An Improved Design of the Spiral-Coil EMAT for Enhancing the Signal Amplitude
AbstractThe low energy transition efficiency of electromagnetic ultrasonic transducer (EMAT) is a common problem in practical application. For the purpose of enhancing the amplitude of the received signal, an improved double-coil bulk wave EMAT is proposed for the thickness measurement of metallic block. This new configuration of magnets consists of a solid cylindrical magnet and a ring-shaped magnet encircling the outer side of the solid cylindrical one. A double-coil was applied instead of a single spiral-coil. Numerical simulations were performed to analyze and optimize the proposed configuration of the EMAT by the 2-D axisymmetric finite element model (FEM). The experiment effectively verifies the rationality of the new configuration and the feasibility of improving the signal strength. View Full-Text
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Jia, X.; Ouyang, Q.; Zhang, X. An Improved Design of the Spiral-Coil EMAT for Enhancing the Signal Amplitude. Sensors 2017, 17, 1106.
Jia X, Ouyang Q, Zhang X. An Improved Design of the Spiral-Coil EMAT for Enhancing the Signal Amplitude. Sensors. 2017; 17(5):1106.Chicago/Turabian Style
Jia, Xiaojuan; Ouyang, Qi; Zhang, Xinglan. 2017. "An Improved Design of the Spiral-Coil EMAT for Enhancing the Signal Amplitude." Sensors 17, no. 5: 1106.