1. Use the E Hmρ chart of Figure 9.14 to find the metal with a modulus E greater than 100 GPa and the lowest embodied energy per unit volume. 2. Weight saving by materials substitution. A steel beam,...

1. Use the E

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Hmρ chart of Figure 9.14 to find the metal with a modulus E greater than 100 GPa and the lowest embodied energy per unit volume.

2. Weight saving by materials substitution. A steel beam, loaded in bending, is to be replaced by an aluminum one to save weight. The bending strength of the beam must remain unchanged. What is the maximum potential weight savings that this substitution allows? Here are the material properties.