A5040942595- Structural Health Monitoring Techniques
- Ultrasonics and Acoustic Wave Propagation
- Concrete Corrosion and Durability
- Infrastructure Maintenance and Monitoring
- Probabilistic and Robust Engineering Design
- Civil and Structural Engineering Research
- High-Velocity Impact and Material Behavior
- Non-Destructive Testing Techniques
- Structural Response to Dynamic Loads
- Fault Detection and Control Systems
- Geophysical Methods and Applications
- Nuclear Physics and Applications
- Analytical Chemistry and Sensors
- Nuclear physics research studies
- Atomic and Subatomic Physics Research
- Structural Integrity and Reliability Analysis
- Advanced Measurement and Metrology Techniques
- Structural Engineering and Vibration Analysis
- Structural Engineering and Materials Analysis
- Thermography and Photoacoustic Techniques
- Tunneling and Rock Mechanics
- Fluid Dynamics Simulations and Interactions
- Wind and Air Flow Studies
- GaN-based semiconductor devices and materials
- Advanced Statistical Methods and Models
Federal Institute For Materials Research and Testing
2014-2025
Siemens (Germany)
1995
University of Wollongong
1975
Commonwealth Scientific and Industrial Research Organisation
1975
Abstract Digitale Zwillinge werden zukünftig ein integraler Bestandteil des Erhaltungsmanagements von Verkehrsbrücken sein. In diesem Beitrag wird argumentiert, dass sie nicht nur als digitale Abbilder physikalischer Bauwerke verstanden sollten, sondern eine umfassende Methode, die durch Integration Datenerfassung, Erhaltungsmaßnahmen, Datenmanagement, Bauwerksbewertung und Entscheidungsunterstützung Bauwerksüberwachung ‐erhaltung verbessert. Zusammenhang betont, der Übergang reaktiven zur...
Abstract Im Forschungsprojekt DiMoWind‐Inspect wurde untersucht, welche Grundvoraussetzungen geschaffen werden müssen, um digitale Methoden für die Instandhaltung von Offshore‐Windenergieanlagen einsetzen zu können. Daten aus allen Lebensphasen der Anlagen derzeit nur selten effizient dafür genutzt, sinnvollsten Instandhaltungsmaßnahmen am richtigen Ort, zum Zeitpunkt und mit den geringsten Kosten durchzuführen. Eine im Vorhaben entwickelte einheitliche Strukturierung bisher häufig...
Damage detection and localization in civil or mechanical structures is a subject of active development research. A few vibration-based methods have been developed so far, requiring, for example, modal parameter estimates the reference damaged states investigated structure, addition finite element model. For operation, temperature has shown to be major nuisance efficiency such because parameters are varying not only with damage but also due variations. detection, rejection approaches...
Abstract The Bundesanstalt für Materialforschung und -prüfung (BAM) collaborates with TNO to develop a software framework for automated calibration of structural models based on monitoring data. ultimate goal is include such in the asset management process engineering structures. As basis developing framework, multi-span road bridge consisting ten simply supported steel box girders was selected as test case. Our group measured output-only vibration data from one girder under ambient...
The Nibelungen Bridge in Worms, Germany has been selected as a national demonstration structure for advanced non-destructive testing (NDT) and structural health monitoring concepts to extend the lifetime of civil structures optimize O&M actions. Parts research that involves this bridge demonstrator belong focus area program SPP100+. In program, bridges SHM System extended combined with an additional setup vibration sensors. used digital smart sensor pre-processing functions, arrangement...
Abstract. Conventional non-destructive testing methods for crack detection provide just a snapshot of fatigue evolution at specific location in the moment examination. The luminescence coating realizes clear visibility entire formation. consists two layers with different properties and functions. bottom layer emits light as fluorescence under UV radiation. top covers fluorescing one prevents emitting case no damage surface. Several experiments show that due to sensitive even early stage...
Detecting changes in the eigenstructure of linear systems is a comprehensively investigated subject. In particular, change detection methods based on hypothesis testing using Gaussian residuals have been developed previously. such residuals, reference model confronted to data from current system. this paper, output-only depending varying external physical parameter are considered. These driven by process noise, whose covariance may also vary between measurements. To deal with parameter, an...
Abstract Im Dezember 2019 wurden bei einer turnusmäßigen Inspektion der B 1‐Brücke am Altstädter Bahnhof in Brandenburg an Havel massive und schnell voranschreitende Schäden festgestellt. Als Ursache für die Risse entlang Längsträger wurde das Versagen eines signifikanten Anteils Spanndrähte konzentrierten Spannglieder vermutet. Die Brücke umgehend den Verkehr gesperrt im Mai 2021 gesprengt. Vorfeld Sprengung durch Bundesministerium Digitales (BMDV) weiterführende Untersuchungen zum...
The local asymptotic approach is promising for vibration-based fault diagnosis when associated to a subspace-based residual function and efficient hypothesis testing tools. It has the ability of detecting small changes in some chosen system parameters. In function, left null space observability matrix reference model confronted Hankel output covariances estimated from test data. When this not perfectly known model, it should be replaced by an estimate data avoid errors computation. paper,...
Classic non-destructive fatigue crack detection methods reveal the state of damage evolution at moment application, generally not under operational conditions. The here introduced luminescence method realizes a clear visibility occurred and growing in loaded components during operation. Different established experiments show that due to sensitive coating formation can be detected even early stage premise reached surface. consists two layers with different properties functions. bottom layer...
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...
Engineering structures are an important part of our transport infrastructure. Their failure is associated with high safety risks and economic damage. Ensuring the availability these constructions guaranteeing their operational thus tasks. Currently, maintenance engineering a reactive process therefore not yet predictive process. Every 3 to 6 years, visually inspected, all damages documented condition grade assigned structure based on detected damages. Continuous data-providing methods such...