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Journal articles on the topic 'Composites à fibres – Matériaux – Fatigue'

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Author: Grafiati

Published: 7 July 2024

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1

Bilba, Ketty, and Marie-Ange Arsène. "Etude de matériaux composites fibres de dictame/ciment." Revue des composites et des matériaux avancés 17, no. 3 (December 21, 2007): 327–50. http://dx.doi.org/10.3166/rcma.17.327-350.

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2

Bourmaud, Alain, Antoine Le Duigou, and Christophe Baley. "Recyclage des matériaux composites renforcés par des fibres végétales." Revue des composites et des matériaux avancés 20, no. 3 (December 31, 2010): 353–72. http://dx.doi.org/10.3166/rcma.20.353-372.

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3

Chahid, M., M. El Ghorba, M. Benhamou, and Z. Azari. "Optimisation fiabiliste de l'endommagement en fatigue d'un matériau composite fibres de verre-époxyde." Matériaux & Techniques 84, no. 11-12 (1996): 13–17. http://dx.doi.org/10.1051/mattech/199684110013.

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4

Koadri, Zainate, Azzedine Benyahia, Nadir Deghfel, Kamel Belmokre, Brahim Nouibat, and Ali Redjem. "Étude de l’effet du temps de traitement alcalin de fibres palmier sur le comportement mécanique des matériaux à base d’argile rouge de la région de M’sila." Matériaux & Techniques 107, no. 4 (2019): 404. http://dx.doi.org/10.1051/mattech/2019031.

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Ce travail s’inscrit dans le développement de matériaux locaux, telle que la fibre végétale (fibre de palmier) et l’argile rouge du sud Algérien, largement utilisées dans la préparation des briques, comme matériaux de construction rurale. Les fibres végétales possèdent des propriétés très intéressantes, elles sont : renouvelables, biodégradables et le rapport coût/légèreté faible. Leurs propriétés mécaniques sont très importantes. Cependant, le problème prédominant dans ce type de matériaux composites est la faible adhésion de l’interface matrice-fibre, attribuée probablement, à la nature de la surface et au caractère hydrophobe des fibres naturelles, conduisant ainsi, à des propriétés mécaniques faibles pour le composite envisagé. Le but de cette étude consiste à traiter la fibre de palmier par une solution basique d’hydroxyde de sodium (NaOH 4 % [m/v]) durant des périodes variables : 3, 7, 24 et 48 heures, afin d’améliorer l’adhésion interfaciale. Les résultats obtenus à partir des essais réalisés sur le composite renforcé par les fibres de palmier traitées durant 7 h ont montré une nette augmentation quant à la résistance, à la flexion et à la compression ; cette croissance est respectivement de l’ordre de 57 et 60 %, comparativement au composite renforcé par les fibres non traitées. On peut déduire que les fibres de palmier peuvent être considérées comme l’un des matériaux appropriés pour le renforcement de l’argile.

5

Bathias, C. "La fatigue des matériaux composites à hautes performances." Matériaux & Techniques 78, no. 5 (1990): 11–17. http://dx.doi.org/10.1051/mattech/199078050011.

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6

Juarez, Cesar, Gerardo Fajardo, and Pedro Valdez. "Caractérisation microstructurale des fibres naturelles pour des matériaux composites à base de ciment." Canadian Journal of Civil Engineering 36, no. 3 (March 2009): 449–62. http://dx.doi.org/10.1139/l09-009.

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Le comportement mécanique des bétons renforcés de fibres naturelles dépend principalement de l’adhérence entre la fibre et la matrice de ciment. Cette adhérence a aussi une certaine influence sur le type d’endommagement de ces matériaux. Cette recherche a été menée sur des fibres naturelles de lecheguilla (Agave lecheguilla). Des essais chimiques, physiques et mécaniques tels que la détermination de la composition chimique, la morphologie, la porosité, l’absorption d’eau et les résistances à la traction et à la flexion ont été réalisés en utilisant ces fibres naturelles. Des observations à l’interface fibre–matrice de ciment ont aussi été effectuées à l’aide du stéréoscope pour évaluer l’effet du milieu alcalin et de différents rapports eau/ciment (E/C) sur la performance de mortier fibré. On a constaté que la résistance mécanique à la traction et à la flexion du matériau composite augmente, d’une part, avec l’augmentation de la longueur et, d’autre part, avec la diminution du volume de fibres utilisé. Le principal type de défaillance observée est l’arrachement des fibres. De plus, l’adhérence entre les fibres et la matrice de ciment est modifiée par les changements volumétriques et l’absorption d’eau relativement élevée. Néanmoins, cette adhérence peut être substantiellement améliorée en faisant un traitement superficiel des fibres à l’aide de solutions chimiques, comme le xylène, et en utilisant des faibles rapports E/C.

7

Djoudi, Tarek, Mabrouk Hecini, Daniel Scida, Youcef Djebloun, and Belhi Guerira. "Caractérisation physique et mécanique du bois et des fibres issus d’une palme mûre de palmier dattier." Matériaux & Techniques 106, no. 4 (2018): 403. http://dx.doi.org/10.1051/mattech/2018056.

