Determination of mechanical properties of fibres using projectile impact
article
Because fibre (reinforced) materials are used in armour applications, a better understanding of fibre properties and the behaviour of the fibre subject to projectile impact is required. A dedicated experiment, the single fibre impact experiment, has been developed to determine the tensile modulus of a fibre under high strain rates that occur in armour applications. The experiments turn out to be a flexible means to determine the tensile modulus with a small standard deviation. In addition to this, the failure behaviour of fibres can be determined from these experiments. In this research, aramid fibre and UHMW PE fibre are investigated. The tensile moduli that are determined with the single fibre impact experiment are higher than their static tensile moduli. It is seen from experiments that these moduli are independent of the projectile geometry and mass. However, the failure behaviour of fibres is influenced by the projectile geometry.
Topics
TNO Identifier
881865
Source
International Journal of Impact Engineering, pp. 1-11.
Pages
1-11
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