An integral armor for Composite Armored Vehicle (CAV) is currently being developed using a low-cost Vacuum Assisted Resin Infusion Molding (VARIM). The integral armor is a multi-component composite panel made of ceramic, rubber, and fiber reinforced composites. In this study, four different materials, namely, S-2 glass/vinyl ester composite, EPDM rubber, AD-90 ceramic, and phenolic composite of the integral armor have been tested under a wide range of strain rates (300-11000 s-1) in a compression Split Hopkinson Pressure Bar (SHPB) equipped with a momentum trapping device. The strain rate effects on the initial modulus, failure stress and failure strain through-the-thickness of the integral armor have been investigated. In the present investigation, the initial moduli of S-2 glass/vinyl ester and phenolic composites were found to be almost constant with the increase in strain rate. The failure stresses of S-2 glass/vinyl ester and phenolic composite have been observed to increase with the strain rate. However, for rubber, the failure stress decreases sharply with the strain rate. While the S-2 glass/vinyl ester shows an increase in failure strain, a decrease in case of phenolic composite and rubber is observed with the increase in strain rate.
High strain rate behavior of the component materials of an integral armor
1997
11 Seiten, 6 Quellen
Conference paper
English
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