Control Functions - CellScale BioTester User Manual

Control Functions

The BioTester makes it possible to test specimens under several control functions:
Under displacement control:
The true strain function applies the displacement at a constant true strain rate, which
accounts for the current specimen length while the specimen is being stretched.
The ramp function applies the displacement at a constant nominal rate. This is
equivalent to a constant engineering strain or constant velocity.
The sine function applies the displacement according to a sinusoid with the desired
displacement magnitude and duration.
Displacement
True Strain
Under force control:
The step function achieves and maintains the desired force as quickly as possible. The
amount of time it takes to achieve the desired force depends on the material being tested
and the force control settings.
The control mode, load function and load magnitude can be set independently for each of the two
loading directions.
Ramp
Force
Step
BioTester User Manual
Sinusoid
Time
Time
Custom
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