Relevant bibliographies by topics / Aramid fibre

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Aramid fibre'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Aramid fibre"

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Wang, Binhua, Guangzhi Ding, Gang Wang, and Sisi Kang. "Effects of resin pre-coating on interfacial bond strength and toughness of laminar CFRP with and without short aramid fibre toughening." Journal of Composite Materials 54, no. 25 (May 1, 2020): 3883–93. http://dx.doi.org/10.1177/0021998320923391.

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The brittle adhesive layer in carbon fiber-reinforced polymer (CFRP) laminates was strengthened by using short aramid fibers in this study. To ensure the feasibility and effectiveness of short aramid fiber interfacial toughening at the interface between the carbon-fiber face sheets, the self-prepared short aramid fibre tissue and the wettability treatment technology with resin pre-coating were applied to enable short aramid fibres to be well embedded in the uneven regions in the CFRP fabrics with fibres oriented at 0° and 90° to form a strong pulling resistance. The ultimate load and the mode I interlaminar fracture toughness have been improved by 75% and 103.9% from the double cantilever beam mode I crack propagation tests, respectively. The reinforcing mechanisms within the “composite adhesive layer” as a result of short aramid fibres are discussed together with detailed scanning electron microscopy observations and comparison test results.
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Wang, Peng. "Research on the Design and Use of Structures and Components Made from Fibre Composite Materials." Applied Mechanics and Materials 174-177 (May 2012): 782–86. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.782.

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Fibres composite materials designed as glass fibre, carbon fibre and aramid fibre. They were used for chemical resistance, compressive strength, stiffness, impact resistance, and fire resistance. However, they had a number of limitations, including vandalism, accidental damage, short-term durability, high cost, and suitably qualified staff shortage. These problems could be solved by appropriate monitoring, suitably qualified designers and contractors. The design and use of fibre composite materials has become an important aspect of engineering.
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Wiśniewski, Damian, Mieczysław Słowik, Jan Kempa, Agnieszka Lewandowska, and Joanna Malinowska. "Assessment of Impact of Aramid Fibre Addition on the Mechanical Properties of Selected Asphalt Mixtures." Materials 13, no. 15 (July 24, 2020): 3302. http://dx.doi.org/10.3390/ma13153302.

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Various additives to asphalt binders and asphalt mixtures improving their properties are being used more and more frequently in order to improve the durability of road pavements. Such additives include various types of fibres, including aramid fibres. Tests concerning the impact of aramid fibre addition on the properties of selected asphalt mixtures have been described herein. Two types of asphalt mixtures were assessed: high modulus asphalt concrete (HMAC) and stone mastic asphalt (SMA). The examined asphalt mixtures were assessed with regard to: resistance to rutting, resistance to water and frost as well as fatigue resistance. The conducted tests showed relatively small impact of aramid fibre addition on the improvement of some assessed properties of the analysed asphalt mixtures. The obtained results were also compared to results of the tests conducted by the other research team concerning the impact of aramid fibre addition on the properties of the other types of asphalt mixtures.
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McKay, K. S., and M. A. Erki. "Grouted anchorages for aramid fibre reinforced plastic prestressing tendons." Canadian Journal of Civil Engineering 20, no. 6 (December 1, 1993): 1065–69. http://dx.doi.org/10.1139/l93-137.

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Nonmetallic prestressing tendons, made of fibre-reinforced composite materials, are being proposed as alternatives to steel prestressing tendons for bridges and parking garage structures, where corrosion is the leading cause of structural deterioration. One type of commercially available nonmetallic tendons is made of pultruded aramid fibres. One of the main problems for these tendons, which is common to all nonmetallic tendons, is that the high ratio of the axial to lateral strength of fibre-reinforced materials requires special attention to the type of anchorage used. For the aramid tendon, the simplest grouted anchorage consists of a steel tube filled with nonshrink grout, into which the end of the tendon is embedded. This note presents the test results of a parametric study on grouted anchorages for pultruded aramid tendons. Key words: prestressed concrete, nonmetallic tendons, aramid fibre, grouted anchorage.
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Klein, N., and G. Marom. "Surface Induced Crystallization in Fibre Reinforced Nylon 6,6 Composites." Advanced Composites Letters 1, no. 4 (July 1992): 096369359200100. http://dx.doi.org/10.1177/096369359200100401.

