Poroelastic relaxation indentation of thin layers of gels
نویسندگان
چکیده
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. REPORT DOCUMENTATION PAGE (SF298) (Continuation Sheet) Continuation for Block 13
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