MTS Multipurpose Simulated - Manual (Page 60)

5.4.2.5.0 Delta K Control Mode Parameters
Delta K Control Mode Parameters
Description Parameter
Specify the ratio of the minimum to maximum
K applied to the specimen. The minimum K FCG Load Ratio
is determined by this value and the maximum
K is specified by you.
Specify the maximum stress intensity (K)
value used in Delta-K control. FCG Delta-K Max
Specify the maximum and minimum stress
intensity change as the crack size changes. Normalized K Gradient (C)
Specify the cycle frequency of the command
signal. FCG Frequency
Specify the wave shape of the command
signal. FCG Wave Shape
The choices are True Sine or True Ramp.
Typically, you use a True Ramp wave shape
where uniform strain-rate sensitivity is
important, and a True Sine wave shape
where a continually varying strain rate is
acceptable because of the higher frequencies
of some tests.
Specify the load level at which the voltage is
measured. This parameter is used only for
FCG DCPD tests. FCG Measure Load Level
5.4.2.6.0 Constant Load Control Mode Parameters
Constant Load Control Mode Parameters
Description Parameter
Specify the ratio of the minimum to maximum
load applied to the specimen. The minimum FCG Load Ratio
load is determined by this value and the
maximum load is specified by you.
Specify the desired end level of the command
signal. FCG End Level 1
60 MTS TestSuite
5.0 Running Simulation Tests