Journal articles: 'CNF/Epoxy Glass Fiber'

1

Chen, Xing Kai. "Research on Properties of CNF/Glass Fiber/Epoxy Composites." Applied Mechanics and Materials 513-517 (February 2014): 161–64. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.161.

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In the present investigation, carbon nanofibers (CNF) were dispersed in epoxy matrix to form CNF/glass fiber/epoxy composites. Before blending, CNF was oxidated to get more functional groups on CNF and improve the interface combination between resin and CNF, the infrared spectrum was used to test the efficiency. After that, tensile modulus tests were carried on for CNF/glass fiber/epoxy composites with different CNF fractions, the results indicated that there were slight improvements of tensile modulus when adding CNF. At 3.0 wt% of CNF, composites have the high improvement of tensile modulus, but the reinforcement of CNF decreased at 5.0 wt% of CNF. And the CNF reinforcement efficiency was analyzed using modified Coxs model and rule of mixture.

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Taheri-Behrooz, F., M. Esmkhani, and A. Yaghoobi-Chatroodi. "Effect of testing procedure on the in-plane shear properties of CNF/glass/epoxy composites." Polymers and Polymer Composites 28, no. 3 (August 6, 2019): 159–69. http://dx.doi.org/10.1177/0967391119867200.

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Many investigations have demonstrated that the addition of nanoscale particles could affect in-plane shear properties of the laminated composites. Besides, a variety of testing procedures were introduced to evaluate the in-plane shear properties of the multiscale composite materials. In the current research, Iosipescu shear, double V-notched rail, and off-axis tensile testing methods were used to measure in-plane shear modulus and strength of the glass/epoxy and carbon nanofiber (CNF) as 0.25 wt% CNF/glass/epoxy laminated composites. In-plane shear properties of the CNF/glass/epoxy specimens were increased in comparison with the neat glass/epoxy specimens using all three testing procedures. However, the improvements were not identical for all the testing methods. The maximum improvements in the in-plane shear modulus and strength recorded using off-axis tensile test method were as 11% and 15.6%, respectively. In the off-axis tensile test method, all in-plane stress components are activated in the fracture plane parallel to the fiber orientation which are responsible for the failure initiation and propagation. Consequently, enhancing the resin’s mechanical property and interface bonding quality using CNF could remarkably enhance the in-plane shear property of the CNF/glass/epoxy specimens. On the other hand, the special fiber orientation of the specimens in Iosipescu shear and V-notched rail methods prevents the reinforcing effects of the CNF particles to be effectively revealed.

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Rathore, Dinesh Kumar, Rajesh Kumar Prusty, and Bankim Chandra Ray. "An Assessment of Mechanical Performance of CNF Modified Glass Fiber/Epoxy Composites under Elevated Temperatures." Materials Science Forum 978 (February 2020): 311–15. http://dx.doi.org/10.4028/www.scientific.net/msf.978.311.

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The objective of this research is to evaluate the temperature dependent strengthening mechanism of 0.5 wt.% carbon nanofiber reinforced glass fiber/epoxy (CNF-GE) as a function of environmental temperature. Flexural response of the CNF-GE composite has been studied at 30°C, 70°C and 110°C temperatures and compared over control glass fiber/epoxy (GE) composite. When flexural test was conducted at room temperature, CNF-GE composite exhibited about 29% improvement in strength, over control GE composite. With increase in environmental temperature, the extent of strength enhancement continued to decrease and at 110°C, the strength of the CNF-GE composite was found to be about 12% lower than control GE composite. Visco-elastic properties of CNF-GE and control GE composites have also been studied in the temperature range of 40 to 200°C.

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Sarim, Ali, Bo Ming Zhang, and Chang Chun Wang. "Effect of Processing Techniques Used for Improvement of Mechanical Properties of Glass Fiber Epoxy Nano Composites." Applied Mechanics and Materials 332 (July 2013): 363–68. http://dx.doi.org/10.4028/www.scientific.net/amm.332.363.

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The incorporation of carbon nanofibers with a high aspect ratio and extremely large surface area into glass/epoxy polymers improve their mechanical properties significantly. Previously large number of efforts have been made to improve mechanical properties by mixing carbon nanofibers into resin, however, it may raise high viscosities which create difficulties during manufacturing of polymer composite samples. Presently, an attempt has been made to improve mechanical properties of nanocomposites by using, a different technique i.e spraying the Carbon nanoFibers (CNF) on glass fabric layers before impregnating it with epoxy resin. This paper presents influence of two different processing techniques used for manufacturing of polymer nanocomposites. Firstly, solution was prepared to obtain well dispersed epoxy resin filled with 1.0 wt % CNF, to impregnate carbon fabric in a vacuum assisted resin transfer molding (VARTM) setup for sampling. Secondly, the nanocomposite samples were prepared using a spraying methodology i.e dispersing the CNF solution on carbon fabric and followed by VARTM. Tensile, compression and flexural tests were performed to evaluate the effectiveness of CNF addition on the improvement of mechanical properties by using both techniques. Results indicated, CNF addition offered simultaneous increase in mechanical properties in different percentages by using both the processes respectively. SEM analysis of fractured surfaces has also been carried out to examine the micro structural details of in-depth study.

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Wang, Yanlei, Yongshuai Wang, Baoguo Han, Baolin Wan, Gaochuang Cai, and Ruijuan Chang. "In Situ Strain and Damage Monitoring of GFRP Laminates Incorporating Carbon Nanofibers under Tension." Polymers 10, no. 7 (July 16, 2018): 777. http://dx.doi.org/10.3390/polym10070777.

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In this study, conductive carbon nanofibers (CNFs) were dispersed into epoxy resin and then infused into glass fiber fabric to fabricate CNF/glass fiber-reinforced polymer (GFRP) laminates. The electrical resistance and strain of CNF/GFRP laminates were measured simultaneously during tensile loadings to investigate the in situ strain and damage monitoring capability of CNF/GFRP laminates. The damage evolution and conduction mechanisms of the laminates were also presented. The results indicated that the percolation threshold of CNFs content for CNF/GFRP laminates was 0.86 wt % based on a typical power law. The resistance response during monotonic tensile loading could be classified into three stages corresponding to different damage mechanisms, which demonstrated a good ability of in situ damage monitoring of the CNF/GFRP laminates. In addition, the capacity of in situ strain monitoring of the laminates during small strain stages was also confirmed according to the synchronous and reversible resistance responses to strain under constant cyclic tensile loading. Moreover, the analysis of the resistance responses during incremental amplitude cyclic tensile loading with the maximum strain of 1.5% suggested that in situ strain and damage monitoring of the CNF/GFRP laminates were feasible and stable.

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Nisha, M. S., and Dalbir Singh. "Manufacturing of Smart Nanomaterials for Structural Health Monitoring (SHM) in Aerospace Application Using CNT and CNF." Journal of Nano Research 37 (December 2015): 42–50. http://dx.doi.org/10.4028/www.scientific.net/jnanor.37.42.

