Characterization of Fatigue Crack Growth Rate of AA6056 T651 and T6: Application to Predict Fatigue Behaviour of Stiffened Panels

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

Paulo Tavares de Castro (Author) FEUP; P.M.G.P. Moreira (Author) FEUP; V. Richter-Trummer (Author) FEUP; S.M.O. Tavares (Author) FEUP

Conference proceedings International

Title: ADVANCED MATERIALS FORUM V, PT 1 AND 2

Pages: 1511-1517

5th International Materials Symposium/14th Conference of the Sociedade-Portuguesa-de-Materiais

Lisbon, PORTUGAL, APR 05-08, 2009

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ISI Web of Knowledge - 5 Citations

Scopus - 8 Citations

Other information

Authenticus ID: P-003-9YQ

DOI: 10.4028/www.scientific.net/msf.636-637.1511

Abstract (EN): Tensile and fatigue crack growth tests of the 6056 T651 and T6 aluminium alloys were carried out. The fatigue crack propagation tests were performed on compact tension 4mm thick (CT) specimens, under cyclic loading with R ratios 0.1 and 0.5. The resulting data was used to predict the fatigue behaviour of stiffened panels subjected to fatigue loading under similar R ratios. The AA6056-T651 panels were fabricated using High Speed Machining (HSM) starting with 30mm thick plates. AA6056-T651 CT specimens were cut from the panels mentioned above, whereas AA6056-T6 CT specimens were machined from 5mm thick material. It was found that the AA6056-T651 (HSM material) specimens, machined from a 30mm thick plate presented higher rupture and yield stress than the AA6056-T6 material extracted from a 5mm thick plate. When tested at the same R value the AA6056-T6 specimens present higher crack growth rate than the AA6056-T651 specimens.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7