12.1020192D and 3D FEM calculation within CIVA UTCategory "CIVA Software" | No comment
In CIVA2020, an array of models is provided in order to reach the best compromise between accuracy and computation time. This now includes a 2D and 3D FEM model directly included in CIVA UT for crack-like defects modelling, with planar or complex shapes (surface breaking ones with planar or cylindrical back walls, or embedded defects). This is based on a hybrid method using the fast and efficient pencil models to simulate beam propagation connected with a FEM beam/defect calculation in box(es) around defect(s). You can deal with issues such as defect tip sharpness impact, defect sizes below the wavelength, or complex wave modes generated at the defect interaction such as creeping waves. Some random variability can also be introduced in the crack morphology to evaluate its impact on the detection sensitivity. A specific grid editor let’s the user define the defect geometry from which the FE mesh is generated.
The EXTENDE team