Measurement of wear, scar, scratch, depth, defect, step height

This test method is used to evaluate the level of friction and/or wear between two materials under lubricated or non-lubricated conditions. Under controlled conditions, a rotating annular specimen is brought into contact with a non-rotating flat specimen. Specimens can be prepared from die materials, sheet or plate materials, metals or plastics. The applied normal force and the torque are measured, and the coefficient of friction is calculated

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