Gotowe bibliografie tematyczne / Fibre reinforced epoxy composites

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Gotowa bibliografia na temat „Fibre reinforced epoxy composites”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Fibre reinforced epoxy composites"

Prabakaran, E., D. Vasanth Kumar, A. Jaganathan, P. Ashok Kumar i M. Veeerapathran. "Analysis on Fiber Reinforced Epoxy Concrete Composite for Industrial Flooring – A Review". Journal of Physics: Conference Series 2272, nr 1 (1.07.2022): 012026. http://dx.doi.org/10.1088/1742-6596/2272/1/012026.

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Abstract Fiber composites are the having an good scope in construction industry as they are light in weight, durable, economic, and resistant to temperatures. Many researchers concentrate on the composites for the industrial flooring with the fibers. The main objective of this paper is to review the fiber reinforced epoxy for industrial flooring. Epoxy can be used as flooring elements in industries as they deliver good performance. Since, natural and synthetic fibres can be used with filler matrices, which are very much cheaper than the conventional steel fibres reinforced composite concrete flooring and other type of composites here fibre is considered for reinforcing with epoxy or polymer concrete filler matrix. Fibre-polymer and fibre-concrete composite properties has been reviewed for testing procedure for flexural test, bending test, tensile test and based on the results, it is clear that the fibre-polymer concrete composite, which has good mechanical properties and performance than the mentioned composites, can be made for industrial flooring

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Vedanarayanan, V., B. S. Praveen Kumar, M. S. Karuna, A. Jayanthi, K. V. Pradeep Kumar, A. Radha, G. Ramkumar i David Christopher. "Experimental Investigation on Mechanical Behaviour of Kevlar and Ramie Fibre Reinforced Epoxy Composites". Journal of Nanomaterials 2022 (2.02.2022): 1–10. http://dx.doi.org/10.1155/2022/8802222.

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Natural fibre composites have been replacing synthetic fibre composites in practical applications for the last several years because of the features such as low densities, low weight, relatively inexpensive, recyclability, and excellent mechanical qualities unique to the substance. Thus, the current study examines how Kevlar/Ramie/Nano SiC hybrid fibre reinforced composites are made and their mechanical properties, and it compares them to those made using a single natural fibre reinforced composite. It was found that natural fibre composite densities and hardness were all within acceptable ranges by performing composites’ tensile and flexural strength tests. The hand-lay-up technique used ASTM standards samples to construct the composite specimens with various fibre weight percentages. Increase in mechanical characteristics was achieved by adding the glass and the epoxy fibres into the epoxy matrix. The hybrid composite’s performance is promising, especially those of individual fibre-reinforced composites.

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Kazi, Atik Mubarak, i Ramasastry DVA. "Characterization of continuous Hibiscus sabdariffa fibre reinforced epoxy composites". Polymers and Polymer Composites 30 (styczeń 2022): 096739112110609. http://dx.doi.org/10.1177/09673911211060957.

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The influence of fibre orientation on physical, mechanical and dynamic mechanical properties of Hibiscus sabdariffa fibre composites has been studied. The composites with longitudinal (0°), transverse (90°) and inclined (45°) fibre orientation were prepared using the hand layup technique. ASTM standards were used for characterization of continuous Hibiscus sabdariffa fibre composites. The composite with longitudinally placed fibres yields improved mechanical characteristics. The addition of longitudinal (0°) oriented continuous Hibiscus sabdariffa fibres to the epoxy enhances tensile strength by 460%, flexural strength by 160% and impact strength by 603% compared to neat epoxy. The longitudinal (0°) fibre oriented composite offers higher resistance to water absorption and thickness swelling compared to other types of composites. All continuous Hibiscus sabdariffa fibre epoxy composites possess an improved storage modulus than the neat epoxy resin. The glass transition temperature of continuous Hibiscus sabdariffa fibre composites is 8%–31% lower than that of neat epoxy. Scanning electron microscopy (SEM) images confirm the existence of voids in the matrix, fibre pullout and crack propagation near the fibre bundle, which indicates the stress transfer between fibre and matrix is non-uniform.

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Prasad, M. M., N. Manikandan i S. M. Sutharsan. "Investigation on mechanical properties of reinforced glass fibre/epoxy with hybrid nano composites". Digest Journal of Nanomaterials and Biostructures 16, nr 2 (2021): 455–69. http://dx.doi.org/10.15251/djnb.2021.162.455.

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In this study the experimental investigation of mechanical behaviour of Multi-Walled Carbon nanotubes (MWCNTs) and Aluminium Oxide (Al2O3) reinforced with EGlass/Epoxy nanocomposites at 0.5%, 1.5% and 2.0% of weight rated with 225 GSM, 300 GSM and 450 GSM glass fibres were studied. Test specimens were prepared at the standardof ASTM D638 for tensile specimen ASTM D256 for impact specimen. Testspecimens were prepared at the ratio of MWCNTs: Al2O3 is 1:4. 1.5 wt. % of MultiWalled CNTs filledE-Glass/Epoxy nanocomposites showed improved mechanical properties than glass fiber reinforced epoxy composites.450 GSM reinforced glass fiber epoxy composites containing 1.5wt. % of MWCNTs improved 36.27 % of higher tensile value and 28.57 % of impact value than the glass fibre reinforced epoxy composites. 225 and 300 GSM reinforced glass fibre epoxy composites with 1.5 wt. % of MWCNTs composites also has improved tensile and impact value than glass fibre reinforced epoxy composites. But, overall 450 GSM reinforced fibre nanocomposites showed enhanced mechanical properties than the other GSM reinforced nanocomposites. This proves MultiWalled Carbon Nanotubes is a successful reinforcement for E-Glass/Epoxy matrix and it improves its properties and performance.

