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The fracture energy and acoustic emission of a boron-epoxy composite

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Abstract

The fracture surface energy (γ) of a boron fibre-epoxy resin composite has been measured by three different techniques: work of fracture, linear elastic fracture mechanics, and compliance variation. Significant differences were obtained by the different methods. The compliance data were analysed to giveγ at different stages of crack propagation. It was observed thatγ decreased as the crack entered the material and that this variation ofγ could be correlated with the pull-out length of fibres and acoustic emission generated during fracture. The fracture surface energy is explained in terms of a debonding model.

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Author notes

  1. D. C. Phillips

    Present address: Materials Development Division, AERE, Harwell, Berks, UK

Authors and Affiliations

  1. Materials Department, School of Engineering and Applied Science, University of California, Los Angeles, California, USA

    J. Fitz-Randolph, D. C. Phillips, P. W. R. Beaumont & A. S. Tetelman

Authors
  1. J. Fitz-Randolph
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  2. D. C. Phillips
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  3. P. W. R. Beaumont
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  4. A. S. Tetelman
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Fitz-Randolph, J., Phillips, D.C., Beaumont, P.W.R. et al. The fracture energy and acoustic emission of a boron-epoxy composite. J Mater Sci 7, 289–294 (1972). https://doi.org/10.1007/BF00555629

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  • DOI: https://doi.org/10.1007/BF00555629

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