You are given three metal test samples, with the same chemical composition and differing grain sizes: A: 5.0, B: 10.0 and C: 20.0 microns. Samples A and B have been tested and have yield stresses of 142.4 MPa and 135.8 MPa (all numbers are rounded off to the 1st decimal point). Based on this information, which of the following values do you think will be the closest to the yield stress of Sample C? In calculating the answer, use the Hall-Petch relation between yield stress of a metal ovield and the grain size of the metal d, which is Oyield = 00 + kd¯1/2 where k and og are constants. (This question has only one correct answer) O a. 128.1 MPa О Б. 115.8 MPа О с. 100.6 MPa O d. 131.1 MPa 152.4 MPa

You are given three metal test samples, with the same chemical composition and differing grain sizes: A: 5.0, B: 10.0 and C: 20.0 microns. Samples A and B have been tested and have yield stresses of 142.4 MPa and 135.8 MPa (all numbers are rounded off to the 1st decimal point). Based on this information, which of the following values do you think will be the closest to the yield stress of Sample C? In calculating the answer, use the Hall-Petch relation between yield stress of a metal ovield and the grain size of the metal d, which is Oyield = 00 + kd¯1/2 where k and og are constants. (This question has only one correct answer) O a. 128.1 MPa О Б. 115.8 MPа О с. 100.6 MPa O d. 131.1 MPa 152.4 MPa

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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