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Zhao, Guanghui, Jijia Zhong i Y. X. Zhang. "Research Progress on Mechanical Properties of Short Carbon Fibre/Epoxy Composites". Recent Patents on Mechanical Engineering 12, nr 1 (20.02.2019): 3–13. http://dx.doi.org/10.2174/2212797612666181213091233.

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Background: Short carbon fibre reinforced epoxy composites have many advantages such as high strength-to-weight ratio, corrosion resistance, low cost, short fabrication time and easy manufacturing. Researches on the mechanical performance of the composites are mainly carried out by means of experimental techniques and numerical calculation. Objective: The study aims to report the latest progress in the studies of mechanical properties of short carbon fibre reinforced epoxy composites. Methods: Based on recently published patents and journal papers, the experimental studies of short carbon fibre reinforced epoxy composites are reviewed and the effects of short carbon fibre on the mechanical properties of the composites are discussed. Numerical studies using representative volume element in simulating macroscopic mechanical properties of the short fibre reinforced composites are also reviewed. Finally, future research of short carbon fibre reinforced epoxy composites is proposed. Results: Experimental techniques, experimental results and numerical simulating methods are discussed. Conclusion: Mechanical properties of epoxy can be improved by adding short carbon fibres. Fiber surface treatment and matrix modification are effective in enhancing interfacial adhesion between fiber and matrix, and as a result, better mechanical performance is achieved. Compared to the studies on equivalent mechanical properties of the composites, researches on the micro-mechanism of interaction between fiber and matrix are still in infancy due to the complexity of both the internal structure and reinforcing mechanism.

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Hernandez-Estrada, Albert, Jörg Müssig i Mark Hughes. "The impact of fibre processing on the mechanical properties of epoxy matrix composites and wood-based particleboard reinforced with hemp (Cannabis sativa L.) fibre". Journal of Materials Science 57, nr 3 (styczeń 2022): 1738–54. http://dx.doi.org/10.1007/s10853-021-06629-z.

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AbstractThis work investigated the impact that the processing of hemp (C. sativa L.) fibre has on the mechanical properties of unidirectional fibre-reinforced epoxy resin composites loaded in axial tension, and particleboard reinforced with aligned fibre bundles applied to one surface of the panel. For this purpose, mechanically processed (decorticated) and un-processed hemp fibre bundles, obtained from retted and un-retted hemp stems, were utilised. The results clearly show the impact of fibre reinforcement in both materials. Epoxy composites reinforced with processed hemp exhibited 3.3 times greater tensile strength when compared to the un-reinforced polymer, while for the particleboards, the bending strength obtained in those reinforced with processed hemp was 1.7 times greater than the un-reinforced particleboards. Moreover, whether the fibre bundles were processed or un-processed also affected the mechanical performance, especially in the epoxy composites. For example, the un-processed fibre-reinforced epoxy composites exhibited 49% greater work of fracture than the composites reinforced with processed hemp. In the wood-based particleboards, however, the difference was not significant. Additionally, observations of the fracture zone of the specimens showed different failure characteristics depending on whether the composites were reinforced with processed or un-processed hemp. Both epoxy composites and wood-based particleboards reinforced with un-processed hemp exhibited fibre reinforcement apparently able to retain structural integrity after the composite’s failure. On the other hand, when processed hemp was used as reinforcement, fibre bundles showed a clear cut across the specimen, with the fibre-reinforcement mainly failing at the composite's fracture zone.

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K V, Ambareesh. "Moisture Absorption Studies of COIR and Sisal Short Fiber Reinforced Polymer Composites". International Journal for Research in Applied Science and Engineering Technology 9, nr 9 (30.09.2021): 116–27. http://dx.doi.org/10.22214/ijraset.2021.37928.

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Abstract: Easy availability of natural fibre, low cost and ease of manufacturing have urged the attention of researchers towards the possibility of reinforcement of natural fiber to improve their mechanical properties and study the extent to which they satisfy the required specifications of good reinforced polymer composite for industrial and structural applications. Polymer composites made of natural fiber is susceptible for moisture. Moisture absorption in such composites mainly because of hydrophilic nature of natural fibers. Water uptake of natural fiber reinforced composites has an effect on different. Lot of researchers prepared the natural fiber reinforced composites without conducting water absorption tests; hence it is the potential area to investigate the behavior of the composites with different moisture absorption. In this research the experimental sequence and the materials are used for the study of coir and Sisal short fiber reinforced epoxy matrix composites. The coir and Sisal short fibers are made into the short fibers with 10 mm x 10 mm x 5 mm size. The Epoxy Resin-LY556(Di glycidyl ether of bi phenol) and Hardner-HYD951 (Tetra mine), the water absorption behaviors are analyzed in the coir and Sisal short fibers reinforced epoxy composites. The water absorption behaviors of the epoxy composites reinforced with the coir and sisal short fibers with 25, 30 and 35wt% were analyzed at three different water environments, such as sea water, distilled water, and tap water for 12 days at room temperature. It was observed that the composites show the high level of the water absorption percentage at sea water immersion as compared to the other water environments. Due to the water absorption, the mechanical properties of macro particle/epoxy composites were decreased at all weight percentages. Keywords: Natural fibre, Moisture absorption, Coir and sisal short fibre, Reinforced polymer composites, Water absorption behaviour Polymer matrix composite (Epoxy resin) using Coir and sisal short fibre and to study its moisture absorption behaviour

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Davindrabrabu, Mathivanan, Parlaungan Siregar Januar, Bachtiar Dandi, Mat Rejab Mohd Ruzaimi i Tezara Cionita. "Effect of Fibre Loading on the Flexural Properties of Natural Fibre Reinforced Polymer Composites". Applied Mechanics and Materials 695 (listopad 2014): 85–88. http://dx.doi.org/10.4028/www.scientific.net/amm.695.85.