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In this present work, the experimental study of developing the smart material by using 2 different preparation methods for developing nanomaterial for Glass fiber reinforced polymers (GFRP) in order to determine the structural damage. The first method deals with the development of Fiber mat using PVA-CNF (Poly vinyl Alcohol-Carbon nanoFiber) and PVA-CNT (Poly vinyl Alcohol – Carbon nanoTube) , which is embedded into the GFRP. Second method deals with the dispersion of both CNF and MWCNT with epoxy matrix (sonication process) to manufacture GFRP by using Vacuum Resin Transfer Molding (VARTM) process. Embedding CNT and CNF fiber is easy which does not downgrade the material’s mechanical properties. PVA-CNF and PVA-CNT sensors were placed at various orientations and different wt. % of CNT and CNF fiber mat were manufacture and embedded on the GFRP has been done in first method, and in the second method, dispersion of the CNF-MWCNT with various wt. % in the GFRP composite has been done. The various incremental loading-unloading step had been applied to the manufactured specimens and their corresponding electrical resistance were observed. The electrical conductivity of the fiber sensor and nanomatrix were compared, due to its resistivity effect on the specimens will be monitored and simultaneously the potential for stress/strain and damage monitoring during the mechanical tests can be assessed.

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Sarim, Ali, Bo Ming Zhang, and Chang Chun Wang. "Tensile and Compression Behavior of Woven Glass/Epoxy Nano Composites Based on Spraying Methodology." Applied Mechanics and Materials 446-447 (November 2013): 27–31. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.27.

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Nanocomposites have been utilized increasingly because of their high strength, stiffness, toughness, and through-thickness properties. The incorporation of carbon nanofibers with a high aspect ratio and extremely large surface area into glass/epoxy polymer composites improve their tensile and compression properties significantly. Although a number of efforts have been made to improve various properties by mixing nanoparticles directly into resin, however, it could lead to high viscosities which create problems during processing. In this particular study, an attempt has been made to investigate tensile and compression behavior of nanocomposites by using, state of the art, a different technique i.e spraying the Carbon nanoFibers (CNF) on dry woven glass pre-form before infusion. The nanocomposite samples were prepared using a spraying methodology i.e dispersing the 2.0 weight percent CNF solution on glass fabric, and evaporating the solvent such that only nanofibers remain on perform, followed by Vacuum Assisted Resin Transfer Molding (VARTM). Tensile and compression tests were performed to evaluate the effectiveness and behavior of CNF addition on these mechanical properties. Results indicated simultaneous improvement in tensile and compression properties by incorporating a very small amount of carbon nanofibers into the matrix system. 1821 percent improvement in tensile strength and 6-9 percent in compressive strength, with respect to the neat composite. The rise in their modulus has also been discussed in detail and part of this study. For in-depth analysis, microscopic approaches were also carried out to investigate the fracture behavior and mechanism of material. Scanning electron microscopy of fractured surfaces revealed improved primary fibermatrix adhesion and indications of CNF-induced matrix toughening due to the presence of CNFs. SEM evaluation also revealed relatively less damage in the tested fracture surfaces of the nanophased composites in terms of matrix failure, fiber breakage, matrixfiber de-bonding, and de-lamination, compared to the neat system.

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Song, Jun Hee. "Manufacturing method of carbon and glass fabric composites with dispersed nanofibers using vacuum-assisted resin transfer molding." e-Polymers 14, no. 5 (September 1, 2014): 345–52. http://dx.doi.org/10.1515/epoly-2014-0091.

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AbstractFiber-reinforced composites have favorable structural characteristics such as their light weight, high specific strength, and high stiffness. Vacuum-assisted resin transfer molding (VARTM), used for manufacturing these composites, is relatively simple and provides materials with excellent mechanical properties. In this study, the author investigated the utility of VARTM in improving the performance of a carbon nanofiber (CNF)/carbon fiber composite impregnated with thermosetting resin. Processing parameters were determined, and the integrity of the manufactured composites was assessed. Carbon and glass fibers were used as reinforcing materials in an epoxy resin matrix. CNFs, which have excellent thermal and electrical characteristics, were dispersed in the composites. The pore sizes using the 0°/90°- and 90°/45° types of laminates were about 45 and 50 μm, respectively. The integrated composites produced had low porosity (below 3.7×10-5%).

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Abasi, Falak O., and Raghad U. Aabass. "Thermo-mechanical behavior of epoxy composite reinforced by carbon and Kevlar fiber." MATEC Web of Conferences 225 (2018): 01022. http://dx.doi.org/10.1051/matecconf/201822501022.

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Newer manufacturing techniques were invented and introduced during the last few decades; some of them were increasingly popular due to their enhanced advantages and ease of manufacturing over the conventional processes. Polymer composite material such as glass, carbon and Kevlar fiber reinforced composite are popular in high performance and light weight applications such as aerospace and automobile fields. This research has been done by reinforcing the matrix (epoxy) resin with two kinds of the reinforcement fibers. One weight fractions were used (20%) wt., Epoxy reinforced with chopped carbon fiber and second reinforcement was epoxy reinforced with hybrid reinforcements Kevlar fiber and improved one was the three laminates Kevlar fiber and chopped carbon fibers reinforced epoxy resin. After preparation of composite materials some of the mechanical properties have been studied. Four different fiber loading, i.e., 0 wt. %, 20wt. % CCF, 20wt. % SKF, AND 20wt. %CCF + 20wt. % SKF were taken for evaluating the above said properties. The thermal and mechanical properties, i.e., hardness load, impact strength, flexural strength (bending load), and thermal conductivity are determined to represent the behaviour of composite structures with that of fibers loading. The results show that with the increase in fiber loading the mechanical properties of carbon fiber reinforced epoxy composites increases as compared to short carbon fiber reinforced epoxy composites except in case of hardness, short carbon fiber reinforced composites shows better results. Similarly, flexural strength test, Impact test, and Brinell hardness test the results show the flexural strength, impact strength of the hybrid composites values were increased with existence of Kevlar fibers, while the hardness was decrease. But the reinforcement with carbon fibers increases the hardness and decreases other tests.

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Kim, Jin Bong, Sang Kwan Lee, and Chun Gon Kim. "Comparison of Carbon-Based Nano Materials as Conductive Fillers for Single Layer Microwave Absorber." Key Engineering Materials 334-335 (March 2007): 837–40. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.837.

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In this paper, we have studied the permittivities of E-glass fabric/epoxy composite laminates containing three different types of carbon-based nano conductive fillers such as carbon black (CB), carbon nano fiber (CNF) and multi-wall carbon nano tube (MWNT). The measurements were performed for permittivities at the frequency band of 0.5 GHz ~ 18.0 GHz using a vector network analyzer with a 7 mm coaxial air line. The experimental results show that the complex permittivities of the composites depend strongly on the natures and concentrations of the conductive fillers. The real and imaginary parts of the complex permittivities of the composites were proportional to the filler concentrations. But, depending on the types of fillers and frequency band, the increasing rates of the real and imaginary parts with respect to the filler concentrations were all different. At the frequency of 10 GHz, the rates in the CNF filled composite and the MWNT filled composite were much larger then those of the CB filled composite. Between the CNF filled composite and MWNT filled composite, however, the former showed a little higher increasing rates than the other. These different rates can have great effect on the thickness in designing the single layer microwave absorbers. The effect of the different rates was examined by using Cole-Cole plots; the plot is composed of a single layer absorber solution line and permittivity lines of these three types of composites.

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11

Xie, Yingmei, Hiroki Kurita, Ryugo Ishigami, and Fumio Narita. "Assessing the Flexural Properties of Epoxy Composites with Extremely Low Addition of Cellulose Nanofiber Content." Applied Sciences 10, no. 3 (February 9, 2020): 1159. http://dx.doi.org/10.3390/app10031159.

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Epoxy resins are a widely used common polymer due to their excellent mechanical properties. On the other hand, cellulose nanofiber (CNF) is one of the new generation of fibers, and recent test results show that CNF reinforced polymers have high mechanical properties. It has also been reported that an extremely low CNF addition increases the mechanical properties of the matrix resin. In this study, we prepared extremely-low CNF (~1 wt.%) reinforced epoxy resin matrix (epoxy-CNF) composites, and tried to understand the strengthening mechanism of the epoxy-CNF composite through the three-point flexural test, finite element analysis (FEA), and discussion based on organic chemistry. The flexural modulus and strength were significantly increased by the extremely low CNF addition (less than 0.2 wt.%), although the theories for short-fiber-reinforced composites cannot explain the strengthening mechanism of the epoxy-CNF composite. Hence, we propose the possibility that CNF behaves as an auxiliary agent to enhance the structure of the epoxy molecule, and not as a reinforcing fiber in the epoxy resin matrix.

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12

Pandurangan, Mohan Turup, and Krishnan Kanny. "Study of Curing Characteristics of Cellulose Nanofiber-Filled Epoxy Nanocomposites." Catalysts 10, no. 8 (July 24, 2020): 831. http://dx.doi.org/10.3390/catal10080831.

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In recent years, much attention was focused on developing green materials and fillers for polymer composites. This work is about the development of such green nanofiller for reinforcement in epoxy polymer matrix. A cellulose nanofiber (CNF)-filled epoxy polymer nanocomposites was prepared in this work. The effect of CNF on curing, thermal, mechanical, and barrier properties of epoxy polymer is evaluated in this study. CNF were extracted from banana fiber using acid hydrolysis method and then filled in epoxy polymer at various concentration (0–5 wt.%) to form CNF-filled epoxy nanocomposites. The structure and morphology of the CNF-filled epoxy nanocomposites were examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis. Curing studies shows CNF particles acts as a catalytic curing agent with increased cross-link density. This catalytic effect of CNF particles has positively affected tensile, thermal (thermogravimetry analysis and dynamic mechanical analysis) and water barrier properties. Water uptake test of nanocomposites was studied to understand the barrier properties. Overall result also shows that the CNF can be a potential green nanofiller for thermoset epoxy polymer with promising applications ahead.

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Ekhtiyari, Amin, Mahmood M. Shokrieh, and René Alderliesten. "Loading rate effects on mode-I delamination in glass/epoxy and glass/CNF/epoxy laminated composites." Engineering Fracture Mechanics 228 (April 2020): 106908. http://dx.doi.org/10.1016/j.engfracmech.2020.106908.

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Saurabh, Chaturbhuj K., Asniza Mustapha, M. Mohd Masri, A. F. Owolabi, M. I. Syakir, Rudi Dungani, M. T. Paridah, M. Jawaid, and H. P. S. Abdul Khalil. "Isolation and Characterization of Cellulose Nanofibers fromGigantochloa scortechiniias a Reinforcement Material." Journal of Nanomaterials 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/4024527.

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Cellulose nanofibers (CNF) were isolated fromGigantochloa scortechiniibamboo fibers using sulphuric acid hydrolysis. This method was compared with pulping and bleaching process for bamboo fiber. Scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and thermogravimetric analysis were used to determine the properties of CNF. Structural analysis by FT-IR showed that lignin and hemicelluloses were effectively removed from pulp, bleached fibers, and CNF. It was found that CNF exhibited uniform and smooth morphological structures, with fiber diameter ranges from 5 to 10 nm. The percentage of crystallinity was significantly increased from raw fibers to cellulose nanofibers, microfibrillated, along with significant improvement in thermal stability. Further, obtained CNF were used as reinforcement material in epoxy based nanocomposites where tensile strength, flexural strength, and modulus of nanocomposites improved with the addition of CNF loading concentration ranges from 0 to 0.7%.

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Dando, Kerrick R., and David R. Salem. "Nano-additive reinforcement of mixture epoxy syntactic foams." Journal of Thermoplastic Composite Materials 33, no. 12 (April 1, 2019): 1674–91. http://dx.doi.org/10.1177/0892705719835282.

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Carbon nanofibers (CNFs) and halloysite nanotubes (HNTs) were incorporated in syntactic foams containing a 90% by volume homogeneous mixture of (20/80 wt%) glass/thermoplastic microballoons to enhance the mechanical and impact response properties. Tensile, compressive, and impact tests were employed to comparatively characterize the effect of nano-additive reinforcement on mechanical response properties. Compressive strength and modulus enhancements as large as 39% and 18%, respectively, were achieved with a 0.125 wt% addition of CNF and increases of 61% and 7%, respectively, were achieved with a 0.125 wt% addition of HNT. Tensile strength and modulus enhancements as large as 107% and 68%, respectively, were achieved with a 0.125 wt% addition of CNF and increases of 104% and 70%, respectively, were achieved with a 0.125 wt% addition of HNT. Impact analysis data were used to show that measured peak force increased and build-up time to peak force decreased with increasing CNF or HNT weight percentage due to stiffening of the matrix. The smallest increase observed in peak force was 20% for a 0.125 wt% addition of CNF and 17% for a 0.125 wt% addition of HNT.

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McDonald, Erin E., Landon F. Wallace, Gregory J. S. Hickman, and Kuang-Ting Hsiao. "Manufacturing and Shear Response Characterization of Carbon Nanofiber Modified CFRP Using the Out-of-Autoclave-Vacuum-Bag-Only Cure Process." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/830295.

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The interlaminar shear response is studied for carbon nanofiber (CNF) modified out-of-autoclave-vacuum-bag-only (OOA-VBO) carbon fiber reinforced plastic (CFRP). Commercial OOA-VBO prepregs were coated with a CNF modified epoxy solution and a control epoxy solution without CNF to make CNF modified samples and control samples, respectively. Tensile testingwas used to study the in-plane shear performance of [±45°]4scomposite laminates. Significant difference in failure modes between the control and CNF modified CFRPs was identified. The control samples experienced half-plane interlaminar delamination, whereas the CNF modified samples experienced a localized failure in the intralaminar region. Digital image correlation (DIC) surface strain results of the control sample showed no further surface strain increase along the delaminated section when the sample was further elongated prior to sample failure. On the other hand, the DIC results of the CNF modified sample showed that the surface strain increased relatively and uniformly across the CFRP as the sample was further elongated until sample failure. The failure mode evidence along with microscope pictures indicated that the CNF modification acted as a beneficial reinforcement inhibiting interlaminar delamination.

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Popov, Maxim V., Sergey V. Zazhigalov, Tatyana V. Larina, Svetlana V. Cherepanova, Alexander G. Bannov, Sergey A. Lopatin, and Andrey N. Zagoruiko. "Glass fiber supports modified by layers of silica and carbon nanofibers." Catalysis for Sustainable Energy 4, no. 1 (April 1, 2017): 1–6. http://dx.doi.org/10.1515/cse-2017-0001.

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AbstractThe new multi-layered composite was manufactured by deposition of the carbon nanofibers (CNF) at the surface of the glass-fiber fabric, which is pre-modified by application of additional external layers of NiO and porous silica. Carbonization of synthesized catalytic template was performed at 450 °C in propanebutane media at ambient pressure. CNF was deposited in amount of ~130% of initial template mass or 65 g per g of nickel, the specific surface area of the material is ~100 m

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Karahan, Mehmet, and Nevin Karahan. "Investigation of Damage Properties of Woven Carbon-Epoxy Composites Modified with CNT Fillers." Journal of Nanotechnology in Diagnosis and Treatment 8 (June 24, 2022): 1–9. http://dx.doi.org/10.12974/2311-8792.2022.08.1.

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CNT/CNF grafting at high amount causes a CNT forest around the fiber and this causes significant limitations in composite material production. Due to increased distance between the fibers, local fiber volume fraction decreases within the yarns. Fiber volume fraction was found to decrease by 2.7–6.2% according to CNT/CNF ratio. The results revealed that there were significant decreases in mechanical properties and characteristic strain values where damage initiation and progression of the composite samples produced from carbon nanotubes grown on fabrics. It was found that Young’s modulus values decreased by 15–17%. Characteristic strain values where damage threshold decreased by 36–53%. It was concluded that decreased local fiber volume fraction and low fiber-matrix interface bonding were the main cause for this situation. Moreover, it is believed that the one of the most important factor that might cause these limitations is lack of adequate wetting of fiber surfaces and low fiber-matrix interface bonding.

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Yang, Hongda, Qingguo Chen, Xinyu Wang, Minghe Chi, and Jinfeng Zhang. "Dielectric and Thermal Conductivity Characteristics of Epoxy Resin-Impregnated H-BN/CNF-Modified Insulating Paper." Polymers 12, no. 9 (September 13, 2020): 2080. http://dx.doi.org/10.3390/polym12092080.

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High-voltage direct-current (HVDC) dry bushing capacitor-core insulation is composed of epoxy resin-impregnated insulating paper (RIP). To improve the thermal conductivity, breakdown strength, and space charge characteristics of RIP, 0.1 wt % nano-cellulose fiber (CNF)-modified RIP (CNF/RIP), 2.5–30 wt % hexagonal boron nitride (h-BN)-modified RIP (h-BN/RIP), and 2.5–30 wt % h-BN + 0.1 wt % CNF-modified RIP (h-BN + 0.1 wt % CNF/RIP) were prepared. Scanning electron microscopy (SEM) was implemented; the thermal conductivity, DC conductivity, DC breakdown strength, and space charge characteristics were tested. The maximum thermal conductivity of h-BN + 0.1 wt % CNF/RIP was 0.376 W/m.K with a h-BN content of 30 wt %. The thermal conductivity was 85.2% higher than that of unmodified RIP. The breakdown strength and charge suppression were the best in the case of 10 wt % h-BN + 0.1 wt % CNF/RIP. The maximum breakdown strength was 11.2% higher than that of unmodified RIP. These results can play a significant role in the research and development of insulation materials for HVDC dry bushing.

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Nallusamy, S., and N. Manikanda Prabu. "Synthesis and Characterization of Carbon Nanofiber with Reinforced Polymer Resin Matrix Composite." Nano Hybrids 10 (May 2016): 20–27. http://dx.doi.org/10.4028/www.scientific.net/nh.10.20.

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Polymer composite with reinforced fiber is a remarkable development in the field of engineering materials. The applications of composite materials have significantly increased in Defense, Aeronautical and Automobiles because of its specific modulus and high strength characteristics. In composite material development, nano particles reinforcement and nano fiber reinforcement are the most recent methods developed. In this research electrospun carbon nanofiber reinforced mat with polymer epoxy resin composites was prepared. X-ray diffraction, scanning electron microscope and ultrasonic scanning were used to study the morphology and the defect on the specimens for analyzing the structural conditions of the samples for determining the mechanical properties. The result clearly indicates that the Carbon Nanofiber (CNF)/ Polyvinyl Alcohol (PVA) mat improves the flexural strength of the epoxy resin and that 0.015% CNF in PVA gives a better mechanical strength.

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Sarim, Ali, Bo Ming Zhang, and Chang Chun Wang. "Mechanical Enhancement of Carbon Fiber/Epoxy Composites Based on Carbon Nano Fibers by Using Spraying Methodology." Applied Mechanics and Materials 245 (December 2012): 203–8. http://dx.doi.org/10.4028/www.scientific.net/amm.245.203.

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Carbon nanofibers have been utilized increasingly for enhancing the mechanical properties of advanced polymer composites, which include high strength, stiffness, toughness, and through-thickness Properties. The incorporation of nano particles with a high aspect ratio and extremely large surface area into polymers improves their mechanical properties significantly. Although a number of efforts have been made to improve various properties by mixing nano particles directly into resin, however, it could lead to high viscosities which create problems during processing. In this particular study, an attempt has been made to enhance mechanical response of nano composites by using, state of the art, a different technique i.e spraying the Carbon Nano Fibers (CNF) on dry perform before infusion. The nano composite samples were prepared using a spraying methodology i.e dispersing the 1.0 weight percent CNF solution on carbon fabric, and evaporating the solvent such that only nano fibers remain on perform, followed by Vacuum assisted resin transfer molding (VARTM). Tensile, compression, flexural and short beam strength tests were performed to evaluate the effectiveness of CNF addition on the mechanical properties of carbon / epoxy composites. Results indicated, CNF addition offered simultaneous increase in all these mechanical properties in different percentages i.e 22–28 percent improvement in tensile strength, 7-11 percent in compressive strength, 14–19 percent in Flexural strength and 45-55 percent short beam strength with respect to the neat composite. The rise in their modulus has also been discussed in detail and part of this study. For in-depth analysis, Microscopic approaches were also carried out to investigate the fracture behavior and mechanism of material. Scanning electron microscopy of fractured surfaces revealed improved primary fiber–matrix adhesion and indications of CNF-induced matrix toughening.

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Wan Dalina, Wan Ahmad Dahalan, M. Mariatti, Radziana Ramlee, Zainal Arifin Mohd Ishak, and Abdul Rahman Mohamed. "Comparison on the Properties of Glass Fiber/MWCNT/Epoxy and Carbon Fiber/MWCNT/Epoxy Composites." Advanced Materials Research 858 (November 2013): 32–39. http://dx.doi.org/10.4028/www.scientific.net/amr.858.32.

