MTS Multipurpose Elite - Manual (Page 267)

2. Checks to see if the value of the Strain channel has exceeded the value of the RemovalPoint input.
3. Reports the value of the Extension channel when the Strain channel has exceeded the value of
RemovalPoint.
CombinedStrain
The CombinedStrain function returns the strain value calculated from either the extensometer or the
crosshead/actuator based on the value of the removal point.
Returns
The function returns the extensometer value divided by extGL prior to the removal points or crosshead
divided by gripSeparation.
Syntax
CombinedStrain(extensometer, crosshead, removalPoint, gripSeparation, extGL)
Unit Class
Strain
Example
CombinedStrain( Strain, Extension, RemovalPoint, GageLength2, GageLength1)
This formula:
1. Reports the value of the Strain1 channel divided by the value of GageLength1.
2. Checks to see if the value of the Strain1 channel has exceeded the value of the RemovalPoint input.
3. Reports the value of the Extension channel divided by value of GageLength2 when the Strain1 channel
has exceeded the value of RemovalPoint.
MedianPeak
The MedianPeak function determines the median of the peaks located in the specified region that meet
the specified peak criterion.
Returns
The median peak value.
Syntax
MedianPeak(VarArray, peakCriterion[, startIndex, endIndex, threshold])
Parameters
VarArray - The array data being analyzed for peaks.
peakCriterion - The percentage change from the peak that signifies a peak.
startIndex - The optional start index of the region. The search starts at the first data point if this parameter
is missing.
MTS TestSuite | 267
Working with Variables