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The use of pineapple leaf fibres as reinforcement in plastics had increased rapidly in past few years. Thus this project was conducted to determine and compare the flexural strength of pure epoxy and pineapple leaf fibres reinforced epoxy. The natural fibres were mixed with epoxy and hardener by weight percentage fibre content. The process employed to fabricate the specimens was hand lay-up and the natural fibres was oriented randomly. The dimensions of the specimens for flexure test were based on ASTM D790 respectively. The results obtained shows that 15% PALF reinforced epoxy composite achieved the highest flexural strength among the natural fibers reinforced epoxy composites.

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Raghu, M. J., i Govardhan Goud. "Tribological Properties of Calotropis Procera Natural Fiber Reinforced Hybrid Epoxy Composites". Applied Mechanics and Materials 895 (listopad 2019): 45–51. http://dx.doi.org/10.4028/www.scientific.net/amm.895.45.

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Natural fibers are widely used for reinforcement in polymer composite materials and proved to be effectively replacing synthetic fiber reinforced polymer composites to some extent in applications like domestic, automotive and lower end aerospace parts. The natural fiber reinforced composites are environment friendly, have high strength to weight ratio as well as specific strengths comparable with synthetic glass fiber reinforced composites. In the present work, hybrid epoxy composites were fabricated using calotropis procera and glass fibers as reinforcement by hand lay-up method. The fibre reinforcement in epoxy matrix was maintained at 20 wt%. In 20 wt% reinforcement of fibre, the content of calotropis procera and glass fibre were varied from 5, 10, 15 and 20 wt%. The dry sliding wear test as per ASTM G99 and three body abrasive wear test as per ASTM G65 were conducted to find the tribological properties by varying speed, load, distance and abrasive size. The hybrid composite having 5 wt% calotropis procera and 15 wt% glass fibre showed less wear loss in hybrid composites both in sliding wear test as well as in abrasive wear test which is comparable with 20 wt% glass fibre reinforced epoxy composite which marked very low wear loss. The SEM analysis was carried out to study the worn out surfaces of dry sliding wear test and three body abrasive wear test specimens.

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Prasad, Lalta, Shiv Kumar, Raj Vardhan Patel, Anshul Yadav, Virendra Kumar i Jerzy Winczek. "Physical and Mechanical Behaviour of Sugarcane Bagasse Fibre-Reinforced Epoxy Bio-Composites". Materials 13, nr 23 (27.11.2020): 5387. http://dx.doi.org/10.3390/ma13235387.

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In this study, experiments are performed to study the physical and mechanical behaviour of chemically-treated sugarcane bagasse fibre-reinforced epoxy composite. The effect of alkali treatment, fibre varieties, and fibre lengths on physical and mechanical properties of the composites is studied. To study the morphology of the fractured composites, scanning electron microscopy is performed over fractured composite surfaces. The study found that the variety and lengths of fibres significantly influence the physical and mechanical properties of the sugarcane bagasse-reinforced composites. From the wear study, it is found that the composite fabricated from smaller fibre lengths show low wear. The chemically-treated bagasse-reinforced composites fabricated in this study show good physical and mechanical properties and are, therefore, proposed for use in applications in place of conventional natural fibres.

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Rozprawy doktorskie na temat "Fibre reinforced epoxy composites"

Liu, Yan. "Nano-reinforced epoxy resin for carbon fibre fabric composites". Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/nanoreinforced-epoxy-resin-for-carbon-fibre-fabric-composites(284f8361-2530-4fc8-8abe-759ff2e57891).html.

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This thesis reports a study of the effects on processing and properties of incorporating nano-scale reinforcements (multiwall carbon nanotubes, MWCNTs) in the matrix of epoxy- carbon fibre (CF) laminate composites to produce multi-scale composites (M-SC). The main aim of this research was to study the effects of MWCNTs on matrix toughening and the through-thickness properties of M-SCs based on a commonly used aerospace grade epoxy resin — triglycidyl-p-aminophenol (TGPAP) cured with diaminodiphenyl sulphone (DDS). In order to improve resin processing, diglycidyl ether of bisphenol F (DGEBF) was added into the TGPAP/DDS system as a reactive diluent. Factorial experimental design (FED) was used to optimize the composition of this tri-component system to obtain high Tg and low resin viscosity, which gave a TGPAP/DGEBF/DDS system with 30.56 wt.% of DGEBF and a chemical stoichiometry of 0.5. Three types of MWCNTs were used; as-received (AR-), base-washed (BW-) and amine functionalized (NH2-). These were shear-mixed with both the bi- and tri-component systems using a 3-roll mill to produce nanocomposite matrices (NCM). The curing behaviour, dispersion state of MWCNTs in the resin and processability of NCMs were studied to decide upon the preparation method for the final M-SC. The fracture toughness (KIC) and the flexural properties of NCM were affected by both MWCNTs and the matrix type; thus KIC increased by up to 8 % in TGPAP/DDS NCM but decreased by 23% in TGPAP/DGEBF/DDS NCM with 0.5 wt.% AR-CNTs. The addition of both non-functionalized and functionalized MWCNTs increased the flexural modulus. The failure mechanism of NCMs was found to be dominated by the size and distribution of CNT aggregates and the behaviour of MWCNTs, both those dispersed in the matrix and in aggregates. The addition of functionalized MWCNTs increased the interfacial bonding between MWCNT and epoxy resin and thus improved the mechanical properties. All the NCM systems were taken forward to manufacture M-SC using a hybrid resin film infusion (RFI)/hot press process. The fibre volume fraction and the void content could be controlled at 43 ± 5 % for M-SC with TGPAP/DDS NCM and 60 ± 6 % for M-SC with TGPAP/DGEBF/DDS NCM. M-SCs were characterised using a range of tests, including flexural, interlaminar shear strength (ILSS), mode-II interlaminar fracture toughness (GIIC), low velocity impact and compression after impact (CAI). The most obvious improvement occurred for the M-SC with tri-component system with 0.5 wt.% CNTs, whereILSS increased by 16 % upon adding NH2-CNTs and GIIC increased significantly on addition of 0.5 wt.% AR-CNTs and NH2-CNTs, by 85% and 184% respectively. However the effect of MWCNTs on other properties was at best marginal. For example, for the M-SC with TGPAP/DDS, the flexural modulus and ILSS only increased by 4.1 % and 2.3 % with 0.5 wt.% AR-CNT.

