Engineering Transactions, 61, 4, pp. 289–300, 2013
Mechanical Properties of AW8S-V Polyester Composite under Various Loading Conditions
This article presents the results of an analysis of the mechanical properties of the AW8S-V polyester composite reinforced by a roving fabric under tensile loading. The stress-strain curves show an increase of the maximum stress and elastic modulus with increasing strain rate. By contrast, an increase of the temperature led to decrease of the maximum stress and elastic modulus. It is also shown that, failure mechanisms are dependent on the loading type. Shear cracks occurred in the specimens under quasi-static loading whereas composite layers damage was observed under dynamic loading. Temperature increase resulted to stronger fragmentation of the specimens.
Keywords: polyester composite; Hopkinson bar; high strain rate; damage
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