Abstract
As a non-radiative, non-invasive, and nondestructive detection technique, the planar electrical capacitance tomography (PECT) has been employed for the defect detection of composite materials. Usually, the PECT sensor of square electrode array has been frequently investigated and discussed, due to its simplicity in the structure and modeling. In this paper, a PECT sensor of the hexagonal electrode array is proposed, which aims to offer better sensitivity and image quality. The hexagonal sensor has been evaluated and compared with the square sensor by numerical and experimental tests. The parameters of mean square error (MSE) and correlation coefficient (CC) indicate that the dielectric distribution images could be significantly improved. In addition, the hexagonal sensor tends to demonstrate better capability in discriminating the defect of smaller size.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
