Characterizing the elastic shear modulus of a soft medium via a thermally induced elastic shear wave in thermodynamic equilibrium

被引：1
|
作者：
Chang, Sheng-Yi [1 ,2 ]
Lee, Sanboh [3 ]
Chen, Wei-Ru [1 ]
Lee, Ming-Yih [1 ,4 ]
Chou, Chien [1 ,5 ]
机构：
[1] Chang Gung Univ, PhD Program Biomed Engn, Taoyuan 333, Taiwan
[2] Ming Chi Univ Technol, Gen Educ Ctr, Taipei 243, Taiwan
[3] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan
[4] Chang Gung Univ, Dept Mech Engn, Taoyuan 333, Taiwan
[5] Chang Gung Univ, Grad Inst Electroopt Engn, Taoyuan 333, Taiwan
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2018年 / 29卷 / 03期
关键词：
elastic shear modulus; heterodyne interferometry; thermally induced elastic shear wave; MECHANICAL-PROPERTIES; VISCOELASTICITY; PROPAGATION; MICROSCOPE; DEPENDENCE; SCATTERING; LIQUIDS;
D O I：
10.1088/1361-6501/aa9b55
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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 mu Pa on the elastic shear modulus. The features and advantages of the TIESW-based method in comparison to conventional methods are discussed.
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页数：8
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