Tackle the crash barrier case study using CES Level 2 following the requirements set out in Table…

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 K1c  18
MPa m1/2 and the requirement of recyclability. Then make a chart
with yield strength _y on the y-axis and density _ 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.