Relevant bibliographies by topics / Reinforcement fabrics

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Reinforcement fabrics'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Reinforcement fabrics"

1

Li, Xiaoying, Gaoming Jiang, Xiaolin Nie, Pibo Ma, and Zhe Gao. "Knitting Technologies And Tensile Properties Of A Novel Curved Flat-Knitted Three-Dimensional Spacer Fabrics." Autex Research Journal 15, no. 3 (September 1, 2015): 191–97. http://dx.doi.org/10.1515/aut-2015-0006.

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AbstractThis paper introduces a knitting technique for making innovative curved three-dimensional (3D) spacer fabrics by the computer flat-knitting machine. During manufacturing, a number of reinforcement yarns made of aramid fibres are inserted into 3D spacer fabrics along the weft direction to enhance the fabric tensile properties. Curved, flat-knitted 3D spacer fabrics with different angles (in the warp direction) were also developed. Tensile tests were carried out in the weft and warp directions for the two spacer fabrics (with and without reinforcement yarns), and their stress–strain curves were compared. The results showed that the reinforcement yarns can reduce the fabric deformation and improve tensile stress and dimensional stability of 3D spacer fabrics. This research can help the further study of 3D spacer fabric when applied to composites.
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Bel, Sylvain, Nahiene Hamila, and Philippe Boisse. "Analysis of Non-Crimp Fabric Composite Reinforcements Forming." Key Engineering Materials 504-506 (February 2012): 219–24. http://dx.doi.org/10.4028/www.scientific.net/kem.504-506.219.

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Abstract Two experimental devices are used for the analysis of the deformation mechanisms of biaxial non-crimp fabric composite reinforcements during preforming. The bias extension test, commonly use for the shear behaviour characterisation of woven fabrics, allows to highlight the sliding between the two plies of the reinforcement. This sliding is localized in areas of high gradient of shearing. This questions the use of bias extension test in determining the shear stiffness of the studied reinforcement. Then a hemispherical stamping experiment, representative of a preforming process, allows to quantify this sliding. The slippage is defined as the distance, projected onto the middle surface, of two points initially opposed on both sides of the reinforcement. For both experiments, the characteristic behavior of the non-crimp fabric reinforcement is highlighted by comparison with a woven textile reinforcement. This woven fabric presents only a very little sliding between warp and weft yarns during preforming. This aspect of the deformation kinematics of the non-crimp fabric reinforcement must be considered when simulating the preforming.
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Dabiryan, Hadi, Fatemeh Hasanalizade, and Mojtaba Sadighi. "Low-velocity impact behavior of composites reinforced with weft-knitted spacer glass fabrics." Journal of Industrial Textiles 49, no. 4 (July 9, 2018): 465–83. http://dx.doi.org/10.1177/1528083718787533.

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Structural parameters of fabrics influence the mechanical behaviour of fabric-reinforced composites. Weft-knitted spacer fabrics have high energy absorption capacity. In this paper, low-velocity impact behavior of composites reinforced with weft-knitted spacer fabrics has been studied using energy-balance method. The effect of fabric geometry on the impact behavior of composites was investigated. A theoretical model was generated to predict the energy dissipated through the impact, considering the structural parameters of fabrics as reinforcement of composites. For this purpose, dissipated energies due to contact, membrane and bending deformation of fabrics, and buckling deformation of spacer yarns were considered. In order to evaluate the proposed model, weft-knitted spacer fabrics with two types of spacer yarn's orientation were used as reinforcement of composites. Low-velocity impact examinations were performed using the drop hammer testing machine. The results showed that the model has about 12 and 13% error in prediction of dissipated energies of different samples. Comparison between theoretical and experimental results confirms that the proposed model is capable to predict the impact behavior of weft-knitted spacer fabric-reinforced composites.
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Volik, A. R., and Ya Ya Novitski. "Experimental studies of reinforced concrete beams with external reinforcement of the tensioned face using composite fabrics." Vesnik of Yanka Kupala State University of Grodno. Series 6. Engineering Science 12, no. 1 (September 10, 2022): 117–25. http://dx.doi.org/10.52275/2223-5396-2022-12-1-117-125.

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The object of the study is reinforced concrete beams that are reinforced with technical polyamide (kapron) fabric produced by Branch “Khimvolokno Plant” JSC “Grodno Azot”, and fiberglass, manufactured by JSC “Polotsk-Steklovolokno”. The relevance of the stems from the need to obtain and study experimental data of the load-bearing capacity, fracture pattern, crack resistance and cracking of reinforced concrete beams reinforced with composite fabrics, since the topic of restoring the load-bearing capacity of reinforced concrete structures or their strengthening is currently very relevant. Reinforcement of bent reinforced concrete structures with composite fabrics allows using fabrics along the outer edges of the structure, as they are resistant to the external environment and are not subject to corrosion, and represent external composite reinforcement, which, together with metal reinforcement, perceive tensile forces. The most common system for the restoration of reinforced concrete structures is currently the system of external reinforcement of carbon tapes, but the use of this material is limited by high cost. The aim of the study is to experimentally confirm the possibility of effective use of technical polyamide (kapron) fabric, produced by Branch “Khimvolokno Plant” JSC “Grodno Azot”, and glass fabric, produced by JSC “Polotsk-Steklovolokno”, to strengthen the stretched face of reinforced concrete bent structures. Two reinforcement options are presented: gluing horizontal tapes along the entire length on the lower stretched face and the device of a U-shaped clip of fabrics in the stretched zone. Experimental studies have shown that the external reinforcement of the stretched zone with technical polyamide (kapron) fabric produced by Branch “Khimvolokno Plant” JSC “Grodno Azot”, and fiberglass manufactured by JSC “Polotsk-Steklovolokno” change the nature of destruction, increase load-bearing capacity of reinforced concrete beams by 16–38 % in depending on the material and method of reinforcement, affect the crack resistance and crack formation. The results of experimental studies made it possible to solve an important applied problem of the effective use of these composite materials as external reinforcement of the tension face of bending reinforced concrete beams.
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Garcia Filho, Fabio da Costa, Fernanda Santos da Luz, Lucio Fabio Cassiano Nascimento, Kestur Gundappa Satyanarayana, Jaroslaw Wieslaw Drelich, and Sergio Neves Monteiro. "Mechanical Properties of Boehmeria nivea Natural Fabric Reinforced Epoxy Matrix Composite Prepared by Vacuum-Assisted Resin Infusion Molding." Polymers 12, no. 6 (June 9, 2020): 1311. http://dx.doi.org/10.3390/polym12061311.

