Machine Design - Fatigue Failure
GATE Mechanical Engineering · 4 questions across 3 years (2018-2025) · 8% recurrence rate
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2018–2025Difficulty mix
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All 4 questions on Machine Design - Fatigue Failure
The endurance limit of a specific grade of steel is same as its yield strength. The ultimate strength of this grade of steel is twice of its yield strength. A component made of this steel is loaded in tension and unloade...
Which one of the following failure theories is the most conservative design approach against fatigue failure?
A machine component made of a ductile material is subjected to a variable loading with σ_min = -50 MPa and σ_max = 50 MPa. If the corrected endurance limit and the yield strength for the material are σ'_e = 100 MPa and σ...
A bar is subjected to a combination of a steady load of 60 kN and a load fluctuating between -10 kN and 90 kN. The corrected endurance limit of the bar is 150 MPa, the yield strength of the material is 480 MPa and the ul...