Title :
Analytical calculation and analysis for meander-coil electromagnetic acoustic transducers
Author :
Hao, Kuansheng ; Huang, Songling ; Zhao, Wei ; Duan, Rujiao
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
An analytical model and analysis method is proposed in this paper to analyze EMAT with complex PCB or FPC meander coil. The frequency-domain eddy current and Lorentz force in the specimen caused by the dynamic field and bias magnetic field were derived in terms of second vector potential, then the pulse time-domain response was obtained by FFT-IFFT method. An example was analyzed by the proposed method to verify its validity.
Keywords :
acoustic transducers; coils; eddy currents; fast Fourier transforms; frequency-domain analysis; printed circuits; FFT-IFFT method; FPC; Lorentz force; PCB; bias magnetic field; frequency-domain eddy current; meander-coil electromagnetic acoustic transducer; Coils; Conductors; Eddy currents; Equations; Lorentz covariance; Magnetic fields; Mathematical model; EMAT; meander coil; second vector potential;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2011 IEEE
Conference_Location :
Binjiang
Print_ISBN :
978-1-4244-7933-7
DOI :
10.1109/IMTC.2011.5944058
