Mechanical behaviour of plain-knit reinforced injected composites: Effect of inlay yarns and fibre type

Balea, Laura; Dusserre, Gilles; Bernhart, Gérard

doi:10.1016/j.compositesb.2013.07.028

Cited by 36 publications

(32 citation statements)

References 22 publications

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“…Conducting experimental studies for each woven composite with different reinforcing materials is not advantageous because the results differ significantly for each type of microstructure of the woven PCM [33][34][35]. It should also be borne in mind that it is fundamentally impossible to implement unidirectional material in a reinforced composite sleeve composite (φ=0° and φ=90°) and therefore it is impossible to experimentally determine basic physical and mechanical characteristics of PCM [22,23,36].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining the mechanical characteristics of composite materials reinforced with woven preforms

Kondratiev¹,

Andrieiev²,

Shevtsova³

2021

EEJET

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Reduction of the complexity of production of articles from composite materials is largely ensured by the use of reinforcing semi-finished products in which fibers pre-form a framework. Among all the variety of reinforcing systems, woven sleeves (preforms) occupy a special place. The high degree of deformability in a nonimpregnated condition makes it possible to lay this reinforcement on any surface without folds and cuts that provide preservation of strand continuity. This advantage of woven sleeves is accompanied by a change in local reinforcement angles and, consequently, the variable nature of physical and mechanical characteristics of the curved part surface. A method for calculating physical and mechanical characteristics of the composite based on preforms at any point of the part depending on the pattern of laying strands on a curved surface has been developed. The possibility of application of the rod model of the composite to describe physical and mechanical characteristics of the composite material with a woven reinforcement was analyzed. The model essence consists in that the composite is modeled by a diamond-shaped rod system. The rhombus sides serve as fibers and the diagonals as the binder. To verify the theoretical results and substantiate practical recommendations, a series of experimental studies were performed based on the formation of material specimens from two types of woven sleeves with different reinforcement angles. The experimental study program included tensile, bending, and compression tests. A fairly good convergence of theoretical and experimental data was obtained. For example, a square of the correlation coefficient was not less than 0.95 for the modulus of elasticity, not less than 0.8 for the Poisson's ratio, and not less than 0.9 for tensile and compressive strengths. This is the rationale for using the rod model to describe the considered class of composites. The use of the developed procedure will make it possible to increase the perfection of the considered class of designs and obtain rational parameters of the process of their manufacture.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining the mechanical characteristics of composite materials reinforced with woven preforms

Kondratiev¹,

Andrieiev²,

Shevtsova³

2021

EEJET

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“…Glass fibre, with breaking strength of 0.65 N/tex, was selected for both the ground knitted yarn and the inlay yarns due to its low cost, availability on the market and mechanical properties -particularly its inextensibility (Haller et al, 2006;Balea et al, 2014). The use of two needle beds created a channel for the weft inlay to be inserted, while all Textile technologies needles were inactive.…”

Section: Methodsmentioning

confidence: 99%

Textile technologies for the manufacture of three-dimensional textile preforms

Ishmael

Fernando

Andrew

et al. 2017

RJTA

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Purpose This paper aims to provide an overview of the current manufacturing methods for three-dimensional textile preforms while providing experimental data on the emerging techniques of combining yarn interlocking with yarn interlooping. Design/methodology/approach The paper describes the key textile technologies used for composite manufacture: braiding, weaving and knitting. The various textile preforming methods are suited to different applications; their capabilities and end performance characteristics are analysed. Findings Such preforms are used in composites in a wide range of industries, from aerospace to medical and automotive to civil engineering. The paper highlights how the use of knitting technology for preform manufacture has gained wider acceptance due to its flexibility in design and shaping capabilities. The tensile properties of glass fibre knit structures containing inlay yarns interlocked between knitted loops are given, highlighting the importance of reinforcement yarns. Originality/value The future trends of reinforcement yarns in knitted structures for improved tensile properties are discussed, with initial experimental data.

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“…Экспериментальные исследования, среди которых можно выделить работы [Behera, Dash, 2015;Nilakantat, Gillespie, 2013;Balea et al, 2014], показали, что механические характеристики гибких тканых композитов существенно зависят от внутренней геометрической структуры ткани (толщина и интервал укладки нитей, способ плетения и др.). При моделировании гибких тканых композитов методом конечных элементов (МКЭ) одной из основных проблем является необходимость адекватного описания переплетения нитей в армирующей ткани, что в совокупности с присущей таким материалам физической и геометрической нелинейностью требует значительных вычислительных ресурсов при решении задач деформирования конструкций из тканых композитов.…”

Section: Introductionunclassified