DGLR-Publikationsdatenbank - Detailansicht
Titel:
Improving the Fatigue Response of Aerospace Structural Joints
Autor(en):
C. Giummarra, H.R. Zoker
Zusammenfassung:
The effect of various surface treatments on the fretting fatigue and joint fatigue performance of a 7xxx series aluminum alloy was investigated with the objective to reduce the nucleation and growth of fretting cracks and enhance the fatigue life of aerospace joints. The results indicate that anodizing does not influence the fretting fatigue performance and the type of anodizing does not affect the joint fatigue life. UltraCem coating inhibited fretting crack nucleation in the fretting specimen, increasing the fatigue life. Shot peening increased the fretting fatigue life significantly due to the compressive residual stresses it imparts; however, the stresses were not deep enough to influence the fretting cracks which nucleated in the hole bore of the joint specimens. Laser peening and low plasticity burnishing induce deeper compressive residual stresses than shot peening, which appear to inhibit the growth of fretting cracks in both the fretting and joint specimens, resulting in a significant fatigue life improvement.
Veranstaltung:
23rd ICAF Symposium of the international Committee on Aeronautical Fatique, 2005, Hamburg
Medientyp:
Conference Poster
Sprache:
englisch
Format:
A5, 12 Seiten
Veröffentlicht:
DGLR-Bericht, 2005, 2005-03, 23rd ICAF Symposium of the international Committee on Aeronautical Fatique - Proceedings; S.445-456; 2005; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn
Preis:
NA
ISBN:
ISSN:
Kommentar:
Klassifikation:
Stichworte zum Inhalt:
fatigue, anodizing, joints, peening
Verfügbarkeit:
Bestellbar
Veröffentlicht:
2005
Dieses Dokument ist Teil einer übergeordneten Publikation:
23rd ICAF Symposium of the international Committee on Aeronautical Fatique - Proceedings