マイクロ鈴構造Al合金の振動特性

抄録

The aim of this study is to fabricate micro bell-shape Al alloy which have micro order bell-shape pore in its body, and investigate its vibration characteristic by sound absorption test and damping test. First, the aggregates consisting of glass capsules and zirconia particles were fabricated by rolling granulation method. Second, micro bell-shape Al alloys were fabricated using the aggregates and Al alloy powder by original method. Also, porous Al alloy and Al alloy without pores were fabricated. Third, their vibration characteristics were investigated by sound absorption test and damping test. As a result, micro bell-shape Al alloy presented significant absorption characteristic for sound absorption test. Furthermore, it was seen that the bell-shape structure gap enable us to control absorption characteristics.