Machine Design
Residual stress in materials

Acts when external load is applied
Is always harmful
Becomes zero when external load is removed
Is independent of external loads

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Machine Design
In cross or regular lay ropes

Wires in two adjacent strands are twisted in opposite direction
Direction of twist of wires and strands are same
Direction of twist of wires in strands is opposite to the direction of twist of strands
Wires are not twisted

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