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La disponibilité en quantité importante des sous-produits renouvelable des palmiers dattiers laisse envisager leur utilisation comme renfort dans les matériaux composites et les structures d’isolation. Ceci nécessite la caractérisation physico-mécanique des différentes composantes du palmier. Dans ce contexte, cette étude a été entamée pour la caractérisation d’une composante importante du palmier qui est la palme mûre. La palme étant décomposée essentiellement en deux parties, le Pétiole et le Rachis, la caractérisation a été portée alors sur le bois fibreux et les fibres de ces deux parties. La caractérisation physique concernera la masse volumique des fibres et de la matrice végétale (lignine) ainsi que le taux d’humidité dans les différentes parties de la palme. Les essais mécaniques ont permis de déterminer les caractéristiques mécaniques du bois fibreux et des fibres extraites des deux parties de la palme après le séchage. À l’issue de cette étude, les résultats obtenus montrent l’influence de la position de l’échantillon testé sur les propriétés physico-mécaniques. Ils ont permis également de situer ce type de bois fibreux et ces fibres parmi d’autres résultats de la littérature scientifique et d’envisager de les utiliser dans la mise en œuvre des matériaux composites et dans des éléments d’isolation.

8

Nardin, Michel. "Interfaces fibre-matrice dans les matériaux composites. Applications aux fibres végétales." Revue des composites et des matériaux avancés 16, no. 1 (April 23, 2006): 49–62. http://dx.doi.org/10.3166/rcma.16.49-62.

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9

Redjel, Bachir. "La ténacité des matériaux composites a fibres courtes orientées au hasard." Matériaux & Techniques 79, no. 11 (1991): 21–27. http://dx.doi.org/10.1051/mattech/199179110021.

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10

Cheour, Khouloud, Mustapha Assarar, Daniel Scida, Rezak Ayad, and Xiao-Lu Gong. "Identification des coefficients d’amortissement de matériaux composites à fibres de lin." Revue des composites et des matériaux avancés 26, no. 3-4 (December 30, 2016): 367–82. http://dx.doi.org/10.3166/rcma.26.367-382.

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11

Kharrat, M., M. Salvia, A. Chateauminois, and L. Vincent. "Contribution à l’étude de la fatigue des matériaux composites SMC." Matériaux & Techniques 84, no. 3-4 (1996): 10–14. http://dx.doi.org/10.1051/mattech/199684030010.

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12

Gornet, Laurent, Romain Hamonou, Frédéric Jacquemin, Stéphane Auger, and Pierre Chalandon. "Détermination de la souplesse hors plan d’un assemblage de composites boulonnés à l’aide d’une démarche d’homogénéisation." Matériaux & Techniques 106, no. 3 (2018): 302. http://dx.doi.org/10.1051/mattech/2018052.

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Dans de nombreux secteurs industriels, les matériaux composites tissés à fibres de carbone et matrices thermoplastiques semblent être une alternative prometteuse aux matériaux métalliques pour alléger les structures. Les matrices composites thermoplastiques ont un coût plus adapté à la fabrication de pièces composites avec de grandes cadences. Les assemblages de structures peuvent être des jonctions mécaniques à base de rivets, de vis ou de boulons. Dans cette étude, nous proposons de développer une approche expérimentale et numérique pour identifier les souplesses hors plan des constituants élémentaires d’un assemblage boulonné. Il n’y a actuellement aucune règle de conception pour prédire la rupture des liaisons boulonnées constituées de substrats composites thermoplastiques. Par conséquent, une étude expérimentale d’une liaison boulonnée utilisant la technique de corrélation d’images est présentée. Simultanément, des modèles éléments finis tridimensionnels d’assemblages associés à une approche d’équivalence en énergie ont été développés afin de déterminer la souplesse des éléments de l’assemblage. Ces modèles éléments finis ont ensuite été comparés avec succès à des résultats expérimentaux.

13

Reis, Paulo N. B., José A. Martins Ferreira, Fernando Antunes, and José Domingos M. Costa. "Fatigue Notch Sensibility of Thermoplastic Glass Fibre Composites." Materials Science Forum 514-516 (May 2006): 653–56. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.653.

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This paper is concerned with a notch sensibility study of a thermoplastic composite produced from a bi-directional woven E-glass fibres and polypropylene. Experimental tests were performed in three points bending using notched and unotched specimens of polypropylene glass fibres reinforced laminates to evaluate flexural properties and fatigue behaviour. Fatigue results were plotted as the stress range against the number of cycles to failure. The fatigue damage was measured in terms of the stiffness loss. The testes carried out using notched specimens present lower values of both static and fatigue strengths than the unnotched specimens tests.

14

Karcagi, Rita, and János Lukács. "Fatigue Crack Growth Tests on Carbon Fibre Reinforced Aluminium Matrix Composites." Materials Science Forum 473-474 (January 2005): 111–16. http://dx.doi.org/10.4028/www.scientific.net/msf.473-474.111.

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Composite materials combine the advantages of their components. Carbon fibre reinforced composites are used in construction where reduced weight is critical. To produce carbon fibre reinforced composites, aluminium alloys can be the matrix. Advantageous properties of aluminium matrix composites – good toughness, low weight – are applied in aerospace and automotive industry. Because aluminium alloys are not reactive to carbon, therefore the coating of the fibres can solve the problem. Nickel coated and chemically treated carbon fibres were used to producing of aluminium matrix composites. The investigated composite materials were prepared by pressure infiltration. The influence of treating of carbon fibres was examined on the fracture mechanical properties of aluminium matrix composites. Three types of matrix materials, three types of carbon fibres and four types of surface treatment were studied. Fatigue crack growth tests were performed under mode I loading condition and the failure mechanisms of the composite materials were investigated. Test results belonging to different coated fibres were compared, and our results were compared with the results from the literature, too.

15

Grohens, Yves, Claude Charreteur, Jérémie Goimard, and Christophe Baley. "Influence des intrants agricoles sur l'écobilan des fibres de lin, renforts de matériaux composites." Revue des composites et des matériaux avancés 18, no. 2 (August 31, 2008): 245–50. http://dx.doi.org/10.3166/rcma.18.245-250.

