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

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

4. The surface finish factor for a highly polished component is

5. Stress concentration occurs at the contact between

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

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

7. Stress concentration occurs due to

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

9. The endurance limit of the component can be increased by

10. The reliability factor for using 50% reliability in design 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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