Results of the 2007 UT modeling benchmark using two semi-analytical beam propagation and flaw scattering models

This paper presents some applications of ultrasonic (UT) simulation codes developed at IZFP, Germany and at CEA LIST, France, those latter being integrated into the CIVA software platform. These UT simulation codes are dedicated to the prediction of echo-responses from flaws. Results given and discussed are those obtained for the various problems of the 2007 UT Benchmark modeling session. They concern the responses from flat-bottomed holes inside curved blocks (concave or convex) inspected with immersed probes. The simulation codes are used to investigate the influence of the curvature upon the amplitude response of the flaw with respect to a flat specimen, used as a reference. Comparison with experimental results is also discussed.