Frequency Response of Sandwich Beam Embedded with Shape Memory Alloy Wires

Experimental investigation of the dynamic behavior of sandwich beam and an embedded with shape memory alloy (SMA) wires are deliberated. In this study wires composition of Ni 56.2% remaining Ti were used for vibration control. These wires were inserted in sandwich beam with its neutral axis. The wires are embedded along a length of beam and beam is sandwiched between two copper plates. The beam is tested for free boundary condition and observed natural frequency when the stiffness of beam is changed by actuating the wire with electric current. This paper depicts the frequency response of beam due to embedded SMA wires. Effect of SMA wires on natural frequency and damping factor are examined. The maximum frequency is obtained at 1.5 amps after that frequency continuously decreases because of increase in temperature of the beam.