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Strain-rate, temperature, pressure, and aging time all affect the stress/strain behavior of polymers. Draw a stress-strain curve below for a typical ductile polymer. Clearly label the yield point and the ultimate tensile strength. Using this curve draw two new curves corresponding to same polymer but now tested at: 1) an increase in temperature and 2) an increase in strain rate. Explain what happens to the tensile behavior after: a) a prolong time of aging time is increased and b) when the tensile tests are conducted under super imposed hydrostatic compression