Dokument-ID Dokumenttyp Autoren/innen Persönliche Herausgeber/innen Haupttitel Abstract Auflage Verlagsort Verlag Herausgeber (Institution) Erscheinungsjahr Titel des übergeordneten Werkes Jahrgang/Band ISBN Veranstaltung Veranstaltungsort Beginndatum der Veranstaltung Enddatum der Veranstaltung Ausgabe/Heft Erste Seite Letzte Seite URN DOI Lizenz Datum der Freischaltung OPUS4-58940 Vortrag Zinas, Orestis 3D Probabilistic Site Characterization The aim of the study is to infer the soil stratification from the provided CPT and borehole data. We infer the soil type at any location within the domain of interest from the SBT index Ic (Robertson, 2009). This index can be directly related to the CPT data through an empirical correlation model. In addition, the soil classes contained in the borehole logs can be expressed as bounds on Ic. A log-transformation was applied to Ic, Y = ln(Ic), and Y was modelled by a 3D Random Field, with a fully Bayesian hierarchical Gaussian Process model to explicitly capture uncertainties. 2023 19th eawe PhD Seminar Hannover, Germany 06.09.2023 08.09.2023 2023-11-28 OPUS4-57019 Zeitschriftenartikel Sadowski, A.; Seidel, M.; Al-Lawati, H.; Azizi, E.; Balscheit, Hagen; Böhm, M.; Chen, Lei; van Dijk, I.; Doerich-Stavridis, C.; Kunle Fajuyitan, O.; Filippidis, A.; Winther Fischer, A.; Fischer, C.; Gerasimidis, S.; Karampour, H.; Kathirkamanathan, L.; Subramanian, S.; Topkaya, Cem; Wagner, H. N. R.; Wang, J.; Wang, J.; Kumar Yadav, K.; Yun, X.; Zhang, P. 8-MW wind turbine tower computational shell buckling benchmark - Part 1: An international 'round-robin' exercise An assessment of the elastic-plastic buckling limit state for multi-strake wind turbine support towers poses a particular challenge for the modern finite element analyst, who must competently navigate numerous modelling choices related to the tug-of-war between meshing and computational cost, the use of solvers that are robust to highly nonlinear behaviour, the potential for multiple near-simultaneously critical failure locations, the complex issue of imperfection sensitivity and finally the interpretation of the data into a safe and economic design. This paper reports on an international 'round-robin' exercise conducted in 2022 aiming to take stock of the computational shell buckling expertise around the world which attracted 29 submissions. Participants were asked to perform analyses of increasing complexity on a standardised benchmark of an 8-MW multi-strake steel wind turbine support tower segment, from a linear elastic stress analysis to a linear bifurcation analysis to a geometrically and materially nonlinear buckling analysis with imperfections. The results are a showcase of the significant shell buckling expertise now available in both industry and academia. This paper is the first of a pair. The second paper presents a detailed reference solution to the benchmark, including an illustration of the Eurocode-compliant calibration of two important imperfection forms. Oxford Elsevier Science 2023 Engineering failure analysis 148 1 23 10.1016/j.engfailanal.2023.107124 2023-02-20 OPUS4-57244 Beitrag zu einem Tagungsband Gerards-Wünsche, Paul; Ratkovac, Mirjana; Schneider, Ronald; Hille, Falk; Baeßler, Matthias A framework for assessing the reliability of crack luminescence - an automated fatigue crack detection system The new crack luminescence method offers the possibility of making fatigue surface cracks in metallic materials more visible during inspections through a special coating system. This coating system consists of two layers, whereby the first layer has fluorescent properties and emits visible light as soon as it is irradiated by UV light. The top layer is black and is designed to prevent the fluorescent layer from emitting if no crack develops in the underlying material. The technique proved particularly useful in a wide variety of fatigue tests of steel components under laboratory conditions. Moreover, it has the potential to be used in various industrial applications. To enable industrial deployment and integration into maintenance strategies, a concept study is developed in this contribution, resulting in a qualification framework that can serve as a foundation for determining the reliability of the crack luminescence system in terms of a probability of detection curve. Within this study, factors causing measurement variability and uncertainty are being determined and their influences assessed. Due to the extension of the system by a moving computer vision system for automated crack detection using artificial intelligence, additional long-term effects associated with structural health monitoring systems need to be incorporated into an extended probability of detection study as part of the technical justification. Finally, important aspects and findings related to design of experiments are discussed, and a framework for reliability assessment of a new optical crack monitoring method is presented, emphasizing the influence of various uncertainty parameters, including long-term effects such as system ageing. 