Laboratory X-ray imaging in material sciences

0572537 - ÚTAM 2024 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Koudelka_ml., Petr - Kytýř, Daniel - Jiroušek, O.
Laboratory X-ray imaging in material sciences.
Book of Abstracts. 18th Youth Symposium on Experimental Solid Mechanics. Praha: Institute of Theoretical and Applied Mechanics, 2023 - (Kytýř, D.; Doktor, T.; Zlámal, P.), s. 21-21. ISBN 978-80-86246-66-6.
[Youth Symposium on Experimental Solid Mechanics /18./. Telč (CZ), 11.06.2023-14.06.2023]
Grant CEP: GA ČR(CZ) GA23-05128S
Institucionální podpora: RVO:68378297
Klíčová slova: X-ray imaging * material characterization * mechanical properties
Obor OECD: Materials engineering

In recent decades, X-ray imaging and computed (micro)tomography (XCT) in particular have become common tools for volumetric inspection, visualization, and analysis of internal structure in materials from various fields [1]. In this lecture, we will explore various applications of laboratory X-ray imaging chains utilizing the combination of tomographical imaging with mechanical, thermal, or chemical loading of the irradiated sample in a so-called time-resolved imaging allowing for unprecedented insight into different phenomena driving fundamental processes encountered in various fields of material science. We will show that failure processes in engineering or geological materials [2] can be thoroughly studied by synergy of information from radiographical imaging and other methods including acoustic emission detection and optical measurements via high-speed visible-spectrum and thermal-imaging cameras, where the radiography provides important spatial information regarding deformation processes evolving within the tested samples that could not be obtained otherwise. The state-of-the-art the laboratory based imaging chains for investigation of dynamic response of materials under loading will be also discussed including high speed X-ray radiography utilizing a powerful X-ray source during high velocity impact as an approach suitable for inspection of an impacted sample. As an alternative to both conventional high-power sources and accelerator facilities, capabilities of a flash X-ray system developed primarily for in-situ ballistics research providing very short bursts of an extremely powerful intermittent X-ray radiation with a typical duration of dozens of nanoseconds will be shown.
Trvalý link: https://hdl.handle.net/11104/0343913