Filtern
Erscheinungsjahr
Dokumenttyp
- Vortrag (56)
- Beitrag zu einem Sammelband (27)
- Beitrag zu einem Tagungsband (24)
- Zeitschriftenartikel (5)
- Forschungsbericht (4)
- Posterpräsentation (3)
- Buchkapitel (2)
- Sonstiges (1)
Referierte Publikation
- nein (122) (entfernen)
Schlagworte
- Non-destructive testing (9)
- Monitoring (8)
- Condition assessment (5)
- NDT (5)
- Nondestructive testing (5)
- Active thermography (4)
- Inspection (4)
- Non-Destructive Testing (4)
- Ontology (4)
- Zerstörungsfreie Prüfung (4)
- Bridge (3)
- Bridges (3)
- Concrete (3)
- Debonding (3)
- Infrastruktur (3)
- Moisture (3)
- Quality control (3)
- Railway bridges (3)
- Reliability (3)
- Repair (3)
- Strain measurement (3)
- Strengthening (3)
- Arch bridges (2)
- Automated scanning (2)
- Berlin Main Station (2)
- Bluetooth (2)
- Bluetooth Low Energy (2)
- CFRP-strengthening (2)
- Case study (2)
- Cast iron (2)
- Civil infrastructure (2)
- Concrete bridges (2)
- Cultural heritage (2)
- Data fusion (2)
- Differential displacements (2)
- Erhaltung (2)
- Fatigue life (2)
- Historische Eisenbahnlinien (2)
- Hydraulic levelling system (2)
- Impulse radar (2)
- Inspektion (2)
- Knowledge transfer (2)
- Laser-based displacement measuring system (2)
- Long term monitoring (2)
- NDT-toolbox (2)
- Nondestructive evaluation (2)
- Online data (2)
- Quality assurance (2)
- RSSI (2)
- Rehabilitation (2)
- Strain measurements (2)
- Sustainability (2)
- Thermography (2)
- Vertical displacement (2)
- Web presentation (2)
- Wissenschaftliche Zusammenarbeit (2)
- Acoustic emission (1)
- Acoustic test (1)
- Asphalt (1)
- Assessment (1)
- Automated scanning device (1)
- Automation (1)
- Automation of measurement (1)
- BAM (1)
- BLE Bluetooth low energy (1)
- Bauwerksüberwachung (1)
- Blind / characteristic frequency (1)
- Bluetooth modules (1)
- Bologna process (1)
- Bond behaviour (1)
- Bond defect detection (1)
- Bonding (1)
- Bridge Knowledge (1)
- Bridge assessment (1)
- Bridge condition assessment (1)
- Bridge knowledge (1)
- Bridge repair and strengthening (1)
- Bridge testing (1)
- Brücke (1)
- Brücken (1)
- Buliding materials (1)
- CFRP-Laminate (1)
- CFRP-laminates (1)
- Carbon fibre (1)
- Chloride (1)
- Chloride contamination (1)
- Civil engineering (1)
- Civil structures (1)
- Combination of NDT-methods (1)
- Combination of methods (1)
- Commercial acoustic devices (1)
- Compressive strength (1)
- Concrete specimens (1)
- Construction (1)
- Corrosion (1)
- Corrosion detection (1)
- Crack depth (1)
- Crack propagation test (1)
- DUCON® (1)
- Data acquisition (1)
- Data analysis (1)
- Defect (1)
- Defect localization (1)
- Degradation mechanisms (1)
- Dehnungsmessungen (1)
- Denkmalschutz (1)
- Displacement measurement (1)
- Ductility (1)
- Durability test (1)
- E-modulus (1)
- Effectiveness of repair (1)
- Eisenbahn (1)
- Elastisch gebettete Schiene (1)
- Engineering critical Assessment (1)
- Environment and Energy (1)
- Existing steel structures (1)
- Existing structures (1)
- Experimental approach (1)
- Experimental study (1)
- Fatigue cracking (1)
- Fatigue safety (1)
- Fiber optic sensors (1)
- Fibre optic sensors (1)
- Fibre-optic sensors (1)
- Field measurement (1)
- Field test (1)
- Flexural strengthening (1)
- Flood (1)
- Flood protection (1)
- Flood risks (1)
- Fracture mechanic (1)
- GPR (1)
- Ground penetrating radar (1)
- Ground penetration radar (1)
- Guided waves (1)
- History of education (1)
- Hochbahnviadukt (1)
- Humidity measurements (1)
- Hydrostatic leveling system (1)
- Hydrostatic levelling system (1)
- Imaging (1)
- Impact (1)
- Impact echo (1)
- Impact-echo (1)
- Impulse thermography (1)
- Impulse-Thermography (IR) (1)
- Impulse-thermography (1)
- Inspection procedure (1)
- Iron arch bridge (1)
- Knowledge Representation (1)
- Knowledge representation (1)
- LIBS (1)
- Laboratory Testing (1)
- Laboratory test (1)
- Large scale testing (1)
- Long term corrosion monitoring (1)
- Magnetic powder test (1)
- Materials parameter (1)
- Materials parameters (1)
- Measurement (1)
- Method combination (1)
- Metody diagnostyczne (1)
- Metody zaawansowane (1)
- Micro-reinforcement (1)
- Microwaves (1)
- Mobile elements (1)
- Moisture damping coefficient, (1)
- Moisture measurements (1)
- Mosty kolejowe (1)
- Non destructive testing (1)
- Non-destructive Testing (1)
- Non-destructive testing (NDT) (1)
- Non-destructive testing in civil engineering (1)
- Nuclear structures (1)
- Numerical modeling (1)
- Numerical simulation (1)
- POD (1)
- Periodic monitoring (1)
- Plaster (1)
- Preventive measures (1)
- Probability of Detection (1)
- Probability of detection (1)
- Pulse-phase thermography (1)
- Pulse-phase-thermography (1)
- Quantitative NDT (1)
- Quasi-static and dynamic tests (1)
- RSSI Received Signal Strength Indicator (1)
- Radar-Echo (1)
- Radiographic testing (1)
- Railway Bridges (1)
- Railways (1)
- Rehabilitytion (1)
- Reinforced Concrete (1)
- Reinforced concrete bridges (1)
- Reinforcement corrosion (1)
- Reinforcing steel (1)
- Repair and strengthening (1)
- Requirements for NDE (1)
- Research needs (1)
- Restnutzungsdauer (1)
- Riveted Bridges (1)
- Riveted steel bridges (1)
- Sanierung (1)
- Scanning system (1)
- Schotterfreier Oberbau (1)
