Wear seems to be very simple, why is it considered a complex issue?


  • The Definition of wear =
    Unwanted removal of material from --
    or displacement of material on -- a surface.

  • The problem is -- it usually occurs with other
    mechanical/chemical phenomena, such as fatigue
    and/or corrosion, and/or oxidation.

  • Its complexity becomes obvious when we
    try to classify and describe the types of wear, as can be
    seen from the following chart.

Chart of Basic Categories of Wear and Wear Modes