2022•Mechanics of Advanced Materials and StructuresOpen access

How complex viscoelastic behaviors within a viscoelastic three-layer structure affect the measurement accuracy of ultrasound viscoelastic creep imaging

Che-Yu Lin, Wei‐Chun Chen

Abstract

The purpose of this study is to use finite element computational simulation to investigate the accuracy of ultrasound viscoelastic creep imaging for evaluating the viscoelastic properties of a heterogeneous viscoelastic three-layer structure. The findings suggest that, in general, viscoelastic creep imaging cannot accurately evaluate the viscoelastic properties of each layer of the viscoelastic three-layer structure. Inaccuracy in the evaluation is due to deviation or distortion of the creep curve of each element within the viscoelastic three-layer structure, resulting from the interaction between complicated viscoelastic behaviors of each layer within the viscoelastic three-layer structure.

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Key concepts: Viscoelasticity, Creep, Materials science, Finite element method, Layer (electronics), Ultrasound, Distortion (music), Correspondence principle (sociology)