Damping Properties of Hybrid Composites Made from Carbon, Vectran, Aramid and Cellulose Fibers (original) (raw)
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Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2018
In this study, the vibration and damping characteristics of the hybrid composites reinforced with plain woven S-glass and intraply woven carbon/Kevlar fiber fabrics are investigated. Vibration tests on the samples have been conducted only for measuring the first mode of natural frequency with application of experimental modal analysis procedures. Symmetric and asymmetric layering structures have been prepared for the hybrid composite configurations in order to study the stacking sequence effects. Damping ratios have been evaluated from the logarithmic decrement method by using acceleration–time envelope curves. Results have shown that position and percentage of the fibers in the composites are the most effective parameters for natural frequency and damping characteristics of hybrid samples, and some samples have shown the synergistic effects leading to a significant enhancement in damping and natural frequency.
Manufacturing and performance of hybrid fabric reinforcements and their composites
HAL (Le Centre pour la Communication Scientifique Directe), 2018
In this paper we present some recent results on our studies on fiber hybrid composites using carbon and glass fibers for novel applications in the field of wind energy, sports and leisure. The fabrics are manufactured from T700SC carbon fiber from Toray and 111A E-glass from Owens Corning while the composites using these fabrics are manufactured using RTM process with epoxy resin. Three hybridization strategies, namely, Interply, intraply and intermingled hybrids, and their mechanical behavior is planned to be investigated. The current work investigates tensile and flexural properties of intraply and interply hybrids. Although possessing a lower strength both in tensile and flexural loading the interply hybrids offer enhanced failure strain to the hybrid composites. Hence, the positive hybrid effect that is also been reported by several researchers for carbon and glass hybrids is actually higher for interply hybridized composites when compared to intraply hybridized ones. The interply hybrids demonstrate a drastic reduction in the strength and modulus properties both in tensile and flexural loading. The results also demonstrate that improved dispersion, leads to better mechanical performance in hybrid composites. Among the intraply hybrids, hybrid with three carbon and three glass tows blocked together demonstrates superior mechanical performance among all.
Hybrid fabrics for use in bio-based composites for technical applications
Materials Today: Proceedings, 2020
This feasibility study investigates the mechanical properties of novel hybrid biocomposites for lightweight applications, which include high content of components based on renewable feedstock and at the same time show high mechanical performance. In contrast to established synthetic hybrid composites containing different types of synthetic fibers in a one composite, this is a combination of synthetic high-performance fibers with natural fibers in one reinforcing textile manufactured using a weaving technique. The investigated bio-hybrid woven textiles contain a combination of flax with glass or carbon fibers. In this study the bending properties of the bio-hybrid textile composites are evaluated in comparison with biocomposites containing merely flax textiles. The biocomposites are manufactured by embedding the hybrid fabrics into a bio-based epoxy matrix. The results show that the use of the hybrid woven textiles with a mass fraction of natural fibers corresponding to 50% enables manufacture of biocomposites with significantly higher bending properties compared with flax fiber-reinforced biocomposites. Furthermore, the achieved values are comparable with those of the sandwich-structured hybrid biocomposites.
Effect of Hybridization on Stiffness Properties of Woven Textile Composites
Applied Composite Materials, 2012
The present study focuses on stiffness properties of woven textile reinforced polymeric composites with respect to hybridization, and geometry of reinforcement. The analyzed composites represent combinations of different fibre materials (E-glass, Kevlar 49, carbon HM) in a predetermined fabric geometry (a plane weave embedded in thermosetting polymeric resin) serving controlled properties and required performance. The effects of hybridization on the stiffness properties of woven textile composites have been studied with respect to the fibres materials, the unbalancing degree of fabrics, and the variation of compactness and undulation of yarns. Some undesirable effects in fabric geometry can be overcome by the combined effects of hybridization and compactness.
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2019
This study focuses on tensile and flexural behaviors of epoxy composites, which have been reinforced by oxidized polyacrylonitrile fibers and high-performance fibers (carbon, glass, and Kevlar). In hybrid composites, the parameters of hybridization show positive or negative hybrid effects on its mechanical properties. The results of energy absorption achieved from the tensile test depicted that reinforced hybrid composites by two plies of oxidized polyacrylonitrile fiber and two plies of carbon, Kevlar, and glass fibers with energy absorption of 916, 700, and 899 kJ m–3 had the maximum hybridization parameter, which were 1.1, 0.64, and 1.54, respectively. Also, the mentioned hybrid composites with flexural stresses of 279.4, 198.5, and 167.3 MPa had the maximum hybridization parameter in a flexural test, which were 3.01, 2.68, and 1.80, respectively. Hybrid composites, which were reinforced by three plies of oxidized polyacrylonitrile fiber/one ply carbon fibers, three plies of oxid...
