Design of Electromagnetic Ultrasonic Nondestructive Testing System Based on LabVIEW
Liu Suzhen1,2, Rao Nuoxin1,2, Zhang Chuang1,2, Jin Liang3, Yang Qingxin1, 2, 3
1. State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology Tianjin 300130 China; 2. Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province Hebei University of Technology Tianjin 300130 China; 3. Key Laboratory of Advanced Electrical Engineering and Energy Technology Tianjin Polytechnic University Tianjin 300387 China;
Abstract：In the paper, a novel method based on LabVIEW is proposed for the on-line identification of crack to meet the need of intelligent nondestructive testing technology. The features of electromagnetic ultrasonic signal in time domain, frequency domain and time-frequency domain are extracted, while the feature selection is carried out combining the within-class & between-class average distance with sequential forward selection method. Based on support vector machine (SVM), the recognition model about supervised learning and semi supervised learning is constructed. The result shows that S4VM is a safer semi supervised support vector machine. The electromagnetic ultrasonic nondestructive testing system is built and the on-line defect recognition experiment is conducted. Test results show that the system is reliable, and can achieve the visualization, digitization, intellectualization and systematization of the electromagnetic ultrasonic defect recognition.
刘素贞, 饶诺歆, 张闯, 金亮, 杨庆新. 基于LabVIEW的电磁超声无损检测系统的设计[J]. 电工技术学报, 2018, 33(10): 2274-2281.
Liu Suzhen, Rao Nuoxin, Zhang Chuang, Jin Liang, Yang Qingxin. Design of Electromagnetic Ultrasonic Nondestructive Testing System Based on LabVIEW. Transactions of China Electrotechnical Society, 2018, 33(10): 2274-2281.
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2018, Vol. 33 
