1. During a tensile test in which the starting gage length =125.0 mm and the cross-sectional area = 62.5 mm2 , the following force and gage length data are collected (1) 17,793 N at 125.23 mm, (2) 23,042 N at 131.25 mm, (3) 27,579 N at 140.05 mm, (4) 28, 913 N at 147.01 mm, (5) 27,578 N at 153.00 mm, and (6) 20,462 Nat 160.10 mm. The maximum load is 28,913 N and the final data point occurred immediately prior to failure. (a) Plot the engineering stress strain curve. Determine (b) yield strength, (c) modulus of elasticity, and (d) tensile strength.

1. During a tensile test in which the starting gage length =125.0 mm and the cross-sectional area = 62.5 mm2 , the following force and gage length data are collected (1) 17,793 N at 125.23 mm, (2) 23,042 N at 131.25 mm, (3) 27,579 N at 140.05 mm, (4) 28, 913 N at 147.01 mm, (5) 27,578 N at 153.00 mm, and (6) 20,462 Nat 160.10 mm. The maximum load is 28,913 N and the final data point occurred immediately prior to failure. (a) Plot the engineering stress strain curve. Determine (b) yield strength, (c) modulus of elasticity, and (d) tensile strength.

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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(SI Units) In a tensile test, the starting gage length = 100.0 mm and the cross-sectional area = 150 mm2. During testing, the following force and gage length data are collected: (1) 17,790 N at 100.2 mm, (2) 23,040 N at 103.5 mm, (3) 27,370 N at 110.5 mm, (4) 28,910 N at 122.0 mm, (5) 27,480 N at 130.0 mm, and (6) 20,460 N at 135.1 mm. The final data point (6) occurred immediately prior to failure. Yielding occurred at a load of 19,390 N (0.2% offset value), and the maximum load (4) was 28,960 N. (a) Plot the engineering stress strain curve. Determine (b) yield strength, (c) modulus of elasticity, (d) tensile strength, and (e) percent elongation.
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1 Question 2(a): 2 A steel surveyor's tape is to be used to measure the length of a line. The tape has a rectangular section of 2 cm by 0.5 cm and a length of 100 cm when 7, and the tension or pull 3 4 on the tape is AA N. Determine the true length of the line if the tape shows the reading to be 5 BB cm when used with a pull of CC N at Te ground on which it is placed is flat. 6 7 Take: 8 °C T₁ = 55 P P 9 T₂ 85 °C = 10 AA = 20 N 2 cm 11 BB = 463.2 cm 12 CC= 35 N 0.5 cm 13 12010)/°C 14 = 200 G Pa 15 16 17 Solution: 18 cm 19 20 cm 21 22 L= 463.2 + cm Ans 23 24 Question 2(b): 25 Three bars each made of different materials are connected together and placed between two 26 walls when the temperature is T. Determine the force exerted on the rigid supports when 27 the temperature becomes T . The material properties and cross-sectional area of each 28 bar are given in the figure. Steel Brass 29 E 200 GPa 30 Take: Ebr 12(10-)/°C abr 100 GPa 21(106)/C Copper Eu = 120 GPa cu = 17(10)/C Acu - 515…
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