dc.creator | Tsiglifis, K. | en |
dc.creator | Pelekasis, N. A. | en |
dc.date.accessioned | 2015-11-23T10:51:32Z | |
dc.date.available | 2015-11-23T10:51:32Z | |
dc.date.issued | 2008 | |
dc.identifier | 10.1121/1.2909553 | |
dc.identifier.issn | 14966 | |
dc.identifier.uri | http://hdl.handle.net/11615/33917 | |
dc.description.abstract | The nonlinear radial oscillations of bubbles that are encapsulated in an elastic shell are investigated numerically subject to three different constitutive laws describing the viscoelastic properties of the shell: the Mooney-Rivlin (MR), the Skalak (SK), and the Kelvin-Voigt (KV) models are used in order to describe strain-softening, strain-hardening and small displacement (Hookean) behavior of the shell material, respectively. Due to the isotropic nature of the acoustic disturbances, the area dilatation modulus is the important parameter. When the membrane is strain softening (MR) the resonance frequency decreases with increasing sound amplitude, whereas the opposite happens when the membrane is strain hardening (SK). As the amplitude of the acoustic disturbance increases the total scattering cross section of a microbubble with a SK membrane tends to decrease, whereas that of a KV or a MR membrane tends to increase. The importance of strain-softening behavior in the abrupt onset of volume pulsations, that is often observed with small insonated microbubbles at moderately large sound amplitudes, is discussed. © 2008 Acoustical Society of America. | en |
dc.source.uri | http://www.scopus.com/inward/record.url?eid=2-s2.0-44949107329&partnerID=40&md5=ccbd31e376c4c0364526f8582e36b2ef | |
dc.subject | Acoustics | en |
dc.subject | Constitutive models | en |
dc.subject | Hardening | en |
dc.subject | Motion estimation | en |
dc.subject | Nonlinear programming | en |
dc.subject | Photoacoustic effect | en |
dc.subject | Resonance | en |
dc.subject | Shells (structures) | en |
dc.subject | Strain hardening | en |
dc.subject | (001) parameter | en |
dc.subject | Acoustic disturbances | en |
dc.subject | Acoustical Society of America (ASA) | en |
dc.subject | Constitutive laws | en |
dc.subject | elastic shells | en |
dc.subject | In order | en |
dc.subject | Kelvin-Voigt | en |
dc.subject | Micro bubbles | en |
dc.subject | Micro-bubbles | en |
dc.subject | Radial oscillations | en |
dc.subject | Resonance frequencies | en |
dc.subject | Shell materials | en |
dc.subject | Strain softening | en |
dc.subject | Strain softening (IGC:F6) | en |
dc.subject | Strain-hardening | en |
dc.subject | Total-scattering cross-section (TSCS) | en |
dc.subject | Visco-elastic properties | en |
dc.subject | Membranes | en |
dc.subject | contrast medium | en |
dc.subject | algorithm | en |
dc.subject | article | en |
dc.subject | elasticity | en |
dc.subject | encapsulation | en |
dc.subject | erythrocyte membrane | en |
dc.subject | Fourier transformation | en |
dc.subject | lipid bilayer | en |
dc.subject | liquid | en |
dc.subject | material state | en |
dc.subject | mathematical model | en |
dc.subject | membrane structure | en |
dc.subject | motion | en |
dc.subject | oscillation | en |
dc.subject | priority journal | en |
dc.subject | sound pressure | en |
dc.subject | stress strain relationship | en |
dc.subject | ultrasound | en |
dc.subject | viscosity | en |
dc.subject | Gases | en |
dc.subject | Microbubbles | en |
dc.subject | Models, Theoretical | en |
dc.subject | Pressure | en |
dc.subject | Statistics as Topic | en |
dc.subject | Ultrasonics | en |
dc.title | Nonlinear radial oscillations of encapsulated microbubbles subject to ultrasound: The effect of membrane constitutive law | en |
dc.type | journalArticle | en |