Affiliations: [a] Shaanxi Engineering Research Center of NDT and Structural Integrity Evaluation, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China | [b] Department of Applied Physics, School of Science, Xi’an Polytechnic University, Xi’an 710048, Shaanxi, China | [c] Xinjiang Uygur Autonomous Region Inspection Institute of Special Equipment, Urumqi 830011, Xinjiang, China
Correspondence:
[*]
Corresponding author: Zhenmao Chen, Shaanxi Engineering Research Center of NDT and Structural Integrity Evaluation, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China. Tel./Fax: +86 29 82668736; E-mail: [email protected].
Abstract: With the growing interest to use composite materials in industrial fields such as the aerospace and the transportation engineering, more attention is devoted to the development and application of non-destructive testing (NDT) techniques to the inspection of defects in carbon fiber reinforced polymer (CFRP). High frequency eddy current testing method is considered to be a promising tool for the NDT of CRFP. In this work, an anisotropic numerical code based on Ar formulation is developed and validated at first. The detectability of four different types of ECT probes is then evaluated by using the developed numerical code for detecting the crack type defects in CFRP laminates. Furthermore, the S/N ratios of the four probes related to the inclination noise are calculated numerically and compared to evaluate the detectability of these ECT probes. As conclusion, the newly proposed dual function vertical coil probe is found most suitable for the CFRP fiber breakage detection.
Keywords: CFRP, anisotropic material, fiber breakage detection, Ar method
