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Fatigue propagation of induced cracks by stiffeners in repaired panels with composite patches

✍ Scribed by H. Hosseini-Toudeshky; M.A. Ghaffari; B. Mohammadi

Publisher: Elsevier
Year: 2011
Tongue: English
Weight: 644 KB
Volume: 10
Category: Article
ISSN: 1877-7058
DOI: 10.1016/j.proeng.2011.04.542

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✦ Synopsis

In this study, finite element method is used to investigate crack propagation of stiffened aluminum panels repaired with composite patches. For this purpose, 3-D crack-front in general mixed-mode conditions is considered for the analyses. The cracks are considered to be near the stiffener around a rivet and are capable to propagate under a cyclic loading. Effects of rivets distances and their diameter on the crack growth life of repaired panels are investigated. Moreover, the obtained crack-front shapes at various crack growth steps, crack trajectories and life of the unrepaired and repaired panels with various glass/epoxy patch lay-ups are discussed.

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