A study of the deformation of weft-knit preforms for advanced composite structures Part 1: Dry preform properties

Savci, S.; Curiskis, J.I.; Pailthorpe, M.T.

doi:10.1016/s0266-3538(00)00077-4

Cited by 13 publications

(13 citation statements)

References 11 publications

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“…If a good interface was obtained, the tensile strength should vary both with fiber weight fraction of and with test direction, since knit fabrics show an uneven distribution of the fibers along the plane of the fabric. In weft-knitted fabrics, yarns form loops, which are interconnected and are formed preferentially across the width of the fabric, with the yarns fed at right angles to the direction in which the fabrics are manufactured [14,15] . This means that the relative proportion of the fibers in each direction of the knitted fabric is different, and the in-plane mechanical properties of the fabrics and their composites should vary with test direction, as they are dependent on fiber content [15,16] .…”

Section: Tensile Properties Wkt Compositesmentioning

confidence: 99%

Comparison of the Mechanical Behavior of Plain Weave and Plain Weft Knit Jute Fabric-Polyester-Reinforced Composites

Carvalho

Cavalcante

d’Almeida

2006

Polymer-Plastics Technology and Engineering

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The tensile and impact behavior of jute fabrics-polyester composites-were evaluated as a function of the fabric style (knitted or weaved cloths), fiber weight fraction, and direction of the applied load. The tensile properties of plain-weave-fabricreinforced composites (PWF) were higher than those of plain weft knit cloth composites (WKT) and were dependent on fiber content and test direction. The properties of the WKT, however, were independent of these variables. The results obtained indicate that the orthogonal fiber alignment of weaved cloths favors anisotropy, while the interconnected loops in knit fabrics favors isotropy. The results also indicate weak fiber-matrix interactions in both fabrics and a better fabric impregnation for the plain weave fabric if compared with that of the knit fabric. The impact strengths of both composites were higher than that of the matrix and were shown to increase with fiber content. WKT-reinforced composites showed better impact absorption capacity than PWF composites. This behavior is attributed to the influence of the weaving pattern of the fabrics and to the differences in fabric impregnation by the matrix.

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Section: Tensile Properties Wkt Compositesmentioning

confidence: 99%

Comparison of the Mechanical Behavior of Plain Weave and Plain Weft Knit Jute Fabric-Polyester-Reinforced Composites

Carvalho

Cavalcante

d’Almeida

2006

Polymer-Plastics Technology and Engineering

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“…However, in many published papers [15,16], the change of angles of grids or textiles is measured and quantitative discussion is made. Quite similar study is also found in resin transfer molding (RTM) [17,18]. The problem is that the angle change is valid as the definition of shear strain only within the infinitesimal deformation.…”

Section: Digital Image-based Measurement Technique Of Large Strain DImentioning

confidence: 58%

Study on large deformation characteristics of knitted fabric reinforced thermoplastic composites at forming temperature by digital image-based strain measurement technique

Takano

Zako

Fujitsu

et al. 2004

Composites Science and Technology

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“…The relationship between the physical, mechanical, and simulated formability properties of weft-knit GF preforms were studied by Savci et al [79]. The results for the full Milano structure showed that the plain loop length and tensile properties enabled a good prediction of simulated formability.…”

Section: Properties Of Knitted Preforms and Their Compositesmentioning

confidence: 99%

Knitted Preforms for Composite Applications

Padaki

Alagirusamy

Sugun

2006

Journal of Industrial Textiles

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Knitted structures occupy a special position in composite preforming due to their inimitable characteristics. An insight into the knitted structures with respect to their composite preforming characteristics is presented in this article. Directionality of knitted structures and requirements of high performance fibers for knitting have been discussed. Contourability, net-shape preforming, high dynamic mechanical properties along with easy and rapid manufacturability are the important features of knitted structures to match the composite preform requirements. In this article, the work done in the above areas of research have been critically reviewed.

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A study of the deformation of weft-knit preforms for advanced composite structures Part 1: Dry preform properties

Cited by 13 publications

References 11 publications

Comparison of the Mechanical Behavior of Plain Weave and Plain Weft Knit Jute Fabric-Polyester-Reinforced Composites

Comparison of the Mechanical Behavior of Plain Weave and Plain Weft Knit Jute Fabric-Polyester-Reinforced Composites

Study on large deformation characteristics of knitted fabric reinforced thermoplastic composites at forming temperature by digital image-based strain measurement technique

Knitted Preforms for Composite Applications

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