Consider a member made of 2024-T4 aluminum (yield strength 325 MPa, ultimate st

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Consider a member made of 2024-T4 aluminum (yield strength 325 MPa, ultimate strength 470 MPa) if the fully-reversed S-N diagram is represented as . 839 [ ] 0.102 N MPa a f− σ = At a location of interest the material is repeatedly subjected to the uniaxial stress history shown in the figure below. Estimate the number of repetitions of this loading history necessary to cause fatigue failure using the Palmgren-Miner rule.• Think carefully how the cycles in the “repetition” should be counted. Tabulate the mean stress, stress amplitude, number of cycles for each cycle type, and number of cycles to failure Nf for each type of cycle contained in the operational cycle.• Analyze your results and comment. Which portions of the loading history

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