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 ( E₃₃^Hand E₃₃^B),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.