Experimental and numerical assessment of aerospace grade composites based on high-velocity impact experiments

Wagner, Tim; Heimbs, Sebastian; Franke, Florian; Burger, Uli; Middendorf, Peter

doi:10.1016/j.compstruct.2018.07.019

Cited by 34 publications

(12 citation statements)

References 22 publications

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“…Considering the previous research [e.g. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] on the impact resistance of thermoplastic matrix composites relevant to the themes of the present paper, then as early as 1985 researchers [2][3][4] first reported that CF/PEEK composites possessed a superior resistance to impact damage, when subjected to an impact loading at relatively low energy levels of up to 12 J, compared with the then currently available CFRPs which employed a matrix of a relatively very brittle, thermosetting epoxy polymer (i.e. CF/Epoxy).…”

Section: Introductionmentioning

confidence: 99%

“…Now, although there has been extensive research on the relatively low-velocity impact on thermoplastic and thermoset matrix CFRP composites, relatively few studies [e.g. [14][15][16][17][18][19] have examined the high-velocity impact of such materials, using for example a gas-gun to achieve relatively high impact velocities, and most of this research has concentrated on using a soft projectile, e.g. gelatine, to simulate a bird strike.…”

Section: Introductionmentioning

confidence: 99%

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The behaviour of thermoplastic and thermoset carbon fibre composites subjected to low-velocity and high-velocity impact

Liu

Ding

et al. 2020

J Mater Sci

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The present paper describes the results from experimental and theoretical modelling studies on the behaviour of continuous carbon fibre/polymer matrix composites subjected to a relatively low-velocity or high-velocity impact, using a rigid, metallic impactor. Drop-weight and gas-gun tests are employed to conduct the low-velocity and high-velocity impact experiments, respectively. The carbon fibre composites are based upon a thermoplastic poly(ether–ether ketone) matrix (termed CF/PEEK) or a thermoset toughened epoxy matrix (termed CF/Epoxy), which has the same fibre architecture of a cross-ply [03/903]2s lay-up. The studies clearly reveal that the CF/PEEK composites exhibit the better impact performance. Also, at the same impact energy of 10.5 ± 0.3 J, the relatively high-velocity test at 54.4 ± 1.0 m s−1 leads to more damage in both types of composite than observed from the low-velocity test where the impactor struck the composites at 2.56 m s−1. The computationally efficient, two-dimensional, elastic, finite element model that has been developed is generally successful in capturing the essential details of the impact test and the impact damage in the composites, and has been used to predict the loading response of the composites under impact loading.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The behaviour of thermoplastic and thermoset carbon fibre composites subjected to low-velocity and high-velocity impact

Liu

Ding

et al. 2020

J Mater Sci

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“…For the impacted plate, 2500 linear quadrilateral elements of type S4R were used, and the total number of nodes was 2601. For a structural level simulation, typical element sizes of 5 mm were performed [20]. A preliminary study was conducted, which validated that the present meshing density (10 mm) was reasonable for comparison purpose, so that the computation efficiency could also be ensured.…”

Section: Numerical Modelmentioning

confidence: 69%

“…From the damage distributions and the local maximum damage, some similar laws can be found with the experimental results of previous literature. Wagner et al [20] have concluded that different carbon fiber composites have very similar ballistic limits but differ in terms of delamination behavior. In present simulations, the local maximum damage induces are highly similar, but the damage areas differ greatly for different composite materials.…”

Section: Front Middle Backmentioning

confidence: 99%

“…Liu et al [19] experimentally studied the damage of hygrothermally conditioned carbon epoxy composites under high-velocity impact. Wagner et al [20] experimentally and numerically assessed different aerospace-grade composite materials under high-velocity impact. Sun et al [21] simulated the eccentric impact of square and rectangular composite laminates embedded with shape-memory-alloy wires.…”

Section: Introductionmentioning

confidence: 99%

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Bird-Strike Resistance of Composite Laminates with Different Materials

2019

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To obtain some basic laws for bird-strike resistance of composite materials in aeronautical application, the high-velocity impact behaviors of composite laminates with different materials were studied by numerical methods. The smoothed particle hydrodynamics (SPH) and finite element method (FEM) coupling models were validated from various perspectives, and the numerical results were comparatively investigated. Results show that the different composite materials have relatively little effect on projectile deformations during the bird impact. However, the impact-damage distributions can be significantly different for different composite materials. The strength parameters and fracture energy parameters play different roles in different damage modes. Lastly, modal frequency was tentatively used to explain the damage behavior of the composite laminates, for it can manifest the mass and stiffness characteristics of a dynamic structure. The dynamic properties and strength properties jointly determine the impact-damage resistance of composite laminates under bird strike. Future optimization study can be considered from these two aspects.

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Finite Element Modeling of Dynamic Failure of Composite Laminates Under Transverse Tensile Loading

Liu

2020

J Fail. Anal. and Preven.

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Experimental and numerical assessment of aerospace grade composites based on high-velocity impact experiments

Cited by 34 publications

References 22 publications

The behaviour of thermoplastic and thermoset carbon fibre composites subjected to low-velocity and high-velocity impact

The behaviour of thermoplastic and thermoset carbon fibre composites subjected to low-velocity and high-velocity impact

Bird-Strike Resistance of Composite Laminates with Different Materials

Finite Element Modeling of Dynamic Failure of Composite Laminates Under Transverse Tensile Loading

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