MTS Fracture Template - Manual (Page 55)

Description Parameter
Specify the time to ramp to the target load. Ramp Time
1. Click Measure Crack Size.
2. Click Run on the control panel to start the crack size check. Optionally, if you want to review or change
parameters, click Return to Main Menu.
3. When finished with this activity, click Close.
Precrack Specimen
1. Click Precrack in the Main Menu window.
2. Click Run on the control panel to start the precrack activity. Optionally, if you want to review or change
parameters, click Return to Main Menu.
To suspend the activity after the activity has started to run, click Hold. When you suspend the activity,
data collection stops and the application attempts to hold at the mean level.
To stop the activity, click Stop. When you stop the activity, the application immediately ramps to zero
load and saves the test data.
3. To review the process of the precrack activity, monitor the runtime displays.
4. Typically, the activity stops when a desired precrack parameter is achieved. In this case, review the
activity end result, and then click Close.
5. Check the precrack results, and if necessary, correct the values.
Run JIC Fracture Toughness Test
1. Perform the crack size check at least three times after precracking the specimen.
This must be done to run the JIC test.
2. Click JIC Test.
3. Click Run on the control panel to start the test activity. Optionally, if you want to review or change
parameters, click Return to Main Menu.
To suspend the activity after the activity starts, click Hold. When you suspend the activity, data collection
stops and the application attempts to hold at the mean level.
To stop the activity, click Stop. When you stop the activity, the application immediately ramps to zero
command and saves the test data.
4. Review the process of the test activity by monitoring the runtime displays.
• Monitor Axial Force, Axial COD, Axial Displacement values.
• Monitor Axial Force versus Time plot.
• Review Summary table.
• Review Statistics table.
MTS TestSuite | 55
JIC Fracture Toughness Template