Regensburg 2013 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
MI: Fachverband Mikrosonden
MI 6: X-ray Imaging, Holography and Tomography
MI 6.1: Talk
Wednesday, March 13, 2013, 09:30–09:45, H5
About the Potential of novel X-ray Contrast Modalities in Material Science and Non-Destructive Testing — •Friedrich Prade1,2, Michael Chabior1,2, and Franz Pfeiffer1,2 — 1Department of Physics, Technische Universität München, 85748 Garching, Germany — 2Institute of Medical Engineering, Technische Universität München, 85748 Garching, Germany
Since its beginning X-ray imaging has attracted increasing interest in various research fields besides medicine, such as material science, non-destructive testing (NDT) and security screening. Furthermore, recent developments of new X-ray imaging techniques, such as grating interferometry, helped to improve the X-ray imaging contrast. In addition to the standard absorption contrast, differential phase-contrast imaging (DPC) yields information on the electron density, whereas dark-field contrast imaging provides further information about small angle scattering properties of the sample. While especially DPC has been extensively tested in biomedical applications, e.g. to improve soft tissue contrast, little effort has been made to adapt both DPC and dark-field imaging to material science or NDT applications. In this study we explore applications for these novel X-ray contrast modalities in material science and NDT and evaluate the additional information provided by these techniques. We primary focus on dark-field imaging to study micron sized pores and cracks as well as the micro-structure of fiber reinforced materials, since these structures show a strong scattering signal.