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The present study deals with the growth of transcrystalline layer in Nylon 6,6 reinforced with HM pitch based carbon or aramid fibres. The kinetics of transcrystalline growth is investigated quantitatively. The surface energy parameters that are derived here, can be used to define a better criterion for the nucleation of transcrystallinity from the fibre surface. The free energy difference function, Δσ, as it appears in the classical theory of heterogeneous nucleation is calculated for both aramid and HM carbon fibres.
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Sharmila, S., and P. Chandrasekaran. "Performance evaluation of high performance concrete beams under cyclic loading." International Journal of Engineering & Technology 7, no. 1.1 (December 21, 2017): 71. http://dx.doi.org/10.14419/ijet.v7i1.1.8926.

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High performance concrete essentially consists of the same ingredients as in conventional concrete but the proportions are designed to provide the strength and durability which are needed for the structural and environmental requirements of the structure. Fiber-reinforced concrete is a concrete containing ingredients of conventional concrete and fibres which increases its structural integrity. Fibers act as crack arrester which are primarily due to plastic shrinkage and drying shrinkage. They also reduce the permeability of concrete. The main aim of the present experimental investigation is to combine different fibres namely crimped stainless steel fibre and Aramid fibre to produce HFRC and thus to evaluate its mechanical performance. In Addition Micro silica and Quartz powder is added to obtain high performance. Based on I.S. Code method of mix design, proportion of different ingredients was obtained to get M60 grade concrete. Samples were prepared by varying the volume fraction of Steelfibre and aramid fibre from 0 to 1.5%. Three specimens of Cubes, Cylinders, and Prisms for each volume fraction of fibers are casted. Mechanical properties of each concrete composite were studied. The structural parameters such as load carrying capacity, ductility characteristics and energy absorption capacity of HPHFRC beams were assessed.
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Zhang, Sufeng, Meiyun Zhang, and Kecheng Li. "Adhesion force between aramid fibre and aramid fibrid by AFM." Polymer Bulletin 66, no. 3 (July 11, 2010): 351–62. http://dx.doi.org/10.1007/s00289-010-0335-5.

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Liu, Sinan, Tao Yang, Chang Liu, and Yu Du. "Comprehensive investigation of cutting mechanisms and hole quality in dry drilling woven aramid fibre–reinforced plastic with typical tools." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 233, no. 14 (April 24, 2019): 2471–91. http://dx.doi.org/10.1177/0954405419844855.

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Due to high specific strength and strong toughness, aramid fibre–reinforced plastics have been widely used in the aircraft, military, and automobile industries. However, in the hole-making process, these excellent properties make aramid fibre–reinforced plastics difficult to machine and prone to severe entrance and exit damages. In this article, the cutting mechanisms of three typical tools (twist drill, burr tool, and brad drill) are thoroughly investigated during dry drilling of aramid fibre–reinforced plastic. On this basis, systematic experiments are conducted to evaluate the cutting performance and hole quality. At the hole entrance, the cutting edges of the twist drill peel and tear the uncut material, which results in severe fuzzing damage. Due to the radial rake angles of the burr tool and brad drill, the radial component of the cutting force can pre-tension aramid fibres prior to being cut, which effectively reduces the fuzzing defect. At the hole exit, the extrusion action of the chisel edge and the severe chip adherence are the main causes of exit damage for the twist drill and burr tool, respectively. Due to the decrease in the thrust force and improvement in the shearing action, the best hole quality is achieved by the brad drill. To further improve the hole quality, an auxiliary approach using collars is introduced to effectively restrain the damage by enhancing interfacial bonding strength. This article provides comprehensive and available information on tool performance for drilling aramid fibre–reinforced plastics, which can help guide process optimizations to achieve the desired hole quality.
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Andrews, M. C., and R. J. Young. "Fragmentation of aramid fibres in single-fibre model composites." Journal of Materials Science 30, no. 22 (November 1995): 5607–16. http://dx.doi.org/10.1007/bf00356693.

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Harel, H., J. Aronhime, K. Schulte, K. Friedrich, and G. Marom. "Rate-dependent fatigue of aramid-fibre/carbon-fibre hybrids." Journal of Materials Science 25, no. 2 (February 1990): 1313–17. http://dx.doi.org/10.1007/bf00585442.

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Dissertations / Theses on the topic "Aramid fibre"

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Fallatah, Gasem M. "Long-term behaviour of aramid fibre." Thesis, University of Newcastle Upon Tyne, 2006. http://hdl.handle.net/10443/958.

