Patent ID: 8542127
Filing Date: 2013-09-24
Classification: G01N

Abstract:
1. A device for discovering, identification and monitoring of mechanical defects in metallic structures, comprising: a sensor array, registering a signal, a signal representing a density of magnetic field strength distribution along the metallic structure under testing; an analogue-to-digital converter digitizing the signal; a calculation unit receiving the digitized signal, the calculation unit analyzing the digitized signal and providing an identification of signal anomalies using a magnetic tomography method that is based on the inverse magnetostrictive Villary effect, the effect of changing of material magnetic susceptibility under applied mechanical stress, the changing of magnetic susceptibility resulting in distribution of magnetic field gradient along the structure surface area under testing, the distribution of magnetic field gradient providing an information about the presence and the value of the magnetic field anomaly at the given location of the structure.