Abstract
The effective wear behavior of enamel is investigated by considering the microstructure of enamel and the wear properties of the rod and interrod phases forming it. This investigation is guided by a recently proposed micromechanics theory of wear and realized by using the finite element method. A representative surface element is determined for the unilateral frictional contact with wear between enamel and a ball assimilated to food. Accounting for the elastic properties and wear characteristics of the rod and interrod phase, using different friction coefficients and considering sliding directions, the effective (or overall) wear coefficient of enamel is quantitatively determined for different inclination angles of the rod phase. The results of the present work suggests the existence of an optimal inclination angle of the rod phase for reducing the effective wear of enamel, which can be inspiring for optimizing the fiber orientation for a better wear-resistant fiber-reinforced composites.
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