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Natural lignocellulosic fibers and corresponding fabrics have been gaining notoriety in recent decades as reinforcement options for polymer matrices associated with industrially applied composites. These natural fibers and fabrics exhibit competitive properties when compared with some synthetics such as glass fiber. In particular, the use of fabrics made from natural fibers might be considered a more efficient alternative, since they provide multidirectional reinforcement and allow the introduction of a larger volume fraction of fibers in the composite. In this context, it is important to understand the mechanical performance of natural fabric composites as a basic condition to ensure efficient engineering applications. Therefore, it is also important to recognize that ramie fiber exhibiting superior strength can be woven into fabric, but is the least investigated as reinforcement in strong, tough polymers to obtain tougher polymeric composites. Accordingly, this paper presents the preparation of epoxy composite containing 30 vol.% Boehmeria nivea fabric by vacuum-assisted resin infusion molding technique and mechanical behavior characterization of the prepared composite. Obtained results are explained based on the fractography studies of tested samples.
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Pham, Döbrich, Trümper, Gereke, and Cherif. "Numerical Modelling of the Mechanical Behaviour of Biaxial Weft-Knitted Fabrics on Different Length Scales." Materials 12, no. 22 (November 8, 2019): 3693. http://dx.doi.org/10.3390/ma12223693.

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Weft-knitted fabrics offer an excellent formability into complex shapes for composite application. In biaxial weft-knitted fabric, additional yarns are inserted in the warp (wale-wise) and weft (course-wise) directions as a reinforcement. Due to these straight yarns, the mechanical properties of such fabrics are better than those of unreinforced weft-knitted fabrics. The forming process of flat fabrics into 3D preforms is challenging and requires numerical simulation. In this paper, the mechanical behavior of biaxial weft-knitted fabrics is simulated by means of macro- and meso-scale finite element method (FEM) models. The macro-scale modelling approach is based on a shell element formulation and offers reasonable computational costs but has some limitations by the description of fabric mechanical characteristics and forming behavior. The meso-scale modelling approach based on beam elements can describe the fabric’s mechanical and forming characteristics better at a higher computational cost. The FEM models were validated by comparing the results of various simulations with the equivalent experiments. With the help of the parametric models, the forming of biaxial weft-knitted fabrics into complex shapes can be simulated. These models help to predict material and process parameters for optimized forming conditions without the necessity of costly experimental trials.
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LEMMI, TSEGAYE SH, and MARCIN BARBURSKI. "THERMAL AGING EFFECT ON THE PHYSIO-MECHANICAL PROPERTIES OF TEXTILES USED FOR THE REINFORCEMENT OF CONVEYOR BELTS." Fibres and Textiles 30, no. 1 (2023): 105–9. http://dx.doi.org/10.15240/tul/008/2023-1-019.

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The use of textiles produced from high tenacity(HT) polyester yarns as a reinforcement material in the mechanical rubber goods industries, mainly in the conveyor belt, is extensively increasing due to their high tensile strength, flexibility, thermal stability, modulus of elasticity, and light weightiness. To achieve the desired property of a conveyor belt, the reinforcement components undergo various processing stages; among those stages vulcanizing the reinforcement materials under high temperatures is the crucial process that determines the physical and mechanical properties of the conveyor belt. The main aim of this work was to analyze the effect of vulcanization parameters on the physio-mechanical properties of high tenacity polyester yarns and fabrics that are utilized to reinforce a conveyor belt. An extensive experimental study was conducted on a pre-activated HT polyester yarn of different linear densities and woven fabrics produced for the purpose of conveyor belt reinforcement by subjecting the yarns and fabrics to various aging temperatures for a certain period of aging time. Following the experiments, a comprehensive study and analysis were conducted on the tensile property of the yarns and fabrics. The finding revealed that thermal aging has an immense impact on determining the tensile strength and elongation of the yarn and woven fabric, which also has a direct influence on the properties of the conveyor belt. The analysis of experimental test results of polyester yarns and woven fabrics revealed that vulcanizing textile-reinforced conveyor belt at high temperatures (220 °C) could deteriorate the tensile strength and increase the elongation at break of the yarn, fabric, or belt.
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El-Hage, Yue, Simon Hind, and François Robitaille. "Thermal conductivity of textile reinforcements for composites." Journal of Textiles and Fibrous Materials 1 (January 1, 2018): 251522111775115. http://dx.doi.org/10.1177/2515221117751154.

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Thermal conductivity data for dry carbon fibre fabrics are required for modelling heat transfer during composites manufacturing processes; however, very few published data are available. This article reports in-plane and through-thickness thermal conductivities measured as a function of fibre volume fraction ( Vf) for non-crimp and twill carbon reinforcement fabrics, three-dimensional weaves and reinforcement stacks assembled with one-sided carbon stitch. Composites made from these reinforcements and glass fibre fabrics are also measured. Clear trends are observed and the effects of Vf, de-bulking and vacuum are quantified along with orthotropy ratios. Limited differences between the conductivity of dry glass and carbon fibre fabrics in the through-thickness direction are reported. An unexpected trend in the relationship between that quantity and Vf is explained summarily through simple simulations.
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Bekisli, Burak, Johann Pancrace, and Herman F. Nied. "Mechanical Behavior of Highly-Flexible Elastomeric Composites with Knitted-Fabric Reinforcement." Key Engineering Materials 504-506 (February 2012): 1123–28. http://dx.doi.org/10.4028/www.scientific.net/kem.504-506.1123.

