R.P. Wei, D.G. Harlow, D. Muench

Aging aircraft research over the past decade has led to the recognition of the need for further improvements in the methods for design, and for the incorporation of on-board prognosis systems to aid in the management of individual and fleets of aircraft. Structural integrity prognosis systems are being developed to monitor and estimate the onset and progression of damage. The fidelity and reliability of such estimates would be greatly enhanced by the incorporation of appropriate, science based probability models for predicting damage evolution. In this paper, the framework and process for the development of such models are described. They are illustrated through prior and current research on localized corrosion and corrosion fatigue of aluminum alloys, using observations from the lower wing panels of Boeing 707-321B and AT-38B aircraft. Incorporation of these models into the design of new aircraft and the life extension programs for the current fleet is suggested. The feasibility of implementing the model into a materials prognosis system is demonstrated, and the fusing of the model with sensor input within such a system is discussed.

23rd ICAF Symposium of the international Committee on Aeronautical Fatique, 2005, Hamburg

Conference Paper

englisch

A5, 18 Seiten

DGLR-Bericht, 2005, 2005-03, 23rd ICAF Symposium of the international Committee on Aeronautical Fatique - Proceedings; S.323-340; 2005; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

Bestellbar

2005