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Mahmood, Amjed Saleh. "Processing-performance relationships for fibre-reinforced composites". Thesis, University of Plymouth, 2016. http://hdl.handle.net/10026.1/4181.

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The present study considers the dependence of mechanical properties in composite laminates on the fibre architecture. The objective is to characterise the mechanical properties of composite plates while varying the fibre distribution but keeping the constituent materials unchanged. Image analysis and fractal dimension have been used to quantify fibre distribution and resin-rich volumes (RRV) and to correlate these with the mechanical properties of the fibre-reinforced composites. The formation, shape and size of RRV in composites with different fabric architectures is discussed. The majority of studies in literatures show a negative effect of the RRV on the mechanical behaviour of composite materials. RRV arise primarily as a result of (a) the clustering of fibres as bundles in textiles, (b) the stacking sequence, and/ or stacking process, (c) the resin properties and flow characteristics, (d) the heating rate as this directly affects viscosity and (e) the consolidation pressure. Woven glass and carbon/epoxy fabric composites were manufactured either by the infusion or the resin transfer moulding (RTM) process. The fractal dimension (D) has been employed to explore the correlation between fabric architecture and mechanical properties (in glass or/ carbon fibre reinforced composites with different weave styles and fibre volume fraction). The fractal dimension was determined using optical microscopy images and ImageJ with FracLac software, and the D has been correlated with the flexural modulus, ultimate flexural strength (UFS), interlaminar shear strength (ILSS) and the fatigue properties of the woven carbon/epoxy fabric composites. The present study also considers the dependence of fatigue properties in composite laminates on static properties and fibre architecture. Four-point flexural fatigue test was conducted under load control, at sinusoidal frequency of 10 Hz with amplitude control. Using a stress ratio (R=σmin/σmax) of 0.1 for the tension side and 10 for the compression side, specimens were subjected to maximum fatigue stresses of 95% to 82.5% step 2.5% of the ultimate flexural strength (UFS). The fatigue data were correlated with the static properties and the fibre distribution, in order to obtain a useful general description of the laminate behaviour under flexural fatigue load. The analysis of variance (ANOVA) technique was applied to the results obtained to identify statistically the significance of the correlations. Composite strength and ILSS show a clear dependence on the fibre distribution quantified using D. For the carbon fabric architectures considered in this study, the fatigue properties of composite laminates have significant correlations with the fibre distribution and the static properties of the laminates. The loss of 5-6 % in the flexural modulus of composite laminates indicates an increasing risk of failure of the composite laminates under fatigue loads. The endurance limits, based on either the static properties or the fibre distribution, were inversely proportional to the strength for all laminates.

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Kretsis, George. "Mechanical characterisation of hybrid glass/carbon fibre-reinforced plastics". Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/46982.

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Berg, Jolyon. "The role of fibre coatings on interphase formation in glass fibre epoxy resin composites". Thesis, University of Sheffield, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245546.

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Hsieh, Feng-Hsu. "Nanofiber reinforced epoxy composite". Ohio : Ohio University, 2006. http://www.ohiolink.edu/etd/view.cgi?ohiou1146149557.

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Xiao, Keqin. "Fracture behaviour of rubber-modified epoxies and their carbon fibre-reinforced composites". Thesis, The University of Sydney, 2000. https://hdl.handle.net/2123/27762.

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Prickett, Andrew C. "Intralaminar cracking of fibre reinforced composites : a fracture mechanics and ToF-SIMS study". Thesis, University of Surrey, 2001. http://epubs.surrey.ac.uk/798035/.

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Sirivedin, Suparerk. "Micromechanics of progressive failure in carbon fibre-reinforced composites using finite element method". Thesis, King's College London (University of London), 2001. https://kclpure.kcl.ac.uk/portal/en/theses/micromechanics-of-progressive-failure-in-carbon-fibrereinforced-composites-using-finite-element-method(825de9c4-f644-4b2f-b6d1-95569f46c0a5).html.

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Ghazali, Habibah. "Dual-Capsule Based Self-Healing of Epoxy and Carbon-Epoxy Laminated Composite". Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/15387.

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Since the year 2000, researchers have made extensive efforts to develop novel materials with self-healing ability by embedment of microencapsulated self-healing agents. The motivation behind these studies is to heal the crack once it occurs and to slow down crack growth in the materials. These materials were designed with the capability of repairing damage/fracture autonomously whenever it happens, and the materials subsequently recover their original properties. Many of the early-developed healing systems focused on the healing of polymers and their fibre-reinforced composites with a room temperature-curing system. Because of the difficulty in applying resins with microcapsules normally around 100 μm in size to reinforcing fibres during the fabrication process of composites and due to the limited space between the plies, most studies have adopted a low fibre volume fraction for ease of processing and fabrication. The realisation to structural composites containing a high fibre volume fraction was less studied. In general, a high fibre volume fraction is a critical factor for achieving high specific strength and high specific modulus of the resultant composites. Firstly, this study aims to develop a diglycidyl ether of bisphenol A (DGEBA) epoxy as the self-healing agent and characterise its capability in healing the elevated temperature-cured epoxy, epoxy-based adhesive joints, and carbon-fibre reinforced epoxy composites. A dual-capsule self-healing system containing DGEBA epoxy and mercaptan as its hardener, microencapsulated in similar sizes, was developed to be embedded into the base epoxy resin. This healing system was chosen to match that of the matrix of composite laminates fabricated in this study for its superior thermal stability. Although the DGEBA epoxy/mercaptan self-healing system has been reported to provide the epoxy with room temperature healing, the high viscosity imposed by the healing agent has made room temperature healing conditions less reliable for healing of composite laminates of a high fibre volume fraction, where the amount of the embedded microcapsules is constrained by fibres. Therefore, the effect of healing temperature on viscosity and healing efficiency in the base epoxy is studied to obtain the improved healing conditions. It was found that the better healing performance for this healing system is achieved at 70°C since the viscosity of DGEBA epoxy is much lower at this temperature. With a better flow behaviour, the healing agent has a better capacity to flow and spread onto crack surfaces. Apart from that it was also found that the formed healant film covering thin cavity between two crack surfaces is critical for the healing performance, and at the elevated temperature of 70°C, the full recovery in fracture toughness (KIC) is achieved for Mode I fracture in the epoxy. The dual-capsule self-healing system was then extended to heal delamination in carbon fibre (CF)/epoxy (EP) composite laminates after Mode I interlaminar fracture. One of the main focuses of this study is centred on CF/EP composite laminates embedded with the dual-capsule and with a high fibre volume fraction fabricated using the vacuum assisted resin infusion technique, with the aims to effectively heal delamination as well as matrix microcracking once they occur. Here, it was demonstrated that by properly modulating the amount of microcapsules dispersed on reinforcing CF fabrics, CF/EP composite laminates with a fibre volume fraction as high as 65% can be achieved. The self-healing performance after Mode I delamination in CF/EP composite laminates with the dual-capsule self-healing system of two different sizes (average 123 µm and 65 µm, respectively) of microcapsules was investigated. Effects of incorporating microcapsules on baseline properties of the composite laminates were investigated, and it was found that such incorporation first leads to some reduction in the baseline properties of the laminates. The CF/EP laminate with large size (123 µm) microcapsules shows 4.6% reduction in the original Mode I interlaminar fracture toughness (GIC) as compared to that of the base laminate; while the CF/EP laminate with small size (65 µm) microcapsules shows a reduction of 36.9%. Healing efficiency is characterised by the recovery in the Mode I critical stress intensity factor (KIC) measured using width-tapered double cantilever beam (WTDCB) specimens. Although the full recovery was achieved for the base laminate injected with the same healing agent, the healing efficiency with only 54% recovery was achieved for the laminate with the small size microcapsules, with the maximum being 57% in some cases. In the case of large size microcapsules, the healing efficiency increased to 69% recovery with the maximum being 80% in some cases. It was also observed that the recovery in Mode I interlaminar fracture toughness was directly correlated with the amount of healant film covering the fracture surfaces, with the highest healing efficiency obtained for the laminate with the largest film. In the following study, the self-healing performance after Mode II delamination in CF/EP laminates containing the dual-capsule self-healing system was investigated. The effect of incorporation of the microcapsules on Mode II interlaminar fracture toughness (GIIC) of CF/EP laminates was characterised using end-notched flexure (ENF) specimens. In contrast to the Mode I delamination tests, the results indicated that the Mode II interlaminar fracture toughness (GIIC) of the base CF/EP laminate was improved (up to 48%) with the incorporation of the dual-capsule self-healing system. When healed at 70°C, the dual-capsule self-healing system also provided the laminate with healing capability on Mode II delamination with 63% recovery in GIIC. Observation on the fracture surfaces also revealed that the healing efficiency varies directly with the concentration of healant and the healing of interlaminar region after Mode II fracture. Finally, the self-healing epoxy adhesive was developed using this dual-capsule self-healing system. The healing system was incorporated into a commercial two-part room temperature-cured epoxy adhesive. The addition of 3 wt% microcapsules in concentration into adhesive of 172 (± 50) μm in thickness was shown to increase the baseline lap-shear strength by 28%. The results also revealed an increment to the baseline fracture toughness (GIC) of the epoxy adhesive, with improvement as high as 80% for adhesive with thickness of 273 (±66) μm, measured using tapered-double cantilever beam (TDCB) specimens. The increase in fracture toughness was mainly attributed to enhanced plastic deformation of the host adhesive as well as the crack path deflection caused by the poor adhesion between the microcapsules and the epoxy adhesive. The healing efficiency based on the recovery in the original crack initiation and crack propagation fracture toughness is 52% and 74% respectively.

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Magrini, Michael A. "Fiber reinforced thermoplastics for ballistic impact". Birmingham, Ala. : University of Alabama at Birmingham, 2010. https://www.mhsl.uab.edu/dt/2010m/magrini.pdf.

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Książki na temat "Fibre reinforced epoxy composites"

Chi, P. I. Gonzalez. Deformation micromechanics in polyethylene-epoxy fibre-reinforced composites. Manchester: UMIST, 1997.

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Mourad, Mouben. Fibre/matrix interaction in woven E-glass reinforced epoxy composites. Poole: Bournemouth University, 1995.

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Wilson, Maywood L. Comparison of flexural properties of aramid-reinforced pultrusions having varied matrices, pretreatements, and postcures. Hampton, Va: Langley Research Center, 1987.

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Xiong, June Yu. Visualization of the interphase failure in glass fibre reinforced epoxy composite. Ottawa: National Library of Canada, 1994.

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Fornes, R. E. Effects of high energy radiation on the mechanical properties of epoxy/graphite fiber reinforced composites, covering the period January 1, 1984 - December 31, 1984. [Raleigh, Va.]: North Carolina State University, 1985.

