Elastic stress transfer from fiber to coating in a fiber-coating system
Journal
Materials Science and Engineering A
Journal Volume
117
Journal Issue
C
Pages
115-123
Date Issued
1989
Author(s)
Abstract
Stress analyses are performed for a fiber with a uniform coating in its central portion where the fiber is subjected to an axial tensile stress at each end and the fiber-coating interface experiences a residual clamping stress. The case of a bonded interface was considered previously. An unbonded frictional interface is considered in the present study. The results show that upon tensile loading, sliding begins at the ends of the coating and extends toward the middle of the coating length. The interfacial shear stress increases with the increase in either the clamping stress or the coefficient of friction, and decreases with the increase in the thickness or Young's modulus of the coating, or Poisson's ratio of the fiber. When the interfacial shear stress increases, the stress transfer from the fiber to the coating becomes more effective and the length over which sliding occurs decreases. However, compared to the bonded interface case, the stress transfer is less effective for the frictional interface case. ? 1989.
Type
journal article