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|Title:||An empirical strain rate-dependent constitutive relationship for glass-fibre reinforced epoxy and pure epoxy|
|Authors:||Tay, T.E. |
|Citation:||Tay, T.E.,Ang, H.G.,Shim, V.P.W. (1995). An empirical strain rate-dependent constitutive relationship for glass-fibre reinforced epoxy and pure epoxy. Composite Structures 33 (4) : 201-210. ScholarBank@NUS Repository.|
|Abstract:||An investigation into the effect of strain rate on glass-fibre reinforced plastic (GFRP) and pure epoxy subjected to compressive loading has been conducted. Experimental results in this study were obtained by a hydraulically driven Instron Testing machine and a Split-Hopkinson Pressure Bar. The range of strain rates explored was between 5 × 10-4 sand 2500 s. A comparison between the behaviour of pure epoxy and GFRP reveals that both are strain rate sensitive, especially in the low strain rate regime. There is also a significant increase in the dynamic modulus as strain rate increases. It is shown that the stress-strain response under dynamic loading is not only a function of strain rate, but also of the strain state. An empirical equation incorporating both strain and strain rate terms is proposed and is found to adequately describe the stress-strain behaviour of both GFRP and pure epoxy for the range of loading rates studied. © 1995.|
|Source Title:||Composite Structures|
|Appears in Collections:||Staff Publications|
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