Design And Optimization Of Pipeline Ultrasonic Guided Wave High Performance Sensor

Pipeline transportation plays an important role in national economic and social development.However,in the long-term service of the pipeline,different degrees of defects will occur due to various reasons.Serious defects can cause serious consequences for leaks in the pipeline.Therefore,it is important to detect pipeline defects quickly and efficiently.Compared with the traditional detection technology,the ultrasonic guided wave detection technology has many advantages,such as long detection distance,short detection time and high detection efficiency.Ultrasonic guided wave detection technology has great advantages,and more and more experts and scholars use ultrasonic guided wave detection technology for pipeline detection research.One of the most important components of the ultrasonic guided wave detection piping system is the sensor.The excellent performance of the sensor is the basis for the successful detection of pipeline defects.Therefore,research on the internal components of the sensor and improve the performance of the sensor are of great significance for improving the ultrasonic guided wave detection efficiency and detection accuracy.The core component of the sensor is giant magnetostrictive materials or piezoelectric materials.Due to the larger electromechanical coupling coefficient and higher energy conversion efficiency of magnetostrictive materials,this paper mainly designs a new structure of giant magnetostrictive sensor,and determines the size of the core component of the new structure giant magnetostrictive sensor.The influence of the internal component structure parameters of the giant magnetostrictive sensor on the amplitude of the defect echo received by the sensor was analyzed.After analyzing the test results and optimizing their parameters,the optimal values of the core component parameters were finally determined.Then,the test verifies the correctness of the structural design and parameter optimization results.The sensor was packaged to verify the excitation and reception performance of the new structure sensor by comparing it to the performance of a conventional piezoceramic sensor.The main research content of this paper:An ultrasonic guided wave detection pipeline test system was established.Based on the basic theory of ultrasonic guided wave detection,the performance evaluation parameters of the giant magnetostrictive guided wave sensor were established.The size of the vibration component of the new giant magnetostrictive sensor was numerically simulated by ANSYS software,and the influence of the size of the groove structure on the performance of the sensor was studied by experiments.The effects of the driving magnetic field and the bias magnetic field on the performance of the sensor were studied by experiments.Finally,according to the test results,the defect echo amplitude was selected as a response to optimize the sensor design parameters.Finally,the number of turns of the alternating coil,the wire diameter,the arrangement of the permanent magnets,and the number of permanent magnets were selected parameters.The performance of the giant magnetostrictive sensor was verified by testing artificially simulated defects on the pipe and compared with conventional piezoelectric ceramic sensors.The performance of the new structure of the giant magnetostrictive sensor is superior to that of the conventional piezoelectric ceramic sensor.