Magnetic imaging for resistive, capacitive and inductive devices; from theory to piezo actuator failure localization

This paper will detail the possibilities given by the magnetic imaging to observe this kind of defect in conditions where the basic use would normally be unable to, since a capacitive and/or an inductive device would blind it. A test vehicle has been realized in order to evaluate this new use of the magnetic imaging. Finally, a piezo-actuator component is then studied in order to prove the concept.