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16

Karama, Moussa, Lofti Toubal, and Bernard Lorrain. "Détermination d'un critère de fatigue par thermographie infrarouge pour les matériaux composites." Revue des composites et des matériaux avancés 17, no. 2 (May 25, 2007): 195–206. http://dx.doi.org/10.3166/rcma.17.195-206.

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17

Piggott, M. R., and D. Loken. "Mesostructures and the Tensile Strength and Fatigue Endurance of Aligned Fibre Composites." Engineering Plastics 1, no. 4 (January 1993): 147823919300100. http://dx.doi.org/10.1177/147823919300100402.

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Mesostructures are structures which are middle rank in size, and usually unintentional. They provide a direct link between production processing and final properties of a composite. In this study an orientation mesostructure, i.e. fibre waviness, was artificially introduced into aligned carbon fibre composites using optical fibres (80–250 μm in diameter) oriented at right angles to the carbon. Although this caused severe curvature of the fibres, it was over very short lengths (a few microns) and appeared not to be the cause of the reduction in tensile strength of these composites. Instead it was concluded that the fibre crowding effect in the cross section of the optical fibre caused fibre contacts, and hence fibre damage, which weakened the composite. The tensile strengths of the composites without the optical fibres were higher than values quoted by the manufacturers, but were still less than theoretical values, probably due to stress concentrations in the end tabs. Better tensile testing methods therefore appear to be needed before embarking on a more detailed examination of the effect of mesostructures on tensile strength of unidirectional composites. Fibre waviness has also been suggested as a possible initiator of damage during the fatigue of aligned fibre composites. In this work, the presence of the optical fibres induced “ply cutting”. This could have resulted from the fibres in the regions of high fibre volume fraction rubbing against each other. The largest optical fibre caused, in addition, massive splitting of the specimen, in agreement with a mechanism previously proposed for the early stages of fatigue failure of these composites.

18

Piggott, M. R., and D. Loken. "Mesostructures and the Tensile Strength and Fatigue Endurance of Aligned Fibre Composites." Polymers and Polymer Composites 1, no. 4 (January 1993): 253–60. http://dx.doi.org/10.1177/096739119300100402.

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Abstract:

Mesostructures are structures which are middle rank in size, and usually unintentional. They provide a direct link between production processing and final properties of a composite. In this study an orientation mesostructure, i.e. fibre waviness, was artificially introduced into aligned carbon fibre composites using optical fibres (80–250 μm in diameter) oriented at right angles to the carbon. Although this caused severe curvature of the fibres, it was over very short lengths (a few microns) and appeared not to be the cause of the reduction in tensile strength of these composites. Instead it was concluded that the fibre crowding effect in the cross section of the optical fibre caused fibre contacts, and hence fibre damage, which weakened the composite. The tensile strengths of the composites without the optical fibres were higher than values quoted by the manufacturers, but were still less than theoretical values, probably due to stress concentrations in the end tabs. Better tensile testing methods therefore appear to be needed before embarking on a more detailed examination of the effect of mesostructures on tensile strength of unidirectional composites. Fibre waviness has also been suggested as a possible initiator of damage during the fatigue of aligned fibre composites. In this work, the presence of the optical fibres induced “ply cutting”. This could have resulted from the fibres in the regions of high fibre volume fraction rubbing against each other. The largest optical fibre caused, in addition, massive splitting of the specimen, in agreement with a mechanism previously proposed for the early stages of fatigue failure of these composites.

19

Serifou, Mamery Adama, Obre Sery Paul Jolissaint, Bleh Raoul Kouassi, and Emeruwa Edjikémé. "Analyse physico-mécanique d’un composite paille de riz/ciment." Matériaux & Techniques 108, no. 2 (2020): 208. http://dx.doi.org/10.1051/mattech/2020024.

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En raison des nombreux avantages qu’offrent les fibres végétales, elles sont de plus en plus utilisées pour la production de matériaux composites notamment dans le domaine de la construction. Le riz est la céréale la plus consommée dans le monde pour l’alimentation humaine. Sa production engendre des quantités importantes de paille qui sont peu ou pas valorisées d’où le besoin d’en faire un renfort dans les matériaux cimentaires. À travers cette étude, des composites de pailles de riz (PDR) / ciment ont été élaborés avec différentes teneurs en paille. Des essais mécaniques et physiques ont été réalisés à différents âges pour en évaluer les performances. Il en ressort que l’incorporation de 1 à 5 % de PDR induit une réduction des propriétés physiques et mécaniques des composites et provoquent un retard de prise du ciment. Cela a pour cause la grande absorption d’eau des pailles et leur faible adhésion avec la matrice cimentaire. Par ailleurs on assiste à l’allègement des composites grâce à l’introduction d’air occlus. Cette étude constitue la première étape de toute une série. Elle a permis de comprendre le comportement des PDR vis-à-vis du ciment. Les perspectives visent l’optimisation des propriétés mécaniques et physiques du matériau à travers l’incorporation de granulats.

20

Bedi, Raman, S. P. Singh, and Rakesh Chandra. "Flexural Fatigue-Life Assessment and Strength Prediction of Glass Fibre Reinforced Polymer Concrete Composites." ISRN Materials Science 2014 (March 27, 2014): 1–8. http://dx.doi.org/10.1155/2014/928278.

