Tackle the crash barrier case study using CES Level 2 following the requirements set out in Table XXXXXXXXXXUse a Limit stage to apply the constraints on fracture toughness K 1c  18 MPa m 1/2 and the...

Tackle the crash barrier case study using CES Level 2 following the requirements set out in Table 10.12. Use a Limit stage to apply the constraints on fracture toughness K_1c
 18 MPa m^1/2
and the requirement of recyclability. Then make a chart with yield strength α_y
on the y-axis and density ρ on the x-axis and apply a selection line with the appropriate slope to represent the index for the mobile barrier:

List the best candidates. Then replace Level 2 with Level 3 data, limiting the search to metals, and explore what you find.