2023 SPIE Conference Smart Structures + Nondestructive Evaluation 2023 978-1-5106-6086-1 SPIE Conference Smart Structures + Nondestructive Evaluation 2023 Long Beach, CA, USA 24.03.2023 28.03.2023 1 15 10.1117/12.2658390 2023-03-30 OPUS4-57245 Vortrag Gerards-Wünsche, Paul A framework for assessing the reliability of crack luminescence - an automated fatigue crack detection system The new crack luminescence method offers the possibility of making fatigue surface cracks in metallic materials more visible during inspections through a special coating system. This coating system consists of two layers, whereby the first layer has fluorescent properties and emits visible light as soon as it is irradiated by UV light. The top layer is black and is designed to prevent the fluorescent layer from emitting if no crack develops in the underlying material. The technique proved particularly useful in a wide variety of fatigue tests of steel components under laboratory conditions. Moreover, it has the potential to be used in various industrial applications. To enable industrial deployment and integration into maintenance strategies, a concept study is developed in this contribution, resulting in a qualification framework that can serve as a foundation for determining the reliability of the crack luminescence system in terms of a probability of detection curve. Within this study, factors causing measurement variability and uncertainty are being determined and their influences assessed. Due to the extension of the system by a moving computer vision system for automated crack detection using artificial intelligence, additional long-term effects associated with structural health monitoring systems need to be incorporated into an extended probability of detection study as part of the technical justification. Finally, important aspects and findings related to design of experiments are discussed, and a framework for reliability assessment of a new optical crack monitoring method is presented, emphasizing the influence of various uncertainty parameters, including long-term effects such as system ageing. 2023 SPIE Conference Smart Structures + Nondestructive Evaluation 2023 Long Beach, CA, USA 24.03.2023 28.03.2023 2023-03-30 OPUS4-55651 Vortrag Eichner, Lukas A framework for data and structural integrity management for support structures in offshore wind farms based on building information modelling Support structures of wind turbines in German offshore wind farms are regularly inspected. Currently, inspection outcomes are generally not systematically recorded. This prevents their consistent handling and processing, which is a key requirement to enable an efficient structural integrity management. As part of the DiMoWind-Inspect project, a data model and reference designation system for such inspection results is developed to facilitate their identification, localization, quantification, tracing and linking throughout the lifetime of a wind farm and beyond. The inspection results together with structural health monitoring results and information on repairs form the basis for assessing and predicting the structural condition, estimating the remaining lifetime, and planning of future inspections, structural health monitoring, and repairs. As a basis for developing a digital structural integrity management, a generic framework is proposed in this paper, which describes the stakeholders, data, models, processes and workflows of the integrity management of support structures in offshore wind farms and their interrelations. The framework adopts a building information modelling approach to describe the information relevant to the structural integrity management. The central digital space of the framework is a common data environment. An implementation of the framework will enable a digital structural integrity management in which inspection, structural health monitoring, repair, assessment and planning outcomes generated throughout the life cycle of a wind farm can be consistently collected, managed, shared and processed by the relevant shareholders. 2022 8th International Symposium on Reliability Engineering and Risk Management Hannover, Germany 04.09.2022 07.09.2022 2022-09-12 OPUS4-55656 Beitrag zu einem Tagungsband Eichner, Lukas; Gerards, Paul; Herrmann, Ralf; Schneider, Ronald; Hille, Falk; Baeßler, Matthias A framework for data and structural integrity management for support structures in offshore wind farms based on building information modelling Support structures of wind turbines in German offshore wind farms are regularly inspected. Currently, inspection outcomes are generally not systematically recorded. This prevents their consistent handling and processing, which is a key requirement to enable an efficient structural integrity management. As part of the DiMoWind-Inspect project, a data model and reference designation system for such inspection results is developed to facilitate their identification, localization, quantification, tracing and linking throughout the lifetime of a wind farm and beyond. The inspection results together with structural health monitoring results and information on repairs form the basis