Abstract
Ultrasonic scanning and array imaging of the subsurface materials features is commonly used for nondestructive evaluation (NDE) and nondestructive materials characterization (NDC). Formation and interpretation of the ultrasonic scan images is often complex and hidden process involving signal processing and wave propagation issues. The signal propagation time and acoustical signal loss are utilized to develop acoustical image maps of a material. In modern composites and in multi-layer complex structures, the image presentation and data interpretation is dependent on proper acoustical signal analysis and processing. Frequency dependent attenuation and sound path distortion due to material in-homogeneity directly influence imaging process. Furthermore, different scanning transducer types render different acoustical information and imaging fidelity (1,2). This paper reviews historical development of acoustical imaging such as C-scan and evolution of conventional immersion and contact ultrasonic imaging methods.
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B. B. Djordjevic, „Advanced Ultrasonic Probes for Scanning of Large Structures“, Proc. Ultrasonic International 93 Vienna, Austria, July 1993, Pub. Butterworth Heinemann 1993
B. B. Djordjevic, Henrique Reis, editors, G Birnbaum, B. A. Auld, Technical editors, „Sensors for Materials Characterization, Processing, and Manufacturing“ ASNT Topics on NDE Vol. 1, published by ASNT, Columbus OH, 1998.
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© 2003 Springer-Verlag Berlin Heidelberg
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Djordjevic, B.B. (2003). Acoustic Imaging for Materials Characterization. In: Green, R.E., Djordjevic, B.B., Hentschel, M.P. (eds) Nondestructive Characterization of Materials XI. Advances in the statistical sciences, vol 6. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-55859-7_2
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DOI: https://doi.org/10.1007/978-3-642-55859-7_2
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