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Pulse response of a nonlinear layer
Ansvarlig organisasjon
2001 (engelsk)Inngår i: Journal of the Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 110, nr 5, s. 2340-2350Artikkel i tidsskrift (Fagfellevurdert) PublishedAlternativ tittel
Pulssvar från ett ickelinjärt skikt (svensk)
Abstract [en]

A simple analytical theory is developed for the description of non-steady state response of a thin nonlinear layer, which differs markedly in its linear properties from the surrounding medium. Such a layer can model the behavior of real inhomogeneities like a cloud of gas bubbles in a liquid, a crack or split plane in a solid, or the contact between two slightly tighted rough surfaces. Both weakly nonlinear pulse and harmonic responses are calculated and the general properties of the spectral and temporal structure of the scattered field are discussed. The exact strongly nonlinear solutions are derived for a special type of stress-strain relationship corresponding to the behavior of real condensed media under strong load. Profiles and spectra shown are in conformity with experimental results. The pulse response on the short delta-pulse shaped incident wave is calculated for arbitrary nonlinear properties of the layer. The possibilities to apply the sets of data on measured characteristics of pulse response in the solution of inverse problems are briefly discussed.

Abstract [sv]

En enkel analytisk teori för dte transienta svaret från ett tunt ickelinjärt skikt har framtagigts, Det kan beskriva ett flertal verkliga ickelinjariteter såsom bubblor i vatten eller sprickor i solider.

sted, utgiver, år, opplag, sider
2001. Vol. 110, nr 5, s. 2340-2350
Emneord [en]
nonlinear layer, nonlinear pulse response, acoustic layer response, crack response, nonlinear nondestructive testing, nonlinear acoustics
HSV kategori
Identifikatorer
URN: urn:nbn:se:bth-9454ISI: 000172160200011Lokal ID: oai:bth.se:forskinfoE020B08AADC24E06C1256C29003BD583OAI: oai:DiVA.org:bth-9454DiVA, id: diva2:837305
Tilgjengelig fra: 2012-09-18 Laget: 2002-09-03 Sist oppdatert: 2017-12-04bibliografisk kontrollert

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Hedberg, ClaesRudenko, Oleg

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