What is a composite material?
[3 marks]Explain particulate and fiber reinforced composite materials.
[4 marks]Derive longitudinal strength and stiffness for unidirectional lamina.
[7 marks]What is prepegs?
[3 marks]Differentiate between lamina and laminate.
[4 marks]Derive transverse modulus for unidirectional lamina.
[7 marks]Derive inplane shear modulus for unidirectional lamina.
What is the need of Fillers? Explain in details.
[3 marks]Write a note on Equilibrium equations.
[4 marks]Explain different types of fibers.
[7 marks]How many number of independent elastic constants for monoclinic material?
[3 marks]What is transformation of stress and strain?
[4 marks]Explain different types of thermoset polymers.
[7 marks]How many number of independent elastic constants for general anisotropic material?
[3 marks]Aglass /epoxy specimen weighing 0.98 gm was burnt and the weight of the remaining fibers was found to be 0.49 gm. Densities of glass and epoxy are 2.4 gm/ml and 1.2 gm/ml respectively. Determine the density of composites in the absence of voids.
[4 marks]What is the application of Composite materials in the field of Aviation?
[7 marks]Write a note on Poisson’s ratio with reference of composite material.
[3 marks]Explain the stress strain relationship of a specially orthotropic material and Transversely Isotropic material.
[4 marks]Discuss in details anti symmetric laminates.
[7 marks]Explain stress-strain relation of an Isotropic Material.
[3 marks]The E-glass fibers in a polyster resin is 35% by weight. Given ρ = 2.50 f gm/ml and ρ = 1 gm/ml. Calculate Vand ρ for the lamina. m f c
[4 marks]Describe the behavior of Young’s modulus Ex, Ey and Shear modulus Es with orientation angle.
[7 marks]Explain stress-strain relation of an Orthographic Material.
[3 marks]What are the basic assumption for analysis of laminated composites?
[4 marks]Derive Strain-Displacement relationship of a laminate along with a neat sketch stating all the necessary assumptions.
[7 marks]