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A hand lay-up and vacuum bagging method was used in this study to fabricate glass fiber/epoxy laminated composites and carbon fiber/epoxy composite laminates with multi-walled carbon nanotube (MWCNT). The density, flexural properties, and burning rate of the laminated composites incorporated with different concentration of MWCNT (0.5, 1.0, and 1.5 vol%) were investigated and analyzed. Trend in the density, flexural and burning rate of glass fiber composite laminates were compared to those of carbon fiber composite laminates. Effect of MWCNT concentration on glass fiber composites properties varies from carbon fiber composite laminates. Incorporation of 0.5vol% of MWCNT has increased flexural strength by 54.4% compared to 5-ply glass fiber composite laminates. Nonetheless addition of 1vol% of MWCNT has only increased flexural strength by 34% compared to 5-ply carbon fiber laminated composites. Incorporation of MWCNT has successfully reduced the burning rate of the glass fiber composites as well as the carbon fiber laminated composites.

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Radulović, Jovan. "Hybrid filament-wound materials: Tensile characteristics of (aramide fiber/glass fiber)-epoxy resins composite and (carbon fibers/glass fiber)-epoxy resins composites." Scientific Technical Review 70, no. 1 (2020): 36–46. http://dx.doi.org/10.5937/str2001036r.

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In this paper a tensile characteristics of filament-wound glass fiber-aramid fiber/epoxy resins hybrid composites and glass fiber-two carbons fibers/epoxy resins hybrid composites are presented. Basic terms about hybride composite materials (origin, reasons for manufacturing, advantages, definitions, levels of hybridization, modes of classifications, types, categorization, and possible interactions between constituents) and used reinforcements and matrices are described. For a manufacturing of NOL rings four reinforcements (glass fiber, polyamide aromatic fiber and two carbon fibers) and two matrices (high and moderate temperature curing epoxy resin system) are used. Based on experimentally obtained results, it is concluded that hybride composite material consisting of carbon fiber T800 (67 % vol) and glass fiber GR600 (33 % vol) impregnated with epoxy resin system L20 has the highest both the tensile strength value and the specific tensile strength value. The two lowest values of both tensile strength and the specific tensile strength have hybrid material containing aramide fiber K49 (33 % vol) and glass fiber GR600 (67 % vol) and epoxy resin system 0164 and hybrid NOL ring with wound carbon fiber T300 (33 % vol) and glass fiber GR600 (67 % vol) impregnated with the same epoxy resin system. This investigation pointed out that increasing the volume content of aramide fiberK49, carbon fiber T300 and carbon fiber T800 in appropriate hybrid composites with glass fiber GR600 increases both the tensile strength value and the specific tensile strength value and decrease the density value, no matter the used epoxy resin system.

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Hari Ram, K., and R. Edwin Raj. "Synthesis and Mechanical Characterization of Sisal-Epoxy and Hybrid-Epoxy Composites in Comparison with Conventional Fiber Glass-Epoxy Composite." Advanced Materials Research 984-985 (July 2014): 285–90. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.285.

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Polymer composites reinforced with natural fibers have been developed in recent years, showing significant potential for various engineering applications due to their inherent sustainability, low cost, light weight and comparable mechanical strength. Sisal is a natural fiber extracted from leaves of Agave Sisalana plants and substituted for natural glass fiber. Six different combinations of specimens were prepared with sisal, sisal-glass and glass fibers with epoxy as matrix at two different fiber orientation of 0-90° and ±45°. Mechanical characterization such as tensile, flexural and impact testing were done to analyze their mechanical strength. It is found that the hybrid composite sisal-glass-epoxy has better and comparable mechanical properties with conventional glass-epoxy composite and thus provides a viable, sustainable alternate polymer composite.

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Thirunavukarasu, Devendran, Yoshinobu Shimamura, Keiichiro Tohgo, and Tomoyuki Fujii. "Mechanical Characterization on Solvent Treated Cellulose Nanofiber Preforms Using Solution Dipping–Hot Press Technique." Nanomaterials 10, no. 5 (April 29, 2020): 841. http://dx.doi.org/10.3390/nano10050841.

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Nanocomposites films were prepared by impregnating the solvent treated cellulose nanofiber (SCNF) preforms with epoxy resin using a solution dipping–hot press technique. We investigated the effect of SCNF preforms porosity on the amount of impregnated resin and tensile properties of the corresponding nanocomposites films. The porosity of the CNF preforms was successfully controlled using the solvent exchange with varying CNF concentration. The impregnated resin amount increased as the SCNF preforms porosity increased, respectively. Resulting nanocomposite films showed higher mechanical properties than that of the SCNF preforms. The best mechanical properties of composites were found with the combination of 1 wt % SCNF preform and low viscosity epoxy, exhibiting tensile strength and Young’s modulus of 77 MPa and 4.8 GPa, respectively. The composite also showed high fiber volume fraction of more than 60%.

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Sun, B. A., K. P. Cheung, J. T. Fan, J. Lu, and W. H. Wang. "Fiber metallic glass laminates." Journal of Materials Research 25, no. 12 (December 2010): 2287–91. http://dx.doi.org/10.1557/jmr.2010.0291.

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The fabrication and properties of fiber metallic glass laminates (FMGL) composite composed of Al-based metallic glasses ribbons and fiber/epoxy layers were reported. The metallic glass composite possesses structural features of low density and high specific strength compared to Al-based metallic glass and crystalline Al alloys. The material shows pronounced tensile ductility compared to monolithic bulk metallic glasses.

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Ballout, Y. A., S. K. Hovis, and J. E. Talia. "Erosion in glass-fiber reinforced epoxy composite." Scripta Metallurgica et Materialia 24, no. 1 (January 1990): 195–200. http://dx.doi.org/10.1016/0956-716x(90)90591-4.

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Abdellah, Mohammed Y., Mohamed K. Hassan, Ahmed F. Mohamed, and Ahmed H. Backar. "Cyclic Relaxation, Impact Properties and Fracture Toughness of Carbon and Glass Fiber Reinforced Composite Laminates." Materials 14, no. 23 (December 3, 2021): 7412. http://dx.doi.org/10.3390/ma14237412.

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In this paper, the mechanical properties of fiber-reinforced epoxy laminates are experimentally tested. The relaxation behavior of carbon and glass fiber composite laminates is investigated at room temperature. In addition, the impact strength under drop-weight loading is measured. The hand lay-up technique is used to fabricate composite laminates with woven 8-ply carbon and glass fiber reinforced epoxy. Tensile tests, cyclic relaxation tests and drop weight impacts are carried out on the carbon and glass fiber-reinforced epoxy laminates. The surface release energy GIC and the related fracture toughness KIC are important characteristic properties and are therefore measured experimentally using a standard test on centre-cracked specimens. The results show that carbon fiber-reinforced epoxy laminates with high tensile strength give high cyclic relaxation performance, better than the specimens with glass fiber composite laminates. This is due to the higher strength and stiffness of carbon fiber-reinforced epoxy with 600 MPa compared to glass fiber-reinforced epoxy with 200 MPa. While glass fibers show better impact behavior than carbon fibers at impact energies between 1.9 and 2.7 J, this is due to the large amount of epoxy resin in the case of glass fiber composite laminates, while the impact behavior is different at impact energies between 2.7 and 3.4 J. The fracture toughness KIC is measured to be 192 and 31 MPa √m and the surface energy GIC is measured to be 540.6 and 31.1 kJ/m2 for carbon and glass fiber-reinforced epoxy laminates, respectively.

