Impact perforation testing of stab-resistant armour materials

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dc.contributor.author Horsfall, Ian -
dc.contributor.author Pollitt, S. M. -
dc.contributor.author Belk, J. A. -
dc.contributor.author Angood, C. -
dc.contributor.editor Williams, J.G. -
dc.contributor.editor Pavan, A. -
dc.date.accessioned 2014-10-04T04:01:01Z
dc.date.available 2014-10-04T04:01:01Z
dc.date.issued 1995-12-31T00:00:00Z -
dc.identifier.isbn 978-0-85298-946-3 -
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/8735
dc.description.abstract This paper describes the development of a method for the investigation and comparison of materials for use in stab resistant body armour. A number of polymer composite panels of different thicknesses and construction have been tested. A dynamic test which simulated the real threat has been used and the results compared to a simpler quasi-static test that might be used in initial materials selection. The materials tested were glass-epoxy, and glass-nylon composite panels of several thicknesses between 1.8 and 5.8mm. Additional tests were also performed on similar composites containing tungsten wires. An accelerated instrumented drop-tower was used to drive a knife through composite panels and record the force resisting penetration by the knife. The final penetration of the knife through the armour into a soft backing was also measured. For comparison,a similar geometry quasi-static test was carried out on the same specimens. It was found that energy absorbtion took the form of an initial resistance to perforation and then by a resistance to further penetration. This is thought to stem from resistance to cutting ofthe panel material and gripping of the knife blade. The energy required to produce a given penetration in dynamic tests was found to be in good agreement with the penetration achieved at similar energies under quasi-static conditions. For the materials tested there was no significant difference between the penetration resistance of single or two layer systems. The penetration achieved through a panel of a given material was approximately proportional to the inverse square of the panel's thickness. The relative performance of different armour materials was assessed by plotting the energy required to penetrate a fixed distance against the areal density of the panel. en_UK
dc.language.iso en_UK -
dc.title Impact perforation testing of stab-resistant armour materials en_UK
dc.type Conference paper -


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