Brookfield Engineering Labs., Inc.
Page 52
Manual No. M13-167-A0415
Torque Reduction
Torque Reduction
is percentage change in torque value between successive data points. That is, the
material yields or begins to break down and, as a result, the measured incremental torque begins to
decrease. A value of 100% for this parameter causes the test to stop as soon as there are no torque
increases during a base time increment. Some users may wish to see a drop in torque after the
yield point. Setting this parameter to values greater than 100% allows data to be collected after the
yield point by the EZ-Yield
TM
software so the decrease in torque may be more easily visualized.
However, this will also affect the calculated yield stress value.
TIP: Brookfield recommends a torque reduction value of 100%.
Yield Limits
These stress values can be used as a Quality Control tool. If the resulting yield stress from a test
falls outside these limits, an appropriate message is displayed and printed with the results. Entering
zero (0) for both these parameters disables this QC feature.
Instructions
Record specific instructions to the operator. This information will be presented immediately
when the program is Run (see Figure IV-6). The operator is required to acknowledge the message
before the program will continue.
Figure IV-6
TIP: If the operator selects “Do not show this message again” within the Instructions message
box, then Instructions will no longer be displayed for any test. This condition can be
reset to allow Instructions to be displayed in the Display section of User Settings
.
TIP: Instructions can be viewed during the test by selecting instructions (more/less bar) in
the View Test screen.
Save Path
Define the memory location (internal or USB Flash Drive) where the Test Results will be saved.
TIP: Selecting a data path can help to organize data storage in the internal memory of the
DV3T. By preselecting the data path, operators are directed to put the data from specific
tests into specific areas.
TIP: If you select a data path that includes a USB Flash Drive location and the Flash Drive
has been removed, an error message will be displayed.
