Filtern
Erscheinungsjahr
Dokumenttyp
- Beitrag zu einem Tagungsband (24) (entfernen)
Referierte Publikation
- nein (24) (entfernen)
Schlagworte
- Non-destructive testing (4)
- Concrete (3)
- Debonding (2)
- Inspection (2)
- Monitoring (2)
- Non-Destructive Testing (2)
- Ontology (2)
- RSSI (2)
- Acoustic emission (1)
- Active thermography (1)
- Arch bridges (1)
- Asphalt (1)
- Automated scanning device (1)
- Berlin Main Station (1)
- Blind / characteristic frequency (1)
- Bluetooth (1)
- Bluetooth Low Energy (1)
- Bond behaviour (1)
- Bridge (1)
- Bridge Knowledge (1)
- Bridge assessment (1)
- Bridge knowledge (1)
- Buliding materials (1)
- CFRP-Laminate (1)
- CFRP-laminates (1)
- CFRP-strengthening (1)
- Case study (1)
- Cast iron (1)
- Chloride (1)
- Chloride contamination (1)
- Civil engineering (1)
- Combination of NDT-methods (1)
- Combination of methods (1)
- Compressive strength (1)
- Concrete bridges (1)
- Condition assessment (1)
- Construction (1)
- Corrosion (1)
- Corrosion detection (1)
- Crack propagation test (1)
- DUCON® (1)
- Data fusion (1)
- Differential displacements (1)
- Displacement measurement (1)
- Ductility (1)
- Durability test (1)
- E-modulus (1)
- Effectiveness of repair (1)
- Environment and Energy (1)
- Erhaltung (1)
- Existing structures (1)
- Experimental approach (1)
- Fatigue life (1)
- Flexural strengthening (1)
- GPR (1)
- Ground penetrating radar (1)
- Ground penetration radar (1)
- Historische Eisenbahnlinien (1)
- Hydraulic levelling system (1)
- Impact (1)
- Impact-echo (1)
- Impulse radar (1)
- Impulse thermography (1)
- Impulse-thermography (1)
- Infrastruktur (1)
- Iron arch bridge (1)
- Knowledge Representation (1)
- Knowledge transfer (1)
- Large scale testing (1)
- Laser-based displacement measuring system (1)
- Long term corrosion monitoring (1)
- Magnetic powder test (1)
- Materials parameters (1)
- Measurement (1)
- Micro-reinforcement (1)
- Mobile elements (1)
- Moisture (1)
- Moisture damping coefficient, (1)
- NDT (1)
- NDT-toolbox (1)
- Non-destructive testing in civil engineering (1)
- Nondestructive testing (1)
- Numerical modeling (1)
- Numerical simulation (1)
- Periodic monitoring (1)
- Plaster (1)
- Pulse-phase thermography (1)
- Pulse-phase-thermography (1)
- Quantitative NDT (1)
- Quasi-static and dynamic tests (1)
- Railway Bridges (1)
- Rehabilitytion (1)
- Reinforced concrete bridges (1)
- Reinforcement corrosion (1)
- Reinforcing steel (1)
- Requirements for NDE (1)
- Riveted Bridges (1)
- Stereo photogrammetry (1)
- Strain measurement (1)
- Strain measurements (1)
- Tension test (1)
- Thermo-scanner (1)
- Thermography (1)
- Tiles (1)
- UHPC (1)
- Ultrasonic-echo (1)
- Ultrasound (1)
- Validation (1)
- Voids (1)
- Water dipoles (1)
- Wissenschaftliche Zusammenarbeit (1)
- representation of knowledge (1)
- riveted steel bridges (1)
Organisationseinheit der BAM
The active approach for non-destructive-testing in Civil Engineering (NDT-CE) with infraredthermography (IR), developed at the Federal Institute for Materials Research and Testing (BAM), is described in part one of this contribution. The active IR-approach is based on the principles of impulse- (IT) and pulse-phase-thermography (PPT). The concept is a direct result of a research project at the BAM in cooperation with the Technical University of Berlin (TUB) and was funded by the Deutsche Forschungsgemeinschaft (DFG). In the second part results of the new thermography-scanning system (thermo-scanner) of BAM on debonding of multi-layered structures, especially carbon fibre reinforced plates (CFRP) on concrete are presented. Both, the thermo-scanner developed at BAM, and the investigations carried out, are part of the
EU-Project Sustainable Bridges. In the third part of the paper the characteristic frequency of the optimum phase-contrast as a means for the characterization of defects depth in CE by means of PPT is introduced. A new quantitative approach is tested and discussed on concrete structures with defects of polystyrene and gas concrete.
A toolbox with non-destructive testing methods for the condition assessment of railway bridges
(2006)
The unified economic structure of the European market requires a unified transport infrastructure to ensure seamless and barrierfree transportation of passengers and goods. The European commission is funding the European Integrated Project Sustainable Bridges to comply with future traffic demands. The main objective of the project is to reliably assess and upgrade the bridge infrastructure for the required increase of axle loads and transport volume. 32 Institutes from 12 countries develop unified procedures for the assessment and improvement of the existing railway bridge stock under the guidance and review of six major European railway companies.
Non destructive testing (NDT) is given a high priority. One of the work packages concentrates on the potential of advanced NDT-methods and creates a toolbox with advisable methods for the condition assessment of all types of railway bridges. Although NDT-methods are implemented in the quality assurance process in many industries, their application in the railway infrastructure is not common. Only a few countries have included selected NDT-methods into advanced condition assessment procedures for the management of their bridge stock.
This paper describes also current activities to enhance pulse-phase thermography, impulse-radar and acoustic methods. The advanced methods enable infrastructure owners to verify construction plans, to assess structures, repair and strengthening quality or to identify in-service damages. Latest development is an automated scanning system for combined acoustic and electromagnetic measurements. The results are then combined through data fusion techniques to further increase their value for the bridge owners.