TY - JOUR
T1 - High precision ultrasonic guided wave technique for inspection of power transmission line
AU - Cheng, Jun
AU - Qiu, Jinhao
AU - Ji, Hongli
AU - Wang, Enrong
AU - Takagi, Toshiyuki
AU - Uchimoto, Tetsuya
N1 - Funding Information:
Supported by National Natural Science Foundation of China(Grant No. 51605229), Natural Science Foundation of Higher Education Institutions of Jiangsu Province, China(Grant No. 16KJB460016), the "333" Project of Jiangsu Province, China(Grant No. BRA2015310), and China Postdoctoral Science Foundation(Grant No. 2016M601844).
Publisher Copyright:
© Chinese Mechanical Engineering Society and Springer-Verlag Berlin Heidelberg 2017
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Due to the merits of high inspection speed and long detecting distance, Ultrasonic Guided Wave(UGW) method has been commonly applied to the on-line maintenance of power transmission line. However, the guided wave propagation in this structure is very complicated, leading to the unfavorable defect localization accuracy. Aiming at this situation, a high precision UGW technique for inspection of local surface defect in power transmission line is proposed. The technique is realized by adopting a novel segmental piezoelectric ring transducer and transducer mounting scheme, combining with the comprehensive characterization of wave propagation and circumferential defect positioning with multiple piezoelectric elements. Firstly, the propagation path of guided waves in the multi-wires of transmission line under the proposed technique condition is investigated experimentally. Next, the wave velocities are calculated by dispersion curves and experiment test respectively, and from comparing of the two results, the guided wave mode propagated in transmission line is confirmed to be F(1,1) mode. Finally, the axial and circumferential positioning of local defective wires in transmission line are both achieved, by using multiple piezoelectric elements to surround the stands and send elastic waves into every single wire. The proposed research can play a role of guiding the development of highly effective UGW method and detecting system for multi-wire transmission line.
AB - Due to the merits of high inspection speed and long detecting distance, Ultrasonic Guided Wave(UGW) method has been commonly applied to the on-line maintenance of power transmission line. However, the guided wave propagation in this structure is very complicated, leading to the unfavorable defect localization accuracy. Aiming at this situation, a high precision UGW technique for inspection of local surface defect in power transmission line is proposed. The technique is realized by adopting a novel segmental piezoelectric ring transducer and transducer mounting scheme, combining with the comprehensive characterization of wave propagation and circumferential defect positioning with multiple piezoelectric elements. Firstly, the propagation path of guided waves in the multi-wires of transmission line under the proposed technique condition is investigated experimentally. Next, the wave velocities are calculated by dispersion curves and experiment test respectively, and from comparing of the two results, the guided wave mode propagated in transmission line is confirmed to be F(1,1) mode. Finally, the axial and circumferential positioning of local defective wires in transmission line are both achieved, by using multiple piezoelectric elements to surround the stands and send elastic waves into every single wire. The proposed research can play a role of guiding the development of highly effective UGW method and detecting system for multi-wire transmission line.
KW - Defect positioning
KW - Piezoelectric transducer
KW - Power transmission line
KW - Ultrasonic guided wave inspection
KW - Wavelet transform
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U2 - 10.3901/CJME.2016.1019.122
DO - 10.3901/CJME.2016.1019.122
M3 - Article
AN - SCOPUS:85011589880
VL - 30
SP - 170
EP - 179
JO - Chinese Journal of Engineering Design
JF - Chinese Journal of Engineering Design
SN - 1000-9345
IS - 1
ER -