Design Against Fluctuating Load Practice Set

May 19, 2021

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1. A stress that varies in sinusoidal manner with respect to time from tensile to compressive (or vice versa) and which zero mean is called

2. Stress concentration factor is defined as

3. Fatigue failure results due to fluctuating stresses when the stress magnitude is

4. In cyclic loading, the effect of stress concentration is more serious in case of

5. The relationship between endurance limit of component subjected to fluctuating torsional shear stresses (Sse) to endurance limit in revered bending (Se) is

6. The notch sensitivity factor (q) is given by

    Where, Kt and Kf are theoretical and fatigue stress concentration factors

7. The maximum stress concentration factor for a rectangular plate with a transverse hole loaded in tension or compression is

8. Stress concentration occurs due to

9. The factor of safety for machine parts subjected to reversed stresses is

10. The approximate relationship between endurance limit of rotating beam specimen (S’e) and ultimate tensile strength (Sut), in case of steel component, is


 

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A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

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