Journal Published Online: 01 October 1995
Volume 17, Issue 4

Mixed Mode II-Mode III Fracture of Adhesive Joints



This paper presents approximate closed-form expressions for the local energy release rate in Mode I, Mode II, and Mode III along the idealized straight crack front of a cracked generalized adhesive joint. The development is based on beam theory, the J-integral, and a beam-on-an-elastic-foundation model. Fracture experiments were performed with adhesively bonded split-cantilever-beam (SCB) specimens of different adherend widths and thickness ratios using two different adhesives, and it was seen that the fracture surface had a peculiar stepped arrowhead shape. The analysis and the experiments showed that both the energy release rate and the mode mix vary along the crack front of an SCB specimen, making it unsuitable for the determination of fundamental fracture properties. However, the SCB specimen provided a useful means to test an engineering approach to predict the out-of-plane fracture loads of adhesive joints.

Author Information

Fernlund, G
University of Toronto, Toronto, Ontario, Canada
Lanting, H
University of Toronto, Toronto, Ontario, Canada
Spelt, JK
University of Toronto, Toronto, Ontario, Canada
Pages: 14
Price: $25.00
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Stock #: CTR10452J
ISSN: 0884-6804
DOI: 10.1520/CTR10452J