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Asadi, Amir, Ferdinand Baaij, Robert J. Moon, Tequila AL Harris, and Kyriaki Kalaitzidou. "Lightweight alternatives to glass fiber/epoxy sheet molding compound composites: A feasibility study." Journal of Composite Materials 53, no. 14 (December 11, 2018): 1985–2000. http://dx.doi.org/10.1177/0021998318817814.

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The focus of this study is to (i) understand the effect of the fiber type and content on the mechanical properties of sheet-molding compounds composites and (ii) investigate possible lightweight alternatives to glass fibers-sheet molding compound composites. Glass fiber and basalt fibers are used to make sheet-molding compound composites and the mechanical performance are determined as a function of the fiber type and content. In addition, cellulose nanocrystals are used to enhance the properties of the sheet-molding compound resin system. The possibility of lightweighting the basalt fiber/epoxy and glass fiber/epoxy sheet-molding compound composites is explored by replacing a portion of the fibers, i.e. 12–16 wt%, with a small amount cellulose nanocrystals, i.e. 1–2 wt%. No significant difference was found between the basalt fiber/epoxy and glass fiber/epoxy sheet-molding compound composites in terms of mechanical and impact properties. When cellulose nanocrystals were added to the composites, the properties of glass fiber/epoxy sheet-molding compound composites were enhanced while those of basalt fiber/epoxy sheet-molding compound composites deteriorated.

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Sathish, S., T. Ganapathy, and Thiyagarajan Bhoopathy. "Experimental Testing on Hybrid Composite Materials." Applied Mechanics and Materials 592-594 (July 2014): 339–43. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.339.

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In recent trend, the most used fiber reinforced composite is the glass fiber composite. The glass-fiber composites have high strength and mechanical properties but it is costlier than sisal and jute fiber. Though the availability of the sisal and jute fiber is more, it cannot be used for high strength applications. A high strength-low cost fiber may serve the purpose. This project focuses on the experimental testing of hybrid composite materials. The hybrid composite materials are manufactured using three different fibers - sisal, glass and jute with epoxy resin with weight ratio of fiber to resin as 30:70. Four combinations of composite materials viz., sisal-epoxy, jute-epoxy, sisal-glass-epoxy and sisal-jute-epoxy are manufactured to the ASTM (American Society for Testing and Materials) standards. The specimens are tested for their mechanical properties such as tensile and impact strength in Universal Testing machine. The results are compared with that of the individual properties of the glass fiber, sisal fiber, jute fiber composite and improvements in the strength-weight ratio and mechanical properties are studied.

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Severin, Irina, Rochdi El Abdi, Guillaume Corvec, and Mihai Caramihai. "Optical Fiber Embedded in Epoxy Glass Unidirectional Fiber Composite System." Materials 7, no. 1 (December 20, 2013): 44–57. http://dx.doi.org/10.3390/ma7010044.

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Reddy, D. Madhava, C. H. Rakesh, N. Karthikeyan, M. Ashok Kumar, and G. Nagaraju. "Utilization of Wallostonite/Quasi Isotropic S2 Glass Fiber Doped in to Epoxy on Mechanical and Thermal Properties." International Letters of Chemistry, Physics and Astronomy 40 (October 2014): 24–35. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.40.24.

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Study focused on the performance of injection moulded short Wallostonite filler and chopped glass fiber reinforced hybrid epoxy composites. Results showed that hybridization of glass fiber and Wallostonite was found to be comparable to that of epoxy glass fiber composites. Analysis of fiber length distribution in the composite and fracture surface was performed to study fiber breakage fracture mechanism. The simultaneous compounding of epoxy with two fillers was done to obtain a hybrid composite. The mechanical properties of hybrid, injection molded, chopped glass fiber/ Wallostonite/epoxy composites have been investigated by considering the effect of hybridization by these two fillers. This system is expected to have considerable mechanical properties. It has been found that the tensile, flexural, and impact properties of the filled epoxy were higher than those of unfilled epoxy. The hybrid effects of the tensile strength and modulus were studied by the rule of hybrid mixtures (RoHM) using the values of single fiber composites.

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Reddy, D. Madhava, C. H. Rakesh, N. Karthikeyan, M. Ashok Kumar, and G. Nagaraju. "Utilization of Wallostonite/Quasi Isotropic S2 Glass Fiber Doped in to Epoxy on Mechanical and Thermal Properties." International Letters of Chemistry, Physics and Astronomy 40 (October 23, 2014): 24–35. http://dx.doi.org/10.56431/p-24av6e.

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Study focused on the performance of injection moulded short Wallostonite filler and chopped glass fiber reinforced hybrid epoxy composites. Results showed that hybridization of glass fiber and Wallostonite was found to be comparable to that of epoxy glass fiber composites. Analysis of fiber length distribution in the composite and fracture surface was performed to study fiber breakage fracture mechanism. The simultaneous compounding of epoxy with two fillers was done to obtain a hybrid composite. The mechanical properties of hybrid, injection molded, chopped glass fiber/ Wallostonite/epoxy composites have been investigated by considering the effect of hybridization by these two fillers. This system is expected to have considerable mechanical properties. It has been found that the tensile, flexural, and impact properties of the filled epoxy were higher than those of unfilled epoxy. The hybrid effects of the tensile strength and modulus were studied by the rule of hybrid mixtures (RoHM) using the values of single fiber composites.

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Radulović, Jovan. "Hybrid filament wound composite tubes (aramide fiber/glass fiber)-epoxy resins and (carbon fibers/glass fiber)-epoxy resins: Volumetric, mechanical and hydraulic characteristics." Scientific Technical Review 72, no. 1 (2022): 33–41. http://dx.doi.org/10.5937/str2201033r.

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In this paper volumetric, mechanical and hydraulic characteristics of filament wound composite one fiber tubes and hybrid tubes are presented. Composite hybrid materials, produced by filament winding technology, are categorized according to different ways of classification of hybrid materials. Four fibrous reinforcement agents (glass G600, polyamide aromatic K49, carbon T300 and carbon T800) and two impregnation agent systems (epoxy 0164 and epoxy L20) are used for manufacturing of filament wound tubes. Density, tensile strength, specific tensile strength, hydraulic burst pressure and specific hydraulic burst pressure of two filament wound glass fiber/epoxy resins tubes (as starting materials) and of twelve filament wound hybrid tubes are investigated. Four highest values of tensile strength and hydraulic burst pressure are of the next schedule: hybrid tubes mark G600-T800/L20 (the highest), hybrid tubes mark G600-T800/0164, hybrid tubes mark G600-T300/L20 and hybrid tubes mark G600-K49/L20. Also, a row of four highest specific tensile strength and highest specific hydraulic burst pressure begins with hybrid tubes mark G600-T800/L20, but the schedule of the next three tubes is different due to density of aramide composite materials (hybrid tubes mark G600-K49/L20, hybrid tubes mark G600-T800/0164 and hybrid tubes mark G600-K49/0164). All filament wound tubes (single fiber tubes and hybrid tubes) with epoxy L20 have a slightly lower density value but higher values of tensile strength, specific tensile strength, hydraulic burst pressure and specific hydraulic burst pressure than appropriate tubes impregnated with epoxy 0164. Obtained results in this testing indicate and emphasize the importance of advanced reinforcing agents (aramide roving and carbon fibers), of impregnating agents (epoxy resin systems) and of the density of hybrid tubes, especially with aramide roving.

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Singer, Gerald, Harald Rennhofer, Gerhard Sinn, Miriam M. Unterlass, Josef Wendrinsky, Ursula Windberger, and Helga C. Lichtenegger. "Processing of Carbon Nanotubes and Carbon Nanofibers towards High Performance Carbon Fiber Reinforced Polymers." Key Engineering Materials 742 (July 2017): 31–37. http://dx.doi.org/10.4028/www.scientific.net/kem.742.31.

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Carbon fiber reinforced polymers (CFRPs) are promising composite materials for high-performance and lightweight applications, gaining increasing interest in aerospace and automotive industries. Epoxy thermosets are frequently used as polymer matrices of CFRPs, which are usually responsible for failure of the composite. In this work different types of carbon nanotubes (CNTs) and carbon nanofibers (CNF) are added to the epoxy resin to improve mechanical properties of the whole CFRP composite. The dispersion of the fillers on a three-roll mill (TRM) is shown comparing their dispersion behavior in the resin. Results of increased modulus and strength of the hierarchical composite in four-point bending tests are presented.

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Lamberti, Patrizia, Giuseppina Barra, Liberata Guadagno, Khalid Lafdi, Carlo Naddeo, Marialuigia Raimondo, Giovanni Spinelli, Vincenzo Tucci, and Luigi Vertuccio. "Electrical characterization of aeronautical nanocomposites supported by Tunneling AFM (TUNA)." MATEC Web of Conferences 233 (2018): 00023. http://dx.doi.org/10.1051/matecconf/201823300023.

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Epoxy nanocomposites fulfill tight and compelling industrial requirements in the field of structural material for aeronautical applications. In this paper the development and characterization of nanocomposites obtained by filling tetrafunctional epoxy resin (tetraglycidyl methylene dianiline cured with the aromatic diamine 4,4’-diaminodiphenylsulfone, named T20BD) with carbon nanofibers (CNF) is discussed. A filler amount ranging from 0.05% to 2%wt is considered. The DC volume conductivity and the dielectric characteristics (ϵ’) of the nanocomposites in the frequency range 100Hz-1MHz are analyzed and compared with those of the pure resin. Atomic force microscopy, mapping the local topography by means of tunneling effect, is used for recording the electrical percolation path for nanocomposites. In particular, the case 1.3wt% of CNF filled nanocomposites that exhibits a stable behavior of the conductivity in the full investigated frequency range, is here reported. The developed filled epoxy used in carbon fiber reinforced composites, shows enhanced electrical properties leading to better electromagnetic (EM) performances in EM coatings, EM shields and filters or radar absorber materials (RAMs).

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Yang, Bo, Yanyun Mao, Yihui Zhang, Yi Wei, Wanshuang Liu, and Yiping Qiu. "Fast-curing halogen-free flame-retardant epoxy resins and their application in glass fiber-reinforced composites." Textile Research Journal 89, no. 18 (December 19, 2018): 3700–3707. http://dx.doi.org/10.1177/0040517518819845.

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A series of novel fast-curing halogen-free flame-retardant epoxy resins were formulated and used to prepare glass fiber-reinforced composites. Dynamic mechanical analysis showed that the optimized epoxy system could be completely cured in 0.5 h at 150℃ and had a glass transition temperature ( Tg) of above 130℃. The optimized epoxy system was also used as matrix resin to make glass fiber prepregs and composite panels. The flame-retardant properties of the glass fiber-reinforced composites were investigated, including the limiting oxygen index (LOI) and flaming, smoke and toxicity properties. The glass fiber-reinforced composite had good flame retardancy with a UL-94 V-1 rating and high LOI of ∼36%. More significantly, the composite based on the flame-retardant epoxy resin showed lower smoke density compared with those based on phenolic resins. Finally, the glass fiber prepregs were used to fabricate honeycomb sandwich composites. The peel strength of the epoxy-based composites was almost twice that of the composites based on phenolic resin.

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M.P., Jenarthanan, Karthikeyan Marappan, and Giridharan R. "Evaluation of mechanical properties of e-glass and aloe vera fiber reinforced with polyester and epoxy resin matrices." Pigment & Resin Technology 48, no. 3 (May 7, 2019): 243–48. http://dx.doi.org/10.1108/prt-03-2018-0027.

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Purpose The need for seeking alternate materials with increased performance in the field of composites revived this research, to prepare and evaluate the mechanical properties of e-glass and aloe vera fiber-reinforced with polyester and epoxy resin matrices. Design/methodology/approach The composites are prepared by hand layup method using E-glass and aloe vera fibers with length 5-6 mm. The resin used in the preparation of composites was epoxy and polyester. Fiber-reinforced composites were synthesized at 18:82 fiber–resin weight percentages. Samples prepared were tested to evaluate its mechanical and physical properties, such as tensile strength, flexural strength, impact strength, hardness and scanning electron microscope (SEM). Findings SEM analysis revealed the morphological features. E-glass fiber-reinforced epoxy composite exhibited better mechanical properties than other composite samples. The cross-linking density of monomers of the epoxy resin and addition of the short chopped E-glass fibers enhanced the properties of E-glass epoxy fiber-reinforced composite. Originality/value This research work enlists the properties of e-glass and aloe vera fiber-reinforced with polyester and epoxy resin matrices which has not been attempted so far.

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Selmy, A. I., A. R. Elsesi, N. A. Azab, and M. A. Abd El-baky. "Monotonic properties of unidirectional glass fiber (U)/random glass fiber (R)/epoxy hybrid composites." Materials & Design 32, no. 2 (February 2011): 743–49. http://dx.doi.org/10.1016/j.matdes.2010.07.031.

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Fathy, A., A. Shaker, M. Abdel Hamid, and AA Megahed. "The effects of nano-silica/nano-alumina on fatigue behavior of glass fiber-reinforced epoxy composites." Journal of Composite Materials 51, no. 12 (July 28, 2016): 1667–79. http://dx.doi.org/10.1177/0021998316661870.

