Accession Number:

ADA585776

Title:

Poroelastic Relaxation Indentation of Thin Layers of Gels

Descriptive Note:

Journal article

Corporate Author:

PRINCETON UNIV NJ OFFICE OF RESEARCH AND PROJECT ADMINISTRATION

Report Date:

2011-10-24

Pagination or Media Count:

7.0

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, Poissons ratio, and the effective diffusivity. The method is demonstrated with a layer of polydimethylsiloxane immersed in heptane.

Subject Categories:

  • Physical Chemistry
  • Miscellaneous Materials
  • Theoretical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE