MODULE II

1.Give the basic assumptions to derive the expressions for stresses and moments in laminates.

2.What is a balanced laminate? Give an example.

3. Define symmetric laminate. Give an example.

4.What is angle-ply laminate? Give the code for the laminate.

5.Define cross-ply laminate. Give an example.

6.What is quasi-isotropic laminate? Give an example.

7.What does [A] matrix represent?

8. What does [A] matrix represent?

9.What does [A] matrix represent?

10. What does [B] matrix represent?

11.What does [D] matrix represent?

12.What is the significance of [B]=0

Compare the properties of various fibers used in PMC

 

 Define Rule of Mixtures in the determination of elasticity modulus.2. Name the precursors used in the

manufacturing of carbon fibers.3. Calculate f V andc ρ 

for a composite laminate containing 30% weight of E-glass fibers in a polyester resin. Assume 54.2 ρ g/ml andg/ml1.1=m ρ .4. Discuss the effects of interface bonding on properties of composite.5. What are three common modes of failure of a unidirectional compositesubjected to Longitudinal tensile load?6. Define strength ratio.7. Write down the equilibrium equations for bending of laminated plates.8. Mention the stiffness parameter on which the buckling load depends? W