抄録
For nondestructive testing, we developed a simulation tool of elastic wave propagation in a material with complex outer surfaces or various inclusions. The tool was based on the elastodynamic finite integration technique (EFIT) with an image-based modeling. In this study, the image-based EFIT code is accelerated using graphics processing units (GPUs) with the CUDA Fortran programming language. The methodology on the speed-up using the CUDA Fortran is described, and checked by numerical experiments with multiple GPU boards. The calculation speed with a GPU can be dramatically improved in comparison with the speed obtained by running the same simulation on a classical CPU. In addition, the validation of the image-based EFIT is performed by ultrasonic measurements of SH Lamb wave. The results of the simulation show good agreements with the measurement.
