MTS Fracture Template - Manual (Page 69)

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 the KIC Fracture Toughness Test
1. Click KIC Test.
2. Review the parameters.
a) Click Yes to start with the parameters that are shown.
b) Click No to return to the main menu, change parameters, and click KIC Test.
3. Click Run on the control panel to start the 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
load and saves the test data.
4. Review the process of the test activity by monitoring the runtime displays.
• On the KIC Test tab, monitor Force versus COD plot.
• On the KIC Data tab, monitor Time, Force, COD, and Displacement values in the array table.
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.
MTS TestSuite | 69
KIC Fracture Toughness Template