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The paper presents the results of an investigation conducted to assess the fatigue-life and prediction of flexural fatigue strength of polymer concrete composites based on epoxy resin as binder material. Three point flexural fatigue tests were conducted on polymer concrete specimens using MTS servo controlled actuator, to obtain the fatigue lives of the composites at different stress levels. One hundred and thirty-seven specimens of size 40×40×160 mm were tested in flexural fatigue. Forty-three static flexural tests were also conducted to facilitate fatigue testing. It has been observed that the probabilistic distribution of fatigue-life of polymer concrete composite (PCC) and glass fibre reinforced polymer concrete composite (GFRPCC), at a particular stress level, approximately follows the two-parameter Weibull distribution, with statistical corelation coefficient values exceeding 0.90. The fatigue strength prediction model, representing S-N relationship, has been examined and the material coefficients have been obtained for GFRPCC containing 0.5% and 1.0% glass fibres. Design fatigue lives for GFRPCC containing different contents of glass fibres have been estimated for acceptable probabilities of failure and compared with those of PCC.

21

Bollet, F., C. Galiotis, and M. J. Reece. "Determination of Stress Distribution in Fibre Bridged Cracks in Ceramic Matrix Composites." Advanced Composites Letters 3, no. 4 (July 1994): 096369359400300. http://dx.doi.org/10.1177/096369359400300402.

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Laser Raman Spectroscopy is being used to characterise interfacial properties and stress concentration in bridging fibres of a glass ceramic matrix composite. The preliminary results show that the stress distribution along fibres can be mapped. This technique will therefore assist the understanding of the fracture and fatigue behaviour of these materials.

22

Balakrishnan, Thinesh Sharma, Mohamed Thariq Hameed Sultan, Farah Syazwani Shahar, Adi Azriff Basri, Ain Umaira Md Shah, Tamer Ali Sebaey, Andrzej Łukaszewicz, Jerzy Józwik, and Rafał Grzejda. "Fatigue and Impact Properties of Kenaf/Glass-Reinforced Hybrid Pultruded Composites for Structural Applications." Materials 17, no. 2 (January 7, 2024): 302. http://dx.doi.org/10.3390/ma17020302.

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To address the weight, cost, and sustainability associated with fibreglass application in structural composites, plant fibres serve as an alternative to reduce and replace the usage of glass fibres. However, there remains a gap in the comprehensive research on plant fibre composites, particularly in their durability for viable structural applications. This research investigates the fatigue and impact properties of pultruded kenaf/glass-reinforced hybrid polyester composites tailored for structural applications. Utilising kenaf fibres in mat form, unidirectional E-glass fibre direct roving yarns, and unsaturated polyester resin as key constituents, pultruded kenaf/glass hybrid profiles were fabricated. The study reveals that pultruded WK/UG alternate specimens exhibit commendable fatigue properties (18,630 cycles at 60% ultimate tensile strength, UTS) and fracture energy (261.3 kJ/m2), showcasing promise for moderate load structural applications. Notably, the pultruded 3 WK/UG/3WK variant emerges as a viable contender for low-load structural tasks recorded satisfactory fatigue properties (10,730 cycles at 60% UTS) and fracture energy (167.09 kJ/m2). Fatigue failure modes indicate that the stress applied is evenly distributed. Ductile failures and delaminations during impact test can be attributed to damping and energy absorbing properties of kenaf fibres. Moreover, incorporating kenaf as a hybrid alternative demonstrates substantial reductions in cost (35.7–50%) and weight (9.6–19.1%). This research establishes a foundation for advancing sustainable and efficient structural materials and highlights the significant role of materials design in shaping the future of engineering applications.

23

Seitl, Stanislav, Zbyněk Keršner, Vlastimil Bílek, and Zdeněk Knésl. "Fatigue Parameters of Cement-Based Composites with Various Types of Fibres." Key Engineering Materials 417-418 (October 2009): 129–32. http://dx.doi.org/10.4028/www.scientific.net/kem.417-418.129.

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The paper introduces the basic fracture mechanics parameters of advanced building material – cement-based composites with various types of fibres, prepared as high performance concrete/mortar developed by ZPSV, a.s. company for production of thin-walled panels/elements. To this end three-point bend specimens with starting notch were prepared and tested under static (load–deflection diagram, effective fracture toughness) and cyclic loading (fatigue parameter – Wöhler curve). The experimentally obtained results of cement-based composites are compared and the suitability of these types composites for its application are discussed.

24

Fantozzi, Gilbert, Pascal Reynaud, and Dominique Rouby. "Fatigue Behaviour of Structural Ceramic Composites." Advances in Science and Technology 45 (October 2006): 1664–73. http://dx.doi.org/10.4028/www.scientific.net/ast.45.1664.

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Non-oxide composites are interesting materials for long term applications at high temperature under oxidizing atmosphere. To improve their lifetime, self-healing [Si-B-C] matrix has been developed recently. On this new generation of composite, fatigue has been studied at high temperature (up to 1200°C) in air. For the SiCf/[Si-B-C] composite, lifetime at 600°C is higher than 1000 h for a tension/compression cyclic loading of -50/+170 MPa. Nevertheless, the mechanical behaviour during the cyclic fatigue test is different at 600°C from that at 1200°C. Contrarily to 1200°C, at 600°C no specific evolution of the classical parameters used to characterize the mechanical behaviour during fatigue allows us to estimate the approach to fracture,. This indicates that the fatigue phenomena involved at 600°C are different from those involved at 1200°C. At 600°C, lifetime is mainly controlled by slow-crack-growth in the fibres in presence of air, and at 1200°C lifetime is controlled by fibre creep and oxidation.

25

Saouab, Abdelghani, Qianqian Chen, Philippe Boisse, Chung Hae Park, and Joël Bréard. "Simulation de la mise en forme des matériaux composites à fibres continues et à matrice thermoplastique." Revue des composites et des matériaux avancés 21, no. 3 (December 31, 2011): 271–92. http://dx.doi.org/10.3166/rcma.21.271-292.

