Data-driven characterization of viscoelastic materials using time-harmonic hydroacoustic measurements

Article Materials Science, Multidisciplinary

Identification of the viscoelastic properties of a hydrogel in sol-gel transition by vibration experiments

Stanislas Le Guisquet et al.

Summary: This study characterizes the viscoelastic properties of a hydrogel in sol-gel transition by measuring the vibration response of a rigid circular cylindrical container's bottom silicone membrane. A finite-element numerical model was built for identification of the hydrogel's storage shear modulus and loss tangent. It was found that membrane vibration can be used to characterize the viscoelastic mechanical properties of a hydrogel in sol-gel transition in a more versatile way.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2023)

添加到收藏夹

Article Engineering, Biomedical

Viscoelasticity of human descending thoracic aorta in a mock circulatory loop

Giulio Franchini et al.

Summary: In this study, healthy human descending thoracic aortas were tested in a mock circulatory loop to measure their mechanical response to physiological pulsatile pressure and flow. The viscoelastic properties and dynamic stiffness ratio of the aortic segments were investigated, while the shape of the deformed aorta under static and dynamic pressure was measured by image processing. Layer-specific experiments were also conducted to identify the mass density of the aortic tissue.

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS (2022)

添加到收藏夹

Article Engineering, Biomedical

Viscoelastic characterization of human descending thoracic aortas under cyclic load

Giulio Franchini et al.

Summary: This study aimed to characterize the nonlinear viscoelastic properties of ex-vivo human descending thoracic aortas by measuring hysteresis loops of physiological amplitude under harmonic strain. The results suggest the necessity of characterizing the viscoelastic material properties of the aorta under physiological conditions, as well as the introduction of improved models that take into account the influence of initial pre-stretch and amplitude of the cyclic load.

ACTA BIOMATERIALIA (2021)

添加到收藏夹

Article Engineering, Mechanical