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A buckled plate test to measure interfacial toughness in composites

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Abstract

A new, buckled plate (BP) test has been used to measure transverse toughness as the parameter characterizing interfacial adhesion in unidirectional, continuous-fibre composites. The test is simple, with advantages over other interfacial methods. The theory and experimental details are presented. The results of BP tests are discussed for polycarbonate/carbon fibre composites. Evaluations have been made with regard to specimen dimensions, testing speed, crack length, modulus, fibre volume fraction, and processing conditions. Transverse toughness is a sensitive measure of the interfacial adhesion, giving results similar to transverse tensile strength. The test has also been used to measure longitudinal toughness. This test should be widely applicable to many composite systems.

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Authors and Affiliations

  1. Polymer Science and Engineering Department, University of Massachusetts, 01003, Amherst, Massachusetts, USA

    R. L. Brady, Roger S. Porter & J. A. Donovan

  2. Mechanical Engineering Department, University of Massachusetts, 01003, Amherst, Massachusetts, USA

    J. A. Donovan

Authors
  1. R. L. Brady
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  2. Roger S. Porter
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  3. J. A. Donovan
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Brady, R.L., Porter, R.S. & Donovan, J.A. A buckled plate test to measure interfacial toughness in composites. J Mater Sci 24, 4138–4143 (1989). https://doi.org/10.1007/BF01168986

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  • DOI: https://doi.org/10.1007/BF01168986

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