Previously, we have proposed an infinity coil as a high sensibility ECT sensor. This paper has evaluated a possibility of the backside defect searching by the low frequency excitation of a modified infinity coil whose exciting coils are the flat/film shape to fit to the curverved test targets.
In the present paper, we have elucidated the lift-off characteristics of the backside defect searching when employing the low frequency excitation to our flat/film shape infinity coil.
KikuchiharaH., MarinovaI., SaitoY., OhuchiM., MogiH. and OikawaY., Optimization of the Eddy Current Testing, Digest of The 15th Biennial IEEE Conference on Electromagnetic Field Computation, Oita Japan November 11-14, WC4-4, 2012, p. 495.
2.
KikuchiharaH. and SaitoY., Enhance the Sensibility of the ECT Sensor, Journal of the Japan Society of Applied Electromagnetics and Mechanics21(3) (2013), 356-361.
3.
MaruyamaK., MarinovaI. and SaitoY., Enhance the Sensibility of the Resonance type ECT Sensor, JAPMED'8, 2013, pp. 130-131.
4.
MaruyamaK., MarinovaI. and SaitoY., Development of flat ∞ coil for defect searching in the curved surface, E-Journal of Advanced Maintenace7(1) (2015), 59-65.
