Title :
Novel eddy current testing sensor for the inspection of printed circuit boards
Author :
Kacprzak, D. ; Taniguchi, T. ; Nakamura, K. ; Yamada, S. ; Iwahara, M.
Author_Institution :
Kanazawa Univ., Japan
fDate :
7/1/2001 12:00:00 AM
Abstract :
This paper presents a novel eddy-current testing (ECT) sensor for the inspection of printed circuit board (PCB), which detects trace damages on PCB conductors. The sensor is composed of a meander-exciting coil and three solenoid pick-up coils. Application of three pick-up coils increases the speed of the inspection process. Information about defects can be extracted either from an amplitude or a phase of a signal obtained during the inspection. A visualization process was provided using the amplitude data. The structure of the ECT sensor and principles of detection, as well as experimental results, are presented
Keywords :
eddy current testing; inspection; magnetic sensors; printed circuit manufacture; quality control; solenoids; PCB inspection; QC; amplitude data; eddy current testing sensor; meander-exciting coil; solenoid pick-up coils; subsignals calibration; trace damage; visualization process; Circuit testing; Coils; Conductors; Data mining; Data visualization; Eddy current testing; Electrical capacitance tomography; Inspection; Printed circuits; Solenoids;
Journal_Title :
Magnetics, IEEE Transactions on
