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Review of investigations on aeronautical fatigue in the Federal Republic of Germany

Period of review June 1993 to April 1995, 24. ICAF-Conference 1995 in Melbourne

: Fraunhofer-Institut für Betriebsfestigkeit -LBF-, Darmstadt; International Committee on Aeronautical Fatigue -ICAF-

	Darmstadt: Fraunhofer LBF, 1995, 56 pp. : Abb. Bericht - Fraunhofer-Institut für Betriebsfestigkeit Darmstadt, S-206 International Committee on Aeronautical Fatigue (Conference) <24, 1995, Melbourne>

	English
	Conference Proceedings
	Fraunhofer LBF ()
	Bauteil; Betriebslastensimulation; Bruchmechanik; crack propagation fracture mechanics; damage tolerance; Einzelflugversuch; environment; Faserverbundwerkstoff; fatigue life prediction; fatigue strength test; flight-by-flight test; Fügung; full-scale test; Ganzzellenversuch; joint; Lebensdauervorhersage; material; material fatigue; metal composite material; Metall; operational load simulation; random loading; residual strength; Restfestigkeit; Rißfortschritt; Schadenstoleranz; Schweißung; Schwingfestigkeitsversuch; structural component; Umwelt; weld; Werkstoff; Werkstoffermüdung; zufallsartige Beanspruchung; fatigue strength; damage tolerant structure; crack propagation; fracture mechanic; residual stress; metal; composite material; environment; welded joint

Abstract
This review was written as the German contribution to the ICAF-minutes. It contains summarized results of inestigations in the field of fatigue gained by industry and research organizations. Most of the subjects are fatigue test results from specimens and components under constant amplitude, program and random loading. Other reports concern investigations about the cyclic stress-strain behaviour as well as crack propagation, fracture mechanics and residual strength. A considerable number of reports on inestigations of composite materials, especially of graphite epoxies. Their main topics are material properties under service loading conditions and the damage tolerance behaviour of composite structures. Comparisons of different approaches for the prediction of fatigue life and reports on full-scale fatigue testing on aircraft structure are an essential part of this review.