Inspection of Internal Impairments of Steel Wire Rope by Electromagnetic Detecting Method

Abstract

In this paper, to contribute to the development and the practice of the electromagnetic inspection of the internal impairments of steel wire ropes, the method which was employed in this study and the results of some fundamental experiments are stated. The outline of some field inspections which were carried out with the trial equipment are shown, and the result of the visual inspection obtained by breaking up an actual rope and the electromagnetic inspection record of the identical part are correlated and discussed. Further, the procedure of estimation of present strength of a wire rope by electromagnetic inspection are stated. Taking this procedure, we can estimate the present strength with reasonable high accuracy, and it has been recognized that the electromagnetic inspection is an effective method for the good maintenance of steel wire ropes.