CALCULATION METHODS IN MAGNETOACOUSTIC OBSERVATION OF STRUCTURE

We consider magnetoacoustic effects from the standpoint of their possi ble application in nondestructive ultrasonic inspection of the structu re of a material. We pay special attention to magnetoacoustic effects in wave polarization. Based on the relation between elastic and magnet ic parameters of materials, we determine the structure-sensitive param eters. We discuss in detail the magnetoacoustic properties of material s modeled by a transversely isotropic medium such as austenitic-ferrit ic steels and the material of a weld seam, and some types of composite s. We briefly consider the application of magnetoacoustic methods for inspection of composite materials with a helicoidal magnetic structure . We consider methods for measuring the polarization of ultrasound as applied to nondestructive inspection. This work is based on a theoreti cal concept developed fry K. B. Vlasov in [1].