Explain the different stages of the stress-strain curve of PE. LLDPE - 50mm 14 12 10 8 Stress (MPa) 6 2 0 -10 10 30 50 70 90 110 130 150 Strain (%) Explain the different stages of the stress-strain curve of PE. LLDPE - 50mm 14 12 10 8 Stress (MPa) 6 2 0 -10 10 30 50 70 90 110 130 150 Strain (%)