Multiresolution X-ray CT Imaging of Fiber Reinforced Composite Materials

Marius Costin (1) , Samuel Legoupil (1) , Delphine Lazaro-Ponthus (2) , Valerie Kaftandjian (3)

1 LIST (CEA) - Laboratoire d'Intégration des Systèmes et des Technologies
2 LM2S (CEA, LIST) - Laboratoire Modélisation et Simulation de Systèmes (CEA, LIST)
3 CNDRI - Controle Non Destructif par Rayonnements Ionisants

We present an X-ray CT imaging method adapted to complex samples such as fiber reinforced composites, for which different spatial resolutions are needed to resolve the structures at different size scales: the whole sample, groups of fibers, individual fibers and matrix material. We developed an efficient algorithm which uses two sets of tomographic data acquired in a zoom-in CT configuration and which outputs a bi-resolution image. The method was validated on simulated data and we present experimental results for two different samples.

Mots clés: CT imaging; spatial resolution; tomographic data; fiber reinforced composite; groups of fibers; individual fibers; matrix material; Radiographic Testing (RT); reconstruction algorithm; Discrete wavelet transform; computed tomography

Domaines: Physique Nucléaire Expérimentale [nucl-ex]; Traitement du signal et de l'image [eess.SP]

Marius Costin, Samuel Legoupil, Delphine Lazaro-Ponthus, Valerie Kaftandjian. Multiresolution X-ray CT Imaging of Fiber Reinforced Composite Materials. International Symposium on Digital Industrial Radiology and Computed Tomography, Jun 2011, Berlin, Germany. pp.Mo 4.2. ⟨hal-00904897⟩