Effect of repair parameters on composite plates under low velocity impact

Albayrak, Mustafa; Gür, Mustafa; Kaman, Mete Onur

doi:10.26701/ems.1020033

Cited by 2 publications

(1 citation statement)

References 25 publications

(31 reference statements)

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“…In another study by Tie et al [19], the effect of the off-axis angle of the patch on low-velocity impact performance was also considered, and the patch parameters were optimized using the surrogate models. Albayrak et al [20] studied the low-velocity impact response of E glass-epoxy composite plate repaired with square patches of different sizes, and large-sized patches can effectively reduce the impact force without considering the damage. The continuum damage mechanics (CDM) method based on the three-dimensional Hashin failure criterion [21,22] can effectively predict the damage of fiberreinforced composites under different modes of impact load, and together with the cohesive zone model (CZM) for predicting delamination damage, it provides a path for the simulation analysis of the impact response of CFRP laminates.…”

Section: Introductionmentioning

confidence: 99%

Effect of patch thickness and size on the low-velocity impact of patch-repaired CFRP composite laminates for rail vehicles

Chen

Peng

Wang

et al. 2022

Preprint

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In this study, a high-strength carbon fiber reinforced composite laminate for rail vehicles was machined as a perforated sample and repaired with a patch of the same material. The response of the repaired laminate to a low-velocity impact with an energy of 30 J was investigated through experiments and simulations. The finite element simulation model was established in Abaquas/Explicit. The model integrated the progressive damage model based on the Hashin failure criterion, which can simulate the intralaminar damage of the fiber and the matrix. The cohesive zone model was used to simulate the delamination damage. According to the finite element analysis results, the mechanism and process of impact damage of the repaired laminates were analyzed. Based on the validated finite element model, the effect of patch size and thickness on impact damage was investigated. The reduction in patch size had little effect on the impact response, but could change the damage mechanism of the repaired laminate and increase the risk of damage to the mother panel. Repair laminate with a patch thickness of 0.6 mm was not able to resist impact and was penetrated.

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