A Uniform Eddy Current Probe with a Double-Excitation Coil for Flaw Detection on Aluminium Plates
Ageng Sadnowo Repelianto,
Naoya Kasai,
Kouichi Sekino,
Masaki Matsunaga
Affiliations
Ageng Sadnowo Repelianto
Department of Risk Management and Environmental Sciences, Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama 240-8501, Japan
Naoya Kasai
Department of Risk Management and Environmental Sciences, Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama 240-8501, Japan
Kouichi Sekino
Department of Mechanical and Materials Engineering, Kanagawa Institute of Industrial Science and Technology, Yokohama 243-0435, Japan
Masaki Matsunaga
Department of Risk Management and Environmental Sciences, Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama 240-8501, Japan
In this present study, a new uniform eddy current (UEC) probe with a double-excitation coil and pancake orientation is proposed. It is confirmed that the probe generates a strong magnetic field induction that increases the intensity of uniform eddy currents; moreover, it is found to be more efficient in power consumption for excitation using a finite element simulation. Experiments are performed to detect different flaw lengths and depths on an aluminium plate. The flaw signal detected by the probe indicates a high signal-to-noise ratio and increases as a function of flaw depth. The quantitative evaluation of flaws with the proposed UEC probe is achieved based on experimental results.
