MTS Multipurpose Elite - Manual (Page 250)

Example 1
CurveArea (_Load, SlackExt, 0 , SizeOfArray(_Load)-1)
This formula calculates the area under the entire Load versus Extension curve.
Example 2
CurveArea (_Load, SlackExt, 0, Peak)
This formula calculates the area under the Load versus Extension curve up to the peak load.
ElasticStrainValue
The ElasticStrainValue function is used to calculate the portion of strain in a specimen that is recoverable,
or elastic. The point where this is determined is based on some percentage of the peak load.
Returns
The portion of the strain that is recoverable.
Syntax
ElasticStrainValue(ForceArray, StrainArray, StartIndex, EndIndex, Tolerance)
Parameter
ForceArray – The array containing force data.
StrainArray – The array containing strain data.
StartIndex – The start index of the modulus region.
EndIndex - The end index of the modulus region.
Tolerance – The percentage drop from peak force used to determine the transition point.
Unit Class
Strain
Example
Tolerance = 98% (shown at blue oval)
The point is found where the load value is 98% of the peak load. Then a line parallel to the modulus line
is drawn from this point back to the x-axis. The Elastic strain is the difference in strain values as shown
on the graph.
250 | MTS TestSuite
Working with Variables