(c) Fig. Q3 shows the S-N curve of a metal rod with a diameter of 14 mm. The metal rod issubjected to a cyclic loading about a mean stress of zero. If the maximum cyclic tensileload applied is 4730 N, would the metal rod fail by fatigue and why?Stress Amplitude, σ (MPa)201050100908001001000100001000001e61e71e8Number of Cycles to Failure, N₁Fig. Q 3 S-N curve of the metal rod[8 marks]

Approach to solving the question:To predict the life of a component using a S-N curve, the stress…

Answered: (c) Fig. Q3 shows the S-N curve of a…

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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Q7. A 1.85 m long solid bar (Lo) with a 22 mm diameter is placed under tension by a load (F) of 125 kN. This solid bar is made of a homogeneous material with a Young's Modulus E = 150 GPa. Calculate the extension of the bar (AL). Give your answer in millimetres (mm) to two decimal places. F Answer: Lo L AL F
Stress amplitude (MPa) 500 450 400 350 300 250 103 104 Cycles to failure = 1E 3 |Stress = 250 MPa 105 106 Cycles to failure 107 108 10⁹
A 9 cm diameter solid aluminum post is subjected to a horizontal force of V= 8.4 kN and a concentrated torque of T= 7.8 kNm, acting in the directions shown in the figure below. Assume that L = 0.5 m. The yield strength of the aluminum is oy = 250 MPa. Determine at point K: a) Normal stress due to bending caused by V. Enter your answer in MPa to 2 decimal places. b) Shear stress caused by T. Enter your answer in MPa to 2 decimal places. c) Apply the Maximum-Distortion-Energy Theory and calculate Mises equivalent stress. Enter your answer in MPa to 2 decimal places.
A 1.6 ft long rod is made from the material, having the elastic modulus of E = 176 ksi and the yield strength of Sy = 1.04 ksi. The material has the stress-strain curve shown below. 1600 1400 1200 2 1000 800 600 400 200 0.5 1 1.5 Strain, percent By what amount must the rod be stretched from its original length for it to begin yielding? (Express your answer using whole numbers.) AL = mils Stress, psi
Q1. If the yield stress (oy) of a material is 375MPa, determine whether yield is predicted for the stresses acting on both the elements shown below using: P₁=-215 RF 330 (a) Tresca Criterion (b) Von Mises Criterion Q = 200 Element A Note: your values for P (vertical load on Element A) should be negative (i.e. corresponding to a compressive vertical load). Element B S=90
A cylindrical steel bar 8 mm in diameter is loaded 1000 cycles per day with a load of 15560 N. How long until fatigue failure takes place? Note: stress force/area 500 450 400 350 Steel Allby 300 250 200 150 Brass Alloy 100 50 1.00E-07 Cycles to Failure, N 1.00E+04 1.00E+05 1.00E-06 1.00E+08 100E+09 1.00E+10 , The bar should not fatigue. ) The bar will fail in one cycle. ) 100 days ) 1000 days Stress Amplitude, MPa
1. In the last homework, a cast iron Collar was shrink fit onto a solid steel shaft. The shaft had an outer diameter of do=2.002 inches. The cast iron Collar had an inner diameter D=2.000" and Do=3.000". The elastic properties are in table A-5 a. If the shrink fit was performed, and then the pair was operated at a temperature of 120F, what is the interference at the operating temperature? b. Given the interference obtained in part a, what is the resulting shrink fit pressure?
Using the Animated Figure: S-N Plot for Brass for a brass alloy determine the following: (a) the fatigue strength at 3 x 106 cycles. i MPa (b) the fatigue life for 104 MPa. i cycles
Given is a thin-walled tube with the following data: Wall thickness- 3mm Torque is 900 N.m Length of the thin walled tube is 1.2 m. Use G=24 GPa for aluminium A R100.00 0₁₂ C 400.00 Unit: mm Determine the following: a. Enclosed Area b. Perimeter of the thin walled tube c. Shear flow d. Shear stress e. Angle of twist E D R50.00 B
3) Referring to the plot below, a steel bar with a radius of 0.2523-inch exposes to 650°C. If the expected lifetime of the iron bar is 9 years, what is the maximum load allowed to carry? ( Stress (psi) 20,000 10,000 8,000 6,000 4,000 2,000- 1,000 30 32 34 36 38 40 42 (36+0.78 In s) Larson-Miller parameter w 1000
please help
Find the maximum normal stress in the bar pictured below. The parameter values are listed in the table. W2 P parameter value units དྷདྷ་ W1 30 mm W2 40 mm t 5 mm r 10 mm d 20 mm P 8 KN The maximum normal stress is σmax kd MPa. 080 BY NO SA 2021 Cathy Zupke P

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