for assessing and predicting the structural condition, estimating the remaining lifetime, and planning of future inspections, structural health monitoring, and repairs. As a basis for developing a digital structural integrity management, a generic framework is proposed in this paper, which describes the stakeholders, data, models, processes and workflows of the integrity management of support structures in offshore wind farms and their interrelations. The framework adopts a building information modelling approach to describe the information relevant to the structural integrity management. The central digital space of the framework is a common data environment. An implementation of the framework will enable a digital structural integrity management in which inspection, structural health monitoring, repair, assessment and planning outcomes generated throughout the life cycle of a wind farm can be consistently collected, managed, shared and processed by the relevant shareholders. Singapore Research Publishing ISRERM Organizers 2022 Proc. of the 8th Intl. Symp. on Reliability Engineering and Risk Management (ISRERM 2022) 8th International Symposium on Reliability Engineering and Risk Management Hannover, Germany 04.09.2022 07.09.2022 111 117 10.3850/978-981-18-5184-1_MS-04-161-cd 2022-09-12 OPUS4-45721 Beitrag zu einem Tagungsband Kullolli, Borana; Stutz, H. H.; Cuellar, Pablo; Baeßler, Matthias; Rackwitz, F. Cardoso, A. S.; Borges, J. L.; Costa, P. A.; Gomes, A. T.; Marques, J. C.; Vieira, C. S. A generalized plasticity model adapted for shearing interface problems The response of many geotechnical systems, whose structural behavior depends on shearing effect, is closely related to soil structure interaction phenomenon. Experimentally it is found that the localisation of these effect happens at a narrow soil layer next to the structure. Numerically, this behavior can be modelled through inter-face elements and adequate constitutive models. In this work, a constitutive model in the framework of Gen-eralized Plasticity for sandy soils has been chosen to be adapted for the interface zone. From the direct shear experiments a sandy soil at loose and dense states under different normal pressures is considered. The adapted constitutive model is able to reproduce contraction and dilatation of the soil according to its relative density and it shows a good agreement with the experimental data. Porto, Portugal NUMGE Faculty of Engineering, University of Porto, Porto, Portugal 2018 Numerical Methods in Geotechnical Engineering IX 1 978-1-138-33198-3 Conference Porto, Portugal 25.06.2018 27.06.2018 97 102 2018-08-16 OPUS4-47068 Vortrag Kullolli, Borana A generalized plasticity model adapted for shearing interface problems The response of many geotechnical systems, whose structural behavior depends on shearing effect, is closely related to soil structure interaction phenomenon. Experimentally it is found that the localisation of these effect happens at a narrow soil layer next to the structure. Numerically, this behavior can be modelled through interface elements and adequate constitutive models. In this work, a constitutive model in the framework of Generalized Plasticity for sandy soils has been chosen to be adapted for the interface zone. From the direct shear experiments a sandy soil at loose and dense states under different normal pressures is considered. The adapted constitutive model is able to reproduce contraction and dilatation of the soil according to its relative density and it shows a good agreement with the experimental data. 2018 Numerical Geotechnics Porto, Portugal 25/06/2018 28/06/2018 2018-12-19 OPUS4-48588 Vortrag Cuéllar, Pablo A GPU-based micromechanical simulation model for submerged geotechnical problems Driven steel piles are commonly used as deep foundations for a wide range of engineering structures, particularly in the offshore branch. They are also an interesting example among the broad spectrum of geotechnical applications where the fluid-solid interaction at the pore-scale can play a major role for the macromechanical behaviour of the whole system. In the context of the geotechnical practice for offshore wind-farm structures, both the industrial design and the actual dimensions of the large piles used as foundations in the seabed are often driven by factors such as the soil resistance to driving (SRD), which are still not well understood and often estimated based on mere empirical correlations or overly simplified one-dimensional models. In particular, the role of the micromechanical effects during the installation process (e.g. local dilatancy or contractancy) and their consequences on the pore pressure levels at the pile-tip and on the effective resistance to driving, are generally either disregarded or at most assumed to be covered by the simplified engineering "black-box" solutions. Here, we propose a general framework to address such local aspects of a geotechnical application involving fluid-saturated soils while retaining the focus on the micro-scale phenomena. We advocate for an approach that combines the relative simplicity