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Dissipative and hysteresis loops as images of irreversible processes in nonlinear acoustic fields
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2011 (engelsk)Inngår i: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 110, nr 5Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Irreversible processes taking place during nonlinear acoustic wave propagation are considered using a representation by loops in a thermodynamic parameter space. For viscous and heat conducting media, the loops are constructed for quasi-harmonic and sawtooth waves and the descriptive equations are formulated. The linear and nonlinear absorptions are compared. For relaxing media, the processes are frequency-dependent. The loops broadens, narrows, and bends. The linear and nonlinear relaxation losses of wave energy are shown. Residual stresses and irreversible strains appear for hysteretic media, and here, a generalization of Rayleigh loops is pictured which takes into account the nonlinearly frequency-dependent hereditary properties. These describe the dynamic behavior, for which new equations are derived.

sted, utgiver, år, opplag, sider
American Institute of Physics , 2011. Vol. 110, nr 5
Emneord [en]
Conducting media, Dynamic behaviors, Frequency-dependent, Hereditary property, Irreversible process, Irreversible strain, Nonlinear absorptions, Nonlinear acoustic fields, Nonlinear acoustic wave propagation, Rayleigh, Relaxation loss, Saw-tooth waves, Thermodynamic parameter, Wave energy
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Identifikatorer
URN: urn:nbn:se:bth-7405DOI: 10.1063/1.3631800ISI: 000294968600042Lokal ID: oai:bth.se:forskinfo1066A0867A6A5B19C12579740037126FOAI: oai:DiVA.org:bth-7405DiVA, id: diva2:835013
Tilgjengelig fra: 2012-09-18 Laget: 2011-12-28 Sist oppdatert: 2017-12-04bibliografisk kontrollert

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Hedberg, ClaesRudenko, Oleg

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