Open AccessStructural Health Monitoring for Cables with Insulation Layer by Envelope Analysis Based on Ultrasonic Guided Waves
Author(s) -
Xiao Yang,
Zhigang Qu,
Qiuyu Wang,
Yang An
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1654/1/012096
Subject(s) - ultrasonic sensor , transducer , acoustics , envelope (radar) , layer (electronics) , signal (programming language) , structural health monitoring , materials science , structural engineering , engineering , computer science , composite material , telecommunications , physics , radar , programming language
Cables play an important role in industries and their insulation layer may experience aging problems, which can lead to serious consequences such as fire. Therefore, monitoring the condition of the cable insulation layer can effectively avoid accidents. In this paper, a structural health monitoring method for cables with insulation layer is proposed, which is based on ultrasonic guided waves (UGWs). In the method the UGWs are generated by MFC transducers and do not affect the normal operation of the cables. When UGWs propagating in the cable encounter defects, the reflected signals appear and can be acquired by the measurement system. The signal received by MFC transducers is processed to extract the characteristics. According to the envelope of received signals, it can be judged whether the current cable insulation is defective. In the experiment, cables in different conditions are tested and defects are successfully detected.