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This paper examines critical issues associated with the fabrication and forming of highly-flexible polymeric composites, reinforced with knitted-fabric structures. Knitted-fabric reinforcements have not generally been preferred over more traditional woven reinforcements in high-performance composites, mainly because of their lower stiffness/strength performance when embedded in a rigid, thermosetting matrix material. However, with their unique formability, knitted fabrics promise great potential in applications where large deformation of the structure is desirable; such as energy/impact absorption and forming applications. One very attractive feature of knitted composite materials, is the large displacements that the underlying knitted fabric can potentially undergo before exhibiting a significant increase in stiffness. The unusual extensional behavior of knit fabric is attributed to the fact that the fibers are more-or-less free to slide over each other before the yarns become highly oriented, eventually “locking” in a packed formation. When the loops become highly elongated, the knit fabric achieves its maximum resistance to in-plane deformation, and exhibits a stiffness closely related to the elastic stiffness of the straightened fiber/yarn bundles. The unique formability of knitted fabrics is mainly due to this yarn movement. The highly “stretchable” behavior of knitted textile reinforcement materials can be used to great advantage in thermoforming composite structures. In order to fully utilize the exceptional stretch properties of the knitted-fabric, the matrix material should be able to deform at least as much as the fabric, and the knitted yarn movements need to be restricted by the matrix as little as possible. In this study, a multi-level finite element procedure was developed to analyze and control the deformation characteristics of plain weft knit reinforced composites. A database of mechanical properties for various knit geometries was obtained. Using these results, it is shown that carefully “tailored” knit fabric reinforcement can be used to improve mechanical performance and facilitate polymer forming processes, such as thermoforming. In this study, elastomeric materials such as polyurea and thermoplastic elastomer (TPE) were used to fabricate composites with knitted-fabric. Two different types of arrangements were experimentally studied: knitted fabric embedded in the elastomer and a sandwich of knitted fabric between elastomeric skins. It is shown that by fully utilizing the high stretchability of the knitted fabric reinforcements, attractive material properties can be obtained especially for energy/impact absorption and forming applications. The improvement of thermoforming process stability with the use of carefully tailored knitted fabric reinforcements is also presented.
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Hasan, K. M. Faridul, Péter György Horváth, and Tibor Alpár. "Potential fabric-reinforced composites: a comprehensive review." Journal of Materials Science 56, no. 26 (May 26, 2021): 14381–415. http://dx.doi.org/10.1007/s10853-021-06177-6.

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AbstractFabric-based laminated composites are used considerably for multifaceted applications in the automotive, transportation, defense, and structural construction sectors. The fabrics used for composite materials production possess some outstanding features including being lighter weight, higher strength, and lower cost, which helps explain the rising interest in these fabrics among researchers. However, the fabrics used for laminations are of different types such as knit, woven, and nonwoven. Compared to knitted and nonwoven fabrics, woven fabrics are widely used reinforcement materials. Composites made from fabric depend on different properties such as fiber types, origin, compositions, and polymeric matrixes. Finite element analysis is also further facilitating the efficient prediction of final composite properties. As the fabric materials are widely available throughout the world, the production of laminated composites from different fabric is also feasible and cost-effective. This review discusses the fabrication, thermo-mechanical, and morphological performances of different woven, knit, and nonwoven fabric-based composites.
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Dissertations / Theses on the topic "Reinforcement fabrics"

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Peled, Alva, Zvi Cohen, Steffen Janetzko, and Thomas Gries. "Hybrid Fabrics as Cement Matrix Reinforcement." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-77694.

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Hybrid systems with two or more fiber materials were used to combine the benefits of each fiber into a single composite product. Strength and toughness optimization of hybrid thin sheet composites has been studied extensively using combination of different fiber types with low and high modulus of elasticity. Hybrid reinforcement is more significant when the reinforcing structure is in fabric geometry. Fabric structure provides full control on the exact location of each yarn and its orientation in the composite during production, thus maximizes the reinforcing efficiency. A high-strength, high-modulus fiber primarily tends to increase the composite strength with nominal improvements in toughness. A low-modulus fiber expected to mainly improve toughness and ductility. Combination of two or more types of fiber can produce a composite that is both strong and tough as compared to a mono fiber composite. The purpose of the current work was to study hybrid warp knitted fabrics as reinforcement for cementbased composite, having AR (Alkali Resistance) glass and Polypropylene (PP) as the reinforcing yarns. The examined ratios between the two different yarns were 0:100, 25:75, 50:50, 75:25, 100:0 (glass: PP, by percentage). It was found that in the hybrid system, the fracture mechanism is a superposition of the mono systems, and the tensile behavior is a combination between the two materials.
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Alami, Fikri. "CFRP fabrics as internal reinforcement in concrete beams." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/418337/.

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Georgallides, Christoforos. "Design production assessment of multilayer fabrics for composite materials reinforcement." Thesis, University of Manchester, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603311.

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The aim of this project was to design, produce and assess multilayer fabrics with crosslinks or stitches between the individual layers so that the interlaminar shear properties of the composite panels reinforced with these fabrics would be improved. In fact, 12 fabric variants based on a 2-layer a-end satin fabric (with a more number 3Up) were produced on a 4x1 SAURER 100W Shuttleloom, which was modified in order to weave these fabrics. 3-D cellulorr fabrics with novel triangular cores were also woven on this shuttleloom. All of the 2-layer a-end satin fabric variants (including one non-stitched (weave No.9); five weft stitched (weave No.s 32,33,19,34,25); three warp stitched (weave No.s 36,37,29) ; and four weft and warp stitched fabrics (weaves Nos. 35,38,39,40) were assessed for their mechanical performance, particularly in Tensile and Interlaminar shear deformations. A geometrical model, "MAMCA" ("Major and Minor Circular Arc") model, was proposed in order to describe the yarn paths (warp and weft) in all the above fabric variants. using this model ("MAMCA"), the average breaking load of warp and the maximum initial angle between the warp yarn and the fabric axis (ximax.warp)' the theoretical breaking load along the warp direction was estimated for all 13 fabric variants tested. The theoretical values of the breaking load of the above fabric variants in the warp direction, were compared to the Experimental values obtained from Tensile strip strength Tests. There was a reasonable degree of agreement between these two sets of breaking load values. Thus, this method could be used to predict the breaking load of such fabrics in the appropriate loading direction.
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BU, JLDAIN HAFETH. "Behaviour and Inspection of Novel Non-Crimp Dry Thick Reinforcement Fabrics." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32383.

