Using indentation to characterize the poroelasticity of gels

By Yuhang Hu, Xuanhe Zhao, J. Vlassak, Zhigang Suo. 2010

307 citations recorded by the source corpus.

When an indenter is pressed into a gel to a fixed depth, the solvent in the gel migrates, and the force on the indenter relaxes. Within the theory of poroelasticity, the force relaxation curves for indenters of several types are obtained in a simple form, enabling indentation to be used with ease as a method for determining the elastic constants and permeability of the gel. The method is demonstrated with a conical indenter on an alginate hydrogel.

Subfields: Mechanical Engineering, Mechanics of Materials, Molecular Medicine

View Paper: https://www.semanticscholar.org/paper/87a3da67cebe256425837ca9309e3294ea366621

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Mechanical Engineering

1. Rui Huang
2. Zhigang Suo
3. Chad M. Landis
4. Nikolaos Bouklas
5. J. Vlassak
6. Jingda Tang
7. Yanfei Gao
8. T. Y. Ng

In Mechanics of Materials

1. J. Vlassak
2. Zhigang Suo
3. Rui Huang
4. Jingda Tang
5. Chad M. Landis
6. Irene Arias
7. A. Abdollahi
8. Thomas Wick

In Molecular Medicine

1. Zhigang Suo
2. Jingda Tang
3. Nikolaos Bouklas
4. Rui Huang
5. Chad M. Landis
6. J. Vlassak
7. Ruobing Bai
8. Quansan Yang

Citations in the corpus

• Fatigue fracture of tough hydrogels (2017, background): “Shakedown after prolonged cycling The stress-stretch curve of a hydrogel or an elastomer often depends on loading history due to various inelastic processes such as the Mullins effect [37, 38], viscoelasticity [39-43], poroelasticity [42-46] and viscoplasticity [47].”
• Viscoelasticity and Poroelasticity in Elastomeric Gels (2012, background): “The measured relaxation time is on the order of hours.”
• A nonlinear, transient finite element method for coupled solvent diffusion and large deformation of hydrogels (2015, methodology): “…incompressible or nearly incompressible behavior at the initial stage imposes a constraint to the finite element discretization in order to satisfy the Ladyzhenskaya–Babuska–Brezzi (LBB) condition for stability of the mixed method, similar to linear poroelasticity as well as incompressible…”