“…Since the 1980's, Terfenol-D has been a commercially available material for application in a great many fields. Till now, more than 1000 kinds of different devices have been developed, covering the fields of machine tool industry, electronic industry, oil industry, textile industry, aircraft and aerospace, agriculture as well as civil use [1][2][3][4][5][6][7][8][9]. With the rapid development of the science & technology, this material is becoming more and more important in various fields.…”