An insight of the stress redistribution in fibre filaments of fibre-reinforced composites

What is it about?

This paper provides information on the tensile behaviour of glass fibre filaments in fibre-reinforced composites. Experimental tests comprising a bare glass open-mesh textile and the same textile impregnated with an organic (epoxy resin) and an inorganic (lime-based mortar) matrix were conducted. Extensometer and digital image correlation (DIC) were employed to measure the specimen strain. The results showed that the presence and type of matrix have a strong influence on the maximum stress carried by the textile, whereas the elastic modulus is not significantly affected.

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Why is it important?

The results presented showed that the maximum stress that can be applied to the fibre-reinforced composite depends on the type of matrix employed. Therefore, the composite tensile strength should always be obtained from the composite and not from the bare fibres.