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_____%2F10%3A00351999" target="_blank" >RIV/61388998:_____/10:00351999 - 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. Mostly linear characteristics like ultrasonic amplitude, attenuation or time of flight are used to structural defects imaging. On the other hand, more complex and nonlinear characteristics of elastic wave propagation provide more sensitive indicators of body changes and irregularities. Nonlinear Elastic Wave Spectroscopy (NEWS) techniques give us better information about damage with higher sensitivity and also the ability to detect defects smaller than the ultrasonic wavelength. Two NEWS methods are considered: Nonlinear Wave Modulation Spectroscopy (NWMS) and Nonlinear Time Reversal Mirrors (NLTRM) with ESAM and DORT signal processing. Testing results, obtained on metallic and concrete parts illustrate performance of both procedures.
Czech name
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Czech description
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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
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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