Materials Science And Engineering Properties
Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Chapter 11, Problem 8ETSQ
To determine

The probability of surviving 106 cycles with amplitude of 210MPa .

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Example: the low cycle fatigue of a certain steel is given by life cycle equation-2: (of/E)=0.005 E=0.07 b= -0.08 c= -0.7 a. What is the value of the transition fatigue life, in this case 2 N/when Ɛɛ = Ep b. What is the total strain amplitude at the transition fatigue life?
3. Given the following fatigue data for a brass alloy: Cycles to Failure 2 x 105 1х 106 Stress Amplitude (MPa) 310 223 191 3х 106 168 1 x 107 153 3х 107 143 1х 108 134 3х 108 127 1х 109 a.) Plot the S-N curve for this alloy. b.) Does this material have an endurance limit? Explain. c.) Determine the fatigue strength at 5 x 105 cycles. d.) Determine the fatigue life for 200 MPa. e.) If the loading in part c is uniaxial, what is the minimum diameter of a circular rod required for this application if the maximum load is 500 kN?
A cylindrical specimen of a metal alloy 47.5 mm long and 9.72 mm in diameter is stressed in tension. A true stress of 397 MPa causes the specimen to plastically elongate to a length of 54.3 mm. If it is known that the strain-hardening exponent for this alloy is 0.2, calculate the true stress (in MPa) necessary to plastically elongate a specimen of this same material from a length of 47.5 mm to a length of 55.8 mm. i MPa
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Materials Science And Engineering Properties
Civil Engineering
ISBN:9781111988609
Author:Charles Gilmore
Publisher:Cengage Learning