MTS Fracture Template - Manual (Page 37)

To stop the activity, click Stop. When you stop the activity, the application immediately ramps to zero
load and saves the test data.
4. To review the process of the test activity, monitor the runtime displays.
5. Typically, the activity stops when a desired test termination parameter is achieved. In this case, review
the activity end result, and then click Close.
Enter Measured Crack Sizes
The software automatically enters the crack sizes from the end of the precrack activity and the crack sizes
from the end of the test. By default, the Precrack values are the last series of crack sizes measured during
the precrack activity and the Crack values are the last series of crack sizes measured during the test.
These crack sizes are used during data analysis. Optionally, you can change these values for the test run.
Measured Crack Size Parameters
Description Parameter
Specify the series of crack measurements made
at the end of the precrack activity. Precrack
Specify the series of crack measurements made
at the end of the test activity. Crack
End Fracture Test
1. When finished with the test run, click Done in the Main Menu window.
2. Click HPU Power Off.
3. In the Series 793 Station Manager application, set the Tools > Channel Options > Command Options
> Setpoint/Span Times back to their previous values before you use it to command the actuator for
other purposes (for example, for specimen removal or installation).
Caution :
Lower Setpoint/Span Times in the Series 793 Station Manager application can cause
specimen or equipment damage.
Decreasing the Setpoint/Span Times default of 2.0 seconds after the test run completes
can be too fast for other actuator commands, and can cause specimen or equipment
damage.
After the fracture test run has completed, set the Setpoint/Span Times in the Station
Manager application back to their previous values before you use it to command the actuator
for other purposes (for example, for specimen removal or installation).
MTS TestSuite | 37
Fatigue Crack Growth (FCG) Template