X-ray Computed Tomography Reconstruction on Non- Standard Trajectories for Robotized Inspection
Résumé
The inspection of complex industrial parts with X-ray computed
tomography (CT) is of great interest to characterize them and detect potential flaws.
Classically CT acquisition is based on a circular trajectory and this is by far the most
frequent case in industrial applications. The use of robotic arms for inspection is
recent and it is mainly done for accessing specific and difficult views in digital
radiographic inspection. A new X-ray inspection platform is being installed at CEA
LIST, which uses two robotic arms for positioning the X-ray source and the
detector. In parallel to the development of this platform which enables a large
variety of scanning trajectories, work will focus on developing CT reconstruction
algorithms that are adapted to non-standard trajectories. We present here new
challenges brought by these robotized inspections and preliminary results for
reconstruction on such trajectories. CIVA software is used to simulate these
complex inspections and our developed methods will be integrated as reconstruction
tools.