Simulation-based performances assessment of FMC-TFM array imaging techniques

Pierre Calmon (1) , Florian Le Bourdais (2) , Xavier Artusi (3) , Roberto Miorelli (3) , Stéphane Leberre (3)

1 LIC (CEA, LIST) - Laboratoire Instrumentation et Capteurs (CEA, LIST)
2 LSMA (CEA, LIST) - Laboratoire Simulation et Modélisation Acoustique (CEA, LIST)
3 LSME (CEA, LIST) - Laboratoire de Simulation et de Modélisation Électromagnétique (CEA, LIST)

Advanced array imaging techniques such as FMC-TFM and derived methods have attracted a great deal of interest and are more and more used in the industry since they allow improved performances in a wide range of situations. However, questions often arise about the quantification of these performances, the relative advantages of different techniques or setups , and the sensitivity to uncontrolled parameters. Thus it is of interest to optimize the technique by reducing the number of ultrasonic salvos while maintaining a good level of performances. To assess the performance of array imaging techniques is not a trivial task since it requires to account for variability of influent parameters. In this communication we demonstrate the potential of simulation tool to fulfil these needs. The present study is based on the use of versatile simulation tools implemented in the CIVA platform which allow to predict results obtained when applying a given processing algorithm to a given acquisition scheme (defined by the subset of simultaneously/successively emitting/receiving elements). Comparing different processing techniques and different acquisition schemes becomes possible. Moreover, statistical analysis of results issued from meta-models derived from CIVA allow to evaluate the sensitivity of the technique to various influent parameters. Probability of detection curves can be extracted and the sizing accuracy can be quantified and compared.

Domaines: Physique [physics]; Physique mathématique [math-ph]

Pierre Calmon, Florian Le Bourdais, Xavier Artusi, Roberto Miorelli, Stéphane Leberre. Simulation-based performances assessment of FMC-TFM array imaging techniques. ECNDT 2018 - 12th European Conference on Non-Destructive Testing, Jun 2018, Göteborg, Sweden. ⟨hal-04411666⟩