of the Discrete Element Method (DEM) for the solid mechanics with the capabilities of the Lattice Boltzmann Method (LBM) for the fluid dynamics. In this sense, we aim to compile some useful techniques and practical recommendations for an efficient GPU-based implementation of a micromechanical LBM-DEM simulation tool. 2019 DEM8, the 8th International Conference on Discrete Element Methods University Twente, Enschede, The Netherlands 20.07.2019 26.07.2019 2019-08-01 OPUS4-51210 Beitrag zu einem Tagungsband Auersch, Lutz A mid-frequency component of train-induced ground vibration due to scattered axle impulses and the irregularities of the soil and ballast The passage of the train is dominated by the impulses of the static axle loads. The response of the regular homogeneous and irregular soils has been calculated by the finite-element method in frequency domain. The superposition of the impulse responses yields the quasi-static component of the ground vibration which is restricted to very low frequencies and to the close near-field of the track. In case of an irregular soil or ballast of which the stiffness varies randomly in space, a mid-frequency ground vibration component is generated by the scattering of the axle impulses. Measurements will be shown which prove the existence of the mid-frequency ground vibration component and the unique explanation by the scattered axle impulses: many international measurements with a raised mid-frequency component, axle-box measurements with a too low mid-frequency dynamic load, amplitude-speed dependencies which are incompatible with irregularity-induced dynamic loads, and ground vibration reductions due to stiff track elements. Leuven KULeuven 2020 Proc. of ISMA/USD 2020 International Conference on Noise and Vibration Engineering (ISMA/USD) Online meeting 07.09.2020 09.09.2020 2611 2625 2020-09-14 OPUS4-51212 Vortrag Auersch, Lutz A mid-frequency component of train-induced ground vibration due to scattered axle impulses and the irregularities of the soil and ballast The passage of the train is dominated by the impulses of the static axle loads. The response of the regular homogeneous and irregular soils has been calculated by the finite-element method in frequency domain. The superposition of the impulse responses yields the quasi-static component of the ground vibration which is restricted to very low frequencies and to the close near-field of the track. In case of an irregular soil or ballast of which the stiffness varies randomly in space, a mid-frequency ground vibration component is generated by the scattering of the axle impulses. Measurements will be shown which prove the existence of the mid-frequency ground vibration component and the unique explanation by the scattered axle impulses: many international measurements with a raised mid-frequency component, axle-box measurements with a too low mid-frequency dynamic load, amplitude-speed dependencies which are incompatible with irregularity-induced dynamic loads, and ground vibration reductions due to stiff track elements. 2020 International Conference on Noise and Vibration Engineering (ISMA/USD 2020) Online meeting 07.09.2020 09.09.2020 2020-09-14 OPUS4-50230 Zeitschriftenartikel Benseghier, Z.; Cuéllar, Pablo; Luu, L.-H.; Bonelli, S.; Philippe, P. A parallel GPU-based computational framework for the micromechanical analysis of geotechnical and erosion problems This article deals with the relevance and practical feasibility of micromechanical simulations for their application to general geomechanical problems involving fluid-saturated granular assemblies, whether frictional or cohesive. A set of conceptual and numerical tools is here presented, advocating for a parallel computation using graphical processing units (GPUs) to treat large numbers of degrees of freedom with conventional Desktop computers. The fluid phase is here simulated with a particle-resolved approach in the frame of the Lattice Botzmann Method (LBM) while the granular solid phase is modelled as a collection of discrete particles from a Molecular Dynamics DEM perspective. The range of possible material behaviours for the solid granular phase is intended here to cover a broad spectrum from purely frictional to viscous cohesive materials with either brittle or transient debonding features. Specific details of the implementation and some validation cases are put forward. Finally, some exemplary applications in the fields of soil erosion and geotechnical profile installation are provided along with a discussion on the parallel performance of the presented models. The results show that a micromechanical approach can be feasible and useful in practice, providing meaningful insights into complex engineering problems like the erosion kinetics of a soil under an impinging jet or the penetration resistance of a deep foundation in a layered soil profile. Elsevier Ltd. 2020 Computers and Geotechnics 120 Paper 103404, 1 urn:nbn:de:kobv:b43-502309 10.1016/j.compgeo.2019.103404 https://creativecommons.org/licenses/by-nc-nd/4.0/deed.de 2020-01-22 OPUS4-53749 Vortrag Schneider, Ronald A risk-based framework for optimizing inspection and maintenance of deteriorating structures monitored by vibration-based monitoring systems In this presentation, a framework for integrating vibration-based structural health monitoring data into the optimization of inspection and maintenance of deteriorating structural systems is presented. The framework is demonstrated in an illustrative example considering a steel frame subject to fatigue. 