Abstract
A novel method to characterize the elastic shear modulus of an isotropic, homogeneous and extremely soft material based on a thermally induced elastic shear wave (TIESW) under thermodynamic equilibrium at room temperature is proposed. The temporal evolution of the TIESW on the surface of a squared polyvinyl acetate (PVA) specimen is observed, while the oscillation frequency of the TIESW is measured by using a two-frequency polarized heterodyne interferometer. In experiments, the oscillation frequency of the TIESW in PVA specimens is in the range of 10-3 Hz, which is equivalent to μ Pa on the elastic shear modulus. The features and advantages of the TIESW-based method in comparison to conventional methods are discussed.
Original language | English |
---|---|
Article number | 035104 |
Journal | Measurement Science and Technology |
Volume | 29 |
Issue number | 3 |
DOIs | |
State | Published - 08 02 2018 |
Bibliographical note
Publisher Copyright:© 2018 IOP Publishing Ltd.
Keywords
- elastic shear modulus
- heterodyne interferometry
- thermally induced elastic shear wave