3-3
Testing a Sample
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12. Ensure that limits are set for each transducer (extension, load, strain and user-defined)
required by the test method. Refer to “Set the limits for a transducer” on page 3-12).
13. Balance each transducer configuration required by the test method. Refer to “Balance a
transducer” on page 3-12. If the method has this function assigned to a soft key, click
the Balance soft key or the Balance all soft key.
14. Install the specimen into the grips. Refer to the documentation provided with the grips
for details.
15. Check that the specimen is aligned properly in the grips.
16. Start the test by pressing the
START button on the control panel or by clicking the Start
button in the Bluehill test workspace.
The test method may also include a start test parameter that may automatically start a
test when specified criteria are satisfied. Review the Test Control > Start Test screen
to verify how the test should start.
Hazard - do not allow more than one person to operate a testing machine.
Operator injury may result if more than one person operates the testing machine. For
example, injury can occur if one person moves the crosshead or actuator while the other is
working inside the hazard area between the grips or fixtures.
Crush hazard - take care when installing or removing a specimen, assembly, structure
or load string component.
Installation or removal of a specimen, assembly, structure or load string component involves
working inside the hazard area between the grips or fixtures. When working in this area,
ensure that other personnel cannot operate any of the system controls. Keep clear of the jaws
of a grip or fixture at all times. Keep clear of the hazard area between the grips or fixtures
during actuator or crosshead movement. Ensure that all actuator or crosshead movements
necessary for installation or removal are slow and, where possible, at a low force setting.
Flying Debris Hazard - Make sure that test specimens are installed correctly in grips
or fixtures in order to eliminate stresses that can cause breakage of grip jaws or
fixture components.
Incorrect installation of test specimens creates stresses in grip jaws or fixture components
that can result in breakage of these components. The high energies involved can cause the
broken parts to be projected forcefully some distance from the test area. Install specimens in
the center of the grip jaws in line with the load path. Insert specimens into the jaws by at
least the amount recommended in your grip documentation. This amount can vary between
66% to 100% insertion depth; refer to supplied instructions for your specific grips. Use any
centering and alignment devices provided.
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