Test termination parameters – MTS Fracture Template User Manual

Page 31

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Description

Parameter

Specify the cycle intervals written to disk
during the precrack activity.

Store Every Nth Precrack
Cycle

Specify the amount of crack length change
that will cause data to be stored to disk.

Crack Size Change Store

Typically, operators will not store every cycle,
but will only store data when the crack grows
by a significant amount, such as 0.05 mm.

Specify the lower load limit for linear least
squares fit compliance used to determine

FCG Lower Least Squares
Fit Percentage

when to start saving data to disk. This
parameter is not used for FCG DCPD tests.

Specify the upper load limit for linear least
squares fit compliance used to determine

FCG Upper Least Squares
Fit Percentage

when to start saving data to disk. This
parameter is not used for FCG DCPD tests.

Specify the cycle intervals written to disk
during the test. Typically, this is more than
10,000.

FCG N Cycle Save

Test Termination Parameters

Test Termination Parameters

Description

Parameter

Specify the crack size limit that, if exceeded,
ends the test.

FCG Final Crack Limit

Specify the crack growth rate limit that, if
exceeded, ends the test.

FCG Crack Growth Rate
Limit

Specify the number of times the FCG Crack
Growth Rate Limit
can trip before the MPE
application ends the test.

Outside Crack Growth
Limits Allowed

Specify the maximum number of cycles to
run before the test ends. This parameter is
not used for FCG DCPD tests.

FCG Cycle Limit

MTS TestSuite | 31

Fatigue Crack Growth (FCG) Template

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