The impact toughness of closed-cell aluminum foam with various densities was investigated using Charpy impact. load history revealed an elastic region followed by a rapid drop region. peak and increase exponentially density. power exponents for the test are greater than that compressive test. Fracture analysis indicated mixed-rupture mode quasi-cleavage small shallow dimples. It can be attribut...

Open-­‐cell aluminum foams represent an important class of core materials that are used to manufacture lightweight sandwich-­‐structured composites. A nickel coa9ng applied by electro-­‐deposi9on can further improve their proper9es. In order to characterize these hybrid metal foams, we perform a full resolu9on computa9on of the microstructure. One of the commonly applied methods to obtain the g...

In this paper, we present our recent experimental results on buoyancy-induced convection in aluminum metal foams of different pore densities [corresponding to 5, 10, 20, and 40 pores per in. (PPI)] and porosities (0.89–0.96). The results show that compared to a heated surface, the heat transfer coefficients in these heat sinks are five to six times higher. However, when compared to commercially...

This report contains the results of attempting to improve on the results of Scott R. Sawyer and Alan M. L’Esperance research paper “Investigation of Paraffin Wax as an Energy Storage Medium Within a Shell-and-Tube Heat Exchanger.” The overall goal of the paper mentioned was to investigate the usefulness of wax as an energy storage medium. Scott R. Sawyer and Alan M. L’Esperance determined that ...

A 3D interpenetrating phase composite (IPC) foammade by infusing syntactic foam (SF) into an open-cell aluminum scaffold is studied under high-strain rate conditions. The SF is prepared by dispersing hollow glass microballoons into an epoxy matrix. Dynamic compression characteristics, including strength and failure progression of pure SF and IPC foammade of four different volume fractions ofmic...

In order to reduce both the weight of vehicles and the damage of occupants in a crash event simultaneously, it is necessary to perform a multi-objective optimization of the automotive energy absorbing components. In this paper, axial impact crushing behavior of the aluminum foam-filled thin-walled tubes are studied by the finite element method using commercial software ABAQUS. Comparison of the...

The compressive behavior of open-cell aluminum alloy foam and stainless steel woven textile core materials have been investigated at three different deformation rate regimes. Quasi-static compressive tests were performed using a miniature loading frame, intermediate rates were achieved using a stored energy Kolsky bar, and high strain rate tests were performed using a light gas gun. In agreemen...