Research on nondestructive testing method of wire rope based on higher-order synchroextracting transform
YUAN Kai
LI Zhinong
ZHANG Xin
LONG Shengrong
LI Zhe
Abstract：[Objective]Electromagnetic testing of wire ropes is often compromised by significant noise interference and the limited accuracy of traditional synchroextracting transforms in estimating instantaneous frequencies under strong noise conditions.[Methods]A signal processing method based on higher-order synchroextracting transform(HSET)was proposed.The signal's amplitude and phase were expanded into high-order Taylor series to derive high-order instantaneous frequencies.By combining these frequencies with a delta function,a higher-order synchroextracting operator was developed to retain critical time-frequency information while eliminating redundant energy,followed by signal reconstruction.[Results]The test results demonstrate that the proposed method effectively reduces spikes and abrupt changes in the detected signal,resulting in a more stable signal profile.Furthermore,it increases signal peaks at singularity points,providing a robust foundation for the quantitative identification of wire rope damage.
Keywords：Wire ropeHigher-order synchroextracting transformTime-frequency analysisNondestructive testingBack propagation neural network
Publication Date：2026-05-31
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：10( 30-39 )