Q19 and Q20 Q19-Derive an expression for true strain as a function of D and Do for a tensile testspecimen of round cross-section.Q20-The following data are collected during a tensile test in which the starting gagelength = 125.0 mm and the cross- sectional area = 62.5 mm2:23,042131.25Load (N)27,578153.0017,79327,579140.0528,91320,4620 125.23Length (mm)The maximum load is 28,913 N and the final data point occurred immediately prior tofailure.(a)Plot the engineering stress strain curve. Determine: (b) yield strength Y,(c) modulus of elasticity E,(d) tensile strength UTS (e). determine the strength coefficient and the strainhardening exponent. Be sure not to use data after the point at which necking147.01160.10occurred...Ans b-Y = 310.27 MPa , c- e=168,625 MPa. d.UTS=426.6 MPa e- n = 0.283,K = 910.2 MPa0.283The flow curve equation is: o = 910.2 e

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Engineering

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Q19-Derive an expression for true strain as a function of D and Do for a tensile test specimen of round cross-section.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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