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An investigation of the creep rupture of Kevlar@ 29, Twaron@ 1000, and Technora T2000 aramid fibre yams was carried out in the temperature range 25-120T in air and three other environments (Saudi/Iranian crude oil, pure water, and low pH water) at 65T with the objective of characterising the long term failure behaviour of these fibres and determine if they can be used to replace the stress rupture test conducted on RTP for qualification purposes. The standard loglo-loglo ISO 9080 extrapolation procedure, the modified lin-logio ISO 9080 extrapolation procedure and the time temperature superposition method were used to model and interpret the results. When tested in air, the different yams showed similar but not identical regression parameters. The results of the standard logio-logio ISO 9080 and the modified lin-logio methods correlated well. The standard logio-logio form, however, gave slightly higher values for the 20 year mean stress and LPL. Its use is recommended because it is consistent with the model assumed in the regression of RTP. There was no evidence of any 'knee' in the relationships after long periods or at high temperatures. This suggests that there is no change in failure mechanism, and lends confidence to both the long term use of aramid fibre in air and the recommended qualification procedures. RTP regression curve constants and those of tested aramid fibre were similar indicating the validity of aramid fibre stress rupture tests as a replacement for RTP tests. Crude oil immersion produced a small but significant reduction in behaviour. At 650C a suitable crude oil reduction factor applied to the long ten-n LPL would be 0.9. Pure water produces a marked reduction in strength after short periods, at 65C. Finally, water of low pH resulted in a large reduction in performance and considerable scatter with one fibre type. With the other, the effect appeared to be similar to that of pure water. Based on the understanding of the failure mechanism and the creep process in aramid fibres, a creep strain model is proposed for estimating the strain to failure based on the material's properties.
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Williams, Daryl Robert. "Interfacial interactions in aramid fibre composites." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46607.

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Leung, Hau Yan. "Aramid fibre spirals to confine concrete in compression." Thesis, University of Cambridge, 2000. https://www.repository.cam.ac.uk/handle/1810/272300.

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Lees, J. M. "Flexure of concrete beams pre-tensioned with aramid FRPs." Thesis, University of Cambridge, 1997. https://www.repository.cam.ac.uk/handle/1810/273030.

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Arjyal, Bishwambhar Prasad. "In-situ stress/strain measurements in composites using an aramid fibre as sensor." Thesis, Queen Mary, University of London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298789.

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Jayarajah, James Nirmal. "Coalescence and filtration of emulsions using fibres." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343600.

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Wormann, Thomas Verfasser], Martin [Akademischer Betreuer] Möller, and Andrij Z. [Akademischer Betreuer] [Pich. "Interphase modification and characterisation in p-aramid/ glass fibre epoxy model composites / Thomas Wormann ; Martin Möller, Andrij Pich." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130326748/34.

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Wormann, Thomas [Verfasser], Martin Akademischer Betreuer] Möller, and Andrij Z. [Akademischer Betreuer] [Pich. "Interphase modification and characterisation in p-aramid/ glass fibre epoxy model composites / Thomas Wormann ; Martin Möller, Andrij Pich." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130326748/34.

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Wormann, Thomas [Verfasser], Martin [Akademischer Betreuer] Möller, and Andrij Z. [Akademischer Betreuer] Pich. "Interphase modification and characterisation in p-aramid/ glass fibre epoxy model composites / Thomas Wormann ; Martin Möller, Andrij Pich." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://nbn-resolving.de/urn:nbn:de:hbz:82-rwth-2016-019749.

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Marriner-Edwards, Cassian. "The development of fibre-reinforced ceramic matrix composites of oxide ceramic electrolyte." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:3af11d08-c0d8-429b-8eab-d2befc83ea74.

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Flammable solvents contained in liquid electrolytes pose a serious safety risk when used in lithium batteries. Oxide ceramic electrolytes are a safer alternative, but suffer from inadequate mechanical properties and ionic conductivity. Thin electrolyte layers resolve the issue of conductance, but accentuate the detrimental mechanical properties of oxide ceramics. The presented work has investigated oxide ceramic electrolyte reinforcement in composite electrolytes for all-solid-state batteries. Fabricating oxide ceramic electrolytes with engineered microstructure enabled development of a reinforced composite. This approach is based on the formation of 3D- porous ceramics via stereolithography printing of polymer templates from designed cubic, gyroid, diamond and bijel architectures. The microstructural parameters of templates were analysed and modified using computational techniques. Infiltration of the prepared 3D-porous electrolyte with polymeric-fibre reinforcement created the reinforced composite electrolyte. The prepared ceramic composite showed excellent reproduction of the template microstructure, good retention of ionic conductivity and enhanced mechanical properties. The final composite was composed of NASICON-type Li1.6Al0.6Ge1.4(PO4)3 oxide ceramic electrolyte and epoxy and aramid fibre reinforcement. The gyroid architecture was computationally determined as having the optimal stress transfer efficiency between two phases. The printed gyroid polymer template gave excellent pore microstructure reproduction in ceramic that had 3D-interconnected porosity, high relative density and the most uniform thickness distribution. The ceramic matrix porosity allowed for complete infiltration of reinforcement by aramid and epoxy forming the fibre-reinforced ceramic matrix composite. The interpenetrating composite microstructure with ceramic and epoxy gave a flexural strength increase of 45.65 MPa compared to the ceramic. Unfortunately, the infiltration procedure of aramid-epoxy reinforcement did not realise the full tensile strength potential of aramid fibres.
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Books on the topic "Aramid fibre"