2021 EERA JP Wind WORKSHOP on Ongoing research in offshore wind structures Online meeting 16.09.2021 17.09.2021 2021-11-17 OPUS4-46432 Vortrag Schneider, Ronald A sampling-based approach to identifying optimal inspection and repair strategies for offshore jacket structures Identifying optimal inspection and repair strategies for offshore jacket structures is a challenging task. We pre-sent an approach, which is based on recent developments in the field of risk-based operation and maintenance planning at the structural system level. The approach utilizes heuristics to define inspection and repair strate-gies at the system level and to reduce the search space of possible strategies. For each defined strategy, the expected service life cost of inspection, repair and failure is evaluated based on simulated inspection and re-pair histories. Subset simulation is applied to compute the conditional repair and failure probabilities required for this analysis. It also forms the basis for simulating inspection and repair histories. The strategy that mini-mizes the expected service life cost is the optimal one in the set of pre-selected strategies. The underlying condition and performance model accounts for the stochastic dependence among the deterioration states of the different structural elements and the structural redundancy. The approach is demonstrated in a case study considering a jacket-type frame. In this study, we essentially vary the inspection interval, the minimum num-ber of inspected components and the target reliability, and identify the combination that minimizes the ex-pected total service life cost. 2018 The Sixth International Symposium on Life-Cycle Civil Engineering (IALCCE 2018) Gent, Belgium 28.10.2018 31.10.2018 2018-11-05 OPUS4-46434 Beitrag zu einem Tagungsband Schneider, Ronald; Rogge, Andreas; Thöns, S.; Bismut, E.; Straub, D. Caspeele, Robby; Taerwe, Luc; Frangopol, Dan M. A sampling-based approach to identifying optimal inspection and repair strategies for offshore jacket structures Identifying optimal inspection and repair strategies for offshore jacket structures is a challenging task. We pre-sent an approach, which is based on recent developments in the field of risk-based operation and maintenance planning at the structural system level. The approach utilizes heuristics to define inspection and repair strate-gies at the system level and to reduce the search space of possible strategies. For each defined strategy, the expected service life cost of inspection, repair and failure is evaluated based on simulated inspection and re-pair histories. Subset simulation is applied to compute the conditional repair and failure probabilities required for this analysis. It also forms the basis for simulating inspection and repair histories. The strategy that mini-mizes the expected service life cost is the optimal one in the set of pre-selected strategies. The underlying condition and performance model accounts for the stochastic dependence among the deterioration states of the different structural elements and the structural redundancy. The approach is demonstrated in a case study considering a jacket-type frame. In this study, we essentially vary the inspection interval, the minimum num-ber of inspected components and the target reliability, and identify the combination that minimizes the ex-pected total service life cost. London Taylor & Francis Group 2019 Proceedings of the sixth international symposium on life-cycle civil engineering (IALCCE 2018) 978-1-138-62633-1 The sixth international symposium on life-cycle civil engineering (IALCCE 2018) Ghent, Belgien 28.10.2018 31.10.2018 1081 1088 2018-11-05 OPUS4-46059 Beitrag zu einem Tagungsband Baeßler, Matthias; Hille, Falk Powers, N.; Frangopol, D. A study on diverse strategies for discriminating environmental from damage based variations in monitoring data Right from the beginning of applying SHM to bridge structures it was obvious that environmental based perturbations on the measurement significantly influence the ability to identify structural damage. Strategies are needed to classify such effects and consider them appropriately in SHM. Various methods have been developed and analyzed to separate environmental based effects from damage induced changes in the measures. Generally, two main approaches have emerged from research activity in this fields: (a) statistics based tools analyzing patterns in the data or in computed parameters and (b) methods, utilizing the structural model of the bridge taking into account environmental as well as damage based changes of stiffness values. With the back-ground of increasing affordability of sensing and computing technology, effort