Metal foams are known to exhibit multifunctional behavior. It can offer a unique combination of several properties that cannot be achieved by one conventional material at the same time e.g. ultra-low density, high stiffness and capability to absorb crash energy, and excellent sound absorption properties. These unique combinations of properties indicate its various potential applications such as ultra light structures, in impact/blast absorption systems, and for sound absorption etc. Metal foam is a generic term for a class of material, which can be classified in terms of their structures,...