Fundamental Problems of Fretting Wear

抄録

Recent studies of fretting wear are reviewed on the basis of work carried out by the author's laboratory. Some of the new findings are introduced below. (1) The critical amplitude to produce severe wear is equivalent to the amplitude when the non-slip region disappears in the elastic contact. (2) An induction period, the number of fretting cycles to produce damage, is identified. (3) Fretting wear of steel takes place at the point of the maximum strain-energy on the surface and the fatigue crack of glass occurs at the point of the repeated maximum principal stress on the surface arising from the fretting motion. Some methods to prevent fretting damage are also introduced regarding their theoretical and experimental aspects.