A5060182794- Structural Response to Dynamic Loads
- High-Velocity Impact and Material Behavior
- Structural Behavior of Reinforced Concrete
- Innovative concrete reinforcement materials
- Horticultural and Viticultural Research
- High voltage insulation and dielectric phenomena
- Rock Mechanics and Modeling
- Geophysical Methods and Applications
- Mechanical Behavior of Composites
- Entomological Studies and Ecology
- Power Transformer Diagnostics and Insulation
- Civil and Structural Engineering Research
- Insect-Plant Interactions and Control
- Forest Insect Ecology and Management
- Plant Pathogens and Fungal Diseases
- Fermentation and Sensory Analysis
- Non-Destructive Testing Techniques
- Calibration and Measurement Techniques
- Fungal Plant Pathogen Control
- melanin and skin pigmentation
- Concrete and Cement Materials Research
- Sensor Technology and Measurement Systems
- Metal and Thin Film Mechanics
- Masonry and Concrete Structural Analysis
- Concrete Corrosion and Durability
TU Dresden
2014-2023
Federal Institute For Materials Research and Testing
2023
Konrad-Adenauer-Stiftung
2021
Vorwerk (Germany)
2021
Stahl-Zentrum (Germany)
2019
Siemens (Germany)
2018
Warsaw University of Technology
1997-2002
Leibniz-Institute for Food Systems Biology at the Technical University of Munich
1932
Impact resistance of reinforced concrete (RC) structures can be significantly improved by strengthening RC members with thin composite layers featuring high damage tolerance. Indeed, to limit the well-known vulnerability cement-based materials against impact loading, synergistic effects short fibres and continuous textile meshes as hybrid reinforcement has been proved highly beneficial. This paper addresses characterisation novel composites through accelerated drop-weight tests conducted on...
Strain-hardening cement-based composites (SHCC) are a novel class of fiber-reinforced concretes which exhibit high tensile strain capacity prior to failure localization. Although the behavior SHCC has been matter study in numerous research works, these under other loading modes scarcely investigated. The article at hand addresses mechanical two types normal-strength subject uniaxial tension, torsion, and combinations torsional axial loading. investigation were made with polyvinyl-alcohol...
Abstract A test series of 15 reinforced concrete (RC) plates was carried out in the drop tower Otto Mohr Laboratory Technische Universität Dresden. In these tests, structural behavior RC different thicknesses investigated under impact load. Within this report, specimen and used facility are introduced. Furthermore, experimental program results will be shown. Following, influence velocities presented discussed. The damage levels influenced by specific variation speed form a very good basis...
Abstract This study presents the performance of carbon textile reinforcement used as strengthening layers for reinforced concrete (RC) slabs under repeated impact loads. In order to reveal contribution behavior RC impacts, five identical with dimensions 1.5 m × 0.20 were manufactured and tested at Technische Universität Dresden. To understand failure mechanisms loadings, two specimens kept unstrengthened different velocities. The rest was strengthened three reinforcements embedded in an...
A large number of impact experiments have been carried out at the Technische Universität Dresden in recent years several research projects. The focus was on reinforced concrete plates one hand and subsequently strengthened other hand. Based these investigations, two fundamental tasks arose: (1) finding an objective description damage components made steel that had previously subjected to load (2) quantification effect a applied strengthening layer. In this paper we will both. At first,...
Abstract In the following article impact experiments from experimental and numerical point of view will be described. order to keep number parameters varied manageable, focus was firstly on similar plain concrete plates. The were carried out with aim collect reference values simulate these as basis for further investigations. only parameter that has been changed velocity. part publication deals manufacturing specimens, setup, execution experiments, measured values, a brief evaluation...
Textile reinforced concrete, especially textile concrete with carbon fibres, was already been used for strengthening steel structures under static loads up to now. The question is if the composite can also be against impact loads. main goal of a current research project at Technische Universität Dresden development and characterization reinforcement fabric optimized resistance. But there challenge. There need find best combination fibre material (glass, carbon, steel, basalt, …) structure...
Due to the increasing need for long-distance energy transmission and space saving installations, focus is more shifted DC operated gas insulated systems. Reaching steady state of electrical field distribution after energizing, resistive controlled by conductivities insulating materials SF <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</inf> . The heating inner conductor due operating currents causes an inhomogeneous temperature within...
The paper presents two nonlinear dielectric effects from literature in mineral insulating oil, when stressed with DC voltage. In the first part it is shown how current time measurements fit Kerr field strength measurements. second part, effect noted for polarity reversal. Both are caused by oil intrinsic charge carriers and their special properties. current-time-behaviour distribution calculated solving Poisson-Nernst-Planck-equation dependently.
In this article, a partial selection of experiments on enhancing the impact resistance structural components with non-metallic, textile-reinforced concrete is discussed. The focus experimental investigations in which thin, plates characterized. article discusses materials, fabrics and test setup used. For work, drop tower from Otto Mohr Laboratory, belongs to Technische Universtät Dresden, was Furthermore, results are presented evaluated using different methods. Based collected data,...
Abstract Nur eine einzige Chance gab es, im Rahmen einer Kooperation mit der Bundeswehr dem Interesse Wissenschaft beim Ansprengen von Betonplatten nachzugehen. Neben vielen durchgeführten Fall‐ und Beschussversuchen Otto‐Mohr‐Laboratorium in Dresden nutzten die Autoren Gelegenheit eines Feldversuchs unter ähnlichen Bedingungen wie Labor. Hierzu wurden Probekörper sowie gesamte Mess‐ Versuchstechnik kurzerhand auf einen Übungsplatz transportiert. Die Bedienung des ansonsten autarken...
The relevant physical mechanisms influencing the space charge accumulation in solid insulating materials for gas insulated systems are studied. Space measurements according to pulsed electro acoustic method (PEA) epoxy samples performed under DC stress. influence of temperature and field strength on distribution is clarified. homo charges observed, even at short stress durations. It explained by injection carriers from electrodes into material. At longer durations hetero accumulate close...
Abstract The damage analysis of reinforced concrete (RC) is high interest for reasons effective maintenance and structural safety buildings. structures RC plates loaded by an impact were investigated, applying X‐ray planar tomography finite element method (FEM). Planar allows getting three‐dimensional information the elements including crack, spalling, scabbing. FEM model validated on data justifies application further predictions description. In this study, we investigated three different...
The presented paper deals with a series of impact experiments conducted in the drop tower facility Otto Mohr Laboratory (OML) at Technische Universität Dresden. research results were generated three projects. A number reinforced concrete (RC) plates which subsequently strengthened on not-impacted side produced and tested. As basic materials for RC plates, normal strength (C35/45) conventional BSt500 reinforcement steel used. Different material combinations, cement-bonded composites chosen...
Abstract Ziel des seit 2017 durch die Deutsche Forschungsgemeinschaft (DFG) geförderten Graduiertenkollegs GRK 2250 ist interdisziplinäre Erforschung von Methoden zur Erhöhung Impaktwiderstands Bauwerken nachträgliche Verstärkung. Der vorliegende Beitrag gibt einen Einblick in GRK‐Forschung auf Strukturebene. Mineralisch gebundene Verstärkungsschichten wurden der dem Impakt abgewandten Bauteilseite untersucht. Als Material für diese Schichten kamen feinkörnige Matrices ohne und mit...