Title :
Noncontact Characterization of Carbon-Fiber-Reinforced Plastics Using Multifrequency Eddy Current Sensors
Author :
Yin, Wuliang ; Withers, Philip J. ; Sharma, Umesh ; Peyton, Anthony J.
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester
fDate :
3/1/2009 12:00:00 AM
Abstract :
The characterization of carbon-fiber-reinforced plastics (CFRPs) using multifrequency eddy current sensors is presented in this paper. Three sensors are designed for bulk conductivity measurements, directionality characterization, and fault detection and imaging of unidirection, cross-ply, and impact-damaged CFRP samples. Analytical and finite-element (FE) models describing the interaction of the sensors with the CFRP plate samples are developed to provide an explanation of, and physical insights into, the measured results and observed phenomena. A signal processing method is developed to compensate for the variation in lift-off during the measurements.
Keywords :
carbon fibre reinforced plastics; electric impedance imaging; electric sensing devices; electrical conductivity measurement; finite element analysis; nondestructive testing; signal processing; bulk conductivity measurement; carbon-fiber-reinforced plastic; cross-ply laminate sample; directionality characterization; finite-element model; impact-damaged CFRP sample; multifrequency eddy current sensor design; noncontact material characterization; signal processing method; unidirectional imaging; Carbon-fiber-reinforced plastics (CFRPs); materials characterization; modeling; multifrequency eddy current sensors; nondestructive evaluation (NDE); polymer composites;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
Conference_Location :
10/10/2008 12:00:00 AM
DOI :
10.1109/TIM.2008.2005072
