Abstract
The relevant Fracture mechanics parameter for representing the crack extension driving force of interface fatigue cracks has been studied both analytically and experimentally. Using the oscillatory stress singularities for open-tip interface cracks, an equivalent stress intensity range, defined in terms of the y-integral and evaluated on the basis of the applied loads, is proposed and shown to correlate fatigue crack growth data of interface cracks in fiber-reinforced composites. Two complimentary procedures for determining the local ΔK of interface fatigue cracks using experimental crack opening displacements data are presented. Differences between the local and global ΔKare thought to be due to residual stresses which originated during fabrication.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call