For the tensile stressstrain curves shown all the same scale

For the tensile stress-strain curves shown (all the same scale), answer the following questions: a) Characterize the material for each tensile test as brittle or ductile b) Which material is stiffest? c) Which is the most ductile? d) Which has the greatest yield strength? e) Which has the greatest ultimate strength f) Which has the greatest fracture strength? g) Which has the greatest modulus of resilience h) Which has the greatest modulus of toughness?

Solution

a) a & b are brittle , c is ductile

b)    b

c)   c

d) b

e) b

f) c

g) a ( area under the curve upto yield point is more for a)

h) c( area under the curve more for c)