- Semantic knowledge management (1)
- Sensor network (1)
- Sensoren (1)
- Silent track (1)
- Stahlbrücken (1)
- State of the art (1)
- Steel bridge (1)
- Steel bridges (1)
- Stereo photogrammetry (1)
- Structural Health Monitoring (1)
- Structure behaviour (1)
- Supervision of CFRP-Strengthening (1)
- Sustainable bridges (1)
- Taxonometry (1)
- Tension test (1)
- Textilfaserverstärkter Beton (1)
- Thermo-scanner (1)
- Tiles (1)
- U-Bahn (1)
- UHPC (1)
- Ultraschall-Echo (1)
- Ultrasonic echo (1)
- Ultrasonic test (1)
- Ultrasonic-echo (1)
- Ultrasound (1)
- Validation (1)
- Voids (1)
- Water dipoles (1)
- Wireless sensor network (WSN), (1)
- Zustandsanalyse (1)
- representation of knowledge (1)
- riveted steel bridges (1)
Organisationseinheit der BAM
Eingeladener Vortrag
- nein (56)
The research project "Ultrasonic Net for Concrete Monitoring (UNeCOM)" aims at developing a methodology for an embedded ultrasonic network for the condition assessment of infrastructure constructions. Civil engineering structures made of concrete, which are located in tectonically active regions or undergo special loading conditions, may require continuous monitoring. It is important to assess the condition of the building and its stability to recognise and classify the effect of a seismic event or evolving damage at early stages before failure occurs. Embedded ultrasonic sensors offer the possibility to detect changes in the material and degradation mechanisms from inside the structure in areas which are difficult or impossible to inspect otherwise. In contrast to conventional ultrasonic testing methods, where the concrete surfaces are scanned with ultrasound probes, this new approach uses sensors, which are embedded into concrete, eliminating the effect of variable coupling conditions between sensors and concrete. This method allows an integral detection of changes in the concrete structure, for example due to seismic activities, to detect mechanical impacts, as well as degradation of the material due to overloading. Such methods have great relevance especially for the monitoring of constructions like power plants, bridges, offshore structures and other structures with high technical safety requirements. The sensor network can be controlled remotely through the internet which is also being used for data transfer. The embedded sensor network is designed to monitor structural damage and concrete degradation globally with high sensitivity.
Nuclear Power Plants have been in operation for ca. 50 years. Based on this experience, non-destructive testing tasks specific to thick and highly reinforced nuclear containment structures have materialized. The performance based Service life extension of existing NPPs also needs a measurement based decision to support continuing the service of the concrete part of the installations.
By nature, concrete is a very durable material and any natural Deterioration processes may take a long time to become critical to the structure. The experience of more than 50 years of service limits the testing tasks to a few ones which are not yet solved.
Research in NDT of concrete structures is performed by many research institutions all over the world with different technical and systematic approaches. Results are mainly obtained on laboratory specimens, sometimes additional field studies are reported. This research takes place independently without coordination and as a result, the outcomes mostly lack full comparability.
Software for data analysis has become indispensable and very powerful. This part of testing needs more attention when it comes to evaluate test results. Validation of NDE solutions is becoming a critical part in concrete structure testing.
Validation is by definition the proof that a customer´s requirements in the test are being met by the testing solution. This includes equipment, personnel qualification and data analysis. In the following tables, the research recommendation Validation is used in the sense, that proof of the performance of existing solutions needs to be adressed. In general, a validation methodology for NDE solutions for concrete testing in itself needs to be researched and established.
Comparability of research also needs an accepted and easily accessible reference. From experience, it is almost impossible to manufacture exact copies of test specimens at different locations. Round Robin tests are therefore needed to evaluate the performance of a test.
Data evaluation is generally done using dedicated software, sometimes Hardware dependant and not interchangeable between systems. Software is ever more increasingly becoming more powerful and sophisticated. An in-depth evaluation needs to address the comparability and validation of Software used for data analysis and evaluation. The vision of a unified software pool for NDE investigations would undoubtedly support research tremendously.
Quantitative NDE is mostly recommended to assess the condition of a structure. However, qualitative data can be very useful, especially for processes which change the material properties or deteriorate the structure (e.g. corrosion of reinforcement). The need for reliable baseline data is a key factor for such monitoring tasks.