Exfoliation Corrosion and Pitting Corrosion and Their Role in Fatigue Predictive Modeling State of the Art Review. Department of Mechanical Engineering, University of Utah, 5. South Central Campus Drive, Room 2. Salt Lake City, UT 8. USACopyright 2. David W. Hoeppner and Carlos A. Arriscorreta. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Intergranular attack IG and exfoliation corrosion EC have a detrimental impact on the structural integrity of aircraft structures of all types. Understanding the mechanisms and methods for dealing with these processes and with corrosion in general has been and is critical to the safety of critical components of aircraft. Discussion of cases where IG attack and exfoliation caused issues in structural integrity in aircraft in operational fleets is presented herein along with a much more detailed presentation of the issues involved in dealing with corrosion of aircraft. Issues of corrosion and fatigue related to the structural integrity of aging aircraft are introduced herein. Mechanisms of pitting nucleation are discussed which include adsorption induced, ion migration penetration, and chemicomechanical film breakdown theories. In addition, pitting corrosion PC fatigue models are presented as well as a critical assessment of their application to aircraft structures and materials. Impact damage is an important type of failure in aircraft structures. Among different types of damages in an aircraft such as fatigue, corrosion and accidental. Intergranular attack IG and exfoliation corrosion EC have a detrimental impact on the structural integrity of aircraft structures of all types. Understanding the.
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November 2017
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