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Multi-objective optimization of single-sided composite patch repairs
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DOI：10.1016/j.compstruct.2026.120535.png)
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Abstract
En 中文
This study investigates the multi-objective optimization of single-sided bonded patch repairs for carbon/epoxy laminated composites to improve post-impact structural performance. Owing to the inherent asymmetry of single-sided repairs, load path eccentricity and secondary bending are introduced, which may significantly reduce the residual compressive strength. Finite element simulations are performed to evaluate the mechanical responses of the repaired laminates under low-velocity impact and subsequent compression-after-impact loading. A preliminary dimensionless prediction model is developed based on dimensional analysis to describe the nonlinear coupling among geometric, stiffness, and interfacial parameters. A response surface surrogate model combined with the polar angle evolutionary algorithm (PAEA) is then employed for multi-objective optimization, aiming to maximize residual compressive force while minimizing both absorbed energy and structural mass. The results show that patch size, adhesive thickness, and lay-up configuration play dominant roles in repair performance, and the results indicate that patch size, adhesive thickness, and lay-up configuration play important roles in repair performance. The surrogate-model-based candidate solutions provide useful insights into the trade-offs among strength, energy absorption, and weight.
Keywords:
Single-sided composite repair
Dimensional analysis
Polar angle evolutionary algorithm
Multi-objective optimization
Journal
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7.1
Papers:
1.8W
Citations:
8.0W
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