Volume 9, Issue 3, 2000

Characterisation of the Interfacial Bond Strength Between Glass Fibre and Epoxy Resin Using The Pull-Out Techniques

E. Mader1*, X.-F. Zhou2, E. Pisanova1, S. Zhandarov1 and S. R. Nutt2

1Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany

2 Center for Composite Materials, University of Southern California, Los Angeles, CA 90089-0241.

*Author to whom correspondence should be addressed.

(Received 2/00 ; Accepted 4/00)

ABSTRACT

Interfacial bond strength between epoxy resin and glass fibre was studied using the pull-out and push-out techniques. For untreated fibres, these micromechanical tests gave similar values of the local interfacial shear strength and critical energy release rate. In the case of fibres treated by g-APS, both tests showed considerable increase in the bond strength. However, for the modified fibres, the pull-out test gave greater values of both interfacial parameters than the push-out test, a result attributed to the different modes of interfacial loading. The different loading patterns also cause different failure mechanisms in these two tests.

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