The stress analysis of aluminum plates repaired with composite patch

In this study, notched Aluminum plates were repaired by composite patch. Fundamental parameters for notched 5754 Aluminum plates are the notch length and the notch width. With these parameters, five different notch geometries were prepared for this study. Two types of repairs were applied to notched Aluminum plates as one-side and double-side of composite patch. The same frequency and the orientation angle of the bias fabric carbon fiber used as the composite patch for all samples. The Hysol EA 9396 epoxy was chosen as an adhesive. The composite patches with the adhesive were filled fully to notch regions on the Aluminum plates. After that the samples were prepared by keeping in the vacuum chamber. The one-sided repaired, two-sided repaired and un-repaired samples for all type of notch geometries were tested under the tensile load experimentally. The numerical solution was determined using the finite element method. The effect of the notch sizes and the repair types on the notched Aluminum plates under the tensile loads were concluded. Keywords: Aluminum plate, composite patch, repair, notch.