Design of method for nonlinear shear modulus measuring in gel-like medium by applying an additional static stress to an acoustic resonator

Авторы: Milan Saga, Krit Timofey B., Sagova Zuzana, Asfandiyarov Shamil A., Andreev Valery G., Yakimovich Boris A., Kuvshinov Vladimir V.
Журнал: MM Science Journal
Номер: 5
Год издания: 2022
Издательство: MM Publishing s.r.o.
Местоположение издательства: Prague, Czech Republic
Первая страница: 6134
Последняя страница: 6138
DOI: 10.17973/mmsj.2022_12_2022148
Аннотация: Measurements of the nonlinear parameter of a gel-like medium were carried out in an acoustical resonator fixed without slipping between two solid-state boundaries. A sample of thickness L is fixed on an oscillating plate (x = 0). The other plate of finite mass on the free surface of the sample (x = L) moves together with this surface. By changing the mass of the plate (x = L), it is possible to achieve additional static deformation of the resonator up to 65%. The dynamic method assumes measuring resonance curves at various static deformations. Nonlinear properties appear at deformations of more than 20%. The nonlinear parameter and shear modulus measured dynamically were compared to static measurements where the dependence becomes nonlinear at strains greater than 30%. The static values of the shear modulus and the nonlinear parameter correspond to the values obtained in the dynamic method within an error.
Добавил в систему: Крит Тимофей Борисович

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