MTS 85X Damper - Manual (Page 27)

Test Setup
Damper System Operation Getting Started 27
Test Setup
Before setting up or operating the test system, the hardware component
configuration must be defined, control settings (or test parameters) should be
calculated, and test setup decisions must be made. This section describes some of
the factors to consider when completing these pre-operation procedures.
Define the hardware
configuration
Defining the test configuration involves determining how the mechanical
components will be set up and what optional fixturing is necessary, These
selections must be made before power is applied to the test system. This is
performed by the operator.
Define the test
parameters
Before defining the test parameters, the test control mode should be known and
the maximum and minimum test forces or displacements should be determined.
The maximum and minimum desired forces/displacements will be used in the
calculation of the detector settings and program scaling. These test parameters
should be defined before beginning the operating procedure. Additional
information can be found in the test controller’s documentation. This is
performed by a specialist.
Select test setup
methods
There are steps in the operating procedure that are optional or that provide
optional setup/adjustment substeps. These include zeroing transducer outputs and
adjusting the servo loop controls. This information should be reviewed and any
necessary setup decisions should be made before beginning the operating
procedure. Usually these steps are prompted for the operator by the test program.
Additional information can be found in the test controller’s documentation. This
is performed by a specialist.
Determine the
crosshead position
For balanced system operation, the load frame crosshead must be positioned so
that the based-mounted actuator piston rod will be at approximately midstroke
when the specimen is installed into its upper and lower fixtures/grips. This is
performed by the operator.