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Moss, A. C. Fracture characteristics of carbon and aramis unidirectional composites in interlaminar shear and open hole tensile tests. Amsterdam: National Aerospace Laboratory, 1986.

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Zhang, Mei. The effects of contamination on the mechanical properties of carbon fibre reinforced epoxy composite materials. Portsmouth: University of Portsmouth, Dept. of Mechanical and Manufacturing Engineering, 1999.

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United States. National Aeronautics and Space Administration., red. Effects of high energy radiation on the mechanical properties of epoxy/graphite fiber reinforced composites. [Washington, D.C?: National Aeronautics and Space Administration, 1987.

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C, Smith, Lumban-Tobing F i Langley Research Center, red. Analysis of thick sandwich shells with embedded ceramic tiles. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1996.

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Fornes, R. E. Report on NASA grant 1562 for research entitled "Effects of high energy radiation on the mechanical properties of epoxy/graphite fiber reinforced composites" covering the period January 1, 1984 - December 31, 1984. [Washington, D.C.?: National Aeronautics and Space Administration, 1985.

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Więcej źródeł

Części książek na temat "Fibre reinforced epoxy composites"

Loos, A. C., i G. S. Springer. "Curing of Epoxy Matrix Composites". W Engineering Mechanics of Fibre Reinforced Polymers and Composite Structures, 263–85. Vienna: Springer Vienna, 1994. http://dx.doi.org/10.1007/978-3-7091-2702-5_10.

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Deeraj, B. D. S., Jitha S. Jayan, Appukuttan Saritha i Kuruvilla Joseph. "Electrospun Fiber-Reinforced Epoxy Composites". W Handbook of Epoxy/Fiber Composites, 393–424. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3603-6_3.

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Deeraj, B. D. S., Jitha S. Jayan, Appukuttan Saritha i Kuruvilla Joseph. "Electrospun Fiber-Reinforced Epoxy Composites". W Handbook of Epoxy/Fiber Composites, 1–32. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-15-8141-0_3-1.

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Kim, Young Nam, i Yong Chae Jung. "Recycling Studies of Epoxy Fiber-Reinforced Composites". W Handbook of Epoxy/Fiber Composites, 373–92. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3603-6_46.

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Kim, Young Nam, i Yong Chae Jung. "Recycling Studies of Epoxy Fiber-Reinforced Composites". W Handbook of Epoxy/Fiber Composites, 1–20. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-15-8141-0_46-1.

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Saba, N., M. T. Paridah, M. Jawaid, K. Abdan i N. A. Ibrahim. "Manufacturing and Processing of Kenaf Fibre-Reinforced Epoxy Composites via Different Methods". W Manufacturing of Natural Fibre Reinforced Polymer Composites, 101–24. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-07944-8_5.

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Monticeli, Francisco M., Roberta M. Neves, José Humberto S. Almeida i Heitor Luiz Ornaghi. "Microscopic Analysis of Hybrid Synthetic/Vegetable Fiber-Reinforced Epoxy Composites". W Handbook of Epoxy/Fiber Composites, 935–65. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3603-6_38.

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Xing, Wenjin, i Youhong Tang. "Modeling and Simulation of Failure in Fiber-Reinforced Polymer Composites". W Handbook of Epoxy/Fiber Composites, 1059–92. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3603-6_42.

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Monticeli, Francisco M., Roberta M. Neves, José Humberto S. Almeida i Heitor Luiz Ornaghi. "Microscopic Analysis of Hybrid Synthetic/Vegetable Fiber-Reinforced Epoxy Composites". W Handbook of Epoxy/Fiber Composites, 1–31. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8141-0_38-1.

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Xing, Wenjin, i Youhong Tang. "Modeling and Simulation of Failure in Fiber-Reinforced Polymer Composites". W Handbook of Epoxy/Fiber Composites, 1–34. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-15-8141-0_42-1.

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Streszczenia konferencji na temat "Fibre reinforced epoxy composites"

Velukkudi Santhanam, Senthil Kumar, Prakash Sampath, Bharani Srikanth Ponnusamy i Mohan Bangaru. "Effect of Micro (Banana) and Nano (SiC) Fillers on Mechanical Behaviors of Basalt/Epoxy Hybrid Composites". W ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86268.

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Basalt Fibre Reinforced Polymers (BFRP) was feasibly utilized as a preferable replacement to the Glass Fibre Reinforced Polymers (GFRP) due to their superior property and behaviour. Besides, reinforcing nano and micro fillers with basalt fiber will result in even better mechanical properties. In this research study, epoxy resin was blended with Cashew Nut Shell Liquid (CNSL) hardener, it beneficial to minimize the healing period. For 50% of epoxy resin, the ratio of CNSL hardener was taken as 50%. Standard Hand lay-up technique was utilized to produce the composite structures. In addition, 20g of nano and micro fillers were mixed with each epoxy-CNSL proportion. Accordingly, both (SiC & Banana) filler reinforced composites were fabricated and cut to the ASTM standard. Finally, the result of mechanical properties such as flexural and the impact (Charpy) of silicon carbide (SiC) and banana filler reinforced samples were compared.

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Aluko, O., M. Li i N. Zhu. "Application of Micromechanics to Static Failure Analysis of Graphene Reinforced Epoxy Nanocomposites". W ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-70710.

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Abstract The effect of tensile loadings and proportions of carbon fiber on the allowable stress calculations and static failure analysis of carbon fiber epoxy composites were investigated under uniaxial tensile loadings. Micromechanical modeling analysis was applied to model the failures of composites at the continuum length scale. The results obtained from molecular dynamics analysis of graphene and epoxy, were utilized as inputs in the MAC/GMC micromechanics software to model and evaluate the allowable stress values and static failures of carbon fiber reinforced epoxy composites. The computed results for composite elastic allowable stress estimation for the average materials and the static failure analysis were compared and these results were in agreement. The study has added to the understanding of the failure mechanism of the carbon fiber reinforce epoxy composites as well as the interactions of the constituents at failure.

