title: Magneto-optical visualization of metal-loss defects in a ferromagnetic plate: experimental verification of theoretical modeling.
abstract: Rare-earth iron garnet films with in-plane magnetic anisotropy grown on [111]-oriented substrates are promising for the visualization of magnetic leakage fields in nondestructive evaluation. Such magneto-optical films have to be specifically engineered, and we give an example of this technology. To assess the validity and accuracy of finite-element calculations of a magnetization assembly combined with the physical modeling of the image formation, comparisons between calculated and experimentally obtained magneto-optical images of metal-loss defects have been made. A convincing quantitative agreement is demonstrated. It is shown that both physical and computer modeling techniques allow for a predictive engineering design of the prospective applications and provide greater insight into the method.
authors.affiliation: H. Rosen Engineering GmbH, Lingen (Ems), Germany. MChamonine@Roseninspection.net
authors.forename: M
authors.initials: M
authors.lastname: Shamonin
authors.forename: M
authors.initials: M
authors.lastname: Klank
authors.forename: O
authors.initials: O
authors.lastname: Hagedorn
authors.forename: H
authors.initials: H
authors.lastname: Dötsch