STUPIDSID
1(a)
Give the broad classification of metal working processes.
4 M
1(b)
Explain Tresca and Von-Mises yield criteria.
8 M
1(c)
The state of stress at a point is given by σx=70MPa,
σy=120
τxy=35MPa. If the yield strength of the material is 125 Mpa, determine in a uniaxial tensile test, whether yielding will occur according to Tresca's and Von-Mises yield conditions or not.
σy=120
τxy=35MPa. If the yield strength of the material is 125 Mpa, determine in a uniaxial tensile test, whether yielding will occur according to Tresca's and Von-Mises yield conditions or not.
8 M
2(a)
List and explain various process parameters affecting on the metal working processes.
10 M
2(b)
Define and explain the concept of workability.
6 M
2(c)
Write a note on deformation zone geometry.
4 M
3(a)
With simple sketches,explain different types of forgiing operations.
8 M
3(b)
Explain various die-design parameters.
6 M
3(c)
A block of lead 25mm×25mm×150mm× is pressed between flat dies to a size of 6.25mm×100mm×150mm. If the uniaxial flow stress is σ0=6.9MPa andμ=0.25. Determine the pressure distribution over the 100mm dimension.
6 M
4(a)
List and explain different types of rolling mills.
10 M
4(b)
Briefly explain different types of rolling variables.
5 M
4(c)
What are the problems and defects occurred in rolled products?
5 M
5(a)
With simple sketches,explain the drawing die.
5 M
5(b)
List and explain different methods of tube drawing.
10 M
5(c)
What is the percentage contribution of friction to the drawing stress at 40% reduction of area using two lubricants having co-efficient of friction value, μ=0.05 and μ=0.1 with α=15° die and a fixed parellel plug.
5 M
6(a)
Sketch and explain basic types of extrusion.
10 M
6(b)
Explain the different methods used in the production of seamless pipes and tubes.
10 M
7(a)
Sketch and explain a progressive die used for the production of washer.
8 M
7(b)
Explain how a cylindriacal cup is formed.
6 M
7(c)
Explain the concept of forming limit criteria.
6 M
8(a)
Sketch and explain explosive forming.
6 M
8(b)
Explain the different methods used for the production of metal powders in powder metallurgy.
8 M
8(c)
List the advantages, limitations and applications of powder metallurgy.
6 M
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