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Aerospace structural components made from polymer matrix composites (PMCs) offer numerous advantages. Their high stiffness and high strength combined with low densities enable lower fuel consumption coupled with higher payloads. As a result, PMCs provide an important economic advantage over typical metallic airframes. Textile reinforcements for PMCs are made by assembling reinforcement fibres, typically carbon. Then, the textile reinforcements are typically cut into smaller pieces, stacked, draped and assembled into a dry assembly called a preform, the shape of which generally approaches that of the PMC part to be made. This manufacturing process is labour intensive and expensive. Novel thick, net-shape, drapable, high vf textile reinforcements used toward manufacturing aerospace PMCs are being developed at the University of Ottawa. The technology enables the manufacturing of flat, drapable multilayered near net-shape preforms. The bending and in-plane shear behaviours of such novel thick reinforcement textiles was investigated to understand and define the behaviour of such thick fabric reinforcements when formed into required shapes. A bending apparatus was developed for investigating the bending behaviour of these novel thick reinforcement fabrics and an articulated frame shear rig was used for investigating the in-plane shear behaviour. A non-destructive inspection method using infrared imaging was used for investigating and identifying flaws and defects in these thick, dry textile reinforcements, aiming at increasing the quality and reproducibility of the final PMC parts made from these reinforcements.
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Kostova, Kaloyana Zdravkova. "Design and constructability of fabric-formed concrete elements reinforced with FRP materials." Thesis, University of Bath, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.707574.

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Concrete has many advantages as a low cost and sustainable material. However, more than 5% of the planet’s total carbon emissions are associated with the production of cement, which, in fact, is predominantly due to the large volume of concrete used worldwide. It is known that traditionally designed concrete structures typically use more material than structurally required and, therefore, an important question is whether material demand can be reduced through structural optimisation. A major drawback from optimised design, however, is the cost and complexity of producing conventional rigid moulds. Fabric formwork is emerging as a new method for construction, gaining popularity among architects and engineers for the opportunity to build unique forms and to shape concrete elements efficiently. Porous fabrics, acting as controlled permeability formwork, also have proven effect on the durability characteristics of concrete. While fabric formwork has a profound potential to change the appearance of concrete structures, the shapes cast in fabrics are not defined in advance and have been often created unintentionally. The design of load-bearing reinforced concrete structures, however, requires accurate form-prediction and construction methods for securing steel reinforcement inside flexible fabrics, which presents a number of constructability challenges. For example, cover formers cannot be used to ensure adequate thickness of protective cover, inevitably affecting the acceptance of such structures in practice. This research has demonstrated that non-corrodable FRP reinforcement can be incorporated more easily than steel bars in fabric-formed concrete due to its light weight and flexibility, while it is possible to ensure ductility of such structures through confinement of concrete using FRP helices. A novel splayed anchorage system has been developed to provide end anchorage for optimised sections where standard bends or hooks cannot fit. This work also provides an experimentally verified methodology and guidance for the design and optimisation of fabric-formed elements.
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Li, Mengru. "Development and characterization of 3D warp interlock fabrics as reinforcements for protective solutions against stabbing." Thesis, Lille, 2021. http://www.theses.fr/2021LILUI010.

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Une demande croissante en matériaux utilisés pour la protection contre les coups de couteau a été formulée pour apporter plus de protection, flexibilité et légèreté. Les chercheurs se sont principalement concentrés sur les études relatives à la résistance aux coups de couteau des gilets pare-balles souples à base de fibres textiles et de tissus techniques 2D. Cependant, les matériaux de protection souples basés sur des tissus 3D ont rarement été étudiés dans les travaux de recherche récents, en particulier ceux qui révèlent que les architectures tissées en 3D peuvent jouer un rôle décisif lors d'un impact de couteau. Les tissus 3D interlock chaine (3DWIFs) peuvent également être utilisés dans un gilet souple pour des applications anti-poignard. L'objectif général de ces travaux de recherche actuels est d'explorer les différentes conceptions de tissus 3D interlock chaine (3DWIF) qui offrent la solution de protection la plus efficace. Par conséquent, cette thèse s'est concentrée sur les paramètres du processus de fabrication et les paramètres des produits résultants des tissus 3DWIF fabriqués avec des fils HMWPE. Les paramètres du processus de production ont été étudiés afin d'optimiser la fabrication et les propriétés mécaniques des tissus 3DWIF. Les paramètres produit des tissus 3D interlock chaine ont été étudiés afin de trouver la combinaison optimisée pour la meilleure résistance de protection contre les coups de couteau. Les quatre principales catégories d'architectures de tissus 3D interlock chaine, tels que : A/T, A/L, O/T et O/L, ont été tissées avec les mêmes fils retordus de polyéthylène à haut poids moléculaire (HMWPE). Les caractéristiques mécaniques des tissus 3D interlock chaine (3DWIF) ont été systématiquement testées et comparées. En outre, une étude expérimentale spécifique a été réalisée sur des tissus 3D interlock chaine soumis à un impact à faible vitesse, y compris les propriétés à simple et double passe en termes de profondeur de pénétration et de traumatisme. Les tests de double passage au couteau sont complémentaires des tests de simple passage au couteau. Il a été conclu expérimentalement que le tissu 3D interlock chaine de type orthogonal à liage à travers l'épaisseur a une bonne résistance aux coups de couteau. Entre-temps, les liens entre la résistance aux coups de couteau, les propriétés physiques et les propriétés mécaniques des 3DWIF ont été analysés
An increasing demand for materials used for stab protection has been expressed to provide more protective, flexibility and lightweight. Researchers have mainly focused on studies about stab resistance of soft body armour based upon technical textile fibres and 2D fabrics. However, the soft protective materials based on 3D fabrics have been rarely study in recent research works, especially those revealing that 3D woven architectures can play a decisive role during stab impact. 3D warp interlock fabrics (3DWIFs) can be used in a soft vest for anti-stab applications. The overall aim of this current research has been oriented to explore different design of 3DWIFs that provide the more efficient protective solution. Hence, this thesis has been concentrated on both the manufacturing process parameters and the resulted product parameters of the 3DWIFs made with HMWPE yarns. The production process parameters have been studied to optimize the manufacturing and the mechanical properties of 3DWIFs. The product parameters of 3DWIFs have been investigated to find the optimized combination for the best protective resistance against stabbing. The four main categories of 3D warp interlock fabrics architectures as : A/T, A/L, O/T, and O/L, were woven by twisted high molecular weight polyethylene (HMWPE) yarns. The mechanical characteristics of 3DWIFs were systematically tested and compared. Besides, a dedicated experimental study has been performed on 3DWIFs submitted to low-speed impact, including single-stab and double-stab properties in terms of depth of penetration and trauma. The double-pass stabbing tests are complementary to single-pass stabbing tests. It was experimentally concluded that the orthogonal/through-the-thickness interlock fabric has a good stab resistance. Meanwhile, the links among stab resistance, physical properties, and mechanical properties of 3DWIFs have been analysed
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Wu, Zijie. "Damage tolerance study of carbon fibre/RTM6 composites toughened with thermoplastic-coated fabric reinforcement." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/damage-tolerance-study-of-carbon-fibrertm6-composites-toughened-with-thermoplasticcoated-fabric-reinforcement(0a596f56-3143-4bf0-993f-34ee773518c9).html.

