Abstract
In this paper, the effect of corrosion on the performance of the bonded composite patch repair in aluminum alloy A5083 marine structure was investigated using three dimensional finite element methods. To this end, two patches made in carbon/epoxy and boron/epoxy, bonded on corroded plates with and without crack, were tested under different applied loads. The effect of both corrosion and cracked materials on the damage of the adhesive FM73, was also highlighted. The obtained results show that, the corrosion has a significant effect on the quality repair performance. Indeed, it is proved that, the rate of damage increases with the increase of the applied load, and is more significant in the case of plates cracked and repaired by carbon/epoxy patch. Hence, the best performances were obtained using boron/epoxy patches
Highlights
The 5000 family aluminum alloys, and, especially the A5083 alloys, are known for their high resistance to corrosion salinity and ideal alloy for their weldability, making their use a better choice in the marine shipbuilding industry and offshore structures [1]
FDistribution of von Mises stresses in the plates igs. 4 and 5 respectively illustrate the distribution of von Mises stresses under different loadings using rectangular patches in boron/epoxy and carbon/epoxy in the case of a corroded plate without crack and a corroded and cracked plate
Especially the A5083 H11 has a good resistance to corrosion pitting, in the marine environment, making it the best choice for marine industry manufacturing, over time
Summary
The 5000 family aluminum alloys, and, especially the A5083 alloys, are known for their high resistance to corrosion salinity and ideal alloy for their weldability, making their use a better choice in the marine shipbuilding industry and offshore structures [1]. 4 and 5 respectively illustrate the distribution of von Mises stresses under different loadings using rectangular patches in boron/epoxy and carbon/epoxy in the case of a corroded plate without crack and a corroded and cracked plate.
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