Spherical indentation of a finite poroelastic coating
نویسندگان
چکیده
منابع مشابه
Spherical indentation testing of poroelastic relaxations in thin hydrogel layers
In this work, we present the Poroelastic Relaxation Indentation (PRI) testing approach for quantifying the mechanical and transport properties of thin layers of poly(ethylene glycol) hydrogels with thicknesses on the order of 200 mm. Specifically, PRI characterizes poroelastic relaxation in hydrogels by indenting the material at fixed depth and measuring the contact area-dependent load relaxati...
متن کاملFinite Indentation of an Elastic Membrane by a Spherical Indenter
Rotatlonally Symmetrie stresses and deformations are considered for a prestressed elastic sheet of circular outer boundary loaded transversely by a centered indenter with a hemispherical tip. A nonlinear membrane solution is obtained for the portion of the sheet that is in frictionless contact with the rigid tip of the indenter. This solution and the solution that was previously obtained for a ...
متن کاملSpherical Indentation and Flow Property Measurement-Finite Element Simulation
Previous work by Au, Lucas, Sheckerd & Odette [1] and Haggag and Lucas [2] and others showed that ball indentation testing techniques can be used to evaluate flow properties. More recently Haggag et al [3] have extended and refined the general approach. This work is aimed at assessing the accuracy and reliability of this method based on finite element analysis (FEA) simulations of the ball inde...
متن کاملIndentation of a Sharp Penetrometer in a Poroelastic Medium
Solution is developed for the build!up\ steady and post!arrest dissipative pore ~uid pressure _elds that develop around a conical penetrometer advanced in a poroelastic medium[ The analog with cone penetrometer testing is direct\ and is used to enable continuous distributions of permeability and di}usivity to be determined\ with depth[ Solution for a point normal dislocation migrating in a poro...
متن کاملPoroelastic relaxation indentation of thin layers of gels
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 met...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2008
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.2957993