QUESTIONS:
1) Draw stress-strain curve for a ductile material. In what respect, can we expect an identical curve for a brittle material to be different from that of a ductile material?
2) Explain weldability and machinability of metals?
3) What do we understand by the subsequent terms?
(i) Limit of proportionality (ii) Yeild-point (iii) Ultimate tensile strength
4) Differentitate between Brittle fracture and Ductile fracture. How they're caused.
5) Explain the meaning of the subsequent terms:
(i) Stiffness, (ii) Hardness, and (iii) Toughness
6) What are the variuos non-destructive tests? Explain briefly their fields of application.
7) Differentiate between failure of material due to fatigue and Creep?
8) What is the effect of stress and temperature on a creep curve?
9) What do we understand by percentage elongation? What does a high percentage elongation value signify?
10) Name three common "Hardness tests". Describe anyone of them?
11) Do all metals have endurance limits? Explain.
12) Explain the role of fatigue failure behaviour of metals?
13) Why are brittle materials used more often in compression than in tension in structural design?
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