Abstract
Eco-Core is a fire resistant syntactic foam that was developed to be used as a core material for sandwich structures. Core materials are subjected to multiaxial stress state in general and potentially to high strain rates. To evaluate the suitability of Eco-Core for applications involve dynamic effects as for blast mitigation and shock absorption military applications, its energy absorption needed to be evaluated. Also, it needed to be compared with energy absorption of other commercial core materials to determine its reliability. Specimens of 11 mm diameter and 3.2 mm length were prepared using Eco-Core (500 kg/m3), PVC foam (100 kg/m3), Balsa wood (202 kg/m3) and Rohacell-A (75 kg/m3). All specimens were confined with aluminum sleeve of 11 mm inner diameter and 0.9 mm thickness. Confined specimens were tested on Split Hopkinson Pressure Bar (SHPB) apparatus at strain rate ranged from 3120/s to 3490/s. Test results showed that energy absorption per unit volume of Eco-Core (11 MPa) is far superior to other tested commercial core materials (more than twice of Balsa wood the nearest material). The energy absorption per unit mass of Eco-Core (22 kN m/kg) is marginally better than other tested commercial core materials (as good as Balsa wood).
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Kully, R.M. (2016). Dynamic Energy Absorption of Eco-Core and Other Commercial Core Materials. In: Song, B., Lamberson, L., Casem, D., Kimberley, J. (eds) Dynamic Behavior of Materials, Volume 1. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-22452-7_9
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DOI: https://doi.org/10.1007/978-3-319-22452-7_9
Publisher Name: Springer, Cham
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