Jeon, Jiyun Park, Chan Sam Lee, Sangheon Chae, Hee Young Kim, Jae Joon Son, Hungsun 2024-01-19T12:33:56Z 2024-01-19T12:33:56Z 2022-04-03 2022-02 0018-9456 https://pubs.kist.re.kr/handle/201004/115671 This article aims to develop a miniaturized magnetic induction tomography (MIT) system with a multi-channel phase-domain transceiver integrated circuit (IC). MIT is an imaging technique using phase shift between a primary magnetic field and induced field caused by the conductivity of a target object. Due to the weak strength of time-varying magnetic field, it is difficult to differentiate the magnetic field interaction. In particular, if the conductivity of the target object is low, the induced field is too small to identify the phase difference. The magnetic dipole model is applied to modeling the MIT system and analyzing performance. The model offers an effective means to analyze and visualize magnetic field interaction in multi-channel by the sum of magnetic dipoles. Then, a multi-channel MIT detection device is developed to include the phase-domain transceiver for automatic high-resolution phase measurement and wireless connectivity, achieving enhanced power efficiency and miniaturization. Finally, the multi-channel MIT system is applied to identify the various sizes of cracks on carbon fiber rods. The sensitivity of the system is analyzed by imaging the cracks by multi-channel measurement. The results show that the multi-channel MIT system can be successfully miniaturized and perform the nondestructive test (NDT). English Institute of Electrical and Electronics Engineers Magnetic Induction Tomography Using Multi-Channel Phase-Domain Transceiver for Structural Health Monitoring Article 10.1109/TIM.2022.3151951 1 IEEE Transactions on Instrumentation and Measurement, v.71 IEEE Transactions on Instrumentation and Measurement 71 N scie scopus 000766618900016 2-s2.0-85124829081 Engineering, Electrical & Electronic Instruments & Instrumentation Engineering Instruments & Instrumentation Article SYSTEM Magnetic fields Conductivity Transceivers Computational modeling Magnetic resonance imaging Carbon Tomography Magnetic dipole magnetic induction tomography (MIT) multi-channel measurement phase-domain transceiver surface crack detection