Kritische Betrachtungen über die linear-magnetostriktive Ultraschall-Erzeugung mittels tonpilzarliger Schwinggebilde

It is shown that the transverse magnetostrictive effect acts oppressively upon the resulting amplitude of longitudinal magnetostrictive oscillators of the dumb-bell type. With transducers of conventional size using nickel as ferromagnetic material the out-of-resonance amplitude is less than half that value which can be obtained from the magnetostriction curve, the loss of amplitude due to remanence being taken into account.