Radius ratio effect on high-strain rate properties of syntactic foam composites
作者： E. Woldesenbet , S. Peter
DOI: 10.1007/S10853-008-3026-Y
关键词:
摘要: The high-strain rate compressive properties of syntactic foams are characterized in this study. This study is performed using a pulse-shaped Split-Hopkinson Pressure Bar technique. Nine different types fabricated with the same matrix resin system but three size microballoons and microballoon volume fractions. have outer radius 40 μm, internal radii leading to difference their densities. fractions maintained at 0.1, 0.3, 0.6. Analysis carried out on effect ratio each fraction properties. approach helpful separating categorizing contribution dynamic foams. results rates compared quasi-static strain material. show that there little or no significant change both strength modulus all ratios when tested 400–500/s rates. However, higher stiffness values obtained consistently 800–1000/s values. It observed does not affect foam significantly fraction. Scanning electron microscopy understand fracture modes
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