Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Three dimensional imaging of concrete structures using ultrasonic shear waves
Advancements in the studies of stress waves propagation principles and improvements in the everchanging world of computers have lead to the development of advanced hardware and analysis methods capable of generating 2D and 3D tomographic images of concrete structures in a similar manner as is performed with medical MRI field. The Ultrasonic shear wave test method, commercially known as MIRA was used in two real life structures to determine on one case the presence of large voids in a reinforced concrete tunnel liner and on the second case, the presence of grout in a splice sleeve connector between precast concrete wall panels. In both cases the interpretation of the MIRA images were confirmed with exploratory openings. To date, the MIRA system has been successfully used to locate voids, delaminations, poorly consolidated concrete, air voids in grouted post-tensioned cable duct systems, etc. Some of the main advantages of the MIRA test system is its portability, the ability to collect data in a fairly rapid manner, and more important the ability to generate 2D and 3D images in just a few second after completing the data collection. The disadvantage of the MIRA system is that it is still a new test system that is not widely used yet, and therefore, not enough information about test experiences in concrete applications is available.
Three dimensional imaging of concrete structures using ultrasonic shear waves
Advancements in the studies of stress waves propagation principles and improvements in the everchanging world of computers have lead to the development of advanced hardware and analysis methods capable of generating 2D and 3D tomographic images of concrete structures in a similar manner as is performed with medical MRI field. The Ultrasonic shear wave test method, commercially known as MIRA was used in two real life structures to determine on one case the presence of large voids in a reinforced concrete tunnel liner and on the second case, the presence of grout in a splice sleeve connector between precast concrete wall panels. In both cases the interpretation of the MIRA images were confirmed with exploratory openings. To date, the MIRA system has been successfully used to locate voids, delaminations, poorly consolidated concrete, air voids in grouted post-tensioned cable duct systems, etc. Some of the main advantages of the MIRA test system is its portability, the ability to collect data in a fairly rapid manner, and more important the ability to generate 2D and 3D images in just a few second after completing the data collection. The disadvantage of the MIRA system is that it is still a new test system that is not widely used yet, and therefore, not enough information about test experiences in concrete applications is available.
Three dimensional imaging of concrete structures using ultrasonic shear waves
Dreidimensionale Abbildung von Betonbauten mittels Ultraschall-Transversalwellen
De La Haza, Aldo O. (Autor:in) / Germann Petersen, Claus (Autor:in) / Samokrutov, Andrey (Autor:in)
2008
11 Seiten, 13 Bilder, 8 Quellen
(nicht paginiert)
Aufsatz (Konferenz)
Datenträger
Englisch
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