• Imperiale, Alexandre
• Leymarie, Nicolas
• Demaldent, Édouard

Abstract

Ultrasonic propagation modeling is a major asset in many industrial areas of advanced control. Providing numerical solutions to these problems requires sometimes complex and expensive procedures (memory capacity, computing time). In recent years, CEA LIST has been proposing a time-domain numerical calculation strategy based on a domain decomposition approach and on high order spectral elements. Here we extend this approach to ultrasonic inspections of composite structures reinforced with carbon fibers. This approach can be applied to both guided wave control configurations and more conventional volume wave inspections. In order to manage both geometries and complex defects, we introduce two coordinate systems representing the part before and after its deformation. This procedure allows reconstructing the local fiber orientation on the fly while leveraging the domain decomposition modeling strategy to include defects. In this talk, we will present the progress of the integration of these specific tools into the CIVA software platform.

Topics

• impedance spectroscopy
• Carbon
• composite
• defect
• ultrasonic
• decomposition