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This paper presents an experimental and statistical study of the fatigue behavior of unidirectional glass fiber-reinforced epoxy composite rods manufactured using pultrusion technique and modified with nanoparticles of alumina (Al2O3) and silica (SiO2) at four different weight fractions (0.5, 1.0, 2.0 and 3.0 wt.%). Tensile test was performed to investigate the influence of nanoparticles. Addition of alumina nanoparticles up to 3 wt.% increases the tensile strength by 54.76% over the pure glass fiber-reinforced epoxy specimen. For silica nanoparticles, there is an increase in the tensile strength of 31.29% for the content of 0.5 wt.% over the pure glass fiber-reinforced epoxy specimen. As the silica nanoparticles’ content increases over 0.5 wt.%, there is a decrease in the tensile strength. Rotating bending fatigue tests have been conducted at five different stress levels. Fatigue life of glass fiber-reinforced epoxy composite rods modified with alumina nanoparticles increases as the content of the nanoparticles increases. The effect of adding silica nanoparticles on the fatigue life of glass fiber-reinforced epoxy composite rods is relatively insignificant with a small improvement in the content of 0.5 wt.% silica above the pure glass fiber-reinforced epoxy specimens. Two-parameter Weibull distribution function was used to statistically analyze the fatigue life data.

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Vagdevi, Krishna. "Experimental Test on Carbon Fiber/Epoxy and Glass Fiber /Epoxy Pultruded Rods for Mechanical Properties." IOSR Journal of Mechanical and Civil Engineering 8, no. 5 (2013): 56–61. http://dx.doi.org/10.9790/1684-0855661.

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Tsai, Jia Lin, Jui Ching Kuo, and Shin Ming Hsu. "Fabrication and Mechanical Properties of Glass Fiber/Epoxy Nanocomposites." Materials Science Forum 505-507 (January 2006): 37–42. http://dx.doi.org/10.4028/www.scientific.net/msf.505-507.37.

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This research is aimed to fabricate glass fiber/epoxy nanocomposites containing organoclay as well as to understand the organoclay effect on the in-plane shear strength of the nanocomposites. To demonstrate the organoclay effect, three different loadings of organoclay, were dispersed in the epoxy resin using mechanical mixer followed by sonication. The corresponding glass/epoxy nanocomposites were prepared by impregnating the organoclay epoxy mixture into the dry glass fiber through a vacuum hand lay-up process. Off-axis block glass/epoxy nanocomposites were tested in compression to produce in-plane shear failure. It is noted only the specimens showing in-plane shear failure mode were concerned in this study. Through coordinate transformation law, the uniaxial failure stresses were then converted to a plot of shear stress versus transverse normal stress from which the in-plane shear strength was obtained. Experimental results showed that the fiber/epoxy nanocomposite exhibit higher in-plane shear strength than the conventional composites. This increased property could be ascribed to the enhanced fiber/matrix adhesion promoted by the organoclay.

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Kim, Eric S., Dryver R. Huston, and Patrick C. Lee. "Interlaminar prestressing reinforcement of epoxy/glass fiber composites." Smart Materials and Structures 28, no. 2 (December 20, 2018): 025006. http://dx.doi.org/10.1088/1361-665x/aaefcd.

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Zhen, Hong, Wang Xiang, Xie Xiao-Lin, Li Zhi-Peng, and Wan Li-Ying. "Study on Glass Fiber/Epoxy Gradient Damping Composites." Asian Journal of Chemistry 25, no. 7 (2013): 3831–34. http://dx.doi.org/10.14233/ajchem.2013.13807.

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Vazquez, A., M. Ambrustolo, S. M. Moschiar, M. M. Reboredo, and J. F. Gérard. "Interphase modification in unidirectional glass-fiber epoxy composites." Composites Science and Technology 58, no. 3-4 (March 1998): 549–58. http://dx.doi.org/10.1016/s0266-3538(97)00172-3.

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Noori, F. T. Mohammed, H. I. Jafar, and N. A. Abas. "Study Torsion Capacity of Epoxy -Glass Fiber Composites." Journal of Al-Nahrain University Science 14, no. 1 (March 1, 2011): 109–14. http://dx.doi.org/10.22401/jnus.14.1.13.

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Hwang, Hui Yun. "Electromechanical characteristics of unidirectional glass fiber epoxy composites." Polymer Composites 32, no. 4 (April 2011): 558–64. http://dx.doi.org/10.1002/pc.21076.

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Liao, Y. T. "A study of glass fiber-epoxy composite interfaces." Polymer Composites 10, no. 6 (December 1989): 424–28. http://dx.doi.org/10.1002/pc.750100606.

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Toldy, Andrea, Gábor Szebényi, Kolos Molnár, Levente Tóth, Balázs Magyar, Viktor Hliva, Tibor Czigány, and Beáta Szolnoki. "The Effect of Multilevel Carbon Reinforcements on the Fire Performance, Conductivity, and Mechanical Properties of Epoxy Composites." Polymers 11, no. 2 (February 12, 2019): 303. http://dx.doi.org/10.3390/polym11020303.

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We studied the effect of a multilevel presence of carbon-based reinforcements—a combination of conventional load-bearing unidirectional carbon fiber (CF) with multiwalled carbon nanotubes (CNT) and conductive CNT-containing nonwoven carbon nanofabric (CNF(CNT))—on the fire performance, thermal conductivity, and mechanical properties of reference and flame-retarded epoxy resin (EP) composites. The inclusion of carbon fibers and flame retardant reduced the peak heat release rate (pHRR) of the epoxy resins. The extent to which the nanoreinforcements reduced the pHRR depended on their influence on thermal conductivity. Specifically, high thermal conductivity is advantageous at the early stages of degradation, but after ignition it may lead to more intensive degradation and a higher pHRR; especially in the reference samples without flame retardant. The lowest pHRR (130 kW/m2) and self-extinguishing V-0 UL-94 rating was achieved in the flame-retarded composite containing all three levels of carbon reinforcement (EP + CNF(CNT) + CNT + CF FR). The plasticizing effect of the liquid flame retardant impaired both the tensile and flexural properties; however, it significantly enhanced the impact resistance of the epoxy resin and its composites.

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Doğan, Nurettin Furkan, Özkan Özbek, and Ahmet Erkliğ. "Effect of graphene nanoplatelets on mechanical and impact properties of an aramid/glass-reinforced epoxy composite." Materials Testing 64, no. 4 (April 1, 2022): 490–501. http://dx.doi.org/10.1515/mt-2021-2064.

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Abstract This study aims to characterize and evaluate the effects of graphene nanoplatelets (GnPs) added to the epoxy matrix and the fiber stacking sequence on the mechanical and impact responses of carbon/aramid hybrid composites. For this purpose, Aramid/Glass/Aramid and Glass/Aramid/Glass stacking sequences as well as full Aramid and Glass fiber configurations were used in an epoxy matrix with various contents (0.1, 0.25, 0.5 wt%) of GnPs. Tensile and flexural tests were conducted per mechanical characterization and low-velocity impact (LVI) tests with 30 J impact energy were performed by a drop-weight impact test. According to results, aramid fiber location has a significant effect on the peak load values, absorbed energy, and displacement of the hybrid composites. In addition, the inclusion of 0.25 wt% GnPs into the epoxy matrix increased the LVI properties of pure glass and hybrid fiber-reinforced composites. However, the incorporation of GnPs into the epoxy matrix caused a deterioration in the LVI properties of the aramid fiber-reinforced composite plates. Moreover, the best increase in the mechanical properties of pure and hybrid fiber-reinforced composites was obtained by adding 0.1 and 0.25% wt% GnPs into the epoxy matrix.

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Journal articles on the topic 'CNF/Epoxy Glass Fiber'

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