In an effort to improve the reliability of ultrasonic nondestructive testing methods, a finite element method was employed to calculate the scattered fields of ultrasound. The accurate analysis of ultrasonic propagation and scattering plays an importa...
In an effort to improve the reliability of ultrasonic nondestructive testing methods, a finite element method was employed to calculate the scattered fields of ultrasound. The accurate analysis of ultrasonic propagation and scattering plays an important role in predicting the response of measurement system, and help the operators optimize test procedures when combined with other components of the testing system. A good system model also makes it possible to perform parametric studies, and in this way the probability of detection and reliability can be improved. In this study, a finite element modeling was developed for the analysis of scattered fields due to cracks, and then the accuracy of results was checked by solving several representative problems. The size of element and the integral time step, which are the critical components for the convergence of numerical results, were determined in ANSYS commercial finite element code. Several propagation and scattering problems in 2-D isotropic and anisotropic materials were solved and their results were compared with analytical results.