Manufacture and multiaxial test of composite tube specimens with braided glass fiber reinforcement

Hufenbach, W.; Błażejewski, Wojciech; Kroll, Lothar; Böhm, Robert; Gude, Μaik; Czulak, A.

doi:10.1016/j.jmatprotec.2005.02.212

Cited by 18 publications

(11 citation statements)

References 7 publications

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“…It confirms the results obtained by the authors in their earlier studies . According to the classic theory of laminates, an advantageous situation occurs when the rigid fibers located in the more deformable matrix fracture as first . This means that, in the moment of laminate failure, the fibers are maximally tensed, that is they work by carrying the maximum loads.…”

Section: Analysis Of the Resultssupporting

confidence: 90%

“…Stitched preform‐based laminates are called the “stitched laminates,” whereas those with the 3D fabric base are called the “3D laminates.” Such “structural” methods have been so far an efficient alternative for the methods based on the modification of the matrix—for example, by way of adding nanotubes . An alternative for the stitched and 3D laminates is laminates reinforced with braided structures, showing a relatively high deformability as well as a “safe” failure progress .…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the failure progress in the static bending of GFRP laminates reinforced with a classic plain‐woven fabric and a 3D fabric, by means of the vibrations analysis

Kozioł

Figlus

2015

Polymer Composites

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The aim of the work is to evaluate the effectiveness of analysis of a failure progress of the glass fiber reinforced polymer laminate (classic and 3D), during static bending, with the use of high frequency vibration analysis (the order of kHz). During the tests, the instantaneous velocity of the samples' vibrations was recorded. The 3D laminate showed a more favorable course of failure (mostly fiber fracture) than the classic laminate (mostly delamination), but only in the direction transverse to the translaminar interweave strands. In the direction parallel to the interweave, it was also characterized mainly by delamination. It was stated that the vibration measurements significantly broaden and supplement the characteristics of bending, by way of revealing the local degradation changes in the examined material, especially before the initiation of the main stage of failure. The work also describes the frequency bands in which the symptoms of the occurring failures of particular laminate components were observed and where the values of the basic point parameters were estimated, which points to the occurrence of structure failure. The obtained results confirm the effectiveness of the vibration analysis as a tool for the evaluation of the course of composite material failure under static loads. POLYM. COMPOS., 38:1070–1085, 2017. © 2015 Society of Plastics Engineers

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Section: Analysis Of the Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Evaluation of the failure progress in the static bending of GFRP laminates reinforced with a classic plain‐woven fabric and a 3D fabric, by means of the vibrations analysis

Kozioł

Figlus

2015

Polymer Composites

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“…Braided composites have good shear and torsional strength and stiffness. They also offer increased transverse moduli, transverse strength, damage tolerance, dimensional stability and near net shape manufacturing capabilities [5][6][7][8][9]. Braiding can also be integrated with the pultrusion process, which is a well-known method for manu-facturing composite parts in a continuous way.…”

Section: Introductionmentioning

confidence: 99%

An experimental study on mechanical properties of GFRP braid-pultruded composite rods

Ahmadi¹,

Johari²,

Sadighi³

et al. 2009

Express Polym. Lett.

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Abstract. In this work, a conventional textile braiding machine was modified and added to a pultrusion line in order to produce glass fiber reinforced composite rods by braiding-pultrusion technique. Braid-pultruded (BP) rods were produced with three braid roving linear densities and also with three different braid angles. To study the influence of overbraiding on mechanical properties of pultruded rods, unidirectional (UD) rods, without braided fabric, were produced, as well. All rod types were subjected to tensile, bending and torsion tests. The experimental results showed that BP rods have considerably higher shear modulus, but lower tensile modulus and flexural rigidity than those of UD pultruded rods, when fiber volume fraction is kept constant. Moreover, rods produced with higher braid roving linear densities had better torsional, but lower tensile and flexural properties. The highest shear modulus was observed in BP rods with braid angle of 45°.

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“…More specifi cally, the overbraiding technique or the 3D-rotary braiding technique is used to manufacture braids of elementary shapes, which can be used as reinforcement of lightweight structures [20][21][22][23].…”

Section: Branched Fibre-reinforced Composites Monocotyledons Such As mentioning

confidence: 99%

From natural branchings to technical joints: branched plant stems as inspiration for biomimetic fibre-reinforced composites

Masselter¹,

Haushahn²,

Schwager³

et al. 2013

Int. J. DNE

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The manufacturing of nodal elements and/or ramifi cations with an optimised force fl ow is one of the major challenges in many areas of fi bre-reinforced composite technology. The examples include hubs of wind-power plants, branching points of framework constructions in building industry, aerospace, ramifi ed vein prostheses in medical technology or the connecting nodes of axel carriers. Addressing this problem requires the adaptation of innovative manufacturing techniques and the implementation of novel mechanically optimised fi bre-reinforced structures. Consequently, the potential of hierarchically structured plant ramifi cations as concept generators for innovative, biomimetic branched fi bre-reinforced composites was assessed by morphological and biomechanical analyses. Promising biological models were found in monocotyledons with anomalous secondary growth, i.e. Dracaena and Freycinetia, as well as in columnar cacti such as Oreocereus and Corryocactus. These plants possess ramifi cations with a pronounced fi bre matrix structure and a special hierarchical stem organization, which markedly differs from those of other woody plants by consisting of isolated fi bres and/or wood strands running in a partially lignifi ed parenchymatous matrix. The angles of the Y-and T-shaped ramifi cations in plants resemble those of the branched technical structures. Our investigations confi rm that the ramifi cations possess mechanical properties promising for technical applications, such as a benign fracture behaviour, a good oscillation damping caused by high energy dissipation and a high potential for lightweight construction. The results demonstrate the high potential for a successful technical tran sfer and led to the development of concepts for producing demonstrators in lab-bench and pilot plant scale that already incorporate 'solutions inspired by nature'.

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Manufacture and multiaxial test of composite tube specimens with braided glass fiber reinforcement

Cited by 18 publications

References 7 publications

Evaluation of the failure progress in the static bending of GFRP laminates reinforced with a classic plain‐woven fabric and a 3D fabric, by means of the vibrations analysis

Evaluation of the failure progress in the static bending of GFRP laminates reinforced with a classic plain‐woven fabric and a 3D fabric, by means of the vibrations analysis

An experimental study on mechanical properties of GFRP braid-pultruded composite rods

From natural branchings to technical joints: branched plant stems as inspiration for biomimetic fibre-reinforced composites

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