Poroelastic Relaxation Indentation of Thin Layers of Gels

Abstract

We develop a method of poroelastic relaxation indentation (PRI) to characterize thin layers of gels. The solution to the time-dependent boundary-value problem is obtained in a remarkably simple form, so that the force-relaxation curve obtained by indenting a gel readily determines all the poroelastic constants of the gel-the shear modulus, Poisson's ratio, and the effective diffusivity. The method is demonstrated with a layer of polydimethylsiloxane immersed in heptane.

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Document Details

Document Type
Technical Report
Publication Date
Oct 24, 2011
Accession Number
ADA585776

Entities

People

  • Edwin P Chan
  • Joost J Vlassak
  • Yuhang Hu
  • Zhigang Suo

Organizations

  • Princeton University

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Value Problems
  • Chemistry
  • Computational Science
  • Constitutive Equations
  • Copyrights
  • Diffusivity
  • Engineering
  • Equations
  • Integral Equations
  • Materials
  • Materials Science
  • Molecular Dynamics
  • Physics
  • Polymer Chemistry
  • Polymers
  • Shear Modulus

Readers

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