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On-the-fly fast X-ray tomography using a CdTe pixelated detector – application in mechanical testing
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SYSNO ASEP 0494940 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title On-the-fly fast X-ray tomography using a CdTe pixelated detector – application in mechanical testing Author(s) Kumpová, Ivana (UTAM-F) RID, SAI, ORCID
Vopálenský, Michal (UTAM-F) RID, ORCID, SAI
Fíla, Tomáš (UTAM-F) RID, SAI, ORCID
Kytýř, Daniel (UTAM-F) SAI, RID, ORCID
Vavřík, Daniel (UTAM-F) RID, SAI, ORCID
Pichotka, Martin (UTAM-F)
Jakůbek, Jan (UTAM-F)
Keršner, Z. (CZ)
Klon, J. (CZ)
Seitl, S. (CZ)
Sobek, J. (CZ)Number of authors 11 Source Title IEEE Transactions on Nuclear Science. - : Institute of Electrical and Electronics Engineers - ISSN 0018-9499
Roč. 65, č. 12 (2018), s. 2870-2876Number of pages 14 s. Publication form Print - P Language eng - English Country US - United States Keywords cadmium telluride (CdTe) detectors ; fracture mechanics ; material characterization ; mechanical testing Subject RIV JB - Sensors, Measurment, Regulation OECD category Electrical and electronic engineering R&D Projects EF16_019/0000766 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UTAM-F - RVO:68378297 UT WOS 000454236100004 EID SCOPUS 85054508531 DOI 10.1109/TNS.2018.2873830 Annotation Fast tomography measurements are still done almost exclusively within the domain of synchrotrons. However, recent progress in radio diagnostic instrumentation has enabled researchers to perform time-lapse computed tomography (4D-CT) even under laboratory conditions with standard X-Ray sources. Thus, fast time-dependent processes within materials with relatively high X-Ray attenuation can be monitored. The article describes the in-situ tomographic monitoring of crack formation and propagation in a quasi-brittle silicate matrix composite subjected to three point bending. A three-dimensional CT volume containing the region of interest (ROI) in the specimen is imaged over a period of time while the continuously increasing load causes crack initiation and propagation, creating a dynamic volume dataset. An acquisition time of 50 seconds for one full angle tomography with 400 projections makes this tomographic system one of the fastest systems in the world. The resulting visualizations provide qualitative information concerning progressive crack propagation within areas of lower material density. Differential images then allow displaying the spatial orientation of the crack over time. The results were further processed for a quantitative analysis of image quality using various methods of beam hardening correction. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2019 Electronic address https://ieeexplore.ieee.org/document/8482343
Number of the records: 1