ARES-G2 Getting Started Guide
Page 72
Creating a Procedure
The ARES-G2 is capable of performing a number of tests individually, oscillation, step (transient), and
flow tests. These tests are organized under the following test types categories. (For detailed information,
please consult the online help available through TRIOS.)
•
Oscillation
: In oscillation experiments, the material is subjected to a sinusoidal shear deformation.
The material functions that are obtained are dependent on frequency.
•
Flow
: In flow tests, the input stress, strain, or strain rate are step or ramp functions in time. The results
in flow experiments are obtained from the steady state or quasi-steady state material response.
•
Step (Transient)
: A step test increments to a target value of stress (creep), strain (stress relaxation), or
strain rate, and measures the response as a function of time.
•
Other
•
Extensional Test
: The typical deformation applied by a rotational rheometer is the shear deforma-
tion. The special extensional fixture, EVF, transforms the rotational movement of the rheometer
into a uniaxial extension deformation in the sample. Some uniaxial extension deformation can also
be performed by driving the stage at the desired strain rate. The EVF winds up a sample film on
both sides, this achieves large total deformation of approximately 50times the original length. The
deformation is measured in Hencky strain (logarithmic measure).
•
Axial Test
, which includes the linear/exponential motion of the stage or constant force on the sam-
ple for compressive or tensile testing on a sample.
•
Arbitrary Waveform Test
, which allows defining the strain history used to deform the sample by
supplying one or more analytical equations for strain, as a function of time.
