To find the value of the major Poisson’s ratio, ν12 of a unidirectional lamina, one would apply the following stress to the unidirectional lamina.
(A) Normal stress perpendicular to the fiber
direction
(B) Normal stress parallel to the fiber
direction
(C) Shear stress to the lamina in the 1-2
plane
An assumption that must be made when using Hooke’s law for a two-dimensional unidirectional lamina in plane-stress is:
(A) Only axial loads are applied
(B) There are no out-of-plane loads.
(C) Only shear loads are applied.
To find the value of the longitudinal modulus E1 of aunidirectional lamina, one would apply the following stress to the lamina.
(A) Normal stress perpendicular to the
fibers
(B) Normal stress parallel to the fibers
(C) Shear stress to the lamina in the 1-2
plane