You are here

Data from an Intermediate Strain Rate Test

Data from an intermediate strain rate experiment on a PR-520 epoxy resin specimen are shown below in Figure 1 and Figure 2.    Figure 1 presents engineering stress and strain history data.   The average strain rate for this experiment is ~95.0 s-1. True stress versus true strain curves for PR-520 covering a wide range of strain rates using three different test methods are presented in Figure 2.   Black traces in Figure 2 are from experiments on a servohydraulic load frame while gray traces are from compression split-Hopkinson bar tests.  The red trace, which lies between the servohydraulic and Hopkinson bar data, is from an experiment on the intermediate strain rate apparatus.

Figure 1. History data from an experiment on a PR-520 epoxy resin specimen conducted on the intermediate strain rate apparatus.

 

Figure 2. True stress versus true strain data for PR-520 epoxy resin over a wide range of strain rates. The red curve is from an experiment conducted with the intermediate strain rate apparatus.