5xxx Aluminum Sensitization and Application of Laminated Composite Patch Repairs

Hart, Daniel C.

doi:10.1007/978-3-319-42426-2_3

Cited by 5 publications

(1 citation statement)

References 17 publications

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“…Much research has been conducted for composite repair techniques [5][6][7]. The U.S. Navy has developed an approved procedure to repair the affected aluminum alloy area of concern and prevent crack growth while restoring the integrity of the compromised area utilizing composite patching [8]. The procedure currently does not recover the absolute structural integrity of the affected area but is used as a long-term repair.…”

Section: Introductionmentioning

confidence: 99%

Composite Patch Repair for Underwater Aluminum Structures

Bianchi

Kwon

Alley

2019

Journal of Offshore Mechanics and Arctic Engineering

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Both experimental and numerical studies were conducted to investigate the effectiveness of composite patch repair on underwater structures, especially aluminum alloy structures. Physical samples were prepared using 5XXX aluminum plates with a premachined hole and E-glass woven fabric layers. The epoxy resin was selected such that it could be cured underwater. Test samples were prepared under different curing conditions such as dry curing and wet curing with different durations of in-water exposure. Strain gages were attached to all samples. The samples were tested for both tensile and four-point bending loads. Furthermore, numerical modeling and simulations were conducted, and the numerical models were validated against the experimental measurements. Then, the interface normal and shear stresses were determined from the numerical models so as to understand the delamination failure at the interface between the aluminum and composite patches. Underwater composite patching showed good interface strength and potential for successful usage in repairs.

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