The tensile behaviour of biaxial and triaxial braided fabrics

Duchamp, Boris; Legrand, Xavier; Soulat, Damien

doi:10.1177/1528083716654469

Cited by 32 publications

(24 citation statements)

References 75 publications

(172 reference statements)

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“…Indeed, yarn behaviour is composed of two main parts: first, a stretching in the direction of the applied load and second, a tensile strength in the same direction. For some 3D warp interlock fabrics architectures, the tensile behaviour is characterized by two peaks in the tensile curve, as schematized in Figure 6, and as exhibited for others fabrics [66]. The appearance of a second peak is due to a significate difference in yarn consumption (warp shrinkage) inside the fabric structure: yarns are not all stretched in the direction of applied load at the same time and breaking occurs in two times.…”

Section: Description Of Mechanical Testsmentioning

confidence: 89%

Influence of 3D warp interlock fabrics parameters made with flax rovings on their final mechanical behaviour

Corbin

Boussu

Ferreira

et al. 2018

Journal of Industrial Textiles

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The three-dimensional weaving process enables to produce near-net shaped complex preforms used as reinforcement of composite materials. However, the lack of knowledge on the mechanical behaviour of these three-dimensional woven structures may restrict their use for composite material. To fill this gap, we have tempted to highlight their specific mechanical properties according to their endogenous parameters. Based on these different architectures produced on the same weaving loom, several non-impregnated coupons have been mechanically characterized in all the directions of the three-dimensional warp interlock fabrics with quasi-static tensile tests in warp and weft directions as well as in-plane shear tests. According to our analyses, it has been revealed that the combination of several parameters as the woven pattern, the end and pick densities and the presence or not of stuffer warp yarns inside the three-dimensional fabrics may significantly influence the mechanical behaviour of the three-dimensional warp interlock architectures.

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Section: Description Of Mechanical Testsmentioning

confidence: 89%

Influence of 3D warp interlock fabrics parameters made with flax rovings on their final mechanical behaviour

Corbin

Boussu

Ferreira

et al. 2018

Journal of Industrial Textiles

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“…The hairiness index represents the total length of the protruding fibers concerning the sensing length of 1 cm of the yarn [19]; it was measured with 5 cyclic tests. The cover factor (CF) is used to measure the braiding filament deposition and is defined as the percent of the mandrel surface covered by the braiding tows [20]. Thus, the MBY and CWY cover factors (CF_MBY and CF_CWY) can be defined as the percentage of flax roving surface covered by PP filaments and are calculated by Equations (1) [21] and (2), respectively, where W M is PP filament width (0.60 mm), N M is number of PP filaments in MBY (here N M = 8), R F is effective flax roving radius (0.47 mm), α is PP braiding angle in MBY, and T M is PP wrapping turns per meter in CWY.…”

Section: Textile Properties Testingmentioning

confidence: 99%

Effects of Micro-Braiding and Co-Wrapping Techniques on Characteristics of Flax/Polypropylene-Based Hybrid Yarn: A Comparative Study

et al. 2020

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Micro-braiding and co-wrapping techniques have been developed over a few decades and have made important contributions to biocomposites development. In this present study, a set of flax/polypropylene (PP) micro-braided and co-wrapped yarns was developed by varying different PP parameters (PP braiding angles and PP wrapping turns, respectively) to get different flax/PP mass ratios. The effects on textile and mechanical characteristics were studied thoroughly at the yarn scale, both dry- and thermo-state tensile tests were carried out, and tensile properties were compared before and after the braiding process to study the braidabilities. It was observed that PP braiding angles of micro-braided yarn influenced the frictional damage on surface treatment agent of flax roving, the cohesive effect between PP filaments/flax roving, and the PP cover factor; PP wrapping turns of co-wrapped yarn had a strong impact on the flax roving damage and the PP coverage, which further influenced the characteristics. Micro-braided yarn and co-wrapped yarn with the same flax/PP mass ratio were compared to evaluate the two different hybrid yarn production techniques; it was proven that micro-braided yarn presented better performance.

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“…The braid angle greatly affects the mechanical properties of composite braids, and many studies have examined its effect on the mechanical performance of braided composites [13,14,15,16,17,18,19]. Previous studies have established that an increase in braid angle is accompanied by a decrease in tensile strength [20,21], peak failure load [22,23] and tensile modulus [23,24],…”

Section: Introductionmentioning

confidence: 99%

Mechanical performance of carbon-fibre braided composite tubes in tension and compression

Javaid¹,

Aumjaud²,

Whelan³

et al. 2021

Preprint

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This article examines the effect of braid angle on the mechanical performance of carbon-epoxy braided tubes in tension and compression. Vacuum-assisted resin transfer moulding is used to produce a variety of tubes with several combinations of 15◦and 20◦ braid angles. As uniaxial tensile testing of cylindrical tubes is not trivial, two tensile testing fixture designs are explored. It is found that a combination of mechanical and adhesive gripping produces repeatable fractures between the grips, with no slipping. Tubes with lower braid angles exhibit higher strengths both in tension and compression, as well as absorbing greater amounts of energy in compression.

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The tensile behaviour of biaxial and triaxial braided fabrics

Cited by 32 publications

References 75 publications

Influence of 3D warp interlock fabrics parameters made with flax rovings on their final mechanical behaviour

Influence of 3D warp interlock fabrics parameters made with flax rovings on their final mechanical behaviour

Effects of Micro-Braiding and Co-Wrapping Techniques on Characteristics of Flax/Polypropylene-Based Hybrid Yarn: A Comparative Study

Mechanical performance of carbon-fibre braided composite tubes in tension and compression

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