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A compliant, high failure strain, fibre-reinforced glass-matrix composite

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Abstract

It is demonstrated that a unique form of composite material can be achieved by reinforcing glass matrices with discontinuous graphite fibres. The graphite fibres were utilized in the form of a paper, purchased in large sheets, and composites were formed by hot-pressing glass-powder-impregnated paper plys. The resultant composites exhibit high strength, high fracture toughness (compared to ceramics), low density and low thermal expansion coefficient. Of particular note is the unique tensile stress-strain curve achieved which exhibits both high strength and high failure strain. Its very non-linear shape differs markedly from that of either the unreinforced glass or a similarly reinforced epoxymatrix composite. In addition, the elastic modulus of the resultant composite, despite being reinforced with a high stiffness fibre, is lower than that of the parent matrix resulting in an unusually compliant ceramic material.

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Authors and Affiliations

  1. United Technologies Research Center, 06108, East Hartford, Connecticut, USA

    Karl M. Prewo

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  1. Karl M. Prewo
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Prewo, K.M. A compliant, high failure strain, fibre-reinforced glass-matrix composite. J Mater Sci 17, 3549–3563 (1982). https://doi.org/10.1007/BF00752199

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  • DOI: https://doi.org/10.1007/BF00752199

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