Sophian, A., Tian, G.Y., Taylor, D. and Rudlin, J. (2002) Design of a pulsed eddy current sensor for detection of defects in aircraft lap-joints. Sensors and Actuators A Physical, 101 (1-2). pp. 92-98. ISSN 0924-4247

This paper presents a new type of pulsed eddy current (PEC) sensor that has been designed for defect detection in aircraft lap-joint structures. The sensor employs a new excitation circuit that requires no additional signal amplification and the paper also reports compensation techniques that improve the sensing resolution and stability. A new hybrid feature of the peak value in time domain and the maximum frequency magnitude in frequency domain has been investigated. A test rig has been built and some results from aircraft samples are presented.

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