(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.
The flow stress (in MPa) of a material is given by o = 500 0.1, Where & is true strain. The Young's modulus of elasticity of the mater 41 is 200GPa. A block or thickness 100 mm made of this material is compressed to 95 mm thickness and then the load is removed. The final dimension of the block (in mm) is
Answer is 318.3 Gpa
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
Answer the problem with detailed step by step solution refer to the table of equations when answering the problem.
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
A machine component under fluctuating tensile stresses is considered to be safe if the average stress and stress amplitude satisfy the following inequality. Oavg amp s1 360 210 The machine member is subjected to stress 120 + Psin (20 t + 0.8) MPa. For safe working of member, max. what is the minimum value of P?

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