Open Access
ARTICLE
Damage Detection for CFRP Based on Planar Electrical Capacitance Tomography
Wenru Fan, Chi Wang*
College of Electronic Information and Automation, Civil Aviation University of China, Tianjin, 300300, China
* Corresponding Author: Chi Wang. Email:
Structural Durability & Health Monitoring 2020, 14(4), 303-314. https://doi.org/10.32604/sdhm.2020.011009
Received 22 April 2020; Accepted 29 July 2020; Issue published 04 December 2020
Abstract
Due to the widespread use of carbon fiber reinforced polymer/plastic
(CFRP), the nondestructive structural health monitoring for CFRP is playing an
increasingly essential role. As a nonradiative, noninvasive and nondestructive
detection technique, planar electrical capacitance tomography (PECT) electrodes
array is employed in this paper to reconstruct the damage image according to the
calculated dielectric constant changes. The shape and duty ratio of PECT electrodes are optimized according to the relations between sensitivity distribution and
the dielectric constant of different anisotropic degrees. The sensitivity matrix of
optimized PECT sensor is more uniform as the result shows, because the sensitivity of insensitivity area can be increased by adding rotation of optimized electrodes. The reconstructed image qualities due to different PECT arrays and different
damage locations are investigated at last. The simulation results indicate that:
PECT can be used to detect the surface damage of CFRP; the sensitivity matrix
of PECT for CFRP is highly relevant with the degree of anisotropic dielectric constant; the rotatable PECT sensor with rotation has better performance in uniformity of sensitivity; for different damage locations, the rotatable sensor with
rotation has better image quality in most cases.
Keywords
Cite This Article
Fan, W., Wang, C. (2020). Damage Detection for CFRP Based on Planar Electrical Capacitance Tomography.
Structural Durability & Health Monitoring, 14(4), 303–314.
Citations