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Akderya, Tarkan, Nesrin Horzum Polat i Buket Okutan Baba. "The Effect of Acidic Environment on Bending Behaviour of Glass-Carbon/Epoxy Based Hybrid Composites". W 6th International Students Science Congress. Izmir International Guest Student Association, 2022. http://dx.doi.org/10.52460/issc.2022.038.

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In this study, the effect of an acidic environment on the bending properties of hybrid composites was investigated. Instead of conventional glass fibre/epoxy and carbon fibre/epoxy polymer composite materials, glass-carbon fibre reinforced epoxy polymer (GCFREP) hybrid composite materials against the low strength of glass fibre and high cost of carbon fibre have been used. Sulfuric acid (H2SO4) - nitric acid (HNO3) combination has been formed to simulate an acid rain environment. Synthetic acidic solutions of H2SO4 - HNO3 at pH values of 1.0, 2.0, and 3.0 at -10, 25, and 40 °C have been prepared. GCFREP hybrid composite materials have been immersed in these solutions periodically for one day and 1-3-6-9-12 weeks. Samples of GCFREP hybrid composite materials that complete the exposure to acidic media within specified periods have been subjected to three-point bending tests. As a result of the research, it has been observed that the bending properties of GCFREP hybrid composites change significantly as the acidity of the environment and ambient temperature values increases. These changes have become more evident with prolonged exposure durations.

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Agarwal, Harshit, i Suhasini Gururaja. "Modelling of Orthogonal Cutting of Idealized FRP Composites". W ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37631.

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Finite Element modelling (FEM) of orthogonal cutting of Idealized carbon fiber reinforced plastics (I-CFRP) specimens has been presented in this work. I-CFRP specimens were prepared by embedding carbon fibre tows in an epoxy matrix at 5 mm center to center spacing. Force signals and full-field strains were measured during orthogonal cutting. 3D-FE modelling of the process has been done in ABAQUS/Explicit. Failure mechanisms during orthogonal cutting have been incorporated in the FE model through a cohesive zone model of the fibre-matrix interface, and a ductile damage criteria with damage evolution has been employed for the epoxy matrix. The model shows that matrix damage is significant with marginal fibre matrix debonding. Strains in the model have been compared with results from DIC and show a close match.

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Alford, Lorenleyn de L. H., Sidnei Paciornik, José R. M. d’Almeida, Marcos H. de P. Mauricio i Haimon D. L. Alves. "Tridimensional characterization of epoxy matrix glass-fiber reinforced composites". W Brazilian Conference on Composite Materials. Pontifícia Universidade Católica do Rio de Janeiro, 2018. http://dx.doi.org/10.21452/bccm4.2018.05.05.

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Guduru, Akhil Kumar, V. N. B. Prasad Sodisetty i Vidya Prudhvi Sai Katari. "Design and Analysis of Natural Fibre Reinforced Epoxy Composites for Automobile Hood". W International Conference on Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2019. http://dx.doi.org/10.4271/2019-28-0086.

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Prasad, Sodisetty V. N. B., G. Akhil Kumar, K. V. Prudhvi Sai i B. Nagarjuna. "Design and optimization of natural fibre reinforced epoxy composites for automobile application". W INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5117928.

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Imoisili, Patrick, Emeka Nwanna, George Enebe i Tien-Chien Jen. "Investigation of the Acoustic Performance of Plantain (Musa Paradisiacal) Fibre Reinforced Epoxy Biocomposite". W ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-94773.

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Abstract Sound is produced by the fluctuation of oscillation waves caused by variations in pressure in a medium containing various frequency ranges, which can be detected by either an animal or a human auditory apparatus and then transferred to the brain for analysis. Noise can be diminished and controlled by using absorptive materials. This is necessary because noise has a negative effect on public health, sharing of knowledge, and serenity, and it is getting worse every day as a result of urbanization and increased affiliated functions. Utilization of natural and synthetic reinforced polymer composites in noise pollution control is an emerging area of research. Natural fibers could potentially replace synthetic fibre reinforced composites due to their low impact on human health and environmental friendliness, according to research. Though academics have been excited about studying their mechanical features, little attention has been paid to quantifying their sound reduction behaviours. Natural fibers, when interacting with a variety of sound frequency and intensity, the varied structures of sound absorbing materials, such as porous structure, hollow structure, multi-dimensional size and length structure, or solid composite materials, having their own distinctive sound absorbing capabilities. This study aims to develop and examine the void content, impact, hardness and acoustic properties of a natural fibre reinforced biocomposites. Natural fibre was extracted from plantain (Musa paradisiacal) fibre (PF), using the water retting method. Extracted fibre wasd used to prepare a fibre reinforced biocomposite using an epoxy resin as the matrix. Biocomposite with 5, 10, 15 and 20 (Wt. %) PF content were fabricated. Impact, hardness and void content analysis was conducted on prepared biocomposite in triplicate. Surface morphology of the fracture surface of prepared biocomposite was examine using a scanning electron microscope (SEM). Porosity and sound absorption coefficient properties of the fibre reinforced biocomposite were also investigated. Test analysis shows that impact, hardness and void content of the biocomposite, increases as PF content increases. Maximum hardness and impact strength were observed at 15 (w %). SEM analysis, shows the existence of cavities on the fracture surface, together with rough fibre surfaces that easily trap air, and this feature tends to boost the biocomposite’s sound absorption qualities.The sound absorption coefficient shows improvement as fibre volume increases in the bio composite. Results suggest that of PF reinforced biocomposites could be less costly, feasible and ecologically superior alternatives to synthetic fibre composites for acoustic applications in areas like building architecture and automotive industries.

