Abstract
In this work, the stresses caused by an elastic sphere indenting double layered coating on an elastic-work hardening substrate with a relatively low elastic modulus regime have been examined. An axisymmetric finite element mesh was set up for the stress analysis. The contact stress arising on the free surface, the stresses at both interface sides of the first and second coating layers and at the symmetry axis, and the stresses within the coating layers have been examined depending on the first coating layer (interlayer) thickness using ANSYS. It was obtained that the thickness of the first coating layer affected considerably the stresses formed at the contact surface, the interfaces, the symmetry axis and within the coating layers.