|
Yang Binfeng
Luo Feilu
Cao Xiongheng
Xu Xiaojie
College of Mechantronic Engineering
and Automation,
National University of Defense
Technology,
Changsha 410073, China |
|
|
ARRAY PULSED EDDY CURRENT
IMAGING SYSTEM USED TO
DETECT CORROSION
Abstract: A theory model is established to de-scribe the voltage-current response function. The peak amplitude and the zero-crossing time of the transient signal is extracted as the imaging features, array pulsed eddy current (PEC) imaging is proposed to detect corrosion. The test results show that this system has the advantage of fast scanning speed, different imaging mode and quantitative detection, it has a broad application in the aviation nondestructive testing.
Key words:
Array probe Pulsed eddy current Aircraft structure Corrosion imaging |