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RTM6 has for more than 20 years been the main commercial epoxy system for infusion processing qualified by the aerospace industry. In common with other aerospace-grade epoxy systems RTM6 is mechanically strong but brittle, producing carbon-fibre (CF) composites with relatively low impact resistance and damage tolerance. This thesis reports an approach to toughening epoxy-CF composites without modification of the resin. Thus, a T300 carbon fabric (ES-fabric) coated with 20 weight % of a poly (aryl ether ketone) (PAEK) was used to toughen the composite. The initial stage of the study was the manufacturing process. DSC and oscillatory-shear rheology were used to determine flow times and cure conditions, and to produce laminates with fibre volume fractions ≥55% a hybrid resin infusion/hot-press process was developed. Dynamic mechanical thermal analysis also showed that the PAEK coating produced relatively little plasticization of the epoxy matrix, with values of the matrix glass transition temperature shifting from 186±4.4 to 181± 1.4 ºC when using the ES-fabric. The main body of the study focussed on the toughening effect afforded by the PAEK coating relative to an uncoated fabric system as a reference. Mode I and Mode II interlaminar fracture toughness behaviour were studied using dual cantilever beam (DCB) and four-point end-notch flexure (4ENF) tests, respectively. The measured mode-I fracture energy, GIC, increased three-fold, from 216 ± 7.2 Jm-2 to 751 ± 105 Jm-2, due to the toughening effect of the PAEK coating; whereas the mode-II fracture energy, GIIC, increased almost four-fold from 857 ± 99 Jm-2 to 3316 ± 372 Jm-2. Damage resistance was studied using low-velocity impact testing and damage tolerance using a miniature compression-after-impact (CAI). A comparative study of damage tolerance was performed using open-hole compression (OHC) testing. The impact damage resistance significantly improved with the use of the PAEK-coated ES-fabric as well as the CAI and OHC behaviour. Impact testing showed the PAEK -toughened system exhibited higher energy abortion than the untoughened system, larger damage area was created in the T300/RTM6-2 after impacted with same energy. The CAI results indicated that the normalized CAI strength is major related that damage width rather than other factor. OHC results are predicted by using W-N criteria, for ES/RTM6-2: ASC a0 = 9.35 mm and PSC d0 = 2.72mm; whereas for T300/RTM6-2: ASC a0 = 7.95 mm and PSC d0 =2.43 mm, indicates that the compressive strength of T300/RTM6-2 is more sensitive to the size of the hole, thus ES/RTM6-2 perform better damage tolerance. The results from mechanical testing indicate that the PAEK coating toughened the composite system and significantly improved damage tolerance. Scanning electron microscopy indicated that these improvements in fracture behaviour were due to morphological changes induced by the PAEK coating in the matrix-CF interfacial region, where such changes can provide the maximum benefit. Small particles of RTM (approximately 1 µm in diameter) were observed imbedded within a continuous PAEK phase. Thus, during testing crack propagation was deflected (or bifurcated) by the RTM6 particles or stopped by shearing of the continuous PAEK phase of this multiphase region. This morphology is proposed to have formed in the interfacial region during processing by dissolution of the PAEK coating within the matrix resin system, followed by reaction-induced phase separation and then phase-inversion as the matrix cures.
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Billows, Trevor Norman Stanley. "Flexural strengthening of reinforced concrete beams with fabric reinforced cementitious mortar : effect of reinforcement ratios." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/60139.

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The current state of North America’s infrastructure system is in dire straits. The cost of repair is estimated at over $3.6 trillion in the United States alone. An innovative and cost-effective method of repair and retrofitting is vital to close what has been referred to as the infrastructure gap. As an alternative to the current methods, fabric reinforced cementitious mortar (FRCM) is proposed to aid the civil engineering industry in removing this gap. Applied to structural members externally, FRCM is characterized by its ability to strengthen and rehabilitate these structures. This study set out to determine the flexural strength improvement of reinforced concrete (RC) beams with different reinforcement ratios, textile layers, fabric materials and anchorage methods. Ten full-scale (200 x 300 x 4000mm) RC beams (2 controls, 8 strengthened) were cast and tested under monotonic four-point bending conditions. Ultimate flexural capacity, pseudo-ductility, energy absorption, stiffness, and failure mode were taken as performance indicators. Results showed all FRCM strengthened beams failed in a similar way to their control counterparts and FRCM did not affect the pre-yielding stiffness or ductility of the strengthened beams. However, FRCM significantly improved the beams’ yield load and flexural capacity over the control. Flexural strength improved by up to 81% over the control. Strength improved with an increase in textile layers, and U-shaped strengthened specimens outperformed their soffit-strengthened equivalents.
Applied Science, Faculty of
Engineering, School of (Okanagan)
Graduate
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9

Navidpour, Mansour. "Reinforced Concrete Shear Walls with Welded Wire Grids as Boundary Element Transverse Reinforcement." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37702.

