Simulation and Numerical Analysis of Nondestructive Testing on Weld Cracks by Eddy Current Thermography

Abstract:

Eddy current thermography is an emerging non-destructive method for detection and characterization of surface cracks in conductive specimen over a relatively large area. In this paper, the weld crack testing method based on eddy current thermography was proved to be feasible through studying the influence of inductor orientation, excitation frequency and crack length, depth, width on the surface temperature distribution using finite element analysis software COMSOL Multiphysics4.3b. The findings show that the quantitative evaluation is more viable according to the optimized parameters. This method has a certain reference value for quantitative analysis and designing inspection system with eddy current stimulated approach.

• Periodical: Advanced Materials Research (Volumes 1061-1062)
• Pages: 874-880
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1061-1062.874
• Online since: December 2014
• Authors: Lei Jiang*, Zhi Ping Liu, Xing Le Liu, Ge Lu
• Keywords: Eddy Current Thermography, Finite Element Analysis (FEA), Non-Destructive Testing, Weld Crack

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