Experimental and numerical studies on low‐velocity impact damage of composite laminates toughened by nickel‐coated carbon fiber veil

Liu, Hui; Qu, Peng; Guo, Yuan; Zhou, Yong; Wan, Guoshun; Jia, Yuxi

doi:10.1002/pc.26555

Cited by 10 publications

(11 citation statements)

References 42 publications

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“…The damage energy absorbed by the specimen can be determined by integrating the suddenly decreasing part in the load-displacement curve, which is displayed in the form of shaded areas in Figure 6. The damage energy absorption ratio r 1 can be calculated by Equation (1).…”

Section: Impact Response Of Various Laminatesmentioning

confidence: 99%

“…Carbon fiber reinforced polymers (CFRPs) can realize outstanding mechanical performance in a wide range of applications; however, they are sensitive to normal impact stress. [1][2][3] CFRPs do not provide negligible warning when they undergo material failure during their service life because a fracture only results in low deformation. 4 In contrast, nacre from mollusk shells shows high strength and hardness, and it exhibits good toughness because of its three-dimensional "bricks and mortar" structure, as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Exploration of impact response and damage mechanism of discontinuous CFRP laminates subjected to low velocity impact

Xiao

et al. 2023

Polymer Composites

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Carbon fiber‐reinforced polymer composites (CFRPs) are widely used in many fields because of their excellent mechanical properties; however, they are very sensitive to low velocity impact. A new‐type biomimetic structure, which has a “bricks‐and‐mortar” arrangement of nacre from mollusk shells, was designed and manufactured for enhancing the impact resistance of the CFRPs. The impact response and absorption of impact energy of this structure were also investigated. Impact damage forms of the biomimetic structure were analyzed based on the surface and internal morphologies. The results indicate that biomimetic structure can decrease the impact damage of the CFRPs. Two damage behaviors of the biomimetic structure were observed under relatively higher impact energy. The discontinuous structure reduces the damage using a smaller load for the first damage and a larger deformation for the second damage, which improves the impact resistance of the CFRPs. The discontinuous structure restrains longitudinal crack propagation to a certain extent, effectively reducing the damaged area of the CFRPs. Thus, the proposed structure can increase the strength retention rate of the material by about 5%. In addition, the compression after impact damage modes of CFRPs with three types of structure are summarized and classified originally.

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Section: Impact Response Of Various Laminatesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Exploration of impact response and damage mechanism of discontinuous CFRP laminates subjected to low velocity impact

Xiao

et al. 2023

Polymer Composites

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“…The results show that fiber hybridization has a significant positive effect on impact resistance, and the sharpness of the impactor can affect peak force, damage area, and energy absorption. Jia et al [ 17 ] studied the carbon fiber composite laminates toughened by nickel‐coated carbon fiber (NiCF) veil interleaves, and the experimental results indicated that the impact damage area decreased by 30.92%, and the residual compressive strength increased by 16.15%. Zhao et al [ 18 ] carried out high‐velocity impact experiments on three types of composite plates, and compared the out‐of‐surface deformation, failure mode, and energy dissipation of different stacking sequences.…”

Section: Introductionmentioning

confidence: 99%

Low‐velocity impact damage and compression after impact behavior of CF/PEEK thermoplastic composite laminates

Liu

Chen

et al. 2022

Polymer Composites

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Impact resistance and damage tolerance are of great significance in the design of composite structures. This study researched the damage and failure mechanism of carbon fiber reinforced poly-ether-ether-ketone (CF/PEEK) composite laminates under the low-velocity impact (LVI) and compression after impact (CAI) loading conditions. The test included four impact energy levels (15, 30, 45, and 60 J) and compared the effect of two different stacking sequences ([0 /90 ] 8S and [0 /45 /90 /À45 ] 4S ) on performance. The results shown that the peak impact force of the two different stacking sequences increased from 7.8 kN/8.3 kN-11.4 kN/13.7 kN, and the CAI strength decreased from 370.5 MPa/419.3 MPa to 212.8 MPa/232.5 MPa, respectively. Nondestructive testing of low-velocity impact specimens by ultrasonic C-Scan was employed to investigate structural damage. Digital image correlation (DIC) was employed to perform full-field displacement measurements for the CAI experiment. The cross-section of typical specimen was observed using a scanning electron microscope (SEM) to determine the failure mode of the specimen. In addition, a 3D damage model based on continuum damage mechanics was established, with the consideration of the interlaminar delamination damage and intralaminar damage. Compared with the experimental results, the errors of the numerical simulation of the peak impact force, impact energy absorption, and CAI strength are 3.8%-14.8%, 3.7%-6.9%, and 2.2%-6.7%, respectively, which verifies the validity and rationality of the model. Furthermore, the numerical model and interpolation function were used to predict the ultimate residual strength.

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“…[6][7][8] Nanoclays in conjunction with conductive fillers and nickel-coated fibers were used to increase the electrical conductivity of polymer composites. [9] Liu et al [10,11] incorporated nickel-coated carbon fiber veils in composite laminates, which improved the impact resistance and interlaminar fracture toughness (G IC , G IIC ), explained by additional energy dissipation through fiber pull-out breakage and peeling of the nickel coating. Ni-coated fiber composites have increased electromagnetic-wave absorptivity, which encourages their use in such applications as radar stealth, [12][13][14][15][16][17][18][19][20][21] interference shielding, [5] and microwave heating.…”

Section: Introductionmentioning

confidence: 99%

Thermal cycling of strained nickel‐coated glass‐epoxy composite laminates: Effects on macro mechanical and fiber‐matrix interface properties

et al. 2022

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Nickel coating of reinforcing fibers via electroless plating can provide superior properties to polymer composites, particularly for radar stealth, although its effect on thermomechanical properties and thermal cycling response are relatively unverified. Thermal cycling of strained nickel‐coated glass fiber epoxy laminates was performed to evaluate its effect through in‐plane shear mechanical testing and fiber‐matrix interface region microscopic observations. Laminates were subjected to 4000 cycles of thermal conditioning (regular and strained). Subsequent in‐plane shear tensile tests revealed a ~10% increase in their ultimate shear strength, which was credited to polymer relaxation and increased plastic energy storage capacity. Atomic force microscopy in force modulation mode showed the most significant fiber‐matrix interface region changes for strained thermal cycled specimens, which we attribute to their higher stress during conditioning and plastic deformation. A relatively short fiber‐matrix interface region length was observed, which we attribute to the lower surface energy of Ni‐glass fiber. Thermomechanical analysis (TMA) revealed a glass‐transition temperature range of 71–110°C, and coefficients of thermal expansion (CTE) were evaluated for several laminate configurations.

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Experimental and numerical studies on low‐velocity impact damage of composite laminates toughened by nickel‐coated carbon fiber veil

Cited by 10 publications

References 42 publications

Exploration of impact response and damage mechanism of discontinuous CFRP laminates subjected to low velocity impact

Exploration of impact response and damage mechanism of discontinuous CFRP laminates subjected to low velocity impact

Low‐velocity impact damage and compression after impact behavior of CF/PEEK thermoplastic composite laminates

Thermal cycling of strained nickel‐coated glass‐epoxy composite laminates: Effects on macro mechanical and fiber‐matrix interface properties

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