漏洩磁束探傷法によるワイヤロープの素線切れの評価手法の検討

抄録

Inspection using magnetic sensors based on the magnetic flux leakage testing method as soundness evaluation of wire ropes is being performed. Recently, it has been studied as detailed soundness evaluation method of the wire rope by analyzing the measurement data of multi magnetic sensors as an image grayscale. However, this is the position identification of breakages rope axis direction. For this reason, if it is not the position identification of breakages on the rope circumferential direction, it is difficult to determine soundness evaluation of wire ropes. In this study, there are three characteristics (types (crown and valley), number of wire breakages, the distance between detection plane and wire rope surface) of the breakage. In this paper, the magnetic flux density of the wire rope caused by the number of breakages is examined using numerical analysis.