The Rate Sensitivity of High Strength Syntactic Foam
RHODE ISLAND UNIV KINGSTON DEPT OF MECHANICAL ENGINEERING AND APPLIED MECHANICS
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A series of dynamic experiments was performed on high crush strength syntactic foam to characterize how rate affects the compressive and tensile properties of the material. The Investigation was carried out as part of a larger effort to develop a rate sensitive material model for sandwich composites with syntactic foam cores. Both the compressive and tensile experiments were performed on the compressive split Hopkinson pressure bar. The tensile experiments were conducted using an indirect tensile splitting or Brazilian, test arrangement. Quasi-static experiments were also conducted in compression, tension, and shear. A comparison of the quasi-static and dynamic properties showed that syntactic foam is mildly dependent on rate in compression but unaffected by rate in tension. The shear experiments showed that bond between a syntactic foam core and composite face sheets could be a weak link in a sandwich design. The syntactic foam, Eccofloat-TG-24A, was manufactured by Emerson Cuming.
- Laminates and Composite Materials