energy release rate, [G.sub.IC] was calculated using the integrated area of stress-strain curve obtained in the SEN3PB test.
Surprisingly, a sharp upturn in the modulus is observed to occur after a critical strain
Typically, oscillatory strain sweeps serve to identify the critical strain
corresponding to the boundary between linear and nonlinear viscoelastic behavior.
This relationship allows, by testing specimens having a crack depth ranging from 0.2 to 0.7 (a/W), calculation of the critical strain
energy release rate [G.sub.IC] for unstable fracture from the slope of the U vs.
By observing the compression failure in the optical microscope and by noting the critical strain
for this failure, the critical compressive stress could be obtained.
In the present study, the resistance of plastics to ESC was first evaluated by critical strain
using many kinds of agents in everyday use, such as detergents, oils, and seasonings.
The strain at which the debond propagation occurs, the critical strain
, is used to calculate the critical strain
energy release rate, [G.sub.c], of the system.
They define the transition as the critical strain
rate above which the deformation is dominated by crazing for a given temperature.
In our model we propose that phase inversion occurs at a critical strain
[[gamma].sub.c], in the major component.
The strength of fusion bonds between polyamide 12 plaques has been investigated as a function of processing conditions, using the double cantilever beam geometry to measure the mode I critical strain
energy release rate, [G.sub.C].
The onset of strain hardening for all long chain branched LDPEs as well as for linear LLDPE occurs at the same value of the critical strain
, which is independent of temperature or deformation rate.
Estimating Fracture Toughness Using Tension or Ball Indentation Tests and a Modified Critical Strain
Model, The American Society of Mechanical Engineers, Innovative Approaches to Irradiation Damage, and Fracture Analysis, 170: H00485.