Multi-Scaled Modeling the Mechanical Properties of Tubular Composites Reinforced with Innovated 3D Weft Knitted Spacer Fabrics

Omrani, Elahe; Hasani, Hossein; Dibajian, S. H.

doi:10.1007/s10443-017-9613-9

Cited by 14 publications

(8 citation statements)

References 28 publications

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“…The deformation mechanism was discussed in our previous published article . While these structures are subjected to IHP, failure phenomenon is occurred due to deformation of inner layer and buckling the connecting layers which in turn causes to extent the outer layer.…”

Section: Resultsmentioning

confidence: 99%

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

Omrani

Hasani

Esmaeili

2017

J of Applied Polymer Sci

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This article aimed to investigate the mechanical performance of 3D integrated knitted spacer composites with a tubular shape, in term of internal hydrostatic and external static pressures (ESP). All the tubular-knitted fabrics were produced on a modern flat knitting machine using untwisted glass and HT-nylon yarns. Then, the epoxy resin was transferred through the whole fabric structure via vacuum infusion molding process. Produced tubular composites were subjected to internal hydrostatic and ESP. Accordingly, force-displacement curves were obtained and experimental results were discussed. The results revealed that the tubular composite samples containing non-knitting yarns show 27.33 and 37.50% improvement in internal hydrostatic and ESP, respectively, compared with the plain knitted fabric reinforced composite. Also, the finding demonstrated that mechanical performance of the tubular-knitted spacer composites is highly affected by aspect ratio and the number of connecting layers. Knitted spacer reinforced composite containing 5 and 10 connecting layers can improve the resistance against internal hydrostatic pressure 35.08 and 51.29%, respectively, compared with the plain knitted reinforced composites. In this case, 84.20 and 89.86% improvement can be achieved in term of the resistance against ESP.

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Section: Resultsmentioning

confidence: 99%

“…Their results showed that the produced panels have higher compression resistance than the conventional woven and warp‐knitted spacer composites. Omrani et al . simulated mechanical performance of thermoset composites reinforced with tubular spacer weft‐knitted fabric using finite element method.…”

Section: Introductionmentioning

confidence: 99%

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

Omrani

Hasani

Esmaeili

2017

J of Applied Polymer Sci

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“…using Flat knitting machine. Omrani et al 8 used a newly-designed tubular composite reinforced with 3 D spacer weft-knitted fabrics, and studied the effects of its structural parameters on some mechanical properties such as external static and internal pressures. Ramakrishna and Hull 9 investigated the energy absorption capability of the epoxy composite pipes reinforced with 1 Â 1 rib carbon weft-knitted fabric.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental study of internal pressure behaviour of integrated and non-integrated weft-knitted reinforced composite elbows

Mojarrad

Dabiryan

Rezadoust

et al. 2021

Journal of Composite Materials

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This research aims to study the internal pressure behaviour of integrated and non-integrated composite elbows. For this purpose, weft-knitted integrated preforms were produced on the CMC-330-TC Flat knitting machine. Composite elbows reinforced with integrated weft-knitted preform were fabricated using the bladder molding technique. In addition, the non-integrated composite elbows were provided by wrapping the weft-knitted fabric on a plaster mold and hand lay-up impregnation method. To perform the pressure test, a fixture was designed and manufactured. Produced samples were subjected to the internal pressure test. Experimental results show that integrated composite elbow has higher hydrostatic pressure resistant. The internal pressure behaviour of integrated composite was simulated using the multi-scale model. Results showed that integrated composite elbow has a higher resistance against internal pressure than non-integrated composite elbows, so that the integrated elbows failed at 12.5-bar pressure, while the non-integrated elbow failed at 9.5-bar pressure.

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“…These models concern mainly 2D knitted fabrics. Still, a literature survey shows a limited number of models dealing with the mechanical behavior of warp knitted spacers exemplified by [ 17 , 18 , 19 ], as well as weft knitted spacers [ 20 , 21 ]. The model proposed by Hamedi [ 21 ], simulates the flexural behavior of weft knitted spacer fabrics with a constant width (connected through knitted layers), considering the geometrical specificities proposed by Vassiliadis [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

FEM Analysis of Textile Reinforced Composite Materials Impact Behavior

et al. 2021

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Composite materials reinforced with textile fabrics represent a complex subject. When explaining these materials, one must consider their mechanical behavior in general, and impact resistance in particular, as many applications are characterized by dynamic strains. Impact characteristics must be considered from the early stages of the design process in order to be controlled through structure, layer deposition and direction. Reinforcement materials are essential for the quality and behavior of composites, and textile reinforcements present a large range of advantages. It takes a good understanding of the requirements specific to an application to accurately design textile reinforcements. Currently, simulations of textile reinforcements and composites are efficient tools to forecast their behavior during both processing and use. The paper presents the steps that must be followed for modelling the impact behavior of composite materials, using finite element analysis (FEM). The FEM model built using Deform 3D software offers information concerning the behavior structure during impact. The behavior can be visualized for the structure as a whole and, for different sections, be considered significant. Furthermore, the structure’s strain can be visualized at any moment. In real impact tests, this is not possible due to the very short time interval and the impossibility to record inside the structure, as well as to record all significant stages using conventional means.

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Multi-Scaled Modeling the Mechanical Properties of Tubular Composites Reinforced with Innovated 3D Weft Knitted Spacer Fabrics

Cited by 14 publications

References 28 publications

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

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

Numerical and experimental study of internal pressure behaviour of integrated and non-integrated weft-knitted reinforced composite elbows

FEM Analysis of Textile Reinforced Composite Materials Impact Behavior

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