Eddy current: S

Eddy currents , meanwhile, might take a while to build up and only last for a brief time in conductors due to their inductance. History of the Eddy Current François Arago (1786-1853), the 25th Prime Minister of France and a mathematician, physicist, and astronomer, was the first to observe eddy currents . In electromagnetism, an eddy current (also called Foucault's current ) is a loop of electric current induced within conductors by a changing magnetic field in the conductor according to Faraday's law of induction or by the relative motion of a conductor in a magnetic field. Eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field. They can be induced within nearby stationary conductors by a time-varying magnetic field created by an AC electromagnet ... The main properties of eddy currents are; these are only induced within the conducting materials, they are distorted by different defects like corrosion, edges, cracks, etc. So this is used in aerospace, power & petrochemical-based industries for detecting damages & metal cracks. Eddy Current Working Principle The eddy current working principle is to generate eddy currents within a conductive material. So this can be achieved by connecting a coil to an AC generator which drives an ...