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Der große Vorteil der vorgestellten Methode liegt in der quasi on-line Bereitstellung der Ergebnisse und in der Möglichkeit des Einsatzes direkt am Bauwerk. Die vorliegenden Meßergebnisse zeigen den erfolgreichen Einsatz von LIBS zur Messung der Betonzusammensetzung. Eine Unterscheidung von Zementen gelingt durch die Einordnung der Meßwerte ins Dreistoffdiagramm.
Neue kleine Laser, handliche Echellespektrographen und neuartige Lichtleiter lassen sich zu mobilen LIBS-Apparaturen kombinieren, die eine Messung undAuswertung vor Ort ermöglicht.
BAM NDT-CE Stepper
(2006)
Automated NDE of post-tensioned concrete bridges using radar, ultrasonic echo and impact-echo
(2006)
Automated NDE of post-tensioned concrete bridges using radar, impact-echo and ultrasonic echo
(2006)
Assessment of Post Tensioned Concrete Bridges Applying Automated Non-Destructive Testing Systems
(2005)
Assessment of post tensioned concrete bridges applying automated non-destructive testing systems
(2006)
The presentation is #4 of the lecture series within the CE5390 NDT&E Course at the “University of Texas at El Paso”, USA (UTEP):
1. Application of NDT to Transportation Infrastructure
2. Application of NDT to Pavements
3. Application of NDT to Tunnels
4. Application of NDT to Nuclear Structures
5. Ultrasonic Methods
6. Electrical Resistivity (ER)
7. Galvanostatic Pulse Measurement (GPM)
8. Half-Cell Potential (HCP)
9. Ground Penetrating Radar (GPR) to Infrastructure
10. Ground Penetrating Radar (GPR) to Pavements
11. Impact Echo (IE)/Ultrasonic Surface Waves (USW)
12. Infrared Thermography (IR)
13. Magnetic Flux Leakage (MFL)
14. Ultrasonic Tomography (UST)
15. Falling Weight Deflectometer/Light Weight Deflectometer
16. Spectral Analysis of Surface Wave
17. Traffic Speed Deflectometer
18. Integrity of Foundations
19. Integration of Technologies
Applications of NDT for nuclear structures are presented with an overview over the special challenges for NDE in this area.
The lecture was held as a webinar on August 29, 2017
Our aim is the application of LIBS as a simple, quasi on-line method for the non-destructive testing of concrete. Concrete is naturally inhomogeneous. Therefore we must take into account the local variation of the element composition using a statistical analysis. Depending on how much cement and aggregate is measured with each laser pulse, a scan on the surface of a concrete specimen produces a distribution of points in the Rankin diagram which is used to characterise the concrete.
Application and Case Studies
(2010)