Explain roughness width and roughness width cut off, Mechanical Engineering

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Explain Roughness width and Roughness width cut off?

Roughness width: - Roughness width is the distance parallel to the normal surface between successive peaks or ridges which constitute the predominate pattern of the roughness. It is stated in millimeters.

Roughness width cut off: - It is the greatest spacing of repetitive surface irregularities so to be included in the measurement of average roughness height. It should always be greater than the roughness width in order to obtain the total roughness height rating. It is expressed in millimeters.


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