Filtern
Erscheinungsjahr
Dokumenttyp
Sprache
- Englisch (25)
- Deutsch (8)
- Mehrsprachig (1)
Schlagworte
- Monitoring (5)
- Faseroptische Sensorik (3)
- Fibre-optic sensor (3)
- Reliability (3)
- Bonding behaviour (2)
- Concrete composites (2)
- Fibre Bragg grating (2)
- Long-term stability (2)
- Maintenance (2)
- Pressure sensor (2)
- Railway track system (2)
- Strain (2)
- Verteilte Messverfahren (2)
- Acoustic emission (1)
- Actuators (1)
- Adaptives mathematisches Modell (1)
- Bauteilmonitoring (1)
- Bauwerksüberwachung (1)
- Bending (1)
- Bond (1)
- Chemischer Angriff (1)
- Composite materials (1)
- Composite structures (1)
- Concrete (1)
- Concrete beam (1)
- Condition diagnostics (1)
- Damage detection of bridges (1)
- Deformation measurement (1)
- Dehnungsmessung (1)
- Digital image correlation (1)
- Distributed fibre optic sensor (1)
- Distributed fibre optic sensors (1)
- Durability (1)
- Dynamic length and power management (1)
- Dynamic load test (1)
- ECD-Aktorschicht (1)
- EFPI (1)
- Early damage detection (1)
- Electrochemical deposition (ECD) (1)
- Embedded sensor (1)
- Embedded sensors (1)
- Extrinsic Fabry-Perot interferometer (1)
- Fabry-Pérot interferometer (1)
- Faser-Bragg Gitter (1)
- Faseroptik-Sensoren (1)
- Faseroptische Dehnungssensoren (1)
- Fiber Bragg grating (FBG) (1)
- Fiber Bragg gratings (1)
- Fiber bragg grating (1)
- Fiber optical sensing (1)
- Fiber-optic sensor (1)
- Fiber-optic sensors (1)
- Fibers (1)
- Fibre Fabry-Pérot interferometer (1)
- Fibre bragg grating (1)
- Fibre optic sensing (1)
- Fibre optic strain sensor (1)
- Finite element methods (1)
- Gas storage areas (1)
- Geotechnical application (1)
- Geotechnical soil stability (1)
- Geotechnics (1)
- Harsh impacts (1)
- I-OFDR (1)
- Lagrange multiplier test (1)
- Large scale soil test field (1)
- Magnetic field (1)
- Magneto-optischer Sensor (1)
- Magnetostrictive metal coating (1)
- Magnetostriktive Beschichtung (1)
- Membrane-based gas sensing (1)
- Modeling and simulation (1)
- Nickel-/Nickel-Eisen- Magnetostriktion (1)
- Offshore application (1)
- Optical backscatter reflectometry (1)
- Optical fibers (1)
- Optical fibre (1)
- Optical fibre sensor (1)
- Optical fibre strain-sensor (1)
- PVD-Haftfestigkeit (1)
- Pile integrity test (1)
- Precise deformation measurement (1)
- Quasi-distributed (1)
- Quasi-verteilte Messverfahren (1)
- RFID technology (1)
- Rayleigh Rückstreuung (1)
- Rayleigh backscattering (1)
- Repair (1)
- Rissbildung (1)
- SHM (1)
- Schadensdetektion (1)
- Schadensfrüherkennung (1)
- SealWasteSafe (1)
- Selbstkalibrierung (1)
- Self-diagnostic fiber optical sensor (1)
- Sensor characteristics (1)
- Soil deformation modelling (1)
- Soil stability monitoring (1)
- Standardization (1)
- Static load test (1)
- Stereophotogrammetry (1)
- Strain sensor (1)
- Strain transfer (1)
- Structural Health Monitoring (1)
- Structural health monitoring (1)
- Structural health monitoring (SHM) (1)
- Structure integrated sensor (1)
- Strukturschädigung (1)
- Subsurface monitoring (1)
- Swept wavelength interferometry (SWI) (1)
- Temperaturmessung (1)
- Textile reinforced concrete (1)
- Validation (1)
- Verpressanker (1)
- alkali-activated material (1)
Organisationseinheit der BAM
- 8 Zerstörungsfreie Prüfung (8)
- 8.6 Faseroptische Sensorik (7)
- 8.1 Sensorik, mess- und prüftechnische Verfahren (4)
- 6 Materialchemie (2)
- 6.7 Materialsynthese und Design (2)
- 3 Gefahrgutumschließungen; Energiespeicher (1)
- 3.0 Abteilungsleitung und andere (1)
- 7 Bauwerkssicherheit (1)
- 7.1 Baustoffe (1)
- 7.4 Baustofftechnologie (1)
Characterization of bond performance of textiles in cement matrices using fiber optic sensors
(2002)
Health monitoring von größeren Strukturen erfordert die Betrachtung der gesamten Struktur, indem sowohl jener Bereich, der experimentell behandelt wird, als auch derjenige, der einer analytischen mechanischen Untersuchung unterzogen wird, in einem Gesamtzusammenhang erfasst wird. Die umfassende Behandlung des Problems gelingt dann in einer Gesamtmatrix, die im Beitrag vorgestellt wird. Auf eine Erweiterung der Methode zur Detektierung anwachsender Schädigungen wird hingewiesen.
Fibre-reinforced plastics (FRP) especially carbon-fibre-reinforced polymer (CFRP) and glass-fibre-reinforced polymer (GFRP) are commonly used materials in high pressure vessels and storage units for automotive and aerospace purposes. Optical fibres are suitable to be integrated or directly applied to the surface of FRP components. Using optical fibres it is possible to monitor the distributed strain profiles and changes within the fatigue life of a pressure vessel to ensure the operational safety. Within artificial ageing experiments we used swept wavelength interferometry (SWI) based distributed strain sensing for the monitoring of commercial high-pressure composite cylinder. This artificial ageing was performed using test conditions of 503bar pressure load (service pressure 300 bar) and 89 °C for 100 h. The polyimide coated optical fibres were glued to the surface externally in circumferential and axial direction. Using distributed strain sensing (DSS) material expansion of over 0.5% were monitored with sub-centimetre spatial resolution. Within the circumferential direction we observed up to 10 % local fluctuation compared to the median strain caused by inhomogeneous material expansion, which could cause local material fatigue. In addition, we determined material degradation manifested itself as localized remaining material expansion and/or contraction. Results have been validated by other non-destructive methods like digital strip projection.