A New Method for Detection of Internal Flaws in Ferrodielectrics and Ferroelectrics

摘要

A fundamentally new method for detection of internal flaws in ferrodielectrics and ferroelec-trics is substantiated theoretically and experimentally. Traditional acoustic methods are based on the flaw-surface reflection of acoustic waves that occurs owing to abrupt changes in elastic properties at an interface. In contrast, the generation of acoustic waves that occurs upon incidence of EM waves on the flaw surface and that results from abrupt changes in the magnetoelastic and piezoelectric properties forms the basis of the new method.