A Study of the Frequency Characteristics of Low-frequency Eddy Current Detection for a Vibrating Screen Beam with a Cladding Layer
Fu Sheng, Xu Xiao-Dong, Liu Yi, Xu Yong-Gang, Chen Tao
Current Journal of Applied Science and Technology · pp. 1–14 · Published 16 Nov 2015
10.9734/BJAST/2016/21871Abstract
A low-frequency eddy current detection method to detect cracks in a vibrating screen beam equipped with a cladding layer is proposed in this paper. The simulation research shows that the optimal detection frequency is from 10 Hz to 100 Hz. The experimental study determined the relationship between the testing frequency for different sizes of cracks and the amplitude and phase beneath a 7-mm-thick cladding layer. Finally, the optimum detection frequency has been determined to be from 150 Hz to 200 Hz using phase identification and has been determined to be from 300 Hz to 400 Hz using the magnitude.
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