should be made to increase sensitivity, reliability and robustness of procedures, separating environmental from damage caused changes in SHM measures. The contribution describes both general strategies and points out their Advantages and drawbacks. As basis, a review on relevant methods was conducted. The aim of the study is to classify approaches for separating damage describing information from environmental based perturbations in dependency of the SHM objective. And such, it is intended to describe a best practice in designing concepts for Monitoring infrastructure, naturally effected by environmental influences. CRC Press 2018 Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges 978-1-138-73045-8 IABMAS Melbourne, Australia 09.07.2018 13.07.2018 1557 1564 2018-09-27 OPUS4-51338 Zeitschriftenartikel Omidalizarandi, M.; Herrmann, Ralf; Kargoll, B.; Marx, S.; Paffenholz, J.; Neumann, I. A validated robust and automatic procedure for vibration analysis of bridge structures using MEMS accelerometers Today, short- and long-term structural health monitoring (SHM) of bridge infrastructures and their safe, reliable and cost-effective maintenance has received considerable attention. From a surveying or civil engineer's point of view, vibration-based SHM can be conducted by inspecting the changes in the global dynamic behaviour of a structure, such as natural frequencies (i. e. eigenfrequencies), mode shapes (i. e. eigenforms) and modal damping, which are known as modal parameters. This research work aims to propose a robust and automatic vibration analysis procedure that is so-called robust time domain modal parameter identification (RT-MPI) technique. It is novel in the sense of automatic and reliable identification of initial eigenfrequencies even closely spaced ones as well as robustly and accurately estimating the modal parameters of a bridge structure using low numbers of cost-effective micro-electro-mechanical systems (MEMS) accelerometers. To estimate amplitude, frequency, phase shift and damping ratio coefficients, an observation model consisting of: (1) a damped harmonic oscillation model, (2) an autoregressive model of coloured measurement noise and (3) a stochastic model in the form of the heavy-tailed family of scaled t-distributions is employed and jointly adjusted by means of a generalised expectation maximisation algorithm. Multiple MEMS as part of a geo-sensor network were mounted at different positions of a bridge structure which is precalculated by means of a finite element model (FEM) analysis. At the end, the estimated eigenfrequencies and eigenforms are compared and validated by the estimated parameters obtained from acceleration measurements of high-end accelerometers of type PCB ICP quartz, velocity measurements from a geophone and the FEM analysis. Additionally, the estimated eigenfrequencies and modal damping are compared with a well-known covariance driven stochastic subspace identification approach, which reveals the superiority of our proposed approach. We performed an experiment in two case studies with simulated data and real applications of a footbridge structure and a synthetic bridge. The results show that MEMS accelerometers are suitable for detecting all occurring eigenfrequencies depending on a sampling frequency specified. Moreover, the vibration analysis procedure demonstrates that amplitudes can be estimated in submillimetre range accuracy, frequencies with an accuracy better than 0.1 Hz and damping ratio coefficients with an accuracy better than 0.1 and 0.2 % for modal and system damping, respectively. Berlin De Gruyter 2020 Journal of Applied Geodesy 14 3 1 28 10.1515/jag-2020-0010 2020-09-30 OPUS4-52927 Vortrag Herrmann, Ralf AISTEC 5. Verbundtreffen - Messfahrt auf der Maintalbrücke Gemünden Der Vortrag stellt die Durchführung und die ersten Ergebnisse der Belastungsfahrten der BAM im Rahmen des AISTEC Projekts an der Maintalbrücke am 19.05. und 20.05.2021 vor. Es wurden Tragwerksreaktionen des Bauwerks mit dem installierten Dauermonitoringsystem und insbesondere dem Betongelenk mit zusätzlich installierter Sensorik aufgezeichnet. Für die Ermittlung der Lastposition wurden mehrere Verfahren eingesetzt und verglichen. 2021 AISTEC 5. Verbundtreffen Online meeting 24.06.2021 24.06.2021 2021-07-07 OPUS4-43991 Vortrag Baeßler, Matthias Aktivitäten der BAM zu Offshore-Windenergie Die BAM ist in vielen Bereich zum Thema Ausbau Windenergie, insbesondere für den Offshore-Bereich aktiv. Die Aktivitäten werden exemplarisch für die Tätigkeiten im Bereich FE, PAZ und BI dargestellt. Anlass war eine Zusammenkunft mit dem Verband der Betreiber (AGOW) 2018 Erfahrungsaustausch AGOW-BAM BAM, Berlin, Germany 24.01.2018 2018-02-01 OPUS4-53026 Vortrag Baeßler, Matthias; Kannengießer, Thomas Aktivitäten in Forschung und Zulassung im Bereich Windenergie Die vielfältigen Tätigkeiten der BAM im Bereich technischer Sicherheit von Windenergieanlagen werden vorgestellt und im Bereich aktueller Entwicklungen in der Fügetechnik detailliert. 2021 Arbeitskreis Gründungsstrukturen und Stahlbau der WAB Online meeting 13.04.2021 2021-07-28