Question

If a two-inch specimen of the material shown were to be loaded until it reached an overall length of 2.005 inches and then unloaded, what would the expected length of the specimen be upon unloading?

o(ksi) 80 70 60 50 40 30 20 10 0 e (in./in.) 0 0.04 0.08 0.12 0.16 0.20 0.24 0.28 0 0.0005 0.0010.0015 0.002 0.0025 0.0030.0035

Answer 1

From the diagram we can see that the strain at the final point is 0.0030 in/in in both cases.

Hence, final length= (1+strain)*initial length = (1+0.0033)*2 = 2.0066 in

After this point, breakage of specimen takes place.