Ductile woven silk fibre thermoplastic composites with quasi-isotropic strength

Journal article (2021)

Authors

Aart Willem Van Vuure Katholieke Universiteit Leuven
Jan Vanderbeke Katholieke Universiteit Leuven
Yasmine Mosleh Structural Integrity & Composites - Aerospace Engineering
Ignaas Verpoest Katholieke Universiteit Leuven
Nedda El-Asmar Nedda El-Asmar
Research Group
Structural Integrity & Composites (Aerospace Engineering) (TU Delft)
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Published Date

2021

Language

English

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Faculty

Aerospace Engineering

Department

Aerospace Structures & Materials

Research Group

Structural Integrity & Composites

Abstract

The combination of ductile Bombyx Mori silk fibre with ductile thermoplastic matrices, combined with the use of a woven fibre architecture, leads to ductile composites with quasi-isotropic strength. Bending and tensile properties were determined for (0,90)s silk twill weave composites, with different thermoplastic polymers and as reference epoxy resin. Thermoplastic (0,90)s woven silk fibre composites are isotropic in strength (about 135 MPa at 50% fibre volume fraction) due to the high elongation to failure of both the silk fibre and the thermoplastic matrix allowing extensive shearing of the silk fabric when loaded in the 45° direction. A good quality interface has a clear positive influence on the mechanical properties especially on the bending yield strength.

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