Total focusing method for non destructive evaluation: Toward real-time imaging systems

Mickael Njiki (1) , Abdelhafid Elouardi (1) , Samir Bouaziz (1) , Olivier Casula (2) , Olivier Roy (3)

1 SATIE-MOSS - Méthodes et Outils pour les Signaux et Systèmes
2 DISC (CEA, LIST) - Département Imagerie et Simulation pour le Contrôle (CEA, LIST)
3 M2N-NDT Les Ulis Courtaboeuf

This paper describes a dedicated architecture for real-time imaging using the Total Focusing Method (TFM) and an advanced acquisition technique called the Full Matrix Capture (FMC). The architecture was entirely described using VHDL language and implemented on a V5FX70T Xilinx FPGA for the control part and a V5SX95T Xilinx FPGA for the acquisition part. The architecture is able to perform real-time FMC-TFM imaging at a maximum frame rate of 73 frames/s and a maximum resolution of 128×128 pixels, which is sufficient as a performance for a real-time imaging with a good characterization of defects in the non destructive evaluation context.

Mots clés: Non-Destrucitve Evaluation; Phased Array; Hardware Architecture; Real-time Imaging; TFM

Domaines: Sciences de l'ingénieur [physics]; Electronique; Traitement du signal et de l'image [eess.SP]

Mickael Njiki, Abdelhafid Elouardi, Samir Bouaziz, Olivier Casula, Olivier Roy. Total focusing method for non destructive evaluation: Toward real-time imaging systems. 2013 IEEE 56th International Midwest Symposium on Circuits and Systems (MWSCAS), Aug 2013, Columbus, United States. ⟨10.1109/MWSCAS.2013.6674860⟩. ⟨hal-01686820⟩