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A Concept for Experimentally Evaluating the Effect of Friction in the 4-ENF Interlaminar Toughness Test

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Abstract

The 4-point end notched flexure test (4-ENF) has been proposed as a test method for measuring the Mode II interlaminar fracture toughness of laminated composites. However, like other Mode II test methods, there are compressive stresses acting across the delaminated interface and so the test results may be affected by friction. In this paper a strategy for experimentally establishing the significance of friction in the 4-ENF test is proposed and details of the fixture designed to implement this strategy are presented.

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Authors and Affiliations

  1. Department of Aeronautics, Imperial College, London, SW7 2BY, UK

    Paul Robinson

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  1. Paul Robinson
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Robinson, P. A Concept for Experimentally Evaluating the Effect of Friction in the 4-ENF Interlaminar Toughness Test. International Journal of Fracture 110, 37–42 (2001). https://doi.org/10.1023/A:1012269526170

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  • DOI: https://doi.org/10.1023/A:1012269526170

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