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a.What is the difference between endurance limit materials and others? b.What is an S-N curve? And explain...

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Mechanical Engineering

a.What is the difference between endurance limit materials andothers?

b.What is an S-N curve? And explain this based on the wing of anaircraft in flight.

c.Why do fatigue cracks only grow during tension and notcompression?

d.Tensile stress levels affect the life expectancy of a part -why?

Answer & Explanation Solved by verified expert
4.2 Ratings (903 Votes)
a Ans Endurance limit for a material is defined as the maximum stress in completely reverse bending which can be applied to a material with infinite number of cycles and failure does not occur in the material The infinite number of cycles are usually taken as 10000000 for calculation purpose It is important to note that this value of stress is well below the yield strength of the same material in simple    See Answer
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