Energy Absorption Capacity of A GRFP Composite under Impact of High Velocity Projectiles
Journal: International Journal of Scientific & Technology Research (Vol.3, No. 9)Publication Date: 2014-09-15
Authors : Onyechi; Pius C.; Obuka Nnaemeka; S.P.; Agbo; Cornelius O.; Igwegbe; Chinenye A.;
Page : 1-12
Keywords : Keywords Energy Absorption; GFRP Composite; Ogival and Conical Projectiles; Simpsons 13 Rule; Area under Curve; Ballistic Deformation.;
Abstract
Abstract In this work a glass fibre reinforced composite laminates was developed for amour body application. Six samples of this composite laminates were formed with thicknesses of 28mm Sample E 24mm Sample D 20mm Sample C 16mm Sample B 12mm Sample A and 8mm Sample F. These samples were targeted using two types of life bullets Ogival and Conical nosed moving at a velocity of 355ms. Energy absorption capacity of these composite laminates was determined as a measure of area under the stress-strain curve through the application of the Simpsons 13 rule. Sample E of the GFRP composite gave an optimum absorption energy capacity of 1.956 MJ after ballistic deformation theoretical which is greater than the kinetic energies of the conical projectile 456.676 J and the ogival projectile 348.85 J obtained from experimental analysis energy absorption capacities of Samples A-D were also greater then these values. This indicates the ability of the developed composites Samples A-E to absorb the projectiles kinetic energy without perforation.
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