Nonlinear Wave Modulation and Time Reversal Tomography of Structural Defects

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F09%3A00334340" target="_blank" >RIV/61388998:_____/09:00334340 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Nonlinear Wave Modulation and Time Reversal Tomography of Structural Defects

Original language description

Classical ultrasonic tomography generally uses source signals of constant amplitude. Linear characteristics like amplitude attenuation or time of flight of elastic waves traversing a body in different directions are evaluated and used to localization andimaging of relatively large structural defects. The main advantage of nonlinear methods is their high sensitivity and ability to disclose defects smaller than ultrasound wavelength. Some limitations are connected with difficulties of defects location. To overcome these constraints, further modifications of NEWS, referred as nonlinear tomography procedures, are discussed in this paper. Two NEWS techniques are considered: Nonlinear wave modulation (NWMS) and nonlinear time reversal (NLTR), both using transducer arrays, allowing localization of damaged zones. Extracted nonlinear parameters are dependent on the wave paths along damaged zones, which allows zonal imaging of defects.

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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

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

Name of the periodical

NDT Welding Bulletin

ISSN

1213-3825

e-ISSN

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Volume of the periodical

19

Issue of the periodical within the volume

3

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

5

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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