What is a composite material?
[3 marks]Give classification of composites in detail.
[4 marks]Derive longitudinal strength and stiffness for unidirectional lamina.
[7 marks]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]Derive inplane shear modulus for unidirectional lamina.
Define Lamina and laminate.
[3 marks]What is FRP? Write characteristics and advantages of FRPs.
[4 marks]Describe the stress-strain relations for plane stress in an orthotropic material.
[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]Define Isotropic and Anisotropic body.
[3 marks]What is Prepeg? Explain.
[4 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.
[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]The E-glass fibers in polyester is 35% by weight. Given Density of fiber is 2.50gm/ml and density of matrix is 1 gm/ml Calculate fiber volume fraction and density of composite for the lamina.
[7 marks]What are the characteristics of super alloys?
[3 marks]Explain stress-strain relation of an Isotropic Material.
[4 marks]Write note on Poisson’s ratio and its Mismatch effect.
[7 marks]Compare Polyester resins with Epoxy resins.
[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]