1Department of Mining Machinery Engineering, Indian School of Mines, Dhanbad, Jharkhand 826004, India
2Advanced Materials and Processes Research Institute, Bhopal, Madhya Pradesh 462026, India
Adv. Mater. Lett., 2015, 6 (6), pp 548-553
Publication Date (Web): May 28, 2015
Copyright © IAAM-VBRI Press
Aluminium foam is an isotropic porous metal of cellular structure in the order of 75-80 vol. % of the pores. In turn the novel mechanical, physical and chemical composition, properties depends on the density of foam, i.e. lies in between 0.4-2.4 g/cm3. Aluminium foam filled structures are used in collide, energy absorption, sound absorbing and vibration damping applications. In this article the compressive deformation behaviour of rectangular, square and round aluminium foam (LM 25 + 10wt% SiCp) filled and empty mild steel samples respectively are analyzed to identify the more energy absorption rate per unit volume in diverse strain rate by means of the compressive testing at room temperature. The experiments were performed on a universal testing machine the results showed that the round cross-section had more energy absorption than the rectangular and square cross section respectively. Also the amount of energy absorption will be greater with low foam density for round section tubes. We have seen that an increasing interest in using aluminium foams as inside the thin-wall mild steel tubes for maximum specific energy absorption rate. This work shows the admirable capability of aluminium alloy foam in applications in which it is essential to absorb compression energy.
Aluminium foam, energy absorption, mild steel tube, compression test, SEM.