Micro-tomography | Funding Period 2
The service project S supports experimentally oriented projects in the acquisition, processing, visualization, and analysis of micro-tomography (μ-CT) data. It bundles expertise in handling complex instruments as well as in the use of sophisticated software tools for processing tomography data, thus warranting optimal support as well as knowledge transfer between projects. Access to the new CT portal Gulliver at RPTU Kaiserslautern-Landau also enables time-resolved in situ CT analyses of larger structural elements under loading. Beyond its service function, the project has scientific objectives regarding the conception of customized CT data acquisition schemes and the design of data processing chains for novel measurement tasks on unique μ-CT instruments.
Scientists
![[Translate to English:] Hans-Gerd Maas](/fileadmin/_processed_/6/1/csm_Maas_Quadratisch_616a498495.jpg "Prof. Dr. sc. techn. habil. Hans-Gerd Maas")
D-01062 Dresden (Germany)
01062 Dresden (Germany)
![[Translate to English:]](/fileadmin/_processed_/8/1/csm_Liebold_Quadratisch_29078130e0.jpg "Dr.-Ing. Frank Liebold")
D-01062 Dresden (Germany)
Cooperations
Ehemalige / Former involved
Prof. Dr.-Ing. habil. Sven Klinkel (project leader, RWTH Aachen, 07/2020 – 06/2024)
Tomography | Funding Period 1
Project S – Tomography – combines service and scientific aspects in four working points (WP). In WP 1 "Conception of computer tomographic recording procedures", the focus is on data acquisition including task-specific recording schemes, whereby several tomographs are used at different locations. In WP 2, "Software basis and data storage", various evaluation programmes are analysed and made available, and concepts for long-term data storage are created. To minimise systematic residual errors of the tomograph, algorithms and concepts are developed in the third work package "System calibration." "Geometric registration", which is the subject of WP 4, comes into play in the analysis of changes in time series recordings or in the integration of recordings from devices with different functional principles. This includes the detection of rigid body movements.
Publikationen | Publications
Curosu, V.; Kikis, G.; Krüger, C.; Liebold, F.; Macek, D.; Mester, L.; Platen, J.; Ritzert, S.; Stüttgen, S.; Kaliske, M.; Klinkel, S.; Loehnert, S.; Maas, H.-G.; Reese, S.; Robertz, D. (2023) Ansätze für numerische Methoden zur Inspiration, Analyse und Bewertung neuartiger Carbonbetonstrukturen in: Bauingenieur 98, issue 11, p. 368–377 – DOI: 10.37544/0005-6650-2023-11-56
Giese, J.; Herbers, M.; Liebold, F.; Wagner, F.; Grzesiak, S.; de Sousa, C.; Pahn, M.; Maas, H.-G.; Marx, S.; Curbach, M.; Beckmann, B. (2023) Investigation of the Crack Behavior of CRC Using 4D Computed Tomography, Photogrammetry, and Fiber Optic Sensing in Buildings 13, issue 10, 2595 – DOI: https://doi.org/10.3390/buildings13102595
Hardner, M.; Liebold, F.; Wagner, F.; Maas, H.-G. (2024) Investigations into the Geometric Calibration and Systematic Effects of a Micro-CT System in: Sensors 24, issue 16, 5139 – DOI: https://doi.org/10.3390/s24165139
Liebold, F.; Bergmann, S.; Bosbach, S.; Adam, V.; Marx, S.; Claßen, M.; Hegger, J.; Maas, H.-G. (2023) Photogrammetric Image Sequence Analysis for Deformation Measurement and Crack Detection Applied to a Shear Test on a Carbon Reinforced Concrete Member in: Ilki, A.; Çavunt, D.; Çavunt, Y. S. [eds.] Building for the Future: Durable, Sustainable, Resilient – Proc. of fib Symposium 2023, 05.–07.06.2023 in Istanbul (Turkey), publ. in: Lecture Notes in Civil Engineering 350, Cham: Springer, p. 1273–1282 – DOI: 10.1007/978-3-031-32511-3_130
