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Determine the tensile strength (MPa), fracture strain (mm/mm), density (g/cm 3 ), and specific strength (MPa/(g/cm 3 )) for the four tensile test specimens. Explain
Determine the tensile strength (MPa), fracture strain (mm/mm), density (g/cm3), and specific strength (MPa/(g/cm3)) for the four tensile test specimens. Explain why two different crosshead speeds were used for the metal and polyethylene samples (5 points)
| Physical Measurements: | |||||
| Ave. diameter (mm) | Density (g/cm3) | Initial gauge length (mm) | Final gauge length (mm) | Peak load (kN) | |
| 1018 steel | 5.96 | 4.91 | 49.33 | 66.24 | 10.21 |
| 1045 steel | 5.97 | 4.63 | 49.64 | 51.02 | 22.381 |
| 2024 T351 | 5.95 | 1.83 | 58.05 | 63.21 | 13.174 |
| Polyethelene | 12.88 | 0.592 | 45.92 | 195.73 | 3.244 |
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