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26

Tancrez, Jean-Pierre, François Rietsch, and José Pabiot. "Caractérisation des longueurs de fibres dans différents types de composites polypropylène-fibres de verre courtes—2éme partie. Etude des matériaux après injection." European Polymer Journal 30, no. 12 (December 1994): 1479–87. http://dx.doi.org/10.1016/0014-3057(94)90282-8.

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27

Ihamouchen, Chadia, Hocine Djidjelli, Amar Boukerrou, Françoise Fenouillot, and Clair Barres. "Comportement mécanique et propriétés thermique des composites polyéthyènes renforcés par des fibres lignocellolusiques." Matériaux & Techniques 106, no. 6 (2018): 601. http://dx.doi.org/10.1051/mattech/2018064.

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Un intéret particulier a été porté au grignons dʼolive, qui est un sous produit des rejets des différentes huileries. Chaque année, des milliers de tonnes de ce produit sont incinérés ou carrément rejetés dans la nature. Ce dernier, dont les caractéristiques restent à valoriser, est mis à profit par son incorporation comme charge dans lʼélaboration des matériaux composites à matrice polyéthylène haute densité (PEHD). Pour réduire le caractère hydrophile de la farine, un agent compatibilisant (polyéthylène greffé anhydride maléique) commercialisé sous le nom XA255 a été utilisé. Les échantillons obtenus par extrusion et injection seront ensuite caractérisés par différentes techniques dʼanalyse à savoir, le test de traction, lʼanalyse thermogravimétrique (ATG/DTG), lʼanalyse enthalpique différentielle (DSC) et lʼanalyse microscopique électronique à balayage (MEB). Avec lʼincorporation de la farine de grignon dʼolive (FGO) dans la matrice PEHD, la contrainte à la rupture diminue, tandis que la rigidité du matériau et le taux de cristallinité augmentent. Après traitement, on enregistre une amélioration, à la fois de la contrainte à la rupture et du module de Young, due principalement à une meilleure adhésion fibre/matrice, confirmée par lʼanalyse MEB. Lʼanalyse thermogravimétrique a montré une meilleure stabilité thermique des formulations F30 traitée, qui se manifeste par la diminution de la vitesse maximale de décomposition.

28

Jacquesson, M., M. H. VidalSétif, R. Valle, N. Godin, A. Girard, and R. Fougères. "Fatigue behaviour of aluminium matrix composites reinforced with continuous alumina fibres." Materials Science and Technology 16, no. 7-8 (July 2000): 830–36. http://dx.doi.org/10.1179/026708300101508513.

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29

Mir, A., C. Aribi, and B. Bezzazi. "Fatigue Behaviour of the Laminates Jute/Epoxy." Advanced Materials Research 682 (April 2013): 65–71. http://dx.doi.org/10.4028/www.scientific.net/amr.682.65.

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Work presented is interested in the characterization of the quasistatic mechanical properties and in fatigue of a composite laminated in jute/epoxy. The natural fibres offer promising prospects thanks to their interesting specific properties, because of their low density, but also with their bio deterioration. Several scientific studies highlighted the good mechanical resistance of the vegetable fibre composites reinforced, even after several recycling. Because of the environmental standards which become increasingly severe, one attends the emergence of eco-materials at the base of natural fibres such as flax, bamboo, hemp, sisal, jute. The fatigue tests on elementary vegetable fibres show an increase of about 60% of the rigidity of elementary fibres of hemp subjected to cyclic loadings. In this study, the test-tubes manufactured by the method infusion have sequences of stacking of 0/90° and ± 45° for the shearing and tensile tests. The quasistatic tests reveal a variability of the mechanical properties of about 8%. The tensile fatigue tests were carried out for levels of constraints equivalent to half of the ultimate values of the composite. Once the fatigue tests carried out for well defined values of cycles, a series of static tests of traction type highlights the influence of the number of cycles on the quasi static mechanical behavior of the laminate jute/epoxy.

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Fiore, L., P. Frangville, and L. Vincent. "Mise au point d’un essai de fatigue en flexion pour la caractérisation de matériaux composites." Matériaux & Techniques 74, no. 3-4 (1986): 71–72. http://dx.doi.org/10.1051/mattech/198674030071.

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Gao, Xingzhong, Muhammad Umair, Yasir Nawab, Zeeshan Latif, Sheraz Ahmad, Amna Siddique, and Hongyue Yang. "Mode I Fatigue of Fibre Reinforced Polymeric Composites: A Review." Polymers 14, no. 21 (October 27, 2022): 4558. http://dx.doi.org/10.3390/polym14214558.

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Composites are macroscopic combinations of chemically dissimilar materials preferred for new high-tech applications where mechanical performance is an area of interest. Mechanical apprehensions chiefly include tensile, creep, and fatigue loadings; each loading comprises different modes. Fatigue is cyclic loading correlated with stress amplitude and the number of cycles while defining the performance of a material. Composite materials are subject to various modes of fatigue loading during service life. Such loadings cause micro invisible to severe visible damage affecting the material’s performance. Mode I fatigue crack propagates via opening lamina governing a visible tear. Recently, there has been an increasing concern about finding new ways to reduce delamination failure, a life-reducing aspect of composites. This review focuses on mode I fatigue behaviours of various preforms and factors determining failures considering different reinforcements with respect to fibres and matrix failures. Numerical modelling methods for life prediction of composites while subjected to fatigue loading are reviewed. Testing techniques used to verify the fatigue performance of composite under mode I load are also given. Approaches for composites’ life enhancement against mode I fatigue loading have also been summarized, which could aid in developing a well-rounded understanding of mode I fatigue behaviours of composites and thus help engineers to design composites with higher interlaminar strength.

