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Acoustic wave focusing in complex media using Nonlinear Time Reversal coded signal processing
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SYSNO ASEP 0438674 Document Type A - Abstract R&D Document Type Není vybrán druh dokumentu Title Acoustic wave focusing in complex media using Nonlinear Time Reversal coded signal processing Author(s) Dos Santos, S. (FR)
Dvořáková, Zuzana (UT-L)
Lints, M. (EE)
Kůs, V. (CZ)
Salupere, A. (EE)
Převorovský, Zdeněk (UT-L) RIDNumber of authors 6 Source Title 11th European Conference on Non-Destructive Testing (ECNDT 2014), Book of abstracts. - Brno : University of Technology, 2014 - ISBN 978-80-214-5019-6
S. 144-145Number of pages 2 s. Publication form Medium - C Action European Conference on Non-Destructive Testing (ECNDT 2014) /11./ Event date 06.10.2014-10.10.2014 VEvent location Praha Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords ultrasonic testing (UT) ; signal processing ; TR-NEWS ; Nonlinear Time Reversal ; NDT ; nonlinear acoustics Subject RIV BI - Acoustics Institutional support UT-L - RVO:61388998 Annotation Recent ten years have seen considerable development (both in numerical and experimental aspects) of optimized signal processing methods for improving Non Destructive Testing (NDT) methods derived from Nonlinear Elastic Wave Spectroscopy (NEWS). The classical NEWS methods are supplemented and improved by new excitations having the intrinsic property of enlarging frequency analysis bandwidth and time domain scales. This is the case of TR-NEWS, recognized as a useful tool for microcracks detection of various complex samples, but also for nonlinear scatterers localization. Associate TR-NEWS experiments have been validated by the large number of simulation results supporting procedure reliability. In this contribution, we concentrated on signal processing and statistical analysis of a NEWS based microdamage imaging technique, which is believed to be a good candidate for sensitive imaging of nonlinear scattering zones. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2015
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