Tensile behaviour of regular triaxial braided structures

Rawal, Amit; Sibal, Apurv; Saraswat, Harshvardhan

doi:10.1016/j.mechmat.2015.08.001

Cited by 15 publications

(6 citation statements)

References 20 publications

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“…Del Rosso et al [61] compare tensile behaviours of Dyneema Õ SK75 and Kevlar Õ 49 biaxial micro braids. The understanding of tensile mechanics of braided materials is the subject of works of Rawal [54,[62][63][64], and in the very recent review [65] the key parameters that control the tensile properties of biaxial and triaxial braided structures are described with the models developed for these braids by various researchers. But none of these studies combine manufacturing of braids reinforcement and analysis of the tensile behaviour.…”

Section: Introductionmentioning

confidence: 99%

The tensile behaviour of biaxial and triaxial braided fabrics

Duchamp

Legrand

Soulat

2016

Journal of Industrial Textiles

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The tensile behaviour of braid reinforcement is classically described by the behaviour of composite elaborated from these reinforcements. Few studies concern the tensile behaviour of braided fabrics. In this paper biaxial and triaxial braids are manufactured on a braiding loom. The evolution of key parameters as linear mass and braiding angle in function of process parameters is presented. Braid reinforcements are characterized in uniaxial tensile. The mechanical behaviour is analysed and compared in function of the braiding angle, but also different kinds of braid are considered. A specific behaviour called ''double-peak'' is identified for triaxial braids which have a higher braiding angle. The evolution of the braiding angle measured during tensile tests gives a comprehension on the mechanical behaviour of dry braids. Associated with this experimental study, an analytical model is also proposed, to predict mechanical properties of braid reinforcements.

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Section: Introductionmentioning

confidence: 99%

The tensile behaviour of biaxial and triaxial braided fabrics

Duchamp

Legrand

Soulat

2016

Journal of Industrial Textiles

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“…Past work in the area of triaxial braided composites (TBC) has focused on developing numerical models, finite element models for the prediction of elastic constants and strength of the TBC, mechanical characterization, damage and failure modelling. [9][10][11][12][13][14][15][16][17] Jing et al 18 proposed a numerical model to predict the inplane ultimate strengths of TBC and compared the results with the values from experiments and finite element analysis. Salem and Sorini 19 measured the through-thickness properties of the carbon -epoxy TBC and studied their failure modes.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and mechanical characterization of glass fibre reinforced triaxially braided composites

Marrivada

Chaganti

Sujith

2020

Journal of Composite Materials

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The aim of this research work is to study the mechanical behaviour of dry triaxially braided glass fibre sleeves and its composites experimentally and analytically. The braided glass fibre sleeves for three angles 30°, 45° and 60° were fabricated on a modified maypole vertical braider following a regular braid architecture. Tensile, flexural, short beam shear and impact tests were performed to evaluate the mechanical properties of the composites. A numerical model was developed, which can be used to find the elastic properties and mechanical strength values of the dry braided fabric and its composites. It was observed that the tensile, flexural and interlaminar properties of 30° specimens were more compared to 45° and 60°. The difference between the estimated and experimental values were found to be an average of 8% for tensile moduli and 24% for the tensile strength.

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“…Braids that have been used to make hoses and pipes uses continuous fibers which are effective in suppressing crack growth [1], and have a higher reinforcing effect than molded products using filament winding [2]. Hence braiding has been attracting attention in the field of fiber reinforced composite [3], [4]. Braiding is often integrated with the pultrusion process and is known as braid-pultrusion (BP), and a thermosetting resin has been used as a matrix resin.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Mechanical Properties of Braid-CFRTP Produced by Pultrusion

Tanaka

Kitano

Katayama

et al. 2020

WIT Transactions on the Built Environment

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Braids, which have been used to make hoses and pipes, are getting a lot of attention in the field of fiber reinforced plastics (FRP) due to its high reinforcing effect of continuous fibers. For braided composites, pultrusion, known as braid-pultrusion (BP), is often applied, and mainly thermosetting resins have been used for matrix resin. Considering recyclability and productivity, thermoplastic resins are better to be used for matrix. Nevertheless, the thermoplastic resin has the disadvantage of high viscosity, making it difficult to impregnate into the fiber bundle. The unimpregnated area becomes the starting point of fracture, so it is necessary to develop a method to improve the impregnation property. In this study, to improve the impregnation property of the braided composite in BP using a thermoplastic resin, a new pre-impregnation method of resin was developed using a solution in which PA6 was dissolved in HFIP. For comparison, three types of specimens were prepared: two types of specimens were obtained by pultruding the braids once or twice through the die without pre-impregnation, while the third type was pre-impregnated rods pultruded once using the same die. The molded product pre-impregnated with the HFIP solution of PA6 showed the lowest porosity and the highest impregnation ratio, resulting in the highest tensile strength.

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Tensile behaviour of regular triaxial braided structures

Cited by 15 publications

References 20 publications

The tensile behaviour of biaxial and triaxial braided fabrics

The tensile behaviour of biaxial and triaxial braided fabrics

Fabrication and mechanical characterization of glass fibre reinforced triaxially braided composites

Evaluation of the Mechanical Properties of Braid-CFRTP Produced by Pultrusion

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