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Reinforced concrete shear walls as seismic force resisting systems may experience inelastic deformations if subjected to strong seismic excitations. These walls are designed to provide strength, stiffness, energy dissipation capacity and lateral drift control for seismic resistance. Shear wall deformability is largely dependent on adequate confinement of core concrete in boundary elements, prevention of longitudinal bar buckling, as well as proper design and detailing of the web section. Conventional transverse reinforcement placed in shear wall boundary elements consists of hoops, overlapping hoops and crossties, based on the geometry and number of longitudinal bars used. The confinement steel requirement of current building codes (ACI 318 or CSA A23.3) often results in congestion of steel cage due to the high transverse reinforcement ratio required. Placing multiple hoops with 135-degree bends combined with crossties to satisfy the code confinement requirements can create concrete placement and construction problems. In addition, the required time to assemble conventional steel cages with multiple individual ties per spacing can be time consuming, potentially impacting the overall cost and duration of construction. Welded Wire Reinforcement (WWR) is available in the construction industry as concrete reinforcement in the form of welded wire fabric (WWF) manufactured from relatively small diameter wires in comparison to the bar sizes typically used in structural applications. As an alternative to using conventional transverse hoops, prefabricated WWR grids can be used to provide required transverse reinforcement in boundary elements. WWR grids are manufactured using robots to weld cut steel pieces accurately before they are shipped to the job site, resulting in better construction quality and reduced construction time. However, research on the use of WWR is limited in the literature. Further experimental and analytical research is needed to establish design requirements for such reinforcement, especially when used in earthquake resistant construction with requirements for ductile response. The current research project, involved three main phases; i) tests of 3 large-scale reinforced concrete shear walls with WWR grids used as boundary element transverse reinforcement, ii) material tests of grid samples, including those cast in concrete, iii) non-linear finite element analysis. The wall tests were conducted under slowly-applied lateral deformation reversals to investigate their strength and ductility for suitability as seismic resistant structural elements. Material tests were conducted to have a better understanding of WWR behavior, especially their weld capacity. Analytical research was undertaken to expand the experimental findings on shear wall behavior, as well as to conduct parametric investigation to understand the impact of changes in grid strength and ductility. The results indicated that WWR grids can be used as boundary element transverse reinforcement in earthquake resistant shear wall. However, strength and ductility of grids should be established carefully prior to such application. Design strength of WWR grids should be established through burst tests to ensure ductile yielding of wire reinforcement prior to premature weld failure. Those grids that exhibit weld failures may be used with reduced design strength to permit the development of sufficient inelastic deformability in flexure-dominant shear walls.
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10

Arab, Rabah. "Modélisation des massifs renforcés sollicités localement en tete." Grenoble 1, 1997. http://www.theses.fr/1997GRE10001.

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La technique de renforcement par geosynthetique est de part sa simplicite et son cout modere de mise en uvre, tres utilisee de part le monde et plus particulierement dans le domaine de la geotechnique et de l'environnement. L'extension de son domaine d'application aux murs de soutenement renforces et sollicites localement en tete par des surcharges (fonction porteuse) est a ce jour freinee par le manque d'ouvrages de reference et le peu de methodes de dimensionnement justifiees et validees. Pour apprehender les mecanismes de rupture et les comportements sous charges de service et a la rupture de ce type d'ouvrage, des essais en vraies grandeurs ont ete realises dans le cadre d'un projet (garden) regroupant plusieurs laboratoires. Une modelisation elements finis est proposee pour simuler le comportement des ouvrages renforces et la comparaison avec l'experimentation est riche d'enseignement. Deux logiciels de calcul ont ete utilises a titre de comparaison et de validation. En depit des differences entre les resultats theoriques et experimentaux, les mecanismes obtenus restent assez proches de ceux observes sur les deux massifs experimentaux. Une etude parametrique egalement effectuee, a permis de degager des remarques interessantes quant a la comprehension de certains comportements observes sur site
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Books on the topic "Reinforcement fabrics"

1

Georgallides, C. Design production assessment of multilayer fabrics forcompositematerials reinforcement. Manchester: UMIST, 1993.

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Tony, Hulett, and Concrete Society, eds. The structural use of steel fabric reinforcement in ground-supported concrete floors. Camberley: Concrete Society, 2004.

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Allison, R. E. Fabric reinforcement to prevent reflection cracking: SR-5, contract 0414, Cowlitz River to SR-506 I/C. [Olympia, Wash.]: Washington State Dept. of Transportation, Planning, Research and Public Transportation Division in cooperation with the U.S. Dept. of Transportation, Federal Highway Administration, 1989.

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Welded steel wire fabric for concrete reinforcement from Italy, Mexico, and Venezuela: Determinations of the Commission in investigations nos. 701-TA-261(A), 263(A), and 264(A) (preliminary) under the Tariff Act of 1930, together with the information obtained in the investigations : determinations of the Commission in investigations nos. 731-TA-289(A)-291(A) (preliminary) under the Tariff Act of 1930, together with the information obtained in the investigations. Washington, DC: U.S. International Trade Commission, 1986.

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Ghosh, Swapan Kumar. Technical Handbook on Bituminized Jute Paving Fabric: A Partial Substitute and Reinforcement of Bitumen Mastic. Woodhead Publishing India PVT. LTD, 2018.

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Technical Handbook on Bituminized Jute Paving Fabric: A Partial Substitute and Reinforcement of Bitumen Mastic. Taylor & Francis Group, 2016.

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Ghosh, Swapan Kumar. Technical Handbook on Bituminized Jute Paving Fabric: A Partial Substitute and Reinforcement of Bitumen Mastic. Woodhead Publishing India PVT. LTD, 2018.

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Ghosh, Swapan Kumar. Technical Handbook on Bituminized Jute Paving Fabric: A Partial Substitute and Reinforcement of Bitumen Mastic. Woodhead Publishing India PVT. LTD, 2016.

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Ghosh, Swapan Kumar. Technical Handbook on Bituminized Jute Paving Fabric: A Partial Substitute and Reinforcement of Bitumen Mastic. Woodhead Publishing India PVT. LTD, 2018.

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Ghosh, Swapan Kumar. Technical Handbook on Bituminized Jute Paving Fabric: A Partial Substitute and Reinforcement of Bitumen Mastic. Woodhead Publishing India PVT. LTD, 2018.

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Book chapters on the topic "Reinforcement fabrics"

1

Gooch, Jan W. "Reinforcement Fabrics." In Encyclopedic Dictionary of Polymers, 621. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9890.

