Using Film Flux Detectors to Determine Properties of Conducting and Magnetic Objects

Abstract

The optical images of magnetic fields recorded with flux detectors are provided as well as the distributions of electric voltage U(t) across an inductive magnetic head as it scans a discrete magnetic carrier that contains recordings of residual magnetic fields resulting from a pulsed magnetic field acting upon the magnetic carrier with a test object. Procedures have been developed that make it possible to measure the distributions of magnetic fields and inspect objects made of conducting or magnetic materials, while enhancing the accuracy of measuring conductivity σ, magnetic permeability μ, the homogeneity of distributions of σ and μ, thickness, and the parameters of solidity flaws in these materials.