Design and Realization of a Non-Destructive Testing Device Operating on Eddy Current Principle
Main Article Content
Abstract
This paper presents a design of a non-destructive testing device using eddy current technique. This device has a sinusoidal excitation source consisting of 4 frequencies which developed to operate with double-function eddy current sensors. The testing results are displayed on a black and white graphic LCD as a function of sensor's output voltage to testing position, and user's evaluation is based on the shape of this signal. Experiments on several kind of tested specimen show that this device operates stably and can detect small surface or under-surface cracks.
Keywords
eddy current, non-destructive testing, surface crack, under-surface crack
Article Details
References
[1] T. L. Cung, P. Y. Joubert, and E. Vourch, "Eddy current evaluation of air-gaps in aeronautical multilayered assemblies using a multi-frequency behavioral model," Measurement, vol. 44, no. 6, (2011) pp. 1108-1116.
[2] X. Li, B. Gao, W. L. Woo, G. Y. Tian, X. Qiu, and L. Gu, "Quantitative Surface Crack Evaluation Based on Eddy Current Pulsed Thermography." IEEE Sens. J., vol. 17, no. 2, (2017) pp. 412-421.
[3] W. E. Deeds and C. V. Dodd, "Determination of Multiple Properties with Multiple Eddy-Current Measurements," Int Adv Nondestr Test U. S., vol. 8, (1981).
[4] H. Ping-jie and W. Zhao-tong, "Inversion of thicknesses of multi-layered structures from eddy current testing measurements." J. Zhejiang Univ.-Sci. A, vol. 5, no. 1, (2004) pp. 86-91.
[5] E. Vourc'h, P.-Y. Joubert, G. L. Gac, and P. larzabal, "Nondestructive evaluation of loose assemblies using multi-frequency eddy currents and artificial neural networks," Meas. Sci. Technol., vol. 24, no. 12, (2013) p. 125604.
[2] X. Li, B. Gao, W. L. Woo, G. Y. Tian, X. Qiu, and L. Gu, "Quantitative Surface Crack Evaluation Based on Eddy Current Pulsed Thermography." IEEE Sens. J., vol. 17, no. 2, (2017) pp. 412-421.
[3] W. E. Deeds and C. V. Dodd, "Determination of Multiple Properties with Multiple Eddy-Current Measurements," Int Adv Nondestr Test U. S., vol. 8, (1981).
[4] H. Ping-jie and W. Zhao-tong, "Inversion of thicknesses of multi-layered structures from eddy current testing measurements." J. Zhejiang Univ.-Sci. A, vol. 5, no. 1, (2004) pp. 86-91.
[5] E. Vourc'h, P.-Y. Joubert, G. L. Gac, and P. larzabal, "Nondestructive evaluation of loose assemblies using multi-frequency eddy currents and artificial neural networks," Meas. Sci. Technol., vol. 24, no. 12, (2013) p. 125604.