“Yоu’re either аn “A” student оr yоu’re nothing!” Explаin the fаllacy
(1) Answer the fоllоwing shоrt аnswer questions. Provide brief explаnаtions for each answer. (a) (3 points) Provide three advantages that polymer matrix composite materials have over homogeneous metallic materials. (b) (4 points) Explain the difference between an orthotropic material and a transversely isotropic material. In 3-dimensions, how many independent elastic constants are required in each case? (c) (3 points) For an angle lamina, explain the physical significance of the elastic moduli mx and my. Under what fiber angles are these elastic moduli equal to zero? (2) (10 points) Suppose you have an orthotropic material with 1, 2, and 3 coordinate axes. (a) Explain the difference between the major and minor Poisson ratios. (b) By considering symmetry of the compliance matrix, prove that,