Write an article of about 1000 words describing the stress-strain curve for a material. Explain in detail about young's modulus, proportional limit, yield point and fracture point along with the applications of the same.

Q. Figure shows the strain-stress curve for a given material. What are (a) Young's modulus and (b) approximate yield strength for this material ?

Q. Figure shows the strain-stress curve for a given material. What are

$A.$ Young's modulus
$B.$ approximate yield strength for this material?

Q. Figure 9.11 shows the strain-stress curve for a given material. What are (a) Young’s modulus and (b) approximate yield strength for this material?

Q. A hypothetical engineering stress-strain curve shown in the figure has three straight lines PQ, QR, RS with coordinates P(0,0), Q (0.2, 100), R (0.6, 140) and S (0.8, 130). Q is the yield point, R is the UTS point and S the fracture point.


The toughness of the material (in MJ/ $m^3$) is