Liebold, F.; Lorenzoni, R.; Curosu, I.; Léonard, F.; Mechtcherine, V.; Paciornik, S.; Maas, H.-G. (2021) 3D Least Squares Matching Applied to Micro-Tomography Data in: Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. 43, issue B2, p. 533–539 – DOI: 10.5194/isprs-archives-XLIII-B2-2021-533-2021
Liebold, F.; Maas, H.-G. (2022) An approach to subpixel accuracy widening crack width determination in image sequences in: Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. 48, issue 2/W2-2022, p. 61–68 – DOI: 10.5194/isprs-archives-XLVIII-2-W2-2022-61-2022
Liebold, F.; Maas, H.-G. (2022) 3D-Deformationsanalyse und Rissdetektion in multitemporalen Voxeldaten von Röntgentomographen in: Kersten, T.; Tilly, N. [eds.] 42. Wissenschaftlich-Technische Jahrestagung der DGPF, Band 30, 05./06.10.2022 in Dresden, p. 105–116 – DOI: 10.24407/KXP:1796026123
Liebold, F.; Maas, H.-G. (2022) Computational Optimization of the 3D Least-Squares Matching Algorithm by Direct Calculation of Normal Equations in: Tomography 8, issue 2, p. 760–777 – DOI: 10.3390/tomography8020063
Liebold, F.; Mader, D.; Sardemann, H.; Eltner, A.; Maas, H.-G. (2023) A Bi-radial Model for Lens Distortion Correction of Low-cost UAV Cameras in: Remote Sensing 15, Issue 22, 5283 – DOI: https://doi.org/10.3390/rs15225283
Liebold, F.; Wagner, F.; Giese, J.; Grzesiak, S.; de Sousa, C.; Beckmann, B.; Pahn, M.; Marx, S.; Curbach, M.; Maas, H.-G. (2023) Damage Analysis and Quality Control of Carbon-Reinforced Concrete Beams Based on In Situ Computed Tomography Tests in Buildings 13, issue 10, 2669 – DOI: https://doi.org/10.3390/buildings13102669
Liebold, F.; Maas, H.-G. (2024) Eccentricity Correction Methods for Circular Targets in Perspective Projection in: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences 48-2/W7-2024, p. 65–72 – https://doi.org/10.5194/isprs-archives-XLVIII-2-W7-2024-65-2024
Mester, L.; Klempt, V.; Wagner, F.; Scheerer, S.; Klarmann, S.; Vakaliuk, I.; Curbach, M.; Maas, H.-G.; Löhnert, S.; Klinkel, S. (2023) A Comparison of Multiscale Methods for the Modelling of Carbon-Reinforced Concrete Structures in: Ilki, A.; Çavunt, D.; Çavunt, Y. S. [eds.] Building for the Future: Durable, Sustainable, Resilient – Proc. of fib Symposium 2023, 05.–07.06.2023 in Istanbul (Turkey), publ. in: Lecture Notes in Civil Engineering 350, Cham: Springer, p. 1418–1427 – DOI: 10.1007/978-3-031-32511-3_145
Mester, L.; Wagner, F.; Liebold, F.; Klarmann, S.; Maas, H.-G.; Klinkel, S. (2022) Image-based modelling of carbon-fibre reinforced concrete shell structures in: Stokkeland, S.; Braarud, H. C. [eds.] Concrete Innovation for Sustainability – Proc. for the 6th fib International Congress 2022, 12.–16.06.2022 in Oslo (Norway), Oslo: Novus Press, p. 1631–1640.
Vakaliuk, I.; Scheerer, S.; Liebold, F.; Wagner, F.; Kruppa, H.; Vollpracht, A.; Curbach, M. (2024) Properties of the High-Performance Matrix of TRC Elements Cast Under Vacuum Conditions in: Mechtcherine, V.; Signorini, C.; Junger, D. [eds.]: Transforming Construction: Advances in Fiber Reinforced Concrete – Proc. of XI RILEM-fib Int. Symp. on Fiber Reinforced Concrete (BEFIB 2024), 15.–18.09.2024 in Dresden, publ. in RILEM Bookseries, Vol. 54, Cham: Springer Nature Switzerland, p. 786–793 – https://doi.org/10.1007/978-3-031-70145-0_93
Studentische Arbeiten | Student’s works
Gebhardt, M. (2023) Entwicklung und Validierung eines Kalibrierkonzeptes für Kameras mit bizonaler radial-symmetrischer Verzeichnung [Masterarbeit | Master’s thesis]
Chakkarathodi, A. K. (2023) Development of the workflow for the analysis of the TRC structure’s geometry using methods of 3D scanning [Masterarbeit | Master’s thesis] (mit | with C01)