Engineering Materials and Metallurgy: Unit V: Mechanical Properties And Testing

Essay Answer Type Questions

Mechanical Properties and Testing | Engineering Materials and Metallurgy

Essay Answer Type Questions: Mechanical Properties And Testing - Engineering Materials and Metallurgy

Essay Answer Type Questions

On Mechanical Properties of Materials

1. List and explain the most important mechanical and technological properties. Also discuss their significance with suitable exercises.

2. What is the effect of the following on the mechanical properties of the materials:

(a) Grain size,

(b) Heat treatment,

(c) Atmospheric exposure, and

(d) Temperature.

On Deformation of Metals

3. Explain the two modes of plastic deformation in metals with neat sketches.

(a) Critically compare the deformation by slip and twinning.

(b) Derive an expression for critical resolved shear stress in a material subjected to uniaxial tensile loading. Also distinguish between shear stress and critical resolved shear stress.

On Fracture and Its Prevention

4. What is brittle fracture? Explain the Griffith's theory on brittle fracture and deduce an expression for the critical stress required to propagate a crack simultaneously in a brittle material.

Engineering Materials and Metallurgy: Unit V: Mechanical Properties And Testing : Tag: : Mechanical Properties and Testing | Engineering Materials and Metallurgy - Essay Answer Type Questions