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Gooch, Jan W. "Fabrics, Reinforcement." In Encyclopedic Dictionary of Polymers, 293. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_4744.

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Newton, Peter H. "Steel Fabric Reinforcement To BS 4483." In Structural Detailing, 154. London: Macmillan Education UK, 1985. http://dx.doi.org/10.1007/978-1-349-07253-8_20.

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Contamine, Raphaël, Amir Si Larbi, and Patrice Hamelin. "Matrix and Fabric Impregnation Influence on Textile Reinforcement Concrete Behaviour." In Advances in FRP Composites in Civil Engineering, 77–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17487-2_14.

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Monteiro, Sergio N., Frederico M. Margem, Glenio F. Daniel, Vinícius O. Barbosa, André R. Gomes, and Victor B. de Souza. "The Dimensional Characterization of Jute Fabric Strips for Reinforcement in Composite Polymeric." In Characterization of Minerals, Metals, and Materials 2017, 33–40. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51382-9_5.

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Sreekeshava, K. S., A. S. Arunkumar, and B. V. Ravishankar. "Experimental Studies on Brick Masonry Elements with Geo-fabric Bed Joint Reinforcement." In Advances in Sustainable Construction Materials, 33–41. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3361-7_3.

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Mahpour, Ali Rakhsh, Josep Claramunt, Mònica Ardanuy, and Joan Ramon Rosell. "Flax Fabric-Reinforcement Lime Composite as a Strengthening System for Masonry Materials: Study of Adhesion." In International RILEM Conference on Synergising Expertise towards Sustainability and Robustness of Cement-based Materials and Concrete Structures, 1297–306. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-33211-1_116.

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da Cruz Demosthenes, Luana Cristyne, Lucio Fabio Cassiano Nascimento, Michelle Souza Oliveira, Fabio da Costa Garcia Filho, Artur Camposo Pereira, Fernanda Santos da Luz, Édio Pereira Lima, Leandro Alberto da Cruz Demosthenes, and Sergio Neves Monteiro. "Evaluation of Buriti Fabric as Reinforcement of Polymeric Matrix Composite for Ballistic Application as Multilayered Armor System." In Green Materials Engineering, 177–83. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-10383-5_20.

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Bharath, K. N., S. Basavarajappa, S. Indran, and J. S. Binoj. "Effect of Surface Modification on Characteristics of Naturally Woven Coconut Leaf Sheath Fabric as Potential Reinforcement of Composites." In Biofibers and Biopolymers for Biocomposites, 285–94. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40301-0_14.

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"Reinforcement fabrics." In Encyclopedic Dictionary of Polymers, 828. New York, NY: Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-30160-0_9708.

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Conference papers on the topic "Reinforcement fabrics"

1

Hwang, Hyun-Sik, Brendan A. Patterson, Mohammad H. Malakooti, and Henry A. Sodano. "Modification of Pullout Behavior of Kevlar Fabric by Zinc Oxide Nanowire Reinforcement." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-66836.

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The future development of body armor is to develop a lightweight, and wearable garment system without a loss of ballistic impact resistance. High performance fabrics, such as Kevlar, have been utilized for body armor due to their high energy absorption and lightweight characteristics. However, additional reinforcement is necessary for Kevlar fabric to meet the protection requirements for body armor against typical ballistic threats. Thick layers of fabric or embedded ceramic plates have been used to meet these requirements at the expense of increased weight of the armor and reduced mobility of the user. Thus, much research has been conducted on this topic to increase the ballistic impact resistance of Kevlar fabrics, mainly focused on the understanding and modeling of ballistic impact behavior. Due to the significant effect of damage mechanisms on ballistic impact response, these mechanisms should vastly be studied to better understand the ballistic impact response of Kevlar. When a projectile impacts a woven fabric, the imparted energy is dissipated through several damage mechanisms including tow pullout, local tow failure at the point of impact, and remote tow failure. Among those mechanisms, tow pullout is especially critical in the case of a penetrator with a blunt face impacting a fabric with non-penetrating velocities and is strongly influenced by friction between tows. In this work, we employed a novel method to increase the friction between Kevlar tows by synthesizing zinc oxide nanowires onto the fabric surface. As a result, vertically-aligned zinc oxide nanowires were grown on the fabric surface and tailored to achieve an optimum ballistic performance response reaching an enhancement of up to 390% in tow pullout peak load compared to untreated fabrics. Additionally, the effect of various surface functionalization processes and nanowire morphology is investigated so that an optimum process is developed for an efficient ballistic performance response.
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Binetruy, Christophe, Sébastien Comas-Cardona, and Fan Zhang. "Identification and Modeling of Variability in Fabrics Used as Reinforcement in Polymer Composites: Influence on Transport and Mechanical Properties." In ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/esda2012-82581.

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Variability in fiber architecture and content introduces randomness in transport and mechanical properties of textile reinforcements and composites. Assessment of robustness of both manufacturing processes and composite parts require to link fabric variability to dominant properties. Irregular injection flow patterns or defects in the final products often occur due to the high variability in the fibrous media. Therefore, manufacturing robustness and part reliability have to be studied to avoid trial and error procedures. This study focuses on spatial variability in the fiber volume fraction and architecture and their influence on permeability of fiber reinforcements and mechanical performance of textile composite, relating these important properties to variation in reinforcement architecture. Methods to capture experimentally and model numerically the fabric randomness are presented and illustrated on typical non-woven fabrics. An efficient numerical approach is presented for the simulation of mold filling process with random fibrous permeability as input. Numerical examples for different injection schemes are presented to demonstrate the ability of the current approach in predicting the variability in mold filling results.
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Birsan, Iulian-Gabriel, Adrian Circiumaru, Vasile Bria, Igor Roman, and Victor Ungureanu. "Mechanical Characterization of Fiber Fabrics." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-25300.

