface and produces a groove of 3mm width. The interfacial shear strength is one-tenth of the bulk shear strength of the softer metal. For an experimentally measured coefficient of friction of 0.45 for the contact, calculate the percentage contribution of adhesive and ploughing components to the total coefficient of friction.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Please solve no 4 (engineering tribology) 

A hard metal ball of 10mm diameter is slid across a soft metal surface and produces a groove of
3mm width. The interfacial shear strength is one-tenth of the bulk shear strength of the softer
metal. For an experimentally measured coefficient of friction of 0.45 for the contact, calculate
the percentage contribution of adhesive and ploughing components to the total coefficient of
friction.
Transcribed Image Text:A hard metal ball of 10mm diameter is slid across a soft metal surface and produces a groove of 3mm width. The interfacial shear strength is one-tenth of the bulk shear strength of the softer metal. For an experimentally measured coefficient of friction of 0.45 for the contact, calculate the percentage contribution of adhesive and ploughing components to the total coefficient of friction.
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