Machine Design
A double fillet welded joint with parallel fillet weld of length 'l' and leg 's' is subjected to a tensile force 'P'. Assuming uniform stress distribution, the shear stress in the weld is given by

2P/s.l
P/2.s.l
P/√2.s.l
√2P/s.l

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Machine Design
Cold working

Has no influence on fatigue strength
Increases the fatigue strength
Decreases the fatigue strength
Alone has no influence on fatigue strength

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