Determine the modulus of resilience for each of the following alloys:
| Yield Strength |
|
Material | MPa | Psi |
Steel alloy | 830 | 120,000 |
Brass alloy | 380 | 55,000 |
Aluminum alloy | 275 | 40,000 |
Titanium alloy | 690 | 100,000 |
Use the modulus of elasticity values in Table 6.1.
Table 6.1 Room-Temperature Elastic and Shear Moduli and Poisson’s Ratio for Various Metal Alloys
| Modulus of Elasticity |
|
| Shear Modulus |
|
Metal Alloy | GPa | 106 psi | GPa | 106 psi | Poisson’s Ratio |
Aluminum | 69 | 10 | 25 | 3.6 | 0.33 |
Brass | 97 | 14 | 37 | 5.4 | 0.34 |
Copper | 110 | 16 | 46 | 6.7 | 0.34 |
Magnesium | 45 | 6.5 | 17 | 2.5 | 0.29 |
Nickel | 207 | 30 | 76 | 11.0 | 0.31 |
Steel | 207 | 30 | 83 | 12.0 | 0.30 |
Titanium | 107 | 15.5 | 45 | 6.5 | 0.34 |
Tungsten | 407 | 59 | 160 | 23.2 | 0.28 |
5See, for example, W. F. Riley, L. D. Sturges, and D. H. Morris, Mechanics of Materials, 6th edition, Wiley, Hoboken, NJ, 2006.
6The SI unit for the modulus of elasticity is gigapascal (GPa), where 1 GPa = 109 N/m2 = 103 MPa.
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