Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Computer simulation of ultrasonic non-destructive testing of concrete using the Elastodynamic Finite Integration Technique (EFIT)
This paper presents the computer simulation of ultrasonic non-destructive testing of concrete. The numerical modeling tool uses a geometry generator which generates a surface or volume material model on a discrete grid system in 2-D or 3-D and models the very heterogeneous character of the concrete material which consists in general of cement, a random distribution of several aggregates, and a certain water/air concentration. The propagation of ultrasonic waves in such a random material exhibits a complex mixture of multiple mode conversions and multiple scattering effects as well as absorption effects. In order to model these effects we apply the Elastodynamic Finite Integration Technique (EFIT). For the numerical simulations in 3-D we developed a Message-Passing Interface (MPI) version of our EFIT code. Results are presented by means of time-domain data like snapshots of the ultrasonic wavefield. Appropriate and successful modeling with EFIT can also be utilized by an interactive design procedure for concrete test specimens as well as the synthetic data can serve as a test bed for imaging algorithms like the Fourier Transform-Synthetic Aperture Focusing Technique (FT-SAFT).
Computer simulation of ultrasonic non-destructive testing of concrete using the Elastodynamic Finite Integration Technique (EFIT)
This paper presents the computer simulation of ultrasonic non-destructive testing of concrete. The numerical modeling tool uses a geometry generator which generates a surface or volume material model on a discrete grid system in 2-D or 3-D and models the very heterogeneous character of the concrete material which consists in general of cement, a random distribution of several aggregates, and a certain water/air concentration. The propagation of ultrasonic waves in such a random material exhibits a complex mixture of multiple mode conversions and multiple scattering effects as well as absorption effects. In order to model these effects we apply the Elastodynamic Finite Integration Technique (EFIT). For the numerical simulations in 3-D we developed a Message-Passing Interface (MPI) version of our EFIT code. Results are presented by means of time-domain data like snapshots of the ultrasonic wavefield. Appropriate and successful modeling with EFIT can also be utilized by an interactive design procedure for concrete test specimens as well as the synthetic data can serve as a test bed for imaging algorithms like the Fourier Transform-Synthetic Aperture Focusing Technique (FT-SAFT).
Computer simulation of ultrasonic non-destructive testing of concrete using the Elastodynamic Finite Integration Technique (EFIT)
Computersimulation der Ultraschallprüfung von Beton mittels elastodynamischer Finite-Integrations-Verfahren
Marklein, R. (Autor:in) / Mayer, K. (Autor:in) / Ampha, P. (Autor:in) / Langenberg, K.J. (Autor:in)
2003
9 Seiten, 8 Bilder, 21 Quellen
(Nicht paginiert)
Aufsatz (Konferenz)
Datenträger
Englisch
| British Library Online Contents | 2013
| British Library Online Contents | 2010
Non-destructive testing of concrete by ultrasonic methods
| Engineering Index Backfile | 1963