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Crack resistance curve in glass matrix composite reinforced by long Nicalon® fibres

  • Rees Rawlings Festschrift
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Abstract

Theoretical micromechanical analysis of bridged crack development at chevron-notch tip of three-point bend specimens has been applied to determine the crack resistance curve for a composite made of a glass matrix reinforced by continuous Nicalon® fibres. Fracture toughness (KIC) values were determined using the chevron-notch technique at room temperature. The theoretical predictions were based on micromechanical analysis exploiting weight functions. Detailed FEM analysis using the ANSYS package was applied to determine numerically the weight functions for orthotropic materials. Appropriate bridging models for the theoretical prediction of the R-curve behaviour typical of the investigated composite were applied together with the weight functions. Experimental observations confirmed the theoretical calculations.

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Acknowledgements

The research was supported by the Czech Science Foundation under grant numbers 106/05/0495 and 106/06/0724 is gratefully acknowledged.

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Authors and Affiliations

  1. Institute of Physics of Materials, ASCR, Zizkova 22, 61662, Brno, Czech Republic

    Ivo Dlouhy & Zdenek Chlup

  2. Department of Solid Mechanics, Brno University of Technology, Technicka 2, 616 69, Brno, Czech Republic

    Michal Kotoul

  3. Jan E. Purkyne University, Na okraji 1001, 400 96, Usti nad Labem, Czech Republic

    Tomas Vyslouzil

  4. Department of Materials, Imperial College London, London, SW7 2BP, UK

    Aldo R. Boccaccini

Authors
  1. Ivo Dlouhy
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  2. Michal Kotoul
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  3. Tomas Vyslouzil
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  4. Zdenek Chlup
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  5. Aldo R. Boccaccini
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Correspondence to Ivo Dlouhy.

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Dlouhy, I., Kotoul, M., Vyslouzil, T. et al. Crack resistance curve in glass matrix composite reinforced by long Nicalon® fibres. J Mater Sci 43, 4022–4030 (2008). https://doi.org/10.1007/s10853-007-2317-z

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  • DOI: https://doi.org/10.1007/s10853-007-2317-z

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