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Yang, H. H. Kevlar aramid fiber. Chichester: J. Wiley, 1993.

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United States International Trade Commission. Aramid fiber formed of poly para-phenylene terephthalamide from the Netherlands. Washington, DC: U.S. International Trade Commission, 1994.

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Commission, United States International Trade. Aramid fiber formed of poly para-phenylene terephthalamide from the Netherlands. Washington, DC: U.S. International Trade Commission, 1993.

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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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Mercx, F. P. M. Surface modification of high-performance aramid and polyethylene fibres for improved adhesive bonding to epoxy resins. Eindhoven: Eindhoven University of Technology, 1996.

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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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Legends of the fire spirits: Jinn and genies from Arabia to Zanzibar. London: I.B. Tauris, 2010.

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Lebling, Robert W. Legends of the fire spirits: Jinns and genies from Arabia to Zanzibar. Berkeley, CA: Counterpoint, 2010.

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Mrabet, Mohammed. The boy who set the fire & other stories. San Francisco: City Lights Books, 1988.

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Setting the desert on fire: T.E. Lawrence and Britain's secret war in Arabia, 1916-18. London: Bloomsbury, 2006.

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Book chapters on the topic "Aramid fibre"

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Lovell, Donald R. "Aramid Fibre & Fabric." In Carbon and High Performance Fibres Directory and Databook, 237–64. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0695-5_9.

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Alnadish, Adham, and Yusri Aman. "Evaluation of Aramid Fibre-Reinforced Asphalt Mixtures." In GCEC 2017, 1377–88. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8016-6_99.

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Gooch, Jan W. "Aramid Fiber." In Encyclopedic Dictionary of Polymers, 46. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_772.

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Northolt, M. G., J. H. Kampschreur, and S. van der Zwaag. "Viscoelasticity of Aramid Fibres." In Integration of Fundamental Polymer Science and Technology—3, 157–67. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1115-4_18.

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Northolt, M. G. "The Similarity Between Cellulose and Aramid Fibres." In Integration of Fundamental Polymer Science and Technology, 567–72. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4185-4_70.

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Sharma, Chinmaya, and Shiv Ranjan Kumar. "Erosion Analysis of Aramid Fiber–Epoxy Composite." In Lecture Notes in Mechanical Engineering, 469–74. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6469-3_43.

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Northolt, M. "The Structure and Properties of Aramid Fibres." In Developments in the Science and Technology of Composite Materials, 3–4. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1123-9_1.

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Saunders, C. B., A. Singh, V. J. Lopata, S. Seier, G. D. Boyer, W. Kremers, and V. A. Mason. "Electron-Beam Curing of Aramid-Fiber-Reinforced Composites." In ACS Symposium Series, 251–61. Washington, DC: American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0475.ch015.

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Morozova, E. M., T. C. Jalich, E. L. Ergunova, M. V. Safonov, and V. A. Ogarev. "Aramid and Carbonhydrate Fiber Surface Modification by Polymerizing Composites." In MICC 90, 234–37. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3676-1_33.

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Helgee, B., and C. H. Andersson. "Preparation and Mechanical Properties of Aramid Fibres from Block Copolymers." In Developments in the Science and Technology of Composite Materials, 555–60. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0787-4_77.

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Conference papers on the topic "Aramid fibre"

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Davies, Peter, Patrice Baron, Karine Salomon, Charles Bideaud, J. P. Labbe´, Ste´phane Toumit, Michel Francois, Francois Grosjean, Tony Bunsell, and A. G. Moysan. "Influence of Fibre Stiffness on Deepwater Mooring Line Response." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57147.

