MTS Fatigue Template - Manual (Page 30)

Description Parameter
The value you specify here represents the slope
value of the material’s stress-strain curve in the
elastic deformation region. Elastic Modulus (E)
Elastic Modulus is a specimen variable that other
variables may use in a calculation.
Specify the stress value at which permanent
deformation occurs. Yield Strength
Yield Strength is a specimen variable that other
variables may use in a calculation.
Specify the temperature at which Elastic Modulus
and Yield Strength are valid. Valid at Temperature
5.2.0 Define Test Parameters
5.2.1.0 Strain Test Parameters
Strain test parameters are entries you make to control the strain test. For tests that use a sine wave command,
strain test parameters include:
• End level 1
• End level 2
• Cycle frequency
The application checks the values you enter to make sure they are within the system capabilities.
5.2.2.0 Strain Termination Parameters
Strain Termination Parameters
Description Item
Specify the number of cycles after which the
specimen is assumed to be stable and beyond cyclic
hardening or softening. Cycles for Stable
Cycle
Specify a percentage that is used to calculate
peak-valley stability. Stable Cycle
Percent
30 MTS TestSuite
5.0 ASTM Low-Cycle Fatigue (LCF) Strain Template