MTS Fatigue Template - Manual (Page 57)

7.2.2.0 Load Termination Parameters
Load Termination Parameters
Description Item
Specify a number of cycles for the maximum length
of the test. Total Cycles
Specify a number of cycles after which the specimen
is expected to be stable and beyond hardening or
softening. Cycles for Stable
Cycle
Specify a percentage used to calculate stability. Stable Cycle
Percent
Specify a percentage that is used to calculate the
stable strain range and crack initiation. Crack Initiation
Change
Specify a percentage that is used to calculate the
stable load range and specimen failure. Load Failure
Change Percent
Specify a percentage that is used to calculate if the
load control peak occurs outside the control range. Peak Load Level
Control Change
7.2.3.0 Modulus Check at Start Temperature
You should perform a modulus check before you run a test. The standard template allows you to check the
modulus at start temperature and test temperature (for elevated temperature tests). The start temperature
modulus check helps determine if the system is set up correctly. For example, if you have not pulled the zero
pin from your extensometer, the modulus is incorrect. If you type incorrect specimen dimensions, the modulus
is incorrect.
7.2.4.0 Data Storage Parameters
Data Storage Parameters Properties
Description Item
Sets the number of cycles to save to disk at the end
of the test or when the test stops. Ending Cycles
Sets the amount of change that must occur in the
maximum load between saves to disk. Load Storage
Change
Sets the value of N, which is the rate (number) of
peak-valley cycles for a store to disk to occur. For PV Nth Cycle
Stored
MTS TestSuite 57
7.0 ASTM High-Cycle Fatigue (HCF) Load Test Template