Ab. Rinkevich et al., GROUP-VELOCITY OF ULTRASOUND IN TRANSVERSELY ISOTROPIC MEDIA, Russian journal of nondestructive testing, 30(2), 1994, pp. 127-132
The article presents formulas for calculating the group velocity of ul
trasound in a special kind of transversely isotropic medium modeling t
he austentic-ferritic material of welding seams. It contains the deter
mination of the addition to the components of the group velocity arisi
ng on account of the magnetization of the medium. The article shows th
at magnetization can change the angle between the vectors of group and
phase velocities.