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Tsai, Shang-Nan, Declan Carolan, Stephan Sprenger, and Ambrose C. Taylor. "Fracture and fatigue behaviour of carbon fibre composites with nanoparticle-sized fibres." Composite Structures 217 (June 2019): 143–49. http://dx.doi.org/10.1016/j.compstruct.2019.03.015.

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Helaly, F. M., S. H. El-Sabbagh, and L. Abd El-latif. "Evaluation of the Mechanical and Ultrasonic Properties of Butadiene-Acrylonitrile Rubber Containing Short Aramid Fibres." Polymers and Polymer Composites 13, no. 3 (March 2005): 281–99. http://dx.doi.org/10.1177/096739110501300308.

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Short aramid fibres were incorporated into butadiene-acrylonitrile copolymer rubber (NBR). An adhesion system (hydrated silica, resorcinol and hexamethylene tetramine) (HRH) was used to strengthen the bond between the rubber and the fibres. The rheological, tensile, ultrasonic properties and the hardness were determined by standard test methods. The properties of the composites improved as the fibre content increased up to 30 phr by weight. Longitudinal and transverse ultrasonic velocities were used to calculate the elastic parameters of the composites. Ultrasonic results were then used to assess the bonding between the fibres and the rubber matrix as well as the sound absorptive potential of the composites. Scanning electron microscopy (SEM) demonstrated that the fibre distribution in the rubber was satisfactory. Regression analysis was used to clarify the correlation between the longitudinal tensile strength and ageing time. The strain energy increased with fibre content while the fatigue life decreased.

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Pegoretti, Alessandro, and Theonis Riccò. "Fatigue crack propagation in polypropylene reinforced with short glass fibres." Composites Science and Technology 59, no. 7 (May 1999): 1055–62. http://dx.doi.org/10.1016/s0266-3538(98)00143-2.

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Nadia, Kassim, Mohamad Ridzwan Ishak, and S. Misri. "Kenaf Fibre: Its Potential and Review on Bending Fatigue of Hollow Shaft Composites." Applied Mechanics and Materials 629 (October 2014): 395–98. http://dx.doi.org/10.4028/www.scientific.net/amm.629.395.

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The fast growing use of composite in many applications has been focused on sustainable and renewable reinforced composites. Natural fibres were introduced and increasingly used due to their availability and environmental issues. Kenaf is the most common natural fiber used as reinforcement in polymer matrix composites (PMC). Therefore, this study analyzes the bending fatigue for kenaf fiber hollow shaft composite. The wet filament winding technique was used to prepare the composite specimens for the bending fatigue test. Different orientation angles (45° and 90°) and reinforced with aluminum were studied.

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Foti, Federico, Yannick Pannier, Marco Gigliotti, Marie Christine Lafarie-Frenot, David Mellier, and Thach Can Luu. "Fatigue multi-physique de matériaux composites à matrice organique stratifiés croisés [0/90]spour applications aéronautiques." Matériaux & Techniques 104, no. 4 (2016): 406. http://dx.doi.org/10.1051/mattech/2016019.

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Tolêdo Filho, Romildo Dias, Kuruvilla Joseph, Khosrow Ghavami, and George Leslie England. "THE USE OF SISAL FIBRE AS REINFORCEMENT IN CEMENT BASED COMPOSITES." Revista Brasileira de Engenharia Agrícola e Ambiental 3, no. 2 (August 1999): 245–56. http://dx.doi.org/10.1590/1807-1929/agriambi.v3n2p245-256.

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ABSTRACT The inclusion of fibre reinforcement in concrete, mortar and cement paste can enhance many of the engineering properties of the basic materials, such as fracture toughness, flexural strength and resistance to fatigue, impact, thermal shock and spalling. In recent years, a great deal of interest has been created worldwide on the potential applications of natural fibre reinforced, cement based composites. Investigations have been carried out in many countries on various mechanical properties, physical performance and durability of cement based matrices reinforced with naturally occurring fibres including sisal, coconut, jute, bamboo and wood fibres. These fibres have always been considered promising as reinforcement of cement based matrices because of their availability, low cost and low consumption of energy. In this review, the general properties of the composites are described in relation to fibre content, length, strength and stiffness. A chronological development of sisal fibre reinforced, cement based matrices is reported and experimental data are provided to illustrate the performance of sisal fibre reinforced cement composites. A brief description on the use of these composite materials as building products has been included. The influence of sisal fibres on the development of plastic shrinkage in the pre-hardened state, on tensile, compressive and bending strength in the hardened state of mortar mixes is discussed. Creep and drying shrinkage of the composites and the durability of natural fibres in cement based matrices are of particular interest and are also highlighted. The results show that the composites reinforced with sisal fibres are reliable materials to be used in practice for the production of structural elements to be used in rural and civil construction. This material could be a substitute asbestos-cement composite, which is a serious hazard to human and animal health and is prohibited in industrialized countries. The production of sisal fibres as compared with synthetic fibres or even with mineral asbestos fibres needs much less energy in addition to the ecological, social and economical benefits.

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Plumtree, A., and G. Shen. "Prediction of Fatigue Damage Development in Undirectional Long fibre Composites." Engineering Plastics 2, no. 2 (January 1994): 147823919400200. http://dx.doi.org/10.1177/147823919400200202.

