A method has been developed to measure rapidly and accurately three important material constants of a hydrogel sample. The shear modulus, m, the bulk modulus, k, and the hydraulic permeability, l/f can be determined from a single stress-relaxation experiment. The material constants are treated as free parameters whose values are optimally estimated by minimizing the variance between predicted and empirical force relaxation waveforms. Values of the three constants obtained by this method agree with values obtained by independent free-swelling and permeability measurements.

Agency
National Institute of Health (NIH)
Institute
Division of Research Services (DRS)
Type
Intramural Research (Z01)
Project #
1Z01RS010275-02
Application #
3937333
Study Section
Project Start
Project End
Budget Start
Budget End
Support Year
2
Fiscal Year
1988
Total Cost
Indirect Cost
Name
Research Services
Department
Type
DUNS #
City
State
Country
United States
Zip Code