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Experimental study of foam filled aluminum columns under axial impact loading

Gunawan L., Jusuf A., Dirgantara T., Putra I. S.

Journal of KONES

2013

Vol. 20, No. 2

149--157

The work presented in this paper is the experimental study of square aluminum columns under dynamic axial impact loading. The objective of the study is to evaluate the effect of foam filling to the crushing behaviour of the columns. Four columns were tested, i.e. a single walled column, a single walled column filled with aluminum foam, a double walled column, and a double walled column filled with foam. The single walled column was 55 mm wide and 1.3 mm thick. The double walled column was prepared by inserting a square column of 38 mm wide and 1.15 mm thick inside the single walled column. The column was made of aluminum extruded alloy AA 6063 T1, and the insert material was the closed cell aluminum foam (ALPORAS) with density of 440 kg/m3. The tests were carried out using a dropped weight impact testing machine that had been built specifically for this purpose. The results showed that filling the aluminum foam to the columns increase their crushing resistance force, where the increase is of the singlewalled column is higher than that of the double-walled column. Filling the foam to the columns reduce the high crushing force peak for both columns as well. This experimental results confirm results of other researcher.