Mechanical performance of tubular composites reinforced by innovative 3D integrated knitted spacer fabrics

Omrani, Elahe; Hasani, Hossein; Esmaeili, Faraneh

doi:10.1002/app.46074

Cited by 9 publications

(5 citation statements)

References 26 publications

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“…Glass fiber, a high performance fiber, is extensively used in tubular composites due to its high mechanical properties and performance/cost ratio. 22,23 In order to obtain glass-fiber WKBT fabric with stable and compact structure, it is significant to explore the relationship between different knitting structures and stitch yarns of WKBT fabrics and basic mechanical properties. Six kinds of WKBT fabrics were prepared, which respectively were PET 1 -GF-GF, PET2FB-PET 1 -GF-GF, PTFE-GF-GF, PTFE F -PTFE-GF-GF, PTFE B -PTFE-GF-GF and PTFE FB -PTFE-GF-GF.…”

Section: Introductionmentioning

confidence: 99%

Structural design and mechanical properties of glass fiber weft-knitted biaxial tubular fabrics

Zhou,

Jiang

2023

Journal of Industrial Textiles

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In order to design glass fiber weft-knitted biaxial tubular (WKBT) fabric with the excellent dimensional stability and outstanding mechanical properties, six kinds of WKBT fabrics were prepared by four kinds of knitting structures (1 + 1 rib structure, face plating structure, back plating structure and face and back plating structure) and two kinds of stitch yarns (polyester and polytetrafluoroethylene fiber). The tensile properties, tearing properties and bursting tearing properties of WKBT fabrics with different binding tightness were investigated. The results showed that the failure of WKBT fabric was composed of the breakage of insertion yarns and the breakage of knitting structures. The tightness of knitting structures have significant effect on the mechanical properties of WKBT fabric. Compared with 1 + 1 rib structure, the plating structure affects the mechanical properties of WKBT fabrics by improving the weft density, binding tightness and dimensional stability. The kind of stitch yarn is another factor that affects the mechanical properties of WKBT fabrics.

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Section: Introductionmentioning

confidence: 99%

Structural design and mechanical properties of glass fiber weft-knitted biaxial tubular fabrics

Zhou,

Jiang

2023

Journal of Industrial Textiles

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“…Despite this fact, they are not flexible enough, mostly because of the reinforcements’ two-dimensional (2D) structure, which leads to high mechanical property performance only in the direction of the fibers. As an alternative to these reinforcements, knitted fabrics offer a capability for large 3-dimensional (3D) deformation [ 1 , 2 , 3 ]. Knitted fabrics have the potential to be employed as reinforcement in polymer composites and can be produced by robotic textile manufacturing processes, which can introduce a new generation of functional material systems with tailored structural characteristics [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Mechanical Behavior of a Weft-Knitted Carbon Fiber Composite under Tensile Loading

et al. 2022

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Knitted textiles are a popular reinforcement in polymer composites for their high drape properties and superior impact energy absorption, making them suitable for specific composite components. Nevertheless, limited attention has been paid to modeling the mechanical behavior of knitted fabric composites since knitted textiles generally offer lower stiffness and strength. This study presents a 3D finite element (FE) modeling of a precise geometrical model of weft-knitted carbon fiber thermoplastic composite to better understand its nonlinear mechanical behavior and interface damage mechanisms under tension. Toward this end, a representative volume element (RVE) of the weft-knitted fabric composite with periodic boundary conditions (PBCs) is generated based on actual dimensions. The validity of the textile RVE to represent the macroscopic behavior was evaluated prior to analyzing the composite. The effect of fiber tow/matrix debonding during tension on the mechanical behavior of the composite is investigated using the cohesive zone model (CZM). Finally, the predicted results of the mechanical behavior of the composite with and without considering the interface failure are compared with the experimental measurements. It is found that the fiber tow/matrix interfacial strength has a significant effect on the tensile performance of the knitted fabric composites, particularly when they are subjected to a large strain. According to the simulation results, the highest tensile performance of the composite is achieved when the interfacial debonding is prevented. However, considering the fiber/matrix debonding in the modeling is essential to achieve a good agreement with the experimental results. In addition, it is concluded that stretching the fabric before composite manufacturing can substantially increase the tensile stiffness of the knitted composite.

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“…Omrani et al [12,13] produced tubular composites reinforced with 3D-FKSFs and investigated their behavior in terms of external static and internal hydrostatic pressures. The effect of cross-sectional shape of glass-epoxy composites reinforced with 3D-FKSFs on their low-velocity impact behavior using drop weight impact test was investigated by Azadian et al [14,15].…”

Section: Introductionmentioning

confidence: 99%

Process development and compression behavior of innovative 3D bi-directional flat-knitted spacer-reinforced composites

Shirazi

Hasani

2021

Journal of Industrial Textiles

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3D knitted fabrics are regarded as a viable option for advanced composite materials. Flat-knitted spacer fabrics (FKSF) which are in the category of 3D knitted structures have attracted many attentions due to outstanding characterizations such as high formability and good impact behavior. These structures consist of two surface layers which are linked together by multiple knitted connecting layers. Despite the merits of 3D-FKSFs as composite reinforcements, they have some structural restrictions such as limited thickness. This study aims to develop and characterize bi-directional 3D knitted spacer structures which could be replaced with conventional FKSFs. In the developed structures, the upper and lower surface layers are connected together by two truncated pyramids which can be configurated in any dimensions using an innovative knitting technique. For providing a report regarding their compression behavior, these 3D structures were produced in two different thicknesses on an electronic flat knitting machine. Then, they were impregnated with epoxy resin via vacuum resin transfer molding and the cured composites were subjected to compression force. The results revealed that their compression behavior is similar to the behavior of conventional honey-comb sandwich structures.

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Mechanical performance of tubular composites reinforced by innovative 3D integrated knitted spacer fabrics

Cited by 9 publications

References 26 publications

Structural design and mechanical properties of glass fiber weft-knitted biaxial tubular fabrics

Structural design and mechanical properties of glass fiber weft-knitted biaxial tubular fabrics

Numerical Simulation of the Mechanical Behavior of a Weft-Knitted Carbon Fiber Composite under Tensile Loading

Process development and compression behavior of innovative 3D bi-directional flat-knitted spacer-reinforced composites

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