Residual magnetic field as a source of information about steel wire rope technical condition

Abstract

Research has been undertaken to analyze the possibilities of using the residual magnetic field, as a result of local changes in the electromagnetic properties of the rope material, for identification of steel wire rope technical condition. Under the influence of cyclically changing workloads, due to the effects of magnetomechanics, changes in electromagnetic properties occur both in the wires and in the entire rope. The article presents the use of magnetic sensors to determine the relationship between the number of steel wire rope bends and its magnetic field induction value. This knowledge, referred to as ropes working on real objects, allows us to determine the state of stress prevailing in them as well as their technical condition.

Keywords

• non-destructive testing
• residual magnetic field
• steel wire rope