An Estimation of Dynamic Properties of Viscoelastic Materials via Inverse Analysis on Inertial Micro Cavitation

From a medical engineering point of view, dynamic properties viscoelastic materials in high strain rate region (> 103 s −1) are considerably important for understanding influences recent minimally invasive surgical techniques with lasers, ultrasounds, and shock waves on biological tissues. In this article, new rheological method via inverse analysis laser-induced inertial micro cavitation phenomena the is constructed to overcome limits conventional macroscopic / microscopic rheometries region. following, visualization system enabling high-speed imaging induced by high-energy pulsed laser arranged, equations motion specific constitutive laws formulated describe corresponding dynamics. Furthermore, suitable objective function designed numerical optimization procedures proposed. Polyvinyl alcohol hydrogels (PVA-H) different mass concentrations, which well known as simulated tissues, employed test materials. As result, it confirmed that present located region, possible be estimated PVA-H samples within moderate deviation ranges.