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Fracture resistance of a glass-fibre reinforced rubber-modified thermoplastic hybrid composite

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Abstract

Toughening mechanisms in a hybrid amorphous thermoplastic composite containing both distributed rubber particles and rigid glass fibres have been investigated. Tensile properties were measured for a range of materials with varying rubber particle and glass-fibre contents, and different rubber particle sizes. Fracture toughness was characterized by separating the overall fracture into its initiation and propagation components. Deformation and fracture modes at crack tips were optically characterizedin situ during loading. The results indicate that both initiation and propagation toughness are enhanced by rubber particle additions to the glass-fibre reinforced composite. Synergistic effects between glass fibres and rubber particles are identified: for example, glass fibres inhibit crazing at rubber particles, and rubber particles tend to promote crazing at fibre/matrix interfaces and also void initiation at fibre ends. Toughening mechanisms are discussed in the light of available models.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Massachusetts, 01002, Amherst, MA, USA

    S. V. Nair & M. L. Shiao

  2. Monsanto Chemical Co., 730 Worcester Street, 01151, Springfield, MA, USA

    P. D. Garrett

Authors
  1. S. V. Nair
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  2. M. L. Shiao
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  3. P. D. Garrett
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Nair, S.V., Shiao, M.L. & Garrett, P.D. Fracture resistance of a glass-fibre reinforced rubber-modified thermoplastic hybrid composite. J Mater Sci 27, 1085–1100 (1992). https://doi.org/10.1007/BF01197664

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  • DOI: https://doi.org/10.1007/BF01197664

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