Numerical Simulation of the Reliability of In-Situ Eddy Current Testing Considering the Influence of Penetration Depth

摘要

In order to study the reliability of in-situ eddy current testing,the factors affecting the in-situ eddy current detection and the signal response values are firstly determined.Then the numerical simulation model of eddy current detection is established by COMSOL,and the different values of the device and the tested structural are substituted into the simulation model to obtain the signal response value.Finally,the probability of detection(POD)curve is obtained by numerical simulation method based on function model.In this paper,based on the numerical simulation method of probability density function,the numerical simulation of eddy current testing reliability is formed.Through the in-situ eddy current testing reliability numerical simulation case,the detection probability of cracks in the structure is quantitatively affected by the penetration depth.