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Properties of Weft Knitted Composites Affected by Preform Stretching

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Abstract

The influence of preform stretching on mechanical properties of weft knitted PP/glass fibre composites was estimated. Stretching of Rib 1:1 weft knitted fabric was performed prior to consolidation in a wale or course direction and biaxially. Preform stretching increased tensile and bending strength of composite as a result of additional orientation of the reinforcing fibres in the stretching direction. Stretching in a wale direction was shown to be most effective due to the specific inherent structure of Rib 1:1 fabric. The impact toughness of composites was not significantly changed as a result of decreased preform elasticity in the direction of stretching.

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Authors and Affiliations

  1. Faculty of Technology and Metallurgy, University St. Cyril and Methodius, Rudjer Boskovic 16, 91000, Skopje, Macedonia

    Goran Demboski & Gordana Bogoeva-Gaceva

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  1. Goran Demboski
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  2. Gordana Bogoeva-Gaceva
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Demboski, G., Bogoeva-Gaceva, G. Properties of Weft Knitted Composites Affected by Preform Stretching. Applied Composite Materials 8, 371–384 (2001). https://doi.org/10.1023/A:1012603500481

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