..., an adaptation of the Singh–Mitchell creep model for soil, which is a rate process equation, was used to characterize the observed stress–strain–time–temperature response from the constant-stress creep tests over four logarithms of time. The model, which was calibrated using results on ‘new’ geomembranes...

... stress state at the restraining ring to a nearly isotropic, biaxial stress state at the center. To evaluate the influence of the stress state induced during testing on the stress-strain response of geomembranes, strain-controlled multi-axial and wide strip tests were performed on specimens of elastic...

...S.M. Merry; J.D. Bray The geomembrane wide strip tension test is a performance test that provides test data from which the stress-strain response of a geomembrane may be calculated. However, the volumetric response of the geomembrane must be accounted for when processing the test data to obtain...