internal defects

The essence of electromagnetic methods of nondestructive ferromagnets testing consists in identifying the lines of ledge of the external magnetization constant magnetic field that is scattered on interior and subsurface defects. Existing electromagnetic methods differ only by ways of local magnetic inhomogeneity detections. For detecting the local magnetic field the new variant of the plated sensor for nondestructive testing of ferromagnetic materials in the form of an inductive element on a toroidal core with magnetoconductive elements was proposed.

Magnetic flaw detection is one of the best methods of testing with ferromagnetic properties. It combines high sensitivity and probability of detection of internal and subsurface defects with low cost and ease of implementation. However, there are cases where traditional methods of non-destructive magnetic control is ineffective. Connections of steel structural elements welding method associated with the change of geometric dimensions and shape of the product, and therefore needed to control their use of other methods.