15. The stress-strain curve for an elastic-plastic material is shown. After loading and unloading, a test specimen of the material had a permanent set of 0.004. What was the maximum stress reached in the material during testing?

15. The stress-strain curve for an elastic-plastic material is shown. After loading and unloading, a test specimen of the material had a permanent set of 0.004. What was the maximum stress reached in the material during testing?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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15. The stress-strain curve for an elastic-plastic material is shown. After loading and unloading, a
test specimen of the material had a permanent set of 0.004. What was the maximum stress
reached in the material during testing?
O,= 625 MPa-
e,=415 MPa-
0.002
0.004
0.006
0.008
0.010
A) 475 MPa
B) 485 MPa
C) 525 MPa
D) 555 MPa

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