Automatic detection of microcracks on the surface of special steel wire based on remanence effect. Issue 2 (4th March 2023)

• Record Type: Journal Article
• Authors: Jiang, Yutong; Yu, Runqiao; Xiong, Lechao; Chen, Tao; Yao, Hui
• Is Part Of: Nondestructive testing and evaluation. Volume 38:Issue 2(2023)
• Page Start: 351
• Page End: 371
• Publication Date: 2023-03-04
• Subjects: Remanence effect -- special steel wire -- remanence detection -- microcracks depth -- microcracks identification; Non-destructive testing -- Periodicals; 620.112705
• DOI: 10.1080/10589759.2022.2127711
• Languages: English
• ISSNs: 1058-9759

Abstract

ABSTRACT: In this study, a remanence detection technology and double-layer sensor crack depth quantitative method for the on-line detection of microcracks on the surface of steel wire using remanence were developed. First, an instrument and a verification experiment were designed. Second, the magnetic signal of the prefabricated crack was analysed, and a defect recognition algorithm was designed. Finally, a detection instrument was applied in the industrial field. The results indicate that the practical application of remanence detection technology is feasible, the recognition algorithm is accurate and reliable, and a minimum crack depth of 0.078 mm can be detected. The magnetic anomaly amplitude difference of the double-layer sensor is positively correlated with the crack depth. The maximum error rate of the quantitative formula for the depth obtained by the fitting method is 10.95%. However, distinguishing the tilt direction of the crack from the shape of the notch remains a challenge for remanence detection technology.