Which one of the following is an example of a symmetric laminate?
(A) [20/30/-30/-20]
(B) [0/30/30/0/30]
(C) [0/30/0]
(D) [0/45/45]
What angle plies are used to make a cross-ply laminate?
(A) 0,80
(B) 45,-45
(C) 0,45,-45,90
(D) 0,90
Which one is an example of a balanced laminate?
(A) [60/30/-60]
(B) [30/-30/-30/40]
(C) [30/-30]
(D) [30/-30/40/40]
What does a quasi-isotropic laminate act similar to?
(A) an isotropic material in extension
(B) an isotropic material in bending
(C) an isotropic material in both bending
and extension
What is the minimum number of plies required to make a quasi-isotropic laminate?
(A) 2
(B) 3
(C) 4
Which one of these is correct for a [0/90] laminate?
(A) quasi-isotropic.
(B) not quasi-isotropic.
(C) may or may not be quasi-isotropic.
What is [0/90/90/90/0] laminate an example of?
(A) unsymmetric laminate.
(B) cross-ply laminate.
(C) an angle ply laminate.