Sinusoidally-driven unconfined compression test for a biphasic tissue

TL;DR

This paper introduces a sinusoidally-driven compression test for biphasic tissues, providing analytical solutions to better understand their dynamic mechanical behavior under cyclic loading.

Contribution

It presents a novel sinusoidal compression testing method with analytical solutions within a biphasic tissue model, enhancing experimental analysis capabilities.

Findings

Closed-form solutions for integral test characteristics

Applicable to load-controlled and displacement-controlled protocols

Improves understanding of tissue response under dynamic loading

Abstract

In recent years, a number of experimental studies have been conducted to investigate the mechanical behavior of water-saturated biological tissues like articular cartilage under dynamic loading. For in vivo measurements of tissue viability, the indentation tests with the half-sinusoidal loading history were proposed. In the present paper, the sinusoidally-driven compression test utilizing either the load-controlled or displacement-controlled loading protocol are considered in the framework of linear biphasic layer model. Closed-form analytical solutions for the integral characteristics of the compression test are obtained.