Advances in magnetoresistive type sensors provide a new technique for nondestructive evaluation of metal structures. Giant magnetoresistive and magnetoimpedance sensors provide high sensitivity and reduced size with GMI sensors, also adding a capability of high frequency range of measuremenst. such sensores are produce with thin fil technology, so the manufacturing cost of such sensors is very low. An example is considered of detecting defects in printed circuit boards. system details aand experiemental results are provided. Computational modeling validation is introduced based on finite element as well as method of moment |