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Babu, S. U. Suresh, C. S. Venkatesha i A. S. Sharan. "Sisal fibre reinforced epoxy composites: Effect of fibre length on strain energy density and toughness". W PROCEEDINGS OF INTERNATIONAL CONFERENCE ON ADVANCES IN MATERIALS RESEARCH (ICAMR - 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0023828.

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Agarwal, Gaurav, i Anirudh Mishra. "Fatigue behavior of wooden fiber reinforced epoxy composites". W PROCEEDINGS OF THE 14TH ASIA-PACIFIC PHYSICS CONFERENCE. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0036400.

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Raporty organizacyjne na temat "Fibre reinforced epoxy composites"

Sheets, Colton. PR-201-154500-R01 Composite Repair Load Transfer Study. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), marzec 2018. http://dx.doi.org/10.55274/r0011468.

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The objective of the PRCI MATR-3-11 Composite Repair Load Transfer Study was to evaluate the effect of internal pipe pressure during installation of composite reinforcement systems. Historically, there has been little work evaluating the effect of internal pressure during installation, even though almost all composite installations on transmission pipelines are performed with internal pressure present in the pipe. The focus of this work was specifically limited to reinforcement of pipelines containing simulated corrosion anomalies. Five composite repair technologies from four composite manufacturers were evaluated in this study including: � Western Specialties Ultra-Wrap (E-glass/epoxy) � Western Specialties Composi-Sleeve (steel sleeve with E-glass overwrap) � Citadel (carbon fiber/epoxy) � Furmanite (carbon fiber/epoxy) � NRI Steel Wrap (high-modulus carbon fiber/epoxy) This study used full-scale testing to analyze the load transfer between the composite repair and pipe with internal pressure present during installation and whether this condition impacts the reinforcement provided by the composite repair system. The anomaly configuration evaluated in this study was a machined corrosion defect simulating 50% wall loss in 12.75-inch x 0.375-inch, Grade X42 pipe material. For safety, internal pressure during installation was limited to 50% SMYS (1,236 psig) for the corrosion samples. The composite repairs for the corrosion defects were installed at internal pressure levels of 0 psig, 25% SMYS (618 psig), and 50% SMYS (1,236 psig). Following repair installation, the reinforced full-scale samples were burst tested or pressure cycled to failure to evaluate the repair's performance. Results indicated that, in general, internal pressure during installation did not significantly impact the ability of the composite systems to reinforce the corrosion anomalies evaluated in this study when installed at or below 50% SMYS. Installation pressures up to 50% SMYS had no noticeable effect on the burst pressure of the corroded sample composite repairs, and the burst pressure of all repairs were equivalent to pressure levels for an unreinforced, undamaged pipe. Also, all repairs failed at approximately the same average burst pressure, regardless of installation pressure. Furthermore, installation pressures up to 50% SMYS had little or no noticeable effect on the fatigue life of reinforced corrosion samples; all sample repairs reached the target runout of 250,000 cycles. Observations from the burst testing suggested that loads from the corroded region were not transferred to the composite repair until the corroded region began to yield, regardless of the pressure at which the composite was installed (applicable for installation pressures at or below 50% SMYS and a corrosion depth of 50%). The results and findings of this study provide valuable information to the pipeline industry for addressing an issue of significant interest for many years, and one not previously addressed in a comprehensive manner via full-scale testing. An important observation from this study is that the performance of composite repairs made on corrosion defects does not appear to be appreciably reduced when internal pressures up to 50% SMYS are present during installation.

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Poole, M., i M. Gower. Mechanical Characterisation of 3D Fibre-Reinforced Plastic (FRP) Composites. National Physical Laboratory, maj 2022. http://dx.doi.org/10.47120/npl.mgpg151.

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Trask, Richard S., Mark Hazzard i Tom Llewellyn-Jones. Additive Layer Manufacturing of Biologically Inspired Short Fibre Reinforced Composites. Fort Belvoir, VA: Defense Technical Information Center, marzec 2014. http://dx.doi.org/10.21236/ada606966.

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Beaver, P. W. A Review of Multiaxial Fatigue and Fracture of Fibre-Reinforced Composites. Fort Belvoir, VA: Defense Technical Information Center, styczeń 1987. http://dx.doi.org/10.21236/ada191990.

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Salmeron Perez, N., R. M. Shaw i M. R. L. Gower. Mechanical testing of fibre-reinforced polymer matrix composites at cryogenic temperatures (-165ºC). National Physical Laboratory, listopad 2022. http://dx.doi.org/10.47120/npl.mat112.

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Dissanayake, N. Assessment of Data Quality in Life Cycle Inventory (LCI) for Fibre-reinforced Polymer (FRP) composites. National Physical Laboratory, sierpień 2022. http://dx.doi.org/10.47120/npl.mat106.

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Pemberton, R. G., D. Edser i MRL Gower. Optimisation of acid digestion conditions for volume fraction measurements of hard to digest fibre-reinforced polymer composites. National Physical Laboratory, wrzesień 2020. http://dx.doi.org/10.47120/npl.mn12.

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Salmeron Perez, N., R. M. Shaw i M. R. L. Gower. Mechanical testing of fibre-reinforced polymer matrix composites at cryogenic temperatures. Requirements for mechanical test capability at -269°C (4 K). National Physical Laboratory, czerwiec 2022. http://dx.doi.org/10.47120/npl.mat102.

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Spetsieris, N., i D. Edser. Framework for dynamic uncertainty budget evolution for mode I fracture toughness measurements of fibre-reinforced plastic (FRP) composites: a user’s guide to uncertainty budget calculation tool. National Physical Laboratory, czerwiec 2022. http://dx.doi.org/10.47120/npl.mat104.

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