Define the term: Stress, Bulk modulus and Viscosity.
[3 marks]Give the concept of Auxetic materials with suitable examples and figures.
[4 marks]Write a short note on Modulus of Rigidity.
[7 marks]Anylon string has a diameter of 1.2mm, pulled by a force of 90N. Determine the tensile stress.
[3 marks]List out the factors affecting Glass transition temperature.
[4 marks]Arectangular block has been molded using SBR rubber with 30% styrene content. The area of the upper face of the block is 6m × 6m and the lower face is fixed. The height of the block is 15cm. Acompressive force of 1.875 × 106 Napplied to the top face produces a volume contraction of 15%. Calculate: (i) Contraction of volume (in m3) (ii) Tg of the raw polymer (iii) Volumetric Stress (iv) Bulk modulus. And explain the consequence of replacing the raw polymer by SBR rubber with 10% styrene content.
[7 marks]Discuss in detail about “Molecular weight affect the glass transition temperature”
[7 marks]Define the terms: (i) Retardation (ii) Rheopectic fluid (iii) Newtonian fluid
[3 marks]Write a brief note on visco plastic fluids.
[4 marks]Derive the relationship between viscosity and energy dissipation.
[7 marks]Write the importance of viscoelastic fluid.
[3 marks]Give the difference between Newtonian and Non Newtonian fluid.
[4 marks]Explain the different kinds of behavior of Dilatant and Bingham plastic fluids in detail.
[7 marks]Write a brief note on Hook’s model.
[3 marks]Derive the stress relaxation experiment equation for Maxwell model.
[4 marks]Discuss the Four parameter model in detail.
[7 marks]Explain a brief note on Retardation spectra.
[3 marks]Give the broad classification of polymeric material based on mechanical behavior.
[4 marks]Short note on Voight model.
[7 marks]Define the terms : (i) Specific viscosity(ii) Dynamitic viscosity (iii) kinematic viscosity
[3 marks]List out the factors affecting viscosity.
[4 marks]Short note on “Capillary Viscometer”.
[7 marks]“Temperature affect the viscosity of Liquid” justify the statement.
[3 marks]Write a brief note on Viscosity and its nomenclature.
[4 marks]Describe the transitions and associated properties with respect to glass transition temperature.
[7 marks]