A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Characterization of reflector types by phase-sensitive ultrasonic data processing and imaging
Ultrasonic and radar imaging techniques are limited in resolution by the wavelength in the material, yet information beyond those limits is hidden in complex frequency dependent reflection coefficients. The analysis of the phase of complex reflection coefficients together with the properties of imaging algorithms can help to characterize and to classify indications of defects in concrete buildings. This paper describes a method to extract phase information from measurements and SAFT reconstructed images. The influencing factors like material properties, transducer characteristics, and imaging algorithms based on Born or Physical Optics approximations are elaborated. Simulated and experimental results are briefly discussed.
Characterization of reflector types by phase-sensitive ultrasonic data processing and imaging
Ultrasonic and radar imaging techniques are limited in resolution by the wavelength in the material, yet information beyond those limits is hidden in complex frequency dependent reflection coefficients. The analysis of the phase of complex reflection coefficients together with the properties of imaging algorithms can help to characterize and to classify indications of defects in concrete buildings. This paper describes a method to extract phase information from measurements and SAFT reconstructed images. The influencing factors like material properties, transducer characteristics, and imaging algorithms based on Born or Physical Optics approximations are elaborated. Simulated and experimental results are briefly discussed.
Characterization of reflector types by phase-sensitive ultrasonic data processing and imaging
Charakterisierung von Reflektortypen durch phasenempfindliche Ultraschall-Datenverarbeitung und -abbildung
Mayer, Klaus (author) / Langenberg, Karl-Jörg (author) / Krause, Martin (author) / Milmann, Boris (author) / Mielentz, Frank (author)
Journal of Nondestructive Evaluation ; 27 ; 35-45
2008
11 Seiten, 9 Bilder, 15 Quellen
Article (Journal)
English
Characterization of Reflector Types by Phase-Sensitive Ultrasonic Data Processing and Imaging
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