Impacts of the Electromagnetic Loading on the Propagation of the Ultrasonic Wave
Zhang Chuang1, Li Fubiao1, Liu Suzhen1, Cai Zhichao1, Yang Qingxin1, 2
1. Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130 China; 2. Tianjin Key Laboratory of Advanced Technology of Electrical Engineering and Energy Tianjin Polytechnic University Tianjin 300387 China
Abstract In recent years, the detectability of the nonlinear ultrasonic technology on the micro-damage has caused extensive concern. The key problem of the nonlinear ultrasonic technology was how to enhance the nonlinear acoustic response. For this purpose, this paper proposed a new method. The state of the metal closed-crack was changed by the eddy current loading. The ultrasonic had been modulated in the crack area which could produce the nonlinear ultrasonic phenomenon. Through analyzing the loading effects of the eddy current coil on the closed-crack and its dynamic behaviors, the impacts of the electromagnetic (EM) loading parameters on the ultrasonic nonlinear response were discussed. The ultrasonic nonlinear phenomena with the eddy current loading was studied by the modulated ultrasonic echo, and the corresponding relationship between the echo signal and the EM loading is demonstrated. It could provide the theory basis for engineering application of the nonlinear ultrasonic testing method.
Zhang Chuang,Li Fubiao,Liu Suzhen等. Impacts of the Electromagnetic Loading on the Propagation of the Ultrasonic Wave[J]. Transactions of China Electrotechnical Society, 2017, 32(2): 102-107.
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