MTS Fracture Template - Manual (Page 30)

Constant Load Control Mode Parameters
Constant Load Control Mode Paramters
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 maximum load of the
command signal. FCG End Level 1
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.
This MTS template does not support hold
times or creep-fatigue crack growth testing.
Specify the percent of maximum load level
at which the voltage is measured. All voltage FCG Measure Load Level
Percent
data below this load will not be used to
calculate crack length. This parameter is
used only for FCG DCPD tests.
Data Storage Parameters Properties
Data Storage Parameters
Description Parameter
Specify the percentage of precrack activity
that must complete before data is saved to
disk. Precrack Save Percent
Limit
30 | MTS TestSuite
Fatigue Crack Growth (FCG) Template