scholarly journals Evaluation of a pulsed eddy-current system for subsurface flaw detection

1977 ◽  
Author(s):  
K.J. Reimann ◽  
A. Sather
Keyword(s):  
Eddy Current ◽  
Current System ◽  
Flaw Detection ◽  
Pulsed Eddy Current

Pulsed eddy current flaw detection and flaw characterization

1989 ◽  
Vol 22 (3) ◽  
pp. 183
Author(s):  
K.J. Krzwosz ◽  
R.E. Beissner ◽  
J.E. Doherty
Keyword(s):  
Eddy Current ◽  
Flaw Detection ◽  
Pulsed Eddy Current ◽  
Flaw Characterization

Optimized design of flaw detection method based on pulsed eddy current testing

2021 ◽  
Author(s):  
Xianwei Wu ◽  
Yifan Chen ◽  
Jialing Huang ◽  
Xue Li ◽  
Chenke Yin ◽  
...  
Keyword(s):  
Eddy Current ◽  
Detection Method ◽  
Flaw Detection ◽  
Eddy Current Testing ◽  
Optimized Design ◽  
Current Testing ◽  
Pulsed Eddy Current

Pulsed Eddy-Current Measurements of Corrosion and Cracking in Aging Aircraft

1997 ◽  
Vol 503 ◽  
Author(s):  
J. C. Moulder ◽  
J. A. Bieber
Keyword(s):  
Eddy Current ◽  
Current System ◽  
Fatigue Cracks ◽  
Single Frequency ◽  
Pulsed Eddy Current ◽  
Wide Range ◽  
Lift Off ◽  
Hidden Corrosion ◽  
Time Gating

ABSTRACTPulsed, or transient eddy-current methods are an effective tool for quantitative characterization of hidden corrosion and cracking in multi-layer aircraft structures. Eddy currents are the method of choice for this task, since they penetrate multiple layers of metal, whether or not the layers are mechanically bonded. The pulsed eddy-current technique is an important advance over conventional eddy-current methods because it rapidly acquires data over a wide range of frequencies, thereby providing more information than a conventional, single-frequency eddy-current instrument. We have combined a pulsed eddy-current instrument with a portable two-axis scanner to produce an instrument capable of rapidly scanning aircraft lap splices in situ, producing pseudo-color images that reveal hidden corrosion or cracking. A unique feature of time-domain eddy-current data is the ability to selectively filter clutter from the image by time-gating the pulsed signal. Time-gating permits the user to select the inspection depth, thereby eliminating interference from upper layers, air gaps, lift-off variation and fasteners. By using a theoretical model of the pulsed eddy-current system, it is possible to interpret the data quantitatively, yielding quantitative maps of corrosion damage. Some of the same advantages of the pulsed eddycurrent technique apply to the characterization of hidden fatigue cracks as well, although the tieory for crack signals is less advanced.

A Constrained Neural Classifier for Pulsed Eddy Current based Flaw Detection in Industrial Pipes

2020 ◽  
Author(s):  
Gilvan Silva ◽  
Edmar Souza ◽  
Paulo Farias ◽  
Eduardo Simas Filho ◽  
Maria Albuquerque ◽  
...  
Keyword(s):  
Eddy Current ◽  
Flaw Detection ◽  
Pulsed Eddy Current ◽  
Neural Classifier

Pulsed eddy current system for dynamic inspection of defects

2004 ◽  
Vol 46 (5) ◽  
pp. 256-259 ◽  
Author(s):  
G Y Tian ◽  
A Sophian ◽  
D Taylor ◽  
J Rudlin
Keyword(s):  
Eddy Current ◽  
Current System ◽  
Pulsed Eddy Current

Pulsed eddy current evolution for flaw detection in ferromagnetic materials

2005 ◽  
Vol 17 (1/2) ◽  
pp. 105-111 ◽  
Author(s):  
M. SHAIRA ◽  
P. GUY ◽  
Y. JAYET ◽  
L. DEVILLE ◽  
J. COURBON ◽  
...  
Keyword(s):  
Eddy Current ◽  
Flaw Detection ◽  
Ferromagnetic Materials ◽  
Pulsed Eddy Current
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