Fretting is a contact damage mechanism arising from microslip associated with small-scale oscillatory motion of nominally clamped structural members. The need to keep aging fleets of aircraft flying has made crack nucleation and propagation in aging aircraft the focus of current research. A 2-dimensional finite element model is used to highlight the fretting crack nucleation mechanism at a typical skin/rivet interface. An approximate solution based on this analysis is used to formulate a method to quickly estimate crack nucleation life for any rivet configuration. Experiments show that fretting cracks occur at both the rivet/skin interface and in the faying surface. Predictions for the low interference case agree very well with the experimental fatigue lives. The high interference cases need accurate modeling of the rivet installation process to characterize the stress field properly for the application of a predictive method.
|Original language||English (US)|
|Number of pages||9|
|Journal||Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference|
|State||Published - Jan 1 1998|
|Event||Proceedings of the 1998 39th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference and Exhibit and AIAA/ASME/AHS Adaptive Structures Forum. Part 1 (of 4) - Long Beach, CA, USA|
Duration: Apr 20 1998 → Apr 23 1998
All Science Journal Classification (ASJC) codes