Methods for Nonlinear Ultrasonic Spectroscopy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F04%3APU43542" target="_blank" >RIV/00216305:26220/04:PU43542 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Methods for Nonlinear Ultrasonic Spectroscopy
Original language description
The nonlinear ultrasonic testing is quite prolific method but it has some limitations in practical testing, mainly for inhomogeneous materials. Materials with undamaged structure are essentially linear in their response, while the same material, when damaged, becomes highly nonlinear. In spectrograms is it represented by harmonics and sideband generation. The nonlinear ultrasonic spectroscopy is evolved as a new way to improving the NDT and it offers some new possibilities for the NDT. This is the basisfor nonlinear wave diagnostics of damage, methods which are remarkably sensitive to the detection and progression of damage in materials. This paper offers analysis, principles and basic methods for nonlinear ultrasonic spectroscopy and also contains their limitations.
Czech name
Metody pro Nelineární Ultrazvukovou Spektroskopii
Czech description
Nelinearní ultrazvukové testování je zcela propracovaná metoda, ale má praktické omezení v užití hlavně u nehomogenních materiálů. Materiál s neporušenou strukturu je linearní v odezvě, pokud je poškozena struktura, stává se vysoce nelineární. Ve frekvebnčním spektu je to znát zvýšenou hodnotou vyšších harmonických.

Project
<a href="/en/project/GA205%2F03%2F0071" target="_blank" >GA205/03/0071: Non-linear ultrasonic defectoscopy of solids</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)