By Topic

Saw-wave excitation eddy-current NDE based on HTS RF SQUID

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Dongfeng He ; Fac. of Eng., Iwate Univ., Morioka, Japan ; Yoshizawa, M.

Using a high-temperature superconductor radio frequency superconducting quantum interference device planar gradiometer as the sensor, we developed a saw-tooth wave excitation eddy-current nondestructive evaluation device. By analyzing the amplitudes of harmonics in the response signal of the sample, we successfully detected artificial defects in an aluminum plate and estimated the defect depth. We also demonstrated the possibility of constructing three-dimensional profiles of a defect. In our program for data processing, we employed a multiplying method to calculate the amplitudes of the harmonics, which was much faster than that using fast Fourier transforms. During the experiment, the x-y stage movement, data acquisition and data processing could be performed simultaneously.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:13 ,  Issue: 3 )