Derived dynamic ply properties from test data on angle ply laminates

Abstract

Dynamic unidirectional tensile ply properties were extracted from the results of burst tests on angle ply filament wound GRP and KRP tubes under internal hoop loading. The extracted longitudinal and transverse tensile strengths as well as transverse tensile moduli exhibited strainrate sensitivities. Shear properties were derived from test results on 55 ~ and 65 ~ tube angles. Derived shear stress-strain curves and shear strength values are presented at different strain rates; again clearly demonstrating rate effects on these properties. Complete sets of strain rate dependent lamina tensile properties are presented for GRP and KRP covering the strain rate regime of 1 to 10 2 sec -1"

Investigation of the strain rate hardening behaviour of glass fibre reinforced epoxy under blast loading

“…Figure 9 shows the dynamic increase in the tensile and shear strengths with identified parameters (with and without impulse correction) and results from literature. 40–49 These latter are obtained glass fibers, unidirectional (UD) and fabrics, reinforced epoxy using various methods (impact, tensile SHPB, …). It is observed that the identified parameters with the impulse correction are in agreement with the results from literature.…”