Question

1. An aluminum alloy is to be strengthened by the incorporation of beryllium oxide (BeO) particles. Calculate the (a) upper and (b) the lower bound elastic moduli of a composite consisting of 40% alloy and 60% wt% BeO. Young’s modulus of the alloy is 70.3 GPa and its density is 2698 kg/m³. Young’s modulus of BeO is 301.3 GPa and its density is 3010 kg/m³.

Answer 1