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Cyclic damage development in polymer matrix composites reinforced with long fibres may be modelled by a two stage process. The first stage involves transverse and shear cracking of the matrix which is particularly significant in cross-ply laminates. Its development may be described using a two-parameter Weibull model. The damage rate continuously decreases until saturation is reached. This stage also occurs in unidirectional glass’ polyester rods pultruded under industrial conditions. The second stage exhibits an increasing rate of damage development resulting from longitudinal splitting, delamination, fibre pull-out and fracture. This may be described by applying continuum damage mechanics. The summation of the two expressions results in a comprehensive description of the fatigue damage evolution process. Using this approach it is possible to predict complete damage accumulation in undirectional long fibre composites.

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Plumtree, A., and G. Shen. "Prediction of Fatigue Damage Development in Undirectional Long fibre Composites." Polymers and Polymer Composites 2, no. 2 (February 1994): 83–90. http://dx.doi.org/10.1177/096739119400200202.

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Cyclic damage development in polymer matrix composites reinforced with long fibres may be modelled by a two stage process. The first stage involves transverse and shear cracking of the matrix which is particularly significant in cross-ply laminates. Its development may be described using a two-parameter Weibull model. The damage rate continuously decreases until saturation is reached. This stage also occurs in unidirectional glass’ polyester rods pultruded under industrial conditions. The second stage exhibits an increasing rate of damage development resulting from longitudinal splitting, delamination, fibre pull-out and fracture. This may be described by applying continuum damage mechanics. The summation of the two expressions results in a comprehensive description of the fatigue damage evolution process. Using this approach it is possible to predict complete damage accumulation in undirectional long fibre composites.

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Bertrand, S., F. Germain, R. Pailler, and J. Lamon. "Thermomechanical Behaviour of 2D-SiC/Sic Composites with Nanoscale-Multilayered (PyC/SiC)n Interphases." Advanced Composites Letters 8, no. 6 (November 1999): 096369359900800. http://dx.doi.org/10.1177/096369359900800606.

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2D woven SiC/SiC composites, with nanoscale-multilayered (PyC/SiC)n interphases, have been made via chemical vapour infiltration of a preform of either Nicalon or Hi-Nicalon fibres. The nanoscale-multilayered (PyC/SiC)n interphases consist of n successive PyC-SiC sequences. In the present paper n = 10 and the thickness of the PyC and SiC sublayers was about 20 nm and 50 nm respectively. The influence of Hi-Nicalon fibres and multilayered interphases on the mechanical behaviour at room temperature and the lifetime in cyclic fatigue at 600°C and 1200°C was investigated. The Hi-Nicalon fibre and the multilayered interphases are shown to lead to improved 2D-SiC/SiC composites.

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Fournier, P., Ph Reynaud, F. Platon, and J. Absi. "Tribological behaviour of carbon-fibre-reinforced SiC matrix composites." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 214, no. 3 (March 1, 2000): 291–306. http://dx.doi.org/10.1243/1350650001543188.

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Reinforcement of monolithic ceramics by carbon fibres improves the tribological behaviour of ceramic materials. The lamellar graphite of carbon fibres can act as a natural third body, leading to low friction. The tribological behaviour of carbon-fibre (M40)-reinforced SiC matrix composites under different experimental conditions (velocity, load and temperature) is discussed in this paper. C-SiC composites are tested in sliding contact using a disc-on-disc tribometer. The results show that the behaviour of the contact is highly dependent on friction conditions. Friction transitions can occur during tests. The purpose of this paper is to identify the mechanisms which lead to these transitions. The main hypothesis concerns the mechanical and thermal fatigue phenomena. Under restrictive experimental conditions the C-SiC composites can be considered as self-lubricating materials. Self-lubricating conditions are experimentally given by a curve according to test temperature and pv parameter.

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Carvelli, Valter, Toru Fujii, and Kazuya Okubo. "The effect of microfibrils cellulose modified epoxy on the quasi-static and fatigue behaviour of open hole carbon textile composites." Journal of Composite Materials 52, no. 24 (March 19, 2018): 3365–80. http://dx.doi.org/10.1177/0021998318765623.

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The extensive experimental investigation aimed to assess the effects of hybrid epoxy resin with micro-fibrillated cellulose on tensile quasi-static and fatigue behaviour of open hole carbon plain weave composites. The hybridization of the matrix allowed an improved damage tolerance of the composite leading to increase of the quasi-static tensile strength and extension of the fatigue life. The enhanced mechanical performance of the notched composites was connected to the bridging effect of cellulose microfibrils preventing or delaying the cracks propagation in the matrix and along the fibres interface. The better distribution of the stress state was assessed by digital image correlation strain maps around the hole and the imparted fatigue damage was analysed by scanning electron microscope and X-ray micro-computed tomography visualizations.

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Onuoha, Chukwudike. "Tribological Behaviour of Periwinkle Shell Powder-Filled Recycled Polypropylene Composites." International Journal of Engineering and Technologies 17 (May 2019): 11–20. http://dx.doi.org/10.18052/www.scipress.com/ijet.17.11.

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Polymer composites are increasingly replacing metals in structures such as gears, wheels, clutches, housings, bushings and other areas where tribology is of great importance. Various ways are used to improve the tribological behaviour of neat polymers, and the most familiar method is the incorporation of fibres/fillers in the polymer to produce composites. In this present research, the tribological behaviour of periwinkle shell powder-filled recycled polypropylene composite was studied. Injection moulding was used for the preparation of the composites and the impact strength, wear resistance and fatigue strength were examined. SEM was utilized to support the discussion of the results. The results showed that the incorporation of periwinkle shell powder into polypropylene improved the wear resistance and fatigue strength but showed no improvement in impact strength.

