High-speed visualizing and mesoscale modeling for deformation and damage of 3D angle-interlock woven composites subjected to transverse impacts

Journal of Industrial Textiles

Abid

Shafiq

et al. 2019

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Composite materials are known for their high stiffness and strength at lower weight as compared to conventional structural materials. Recently, there has been a growing interest in finding the new ways to decrease delamination failure, which is a life limiting factor of laminated composites. This review paper emphasizes on the effects of different reinforcement structures on mode I fracture toughness and possible ways to improve fracture toughness. A brief description on intrinsic and extrinsic mechanisms of crack growth has been discussed along with the earlier investigations and recent developments for mode I fracture toughness testing. Factors that affect the fracture toughness are also discussed. A brief knowledge of mode I fracture toughness of traditional and advanced fiber-reinforced composites is given, which could help researchers to understand fracture behaviors of composites and thus, it can help engineers to design composites with higher interlaminar strength.

Section: D Woven Textile Compositesmentioning

confidence: 99%

“…3D woven fabric composites have the ability to provide superior interlaminar fracture toughness and greater impact damage resistance than 2D conventional laminated composites [28,72,101,102]. Other desirable attributes include weight reduction, improved fatigue and fracture resistance and fully integrated assemblies.…”

Section: D Woven Textile Compositesmentioning

confidence: 99%

Mode I fracture toughness of fiber-reinforced polymer composites: A review

Journal of Industrial Textiles

Abid

Shafiq

et al. 2019

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“…Ji and Kim (2006) conducted low-velocity impact simulation of the composites at mesoscopic scale. Gu and coworkers (Li et al., 2017; Ren et al., 2018; Wu et al., 2017) investigated the dynamic response of the 3D braided and woven composites using meso-scale models. Xu et al.…”

Section: Introductionmentioning

confidence: 99%

Differences of transverse impact damages in 3D angle-interlock woven composites between warp and weft directions

Ren

International Journal of Damage Mechanics

2019

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Transverse impact damages of 3D angle-interlock woven composites have been tested at split Hopkinson pressure bar along warp and weft directions respectively. The impact deformation and damages were photographed with a high-speed camera. A finite element analyses model was established at mesostructure level to unveil the inner yarn, resin damages, and stress distributions. There are significant differences of yarn breakages and interface damage between the two directions. From finite element analysis simulations and scanning electron microscope photographs, we found the warp yarns were in kink band deformation and shear damage, while the weft yarns were in compressive failure and had smooth fractography. The warp yarns which run through-thickness directions impede transverse impact crack propagations in resins and lead to high delamination resistances. The straight weft yarns impart high stiffness and strength to in-plane directions.

“…However, there is a limited work to evaluate mechanisms which depict reinforcement structural effects on crack initiation and evolution process. 3D angle-interlock reinforced composites have vast potential for engineering applications due to special layer by layer interlocked structure [10][11][12][13], nevertheless its toughness properties has not been studied yet.…”

Section: Introductionmentioning

confidence: 99%

Structural influences of two-dimensional and three-dimensional carbon/epoxy composites on mode I fracture toughness behaviors with rate effects on damage evolution

Journal of Industrial Textiles

Sun

2018

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This paper reports the mode I interlaminar fracture toughness and fracture mechanisms of two-dimensional (2D) plain woven composite and three-dimensional (3D) angle-interlock woven composite. The fracture toughness behaviors were tested with double cantilever beam method at the different loading rates from 0.5 to 100 mm/min. Critical strain energy release rate was calculated to compare the difference between the 2D and the 3D woven composites. The fractographs were photographed with scanned electronic microscopy and optical microscopy to show the fracture morphologies. We found that the 3D angle-interlock woven composite has high fracture toughness than that of 2D woven composite. The binder yarns resist the crack initiation and propagation to increase the fracture toughness. While the lower in-plane stiffness of the 3D woven composites should be considered fully for designing the 3D woven composites.