A cylindrical bronze pin rests on a rotating alumina disk at a mean radius of 10 mm. The normal load on the pin is 20 N. The disk's rotational speed is 500 rpm, and the test lasts 5 hours. The pin and disk mass losses are 60 mg and 0 mg (i.e., assuming no mass loss on the alumina disc). Using the material data given below, calculate the wear coefficients for the bronze pin. (Hardness of bronze = 1 GPa, density of bronze = 8.5 Mg/m3; density of alumina = 3.95 Mg/m3).

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A cylindrical bronze pin rests on a rotating alumina disk at a mean radius of 10 mm. The normal load on the pin is 20 N. The disk's rotational speed is 500 rpm, and the test lasts 5 hours. The pin and disk mass losses are 60 mg and 0 mg (i.e., assuming no mass loss on the alumina disc). Using the material data given below, calculate the wear coefficients for the bronze pin. (Hardness of bronze = 1 GPa, density of bronze = 8.5 Mg/m3; density of alumina = 3.95 Mg/m3).
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