CellScale BioTester User Manual page 28

BioTester User Manual
Graph Data
Force versus Time
This graph shows how the measured X and Y forces
are changing with time. Peak loads per cycle,
differences in load between the X and Y axes, and
force relaxation are all easily seen in this type of graph.
Force is proportional to nominal (engineering) stress.
Displacement versus Time
This graph shows how the rakes are moving with time.
The phases of the test sequence and size adjustments
due to preloading are readily apparent in this type of
graph. Displacement is proportional to nominal
(engineering) strain.
Force versus Displacement
This graph displays a qualitative representation of the
material behavior. Viscoelastic effects (like hysteresis)
and material response to different loading phases are
apparent in this graph. This graph is proportional to a
nominal (engineering) stress-strain graph.
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