Machine Design
The ends of the leaves of a semi-elliptical leaf spring are made triangular in order to

Have variable bending moment (M) in each leaf
Obtain variable moment of inertia (I) in each leaf
Permit each leaf to act as an overhanging beam
Make M/I constant throughout the length of the leaf

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Machine Design
Which is correct statement? Stress concentration in cyclic loading is

Very serious in brittle materials and less serious in ductile materials
Seriousness would depend on other factors
Equally serious in both types of materials
Very serious in ductile materials and less serious in brittle materials

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