On Impact Damage and Repair of Composite Honeycomb Sandwich Structures

Article Chemistry, Physical

Numerical Study of Low-Velocity Impact Response of a Fiber Composite Honeycomb Sandwich Structure

Zhou Wen et al.

Summary: This study investigates the low-velocity impact response of honeycomb sandwich structures (HSS) using numerical simulation. The choice of construction material significantly affects the impact resistance and structural stability of the HSS. Glass fiber-reinforced PEEK is identified as the more appropriate face sheet material for the composite HSS, enhancing the overall impact resistance.

MATERIALS (2023)

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Article Engineering, Civil

Behaviour of continuous fibre composite sandwich core under low-velocity impact

Sartip Zangana et al.

Summary: The study found that increasing core thickness improved impact capacity, while increasing core height decreased sandwich strength. Finite element analysis simulated the damage status and mechanism of the novel composite core sandwich. The multi-cell composite corrugated core increased impact capacity, and the trapezoidal composite corrugated sandwich core showed higher specific strength compared to traditional honeycomb, truss, and foam cores.

THIN-WALLED STRUCTURES (2021)

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Article Chemistry, Physical

Micro Fracture Behavior of Composite Honeycomb Sandwich Structure

Guangjian Bi et al.

Summary: The study focused on the dynamic response and mechanical properties of a composite double-layer honeycomb sandwich structure under high-speed impact. The proposed fracture energy calculation method effectively described the structural variation trend, with sensitivity to cell density and material, while the strength of the top core significantly influenced overall energy absorption. The initially designed composite honeycomb sandwich structure showed improved energy absorption compared to traditional honeycomb protection structures.

MATERIALS (2021)

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Article Materials Science, Composites

Scarf patch repair of honeycomb sandwich composites and its simulation optimisation

Longying Yang et al.

Summary: The repair angle significantly influences the bending strength recovery of scarf patch repaired composites, with an optimal repair angle technical parameter of 30:1 achieving up to 99.6% bending strength recovery. The simulation model accurately predicts the failure load of repaired honeycomb sandwich composites with different repair angles, with a maximum error of 4.99% and further optimization reducing the error to 4.49%. This model can effectively reduce the need for repeated experiments, optimize repair angles, and maximize the recovery of composite materials' initial performance.

PLASTICS RUBBER AND COMPOSITES (2021)

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Article Mechanics