5.6 Using the Slope (Modulus) Tool The Slope or Modulus Tool is used to find the slope along the curve in your graph or to determine results such as the elastic modulus of a material. L3 Series software has four (4) algorithms that you may use to find the slope or modulus along your data curve: Automatic Fit, Maximum, Tangent and Two-point also known as Chord or Segment slope.
5.6.1 Maximum Slope Algorithm The Maximum Slope algorithm uses all of the data within a segment that you specify using scope up to the greatest stress or load value measured within that segment. The Maximum Slope algorithm uses all of the data points within your segment and looks for the greatest stress or load value first. It then calculates the slope from this greatest value. Because it is possible to have multiple peaks within your graph, the Maximum Slope algorithm will evaluate the data and find the greatest value within the entire data stream.
Max Slope & Slope Fit
Tangent Slope
Two-Point Slope
The Maximum Slope algorithm draws the slope or modulus line on the graph in green and calculates the elastic modulus for stress-strain.
Slope Measurement Tools
Elastic result is 17019.55 Mpa
Uses all the data points along the graph trace to find the data segment with the greatest slope.
The green line is the slope line.
The blue line is the data segment determined to have the greatest slope.
Using Automatic Slope (Fit) Indicates the elastic result along a blue slope line
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