Energy absorption behavior of closed-cell aluminium foam under drop mass impact tests

Fujun Yang; Siyuan Ni; Xiaoyuan He; Deping He

doi:10.1117/12.839373

25 August 2009 Energy absorption behavior of closed-cell aluminium foam under drop mass impact tests

Fujun Yang, Siyuan Ni, Xiaoyuan He, Deping He

Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 73756A (2009) https://doi.org/10.1117/12.839373
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China

Abstract

Quasi-static axial compression and drop mass impact tests were performed to study the energy absorption behaviour of the closed-cell aluminium foam. Digital image analysis was firstly used to characterize the surface's structure of individual cells and aggregates of cells. The cell structure characterizations performed using the best-fit ellipse equivalent diameter for the individual cells, which included measurement of the size distribution of cells, cell's aspect ratio and orientation. It shows that the statistical distribution of cells' size and cell's aspect ratio well follow Gauss distributions. The energy absorption behavior of the high porosities aluminium foam under static and drop weight impact compression were then conducted. High-speed imaging technique and temporal digital image correlation method were employed to evaluate the deformation and acceleration in the compression experiments. Using these approaches, the deformation and energy absorption mechanism of Al foam due to drop impact can be observed and better understood. The experimental results show that aluminium foams are quite close to a kind of isotropic structure and have high energy absorption capabilities.

Citation Download Citation

Fujun Yang, Siyuan Ni, Xiaoyuan He, and Deping He "Energy absorption behavior of closed-cell aluminium foam under drop mass impact tests", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73756A (25 August 2009); https://doi.org/10.1117/12.839373

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