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Fabric reinforced or textile composites are increasingly used in aerospace, automotive, naval and other applications. They are convenient material forms providing adequate stiffness and strength in many structures. In such applications they are subjected to three-dimensional states of stress coupled with hydro-thermal effects. Assuming that a composite material is a complex structure it is obvious that is hard to describe all its properties in terms of its parts properties. The properties of the composite depend not only on the properties of the components but on quality and nature of the interface between the components and its properties. As reinforcement two types of fiber fabric were used; first one is a simple type fabric of untwisted tows of carbon filaments while the second one is also simple type but as yarn and fill are used alternately untwisted tows of carbon and aramide filaments. There were some problems to be solved before molding: fabric stability during handling, cutting, imbuing the carbon and aramide tows are slipping one on each other leading to fabric defects; generally the epoxy systems do not adhere to the carbon fiber; in order to obtain a valuable material the nature of interface must be the same for polymer-carbon fiber and polymer aramide fiber. In order to solve these problems the two fabrics were covered (by spraying) with a thin film of PNB rubber. Into the rubber solution were also dispersed small amounts of clay (to create a better interface) and carbon black (to improve the electrical conductivity). The rubber presence solves the fabric stability problem; ensures the same type of interface between fibers and polymer matrix; ensures a more elastic interface between fibers and polymer matrix. This treatment induces modification on tensile behavior of fabrics. This study is about mechanical evaluation of such fabrics.
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Rakhsh Mahpour, Ali, Monica Ardanuy, Heura Ventura, Joan Ramon Rosell, and Josep Claramunt. "Rheology, Mechanical Performance and Penetrability through Flax Nonwoven Fabrics of Lime Pastes." In 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.480.

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The use of plant fibers as a reinforcement for fragile matrices could be an option to improve the sustainability of the construction materials. These reinforcements can be in different forms as short fibers, long fibers or woven or nonwoven fabrics. The mechanical performance of the composites is significantly related to the adhesion between the matrix and the fibers. In the case of nonwoven reinforcement, to get good adhesion, the penetration of the paste is a key point. That is why this study addresses the relationship between rheology, penetration through the nonwoven fabrics and the mechanical properties of various lime pastes with different contents of water and metakaolin (MK). The effect of the binder’s grinding is also evaluated. The results indicate that MK pastes with higher w/b ratios penetrate better into nonwovens, Grinding has a negative effect on penetrability despite improving the mechanical properties of the pastes.
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5

"Flexural Behavior of Masonry Walls Strengthened With Composite Fabrics." In SP-138: Fiber-Reinforced-Plastic Reinforcement for Concrete Structures - International Symposium. American Concrete Institute, 1993. http://dx.doi.org/10.14359/3936.

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LI, A., C. DIAGANA, Y. DELMAS, and B. GEDALIA. "SHEAR PERFORMANCE WITH EXTERNALLY BONDED CARBON FIBRE FABRICS." In Proceedings of the Sixth International Symposium on FRP Reinforcement for Concrete Structures (FRPRCS–6). World Scientific Publishing Company, 2003. http://dx.doi.org/10.1142/9789812704863_0046.

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"Tension and Compression Strengthening of RC Members by CFRP Composite Fabrics." In SP-275: Fiber-Reinforced Polymer Reinforcement for Concrete Structures 10th International Symposium. American Concrete Institute, 2011. http://dx.doi.org/10.14359/51682479.

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"Finite Element Modelling of RC Beams Retrofitted with CFRP Fabrics." In SP-230: 7th International Symposium on Fiber-Reinforced (FRP) Polymer Reinforcement for Concrete Structures. American Concrete Institute, 2005. http://dx.doi.org/10.14359/14850.

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9

Hamila, Nahiene, Philippe Boisse, and Sylvain Chatel. "Meso-Macro Simulations of Textile Composite Forming." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72382.

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Composite textile reinforcement draping simulations aid in determining the processing conditions for a quality part and in finding the positions of the fibers after forming. This last point is essential for the structural computations of the composite part and for resin injection analyses in the case of LCM processes. Because the textile composite reinforcements are multiscale materials, continuous (macro) approaches and discrete (meso) approaches that model the yarns have been developed. The finite element that is proposed in this paper for textile fabric forming is composed of woven unit cells. The mechanical behaviour of these is analyzed by 3D computations at the mesoscale. The warp and weft directions of the woven fabric can be in an arbitrary direction with respect to the direction of the element side. This is very important in the case of multi-ply deep drawing and when using remeshing. The element is efficient because it is close to the physics of the woven cell while avoiding the very large number of unknowns in the discrete approach. A set of validation tests and forming simulations on single-ply and multi-ply fabrics is presented and shows the efficiency of the approach.
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Demirci, Emrah, Memis¸ Acar, Behnam Pourdeyhimi, and Vadim V. Silberschmidt. "Anisotropic Elastic-Plastic Mechanical Properties of Thermally Bonded Bicomponent Fibre Nonwovens." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24664.

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Having a unique structure, nonwoven fabrics possess distinct mechanical properties dissimilar to those of woven fabrics and composites. Anisotropic elastic-plastic mechanical properties of core/sheath type thermally bonded bicomponent fibre nonwoven textiles are computed based on manufacturing parameters and fibre properties. Initially, tensile tests are performed on nonwoven fabrics and their single fibres to assess their mechanical behaviour and obtain input parameters for the developed algorithms. Random orientation of individual fibres is introduced into the model in terms of the orientation distribution function (ODF). An algorithm, based on the Hough transform, is developed to determine the ODF and calculate the structure’s anisotropy. The nonwoven fabric is modelled as an assembly of two regions — bond points and a fibre matrix, having distinct mechanical properties. Bond points are treated as a deformable bicomponent composite material composed of the sheath material of fibres as matrix reinforced with the core material as fibres with random orientation of reinforcement. On the other hand, the fibre matrix is treated as a composite membrane structure having low stiffness in thickness direction. A second algorithm is developed to calculate anisotropic material properties of these regions based on fibre characteristics and manufacturing parameters; it can be used in numerical modelling as well as product development and optimization of nonwovens.
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Reports on the topic "Reinforcement fabrics"

1

Wang, Youqi, and Xiaojiang J. Xin. Ballistic Strength of Multi-Layer Fabric System with Through-The-Thickness Reinforcement. Fort Belvoir, VA: Defense Technical Information Center, April 2013. http://dx.doi.org/10.21236/ada584508.

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Crameri, Sam, Filip Stojcevski, and Clara Usma-Mansfield. Effect of Fabric Reinforcement on the Flexural Properties of EPS-Core Surfboard Constructions. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317476.

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