Interpretation of Gear Wear

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Abstract
The paper discusses the concept of using morphological examination of wear debris to assess the condition of gears in a gear box. The debris examined was produced by three sets of gears that were tested in two special-purpose gear rigs. The experimental techniques employed were transmission and scanning electron microscopy, optical microscopy, and ferrography. It is suggested that an understanding of gear tooth wear may be soundly based on the role of plastic deformation in the wear process. It is concluded that the links between wear and tooth fracture have yet to be established.