Non-linear time reversal ultrasonic pseudo-tomography

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F11%3A00363969" target="_blank" >RIV/61388998:_____/11:00363969 - isvavai.cz</a>

Result on the web

<a href="http://www.inderscience.com/offer.php?id=43216" target="_blank" >http://www.inderscience.com/offer.php?id=43216</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1504/IJMMP.2011.043216" target="_blank" >10.1504/IJMMP.2011.043216</a>

Result language

angličtina

Original language name

Non-linear time reversal ultrasonic pseudo-tomography

Original language description

Nonlinear Elastic Wave Spectroscopy (NEWS) became an effective methodology for NDT of complex structures, providing high sensitivity of damage detection. One of the most promising NEWS procedures is based on Nonlinear Time Reversal Mirrors (NLTRM). General NLTRM procedure is mostly global, which brings difficulties with defect localization. In this paper, a procedure modification is proposed, based on similar arrangement as ultrasonic tomography. Array of transducers is spaced on a structure with defect. Individual piezoelectric transducers subsequently transmit direct signals, which are detected by receivers, then time-reversed and sent back. High-voltage relay multiplexer is used to switch between transmitters and receivers. Matrices of back-receivedsignals and their spectra are analyzed, and their nonlinear features are extracted along all wave-paths. Procedure application is illustrated by NDT of aircraft parts where NLTRM pseudo-tomography is used to allocate defective zones.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BI - Acoustics and oscillation

OECD FORD branch

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Project

<a href="/en/project/FR-TI1%2F274" target="_blank" >FR-TI1/274: *Evaluation of SHM methods and its integration into aircraft maintenance system</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Microstructure and Materials Properties

ISSN

1741-8410

e-ISSN

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Volume of the periodical

6

Issue of the periodical within the volume

3

Country of publishing house

CH - SWITZERLAND

Number of pages

7

Pages from-to

206-213

UT code for WoS article

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EID of the result in the Scopus database

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