Response variable: ultimate compressive strain
o]) is the slope of the stress-strain curve over small tensile or compressive strains
While the quality of the fits were comparable at small compressive strains
(not shown), at large deformations (third ramp in particular) the purely isotropic biphasic model did not provide a good fit (see Fig.
Compressive strain was applied using a micro-scale compression apparatus.
By plotting the number of kink bands per unit length as a function of compressive strain, the critical compressive strain was determined as shown in Fig.
The local kinkings of lamellae we observed along the principal compressive strain
axis are consistent with those previous data on HDPE; however, it is clear that, in our experiment, the permanent compressive strain
is smaller than that is required to create cooperative lamellar kinkings and to induce plastic shear banding.
where e is the compressive strain
, [Phi] characterizes the composition of a composite.
By using different degrees of compressive strain, it was possible to obtain the full strain history of the samples using this very simple but accurate technique.
As a compressive strain is applied, the angle between the fibril and the r axis varies, the angular variation being characterized by [Alpha].
However, according to the experimental measurements of the volume change due to the compression tests, the dilatation is considerably smaller than the applied compressive strain
So that the longitudinal compressive strains
at this location at the outer surface start decreasing, forming a short wave at this location .
Flattening of curved pipe segments to produce test specimens introduces tensile and compressive strains
that change the subsequent behavior of the sample.
The AlGaAs to aluminum oxide transition is accompanied by volumetric compressive strains
in excess of 6%, sometimes leading to detrimental stress relaxation in the form of delamination or dislocation formation.
The maximum measured tensile strains were negligible, and the maximum measured compressive strains
were less than one percent.
The first was to record the tensile and compressive strains
under a pure shear stress.