vould you expect regarding the yield strength in the longitudinal direction (parallel to the rolling direction) vs. transverse direction (perpendicular to the rolling direction)? higher yield strength for transverse direction higher yield strength for longitudinal direction no reason to expect any significant different with with orientation Which of the following microstructural changes occur exclusively during plastic deformation of semicrystalline polymers? (a) increased interatomic separation distance in crystalline regions (b) in amorphous regions, chain extension in the tensile direction (c) re-orientation of crystalline regions both b and c