Research on Pipeline Crack Detection Based on Microwave Circular Antenna Arrays
QIU Guo-hua1,2,TIAN Shan-shan1,2,YUAN Qin-wen1,2
1. Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province,Hangzhou,Zhejiang 310018,China
2. College of Information Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China
Abstract：A fast nondestructive testing method based on microwave circular antenna arrays has been proposed. It is used to detect longitudinal and transverse joints of pipes. The inner diameter of the pipe used in the experiment was 5.4cm and 8cm respectively. Firstly, the HFSS simulation software is used for simulation to determine the single-mode transmission of microwaves in TE11 mode. Thereafter, the experimental systems were built, the antenna arrays transmit the signal generated by the vector network analyzer into the pipeline, and the antenna arrays receive the reflected wave from the detection pipeline and turn to the vector network analyzer. Pipes with two diameters were detected by different circular antenna arrays. The results indicate that an array of two antenna arrays can detect cracks in pipes with a inner diameter of 5.4cm, and six antenna arrays can clearly detect cracks in pipes with a inner diameter of 8cm. The detection effect of the antenna array is better than that of single-rod antenna. It is a useful exploration for the antenna array to detect pipeline cracks.
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2023, Vol. 44 
