Static and dynamic properties of Terfenol-D/epoxy 1-3 magnetostrictive composites

The microstructure of an epoxy-bonded Terfenol-D 1-3 type composite with 53% particle volume fraction was analyzed.To evaluate static and dynamic properties of the composite and monolithic Tefernol-D,such parameters as static and dynamic magnetostriction,dynamic relative permeability,the dependence of electrical impedance on frequency,two Young's moduli(EH33 and EB33),magnetomechanical coupling coefficient,and characteristic frequency,were tested.The experimental results indicate that both magnetostrictive properties and Young's moduli of the composite are less than those of those of monolithic Terfenol-D,but its characteristic frequency is much higher than that of the later,which suggestes that the composite can provide superior high frequency performance compared with monolithic Terfenol-D.