INVERSE ANALYSIS TO DETERMINE INTERFACIAL PROPERTIES BETWEEN METAL FILM AND CERAMIC SUBSTRATE WITH AN ADHESIVE LAYER

The interfacial mechanical parameters for the Al film/ceramic system at an epoxy interface layer between film and ceramic are determined by peel test measurements and inverse analysis. In the present investigation, Al films with a series of thicknesses between 20 and 250 microns and three peel angles of 90, 135 and 180 degrees are considered. A finite element model (FEM) with the cohesive zone elements is used to simulate the peel test. The FEM results are taken as the training data of a neural network in the inverse analysis. The interfacial cohesive energy and the separation strength can be determined based on the inverse analysis and peel experimental results.