Determination of strainrate sensitivity parameter m

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=442doLwgyps

In this video I show you a simple exercise to obtain the strain-rate sensitivity parameter (m). Here, we use 4 different flow curves obtained at different strain rates and we use Rp0.2 as the reference stress values of each curves. You can obtain m both by graphical and mathematical methods, I show both of them. • Steps: • 1; Evaluate the Rp0.2. (The equation at 2:24 should contain 0.002 if the x-axis is strain!) • 2; Summarize the values in a table, and calculate the logarithms. • 3; Determine X and Y values. • 4; Plot the values and get the slope which will give you the strain-rate sensitivity parameter (m). • 5; Optionally, you can also calculate the value of m by using two data from the table. • Join my channel membership: / @curiousscientist • Article for the image I used: • Khan, Akhtar S., Babak Farrokh, and Laszlo Takacs. Compressive properties of Cu with different grain sizes: sub-micron to nanometer realm. Journal of materials science 43.9 (2008): 3305-3313.

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