Hybrid Effect in In-Plane Loading of Carbon/Glass Fibre Based Inter- and Intraply Hybrid Composites
Journal of Composites Science
Experimental studies are presented on quasi-static tensile and compressive loading of composites hybridised at two levels: intraply and interply. Consistent reinforcements in the form of novel unidirectional fabrics were developed using T700SC carbon and E-CR glass fibres. Composites were manufactured using Resin Transfer Moulding process with epoxy resin and characterised to ensure consistency and comparability, further enabling easier understanding and confirmation of hybrid effect in a reliable way. Failure strain in tension for interply hybrid revealed a positive hybrid effect of +7.4%, while interply hybrid showed a negative hybrid effect of −6.4% in compression. Intraply hybrid with three carbon and three glass tows blocked together demonstrated the best mechanical performance among all hybrids; synergistic effects of +17.8% and +39.6% in tensile and compressive strength, respectively, was observed for this hybrid configuration. The results show that different hybridisation st...
Article Improved Strength and Toughness of Carbon Woven Fabric
2014
This investigation examines the role of carboxyl functionalized multi-walled carbon nanotubes (COOH-MWCNTs) in the on-and off-axis flexure and the shear responses of thin carbon woven fabric composite plates. The chemically functionalized COOH-MWCNTs were used to fabricate epoxy nanocomposites and, subsequently, carbon woven fabric plates to be tested on flexure and shear. In addition to the neat epoxy, three loadings of COOH-MWCNTs were examined: 0.5 wt%, 1.0 wt% and 1.5 wt% of epoxy. While no significant statistical difference in the flexure response of the on-axis specimens was observed, significant increases in the flexure strength, modulus and toughness of the off-axis specimens were observed. The average increase in flexure strength and flexure modulus with the addition of 1.5 wt% COOH-MWCNTs improved by 28% and 19%, respectively. Finite element modeling is used to demonstrate fiber domination in on-axis flexure behavior and matrix domination in off-axis flexure behavior. Furthermore, the 1.5 wt% COOH-MWCNTs increased the toughness of carbon woven composites tested on shear by 33%. Microstructural investigation using Fourier Transform Infrared Spectroscopy (FTIR) proves the existence of chemical bonds between the COOH-MWCNTs and the epoxy matrix.
THE 2ND INTERNATIONAL CONFERENCE ON DESIGN, ENERGY, MATERIALS AND MANUFACTURE 2021 (ICDEMM 2021)
We investigated the influence interply of basalt fibre into carbon fabric under tensile and three-point bending loads. Basalt fabric was inter-ply into the carbon fabric by increasing from 10%, 20%, 30%, 40% and 50% of the ten layers of carbon fabrics. Basalt fabrics have laid as the core on the carbon fibre reinforced plastics. The vacuum injection moulding is employed to produce the hybrid composites panel. The tensile and three-point bending has done been in analysing the effect of basalt fabric inter-ply with carbon fabrics on its mechanical properties. The ASTM D 638 and ASTM D709 standards were employed, respectively. The tensile test results show that the content of several basalt fabrics increased on the carbon fibre reinforced polymer have linearly decreased the tensile strength and modulus. Contrary, the tensile strain of CFRP has slightly increased due to the deformability behaviour of basalt fabrics. Then, on three-point bending load did not significantly influence their mechanical properties. In conclusion, interply is a batter approach for the hybridization of basalt fabric and carbon fabrics are strongly dependent on volume fraction and matrix type.
Jurnal Teknologi, 2015
The growing use of high-performance materials, which are made of hybrid composite systems, has increased rapidly in engineering applications. Hybridization of woven carbon, glass and Kevlar fibre offers better mechanical properties of composite materials. This is also an effective way to reduce the cost of advanced composites. At the moment information on compressive properties of hybrid composites is very limited. It is well known that the compressive strength of composite materials is lower than the tensile strength. Therefore, compressive strength becomes one of the most important criteria in designing composite structures. Therefore, this research is aimed to evaluate the compressive properties of hybrid composites and compare to the properties of neat systems. Hybrid composite samples were fabricated using a vacuum bagging system. The compressive properties of Kevlar hybrid with carbon and glass composites were studied using an INSTRON 3382 universal machine with a constant cro...
Mechanical Properties in Hybridization of Composite Using Synthetic and Natural Fiber
IAEME PUBLICATON, 2016
This paper is about mechanical properties in waste silk in silk related industries situated in the Dharmavaram is a city in Anantapur district of the Indian state of Andhra Pradesh. The city is famous for its handloom silk sarees. The city is renowned for cotton, silk weaving industries and leather puppets. Experiments were conducted under laboratory condition to assess the effect of different environment such as subzero, steam, saline water and natural conditions for various time lengths. The change in weight, volume and dimensions are studied for various treatments. Shear strength of the composites was evaluated by three point bend test as per ASTM standard. The increase the potential use of waste silk fiber, in the present study the erosion wear behavior of silk fiber and hybrid laminate composites with Jute and synthetic fiber glass have also been carried out. Dharmavaram region in Anantapur is world-famous for the handmade pure silk sarees. It’s a major hub for Silk trade with end to end silk related industries situated in the region supporting a major portion of population. silk manufacturing also wastes are generated during manufacturing. These wastes to some extent are used for manufacturing less delicate products such as sportswear, draperies and upholstery. In order to find value added application of this waste, the present work deals with preparation and characterization of epoxy composite with addition of waste silk fibers