Peer-Reviewed Journal Details
Mandatory Fields
Li, GY,He, Q,Mangan, R,Xu, GQ,Mo, C,Luo, JW,Destrade, M,Cao, YP
Journal Of The Mechanics And Physics Of Solids
Guided waves in pre-stressed hyperelastic plates and tubes: Application to the ultrasound elastography of thin-walled soft materials
Optional Fields
Pre-stressed thin-walled soft biomaterials Fluid-loaded plates and tubes Ultrasound elastography Theoretical analysis Finite element simulations Phantom gel experiments INCOMPRESSIBLE ELASTIC PLATE ACOUSTIC RADIATION FORCE LEAKY LAMB WAVES MECHANICAL-PROPERTIES INVERSE METHOD IN-VIVO ARTERIES DIAGNOSTICS STIFFNESS TISSUES
In vivo measurement of the mechanical properties of thin-walled soft tissues (e.g., mitral valve, artery and bladder) and in situ mechanical characterization of thin-walled artificial soft biomaterials in service are of great challenge and difficult to address via commonly used testing methods. Here we investigate the properties of guided waves generated by focused acoustic radiation force in immersed pre-stressed plates and tubes, and show that they can address this challenge. To this end, we carry out both (i) a theoretical analysis based on incremental wave motion in finite deformation theory and (ii) finite element simulations. Our analysis leads to a novel method based on the ultrasound elastography to image the elastic properties of pre-stressed thin-walled soft tissues and artificial soft materials in a non-destructive and non-invasive manner. To validate the theoretical and numerical solutions and demonstrate the usefulness of the corresponding method in practical measurements, we perform (iii) experiments on polyvinyl alcohol cryogel phantoms immersed in water, using the Verasonics V1 System equipped with a L10-5 transducer. Finally, potential clinical applications of the method have been discussed. (C) 2017 Elsevier Ltd. All rights reserved.
Grant Details
Publication Themes