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Onuoha, Chukwudike. "Tribological Behaviour of Periwinkle Shell Powder-Filled Recycled Polypropylene Composites." International Journal of Engineering and Technologies 17 (May 16, 2019): 11–20. http://dx.doi.org/10.56431/p-1u74v2.

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Abstract:

Polymer composites are increasingly replacing metals in structures such as gears, wheels, clutches, housings, bushings and other areas where tribology is of great importance. Various ways are used to improve the tribological behaviour of neat polymers, and the most familiar method is the incorporation of fibres/fillers in the polymer to produce composites. In this present research, the tribological behaviour of periwinkle shell powder-filled recycled polypropylene composite was studied. Injection moulding was used for the preparation of the composites and the impact strength, wear resistance and fatigue strength were examined. SEM was utilized to support the discussion of the results. The results showed that the incorporation of periwinkle shell powder into polypropylene improved the wear resistance and fatigue strength but showed no improvement in impact strength.

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Javanshour, F., A. Prapavesis, N. Pournoori, G. C. Soares, O. Orell, T. Pärnänen, M. Kanerva, A. W. Van Vuure, and E. Sarlin. "Impact and fatigue tolerant natural fibre reinforced thermoplastic composites by using non-dry fibres." Composites Part A: Applied Science and Manufacturing 161 (October 2022): 107110. http://dx.doi.org/10.1016/j.compositesa.2022.107110.

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Ray, D., B. K. Sarkar, and N. R. Bose. "Impact fatigue behaviour of vinylester resin matrix composites reinforced with alkali treated jute fibres." Composites Part A: Applied Science and Manufacturing 33, no. 2 (February 2002): 233–41. http://dx.doi.org/10.1016/s1359-835x(01)00096-3.

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Peijs, A. A. J. M., and J. M. M. de Kok. "Hybrid composites based on polyethylene and carbon fibres. Part 6: Tensile and fatigue behaviour." Composites 24, no. 1 (January 1993): 19–32. http://dx.doi.org/10.1016/0010-4361(93)90260-f.

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Arabi, N. "Static and cyclic performance of cementitious composites reinforced with glass-fibres." Materiales de Construcción 68, no. 329 (March 5, 2018): 146. http://dx.doi.org/10.3989/mc.2018.10216.

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This paper concerns an experimental study of the influence of short glass-fibres randomly oriented of a reinforced cement-based composite on the mechanical behaviour. The matrix material parameters used are: cement/sand ratio and water/cement ratio fixed at 0.5; the glass-fibre content (0%, 0.5%, 1.0%, 1.5%, 2% and 2.5%) and fibre lengths (3, 6 and 12 mm). Composites mechanical characterisation under static behaviour at flexural and compression tests, shows that the reinforcement effect is beneficial only in flexural case. A synergy (matrix-reinforcement) was observed when fibre length of 12 mm is used with application rate of 2% in flexural. The fatigue behaviour determined by Wöhler plots (stress-number of cycles to rupture), derived from experimental results; showed a large results dispersion which is attributed to many causes initiating this damage. The cyclic tests illustrate brittle character of these materials; even with low-amplitude cycles of loading no adaptation of these materials can be reported.

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Anandakumar, R., M. S. Ravikumar, and C. Selvamony. "Mathematical Prediction for BFRP Retrofitted after Fatigue Loading of Concrete Specimens." JOURNAL OF ADVANCES IN CHEMISTRY 13, no. 10 (March 4, 2017): 5944–53. http://dx.doi.org/10.24297/jac.v13i10.5884.

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This paper deals with the experiment investigations on the Basalt Fibre Reinforced Polymer composites wrapped concrete specimens for determining the mathematical prediction for retrofitting of concrete specimens. For the past three decades, fibres are being effectively utilized in engineering fields. Some countries do not have specified codes for structural designing of Fibre Reinforced Polymer composites. Especially for this situation, the mathematical predictions were determined by experimentally for Basalt Fibre Reinforced Polymer composites retrofitted concrete. For this experiment, cubes, cylinders and prisms were cast using M30 grade concrete to analyze the characteristic strengths. The tests were carried out with and without Basalt Fibre Reinforced Polymer wrapping and retrofitted after 0%, 30%, 60% and 90% fatigue loaded or preloaded specimens. The retrofitted specimens with Basalt Fibre Reinforced Polymer wrapping, even after 90% fatigue loaded possess higher strength than conventional one. The observed readings were analyzed and mathematical prediction was developed by using readings and graphical representations. From the study, similar results were observed through experiments and mathematical predictions.

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La Rosa, Angela Daniela, and Stergios Goutianos. "Benefits and Opportunities of Reusing Waste Rotor Blades Materials from a Life Cycle Perspective." Key Engineering Materials 919 (May 11, 2022): 270–77. http://dx.doi.org/10.4028/p-yzl390.

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The present Life Cycle Analysis (LCA) intends to investigate the environmental benefit of using natural fibres and/or recyclable epoxy resins for future manufacturing of small/medium wind turbine blades to handle thermoset polymer composites that are designed to be recyclable at the end of life”). LCA comparison of a modelled blade based on flax fibres reinforced recyclable epoxy resin and a traditional blade made of glass fibres and non recyclable epoxy resin is presented. In the production phase the environmental impacts of the flax fibre reinforced recyclable epoxy resin composite blade are higher than the blade based on glass fibre epoxy composite mainly due to the higher amount of epoxy resin necessary to satisfy the design criteria of the blade e.g. fatigue and deflection. The end of life is significative as the environmental impacts are reduced by the recycling and recovery of the fibres and the resin, being the resin more significative.