SYMPOSIA PAPER Published: 01 January 1989

Mode I and Mode II Delamination of Thermosetting and Thermoplastic Composites


A study of the delamination behavior of three classes of composite material is described: glass/epoxy, graphite/epoxy, and graphite/PEEK (polyetheretherketone). Mode I loading was applied to double cantilever beam (DCB) specimens of two thicknesses, while three different types of mode II specimen were tested: end-notched flexure (ENF), end-notched cantilever beam (ENCB), and cantilever beam enclosed notch (CBEN). The latter was developed specifically for this study and is described in detail. A mixed mode specimen is also described. Results from both static and fatigue tests are discussed in terms of fracture mechanics values.

Author Information

Prel, YJ
Centre National ďEtudes Spatiales, Evry, France
Davies, P
Ecole Polytechnique Fédérale de Lausanne, Switzerland
Benzeggagh, ML
Université de Technologie de Compiègne, Compiègne, France
de Charentenay, FX
Peugeot S.A., Velizy, France
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Developed by Committee: D30
Pages: 251–269
DOI: 10.1520/STP10419S
ISBN-EB: 978-0-8031-5075-1
ISBN-13: 978-0-8031-1190-5