Question

Compare the Young's modulus E∗ of two open-cell foams. Which Young's modulus is higher? Recall that C1=1.

1. polystyrene: (Es∼3.5GPa), ρ∗/ρs=0.3

2. Al 7075-T651: (Es∼72GPa), ρ∗/ρs=0.1

E∗PS (in GPa):

E∗Al (in GPa):

Select the correct answer:
Polystyrene has a higher Young's modulus
Al 7075-T651 has a higher Young's modulus

Answer 1

Al 7075-T651 has a higher Young's modulus