An alloy specimen with diameter of 12.827 mm, cross sectional area of 1.29 x 10^

Question

An alloy specimen with diameter of 12.827 mm, cross sectional area of 1.29 x 10^-4 m2 and gauge length of 50.8 mm is tested in tension and the following data were recorded beyond the yield strength:

LOAD-----------LENGTH-----------STRESS-----------STRAIN-----------TRUE STRESS-----------TRUE STRAIN
[N]--------------[mm]--------------[MPa]------------------------------------[MPa]
28,024---------51.308
31,138---------52.324

a) Complete the table
b) Find K (MPa) and n for this specimen
c) What is the true strain at the necking point?

Explanation / Answer

hooks will helpfull..... strees is directly proportional to stain

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