Materials Reports  2022, Vol. 36 Issue (Z1): 22030019-6 |
| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Research on Power Clamp Detection Technology Based on Phased Array Ultrasound |
| YU Chao1, JI Changguo1, ZHANG Pengkun1, WANG Kai2, WANG Jing3, LIU Chang3
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1 North China Electric Power Research Institute Co., Ltd., Beijing 100045, China
2 State Grid Shandong Electric Power Company, Jinan 250000, China
3 Beijing Huake Tonghe Technology Co., Ltd., Beijing 100045, China |
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Abstract The crimping quality of the power cable clamp was tested by using phased array ultrasonic testing(PAUT). In this work, CIVA software is used to carry out phased array ultrasonic simulation research on power clip samples with different crimping quality. The simulation results show that as the indentation depth decreases, the width of the reflecting surface increases, the spacing decreases, and the reflected signal increases gradually. If a wire is not pressed in, the reflection amplitude of the leakage pressure is equivalent to the sound pressure of the large flat bottom echo in the regular reflector, and the echo law of the undervoltage defect is similar to the echo sound pressure law of the long transverse hole in the regular reflector. In addition, the phased array ultrasonic typical patterns of normal wire clips and defective wire clips were obtained through the PAUT experiment, indicating that the PAUT can intuitively detect the leakage pressure and undervoltage of the wire clips. The anatomical cross-sectional structure of the wire clip is consistent with the signal characteristics of the simulation and phased array detection map, which further verifies the validity and accuracy of the phased array detection of crimping quality, and provides a certain reference value for its large-scale engineering applications.
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Published: 05 June 2022
Online: 2022-06-08
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| Fund:Self-Funded Technology Project of North China Electric Power Research Institute Co., Ltd.(KJZ2020076). |
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