APPLICATIONS AND NEW CAPABILITIES OF SIMULATION SOFTWARE FOR NDT

Speaker:
Foucher, Fabrice; EXTENDE; France

Authors:
Foucher, F.; EXTENDE; France
Fernandez, R.; EXTENDE; France
Lonne, S.; EXTENDE; France
Leberre, S.; CEA, LIST; France

ID: ECNDT-0109-2018

The CIVA platform is a well-known multi technique simulation and analysis software in NDT. Developed by CEA LIST, but also resulting from the contribution of numerous industrial and academic partners within Europe, the software keeps evolving to offer its user the best performance in terms of numerical efficiency, imaging, and reliability demonstration. This article introduces some applications examples from these latest developments.
Regarding numerical approaches (initially based on pure semi-analytical model) the current trend is to merge numerical models to semi-analytical ones in order to benefit from the advantage of both approaches. For instance, the UT module of CIVA is now embedding several Finite Elements models to account for more complex phenomena in the wave/flaw interactions.
This paper will also illustrate the new capabilities in terms of simulation of Total Focusing Method, an emerging and promising UT technique. In particular, CIVA now includes ATFM, or PWI acquisition schemes. Among other new possibilities, the Eddy Current module now introduces the simulation of the Pulsed Eddy Current technique. One can also mention new robot trajectories and iterative reconstruction algorithm available in the Computed Tomography module.
Simulation is often considered as a help during the design stage of a new component. But it is also very useful to support performance or reliability demonstration (such as POD studies) of an in-service inspection method by reducing the number of necessary mock-ups and experimental trials. In this frame, the sensibility analysis of influential parameters is often a key issue which requires often quite heavy parametric studies. To optimize this, a new approach based on meta-models database has now been implemented in the software in order to provide a dramatic increase in the number of results that can be analyzed from a reduced database of calculations.