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Polyester fibre ropes are now an accepted solution for deepwater mooring of production platforms and a single high tenacity fibre grade is widely used. Few studies of other fibres have been reported but polyesters can be produced with a range of properties by varying drawing parameters, and other stiffer fibres are also available. This paper presents a study of these alternative fibre rope solutions, performed within the French Mooring Line project. First, in order to obtain the input data necessary for mooring line analyses an extensive test program was performed to characterize polyester, improved polyester, PEN, LCP, aramid and HMPE fibre ropes from yarns up to 800 ton break load ropes. Tests at different scales have allowed property transfer to be quantified. Rope modelling has been used in parallel to examine the influence of material and structural parameters. Then, using these data, a series of analyses was run by engineering contractors, which quantified the benefits of higher stiffness for different supports (semi-submersible, production platform and offloading buoy) down to 2500 meter depth. Under certain conditions the stiffer ropes can result in significantly reduced rope diameter and weight.
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Ramar, Kumarasubramanian, Karthikeyan Paramasivam, Yuvaraja Subramani, Jayaprabakar Jayaraman, R. S. Shivashankaran, and D. S. Deivanayagam. "Design and analysis of composite leaf spring using aramid fibre." In 3RD INTERNATIONAL CONFERENCE ON FRONTIERS IN AUTOMOBILE AND MECHANICAL ENGINEERING (FAME 2020). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0034421.

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Koňáková, D., M. Čáchová, K. Polozhiy, E. Vejmelková, M. Keppert, and R. Černý. "The high temperature resistance of a para-aramid fibre-reinforced concrete composite." In HPSM/OPTI 2014. Southampton, UK: WIT Press, 2014. http://dx.doi.org/10.2495/hpsm140181.

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Grzeschik, Marc. "Performance of Foldcores Mechanical Properties and Testing." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13324.

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Foldcores are folded open cellular structures which are currently under development at Institute of Aircraft Design (IFB). The IFB has generated an integrated manufacturing process to produce foldcores, starting with the mathematical methods to design the required foldcore geometry to the point of realizing them in an automated and continuous fashion. By isometric folding of planar base materials foldcores can and have already been manufactured out of a large variety of materials: cardboard, papers, metals (aluminum, steel, titanium), different thermoplastic films (PC, PVC, PPSU, PEEK) as well as advanced fibre reinforced materials (glass, carbon, aramid fibres). For the technical use of foldcores in sandwich structures it is necessary to supply a competitive level of mechanical performance. We discuss the mechanical properties of foldcores compared to other state of the art core materials. We detail the testing methods used to determine compression and shear strengths and stiffnesses, which are based upon international standards. Evaluation of the test results show potential for the use of foldcores in high performance lightweight structures, especially considering their unique multifunctional applicability.
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Ueda, Takahisa, Akio Otani, Asami Nakai, and Hiroyuki Hamada. "Mechanical Properties of Square Braided Fabric." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-39476.

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Cyclic compression test was performed on square braided fabric and the effects of the type of fiber bundle were examined for aramid and glass square braided fabrics. Moreover, the strength of the fiber bundles from the square braided fabric after cyclic compression loading was investigated with tensile testing of fiber bundles. It was found that the strength of the glass fiber bundle was decreased with the increase of compression cycle, whereas the strength of aramid fiber bundle was not decreased. The decrease in strength of glass fiber bundle caused an increase in cumulative deformation with compression cycle.
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Demircan, O., Y. Hamada, T. Kosui, A. Nakai, and H. Hamada. "Bending Properties and Finite Element Modeling of Biaxial Weft Knitted Composites." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87151.

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In order to improve the mechanical properties of weft knitted fabric, straight yarns both in weft and warp directions can be integrated. These types of reinforcements are called biaxial weft knitted structures. Finite element analysis is a well known method for analysis of complex construction with complex material properties. Therefore, we wanted to use FEM to express the possibility of prediction of bending properties of complex biaxial weft knitted (BWK) composite structures. The purpose of this study is to investigate bending properties of BWK composites by experimentally and numerically. Two types of six plies composite panels, which include fiber contents, such as glass-glass-aramid and aramid-aramid-aramid, were fabricated by hand lay-up method. After production of composites, bending tests had been conducted on specimens. Glass-glass-aramid composites exhibited superior bending property than aramid-aramid-aramid specimens. The good agreement between the experimental results and numerical results validated the applicability of finite-element method for biaxial weft knitted composites.
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Derombise, Guillaume, Laetitia Van Schoors, Peter Davies, and Loic Dussud. "Durability of Aramid Ropes in a Marine Environment." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57199.

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This paper presents first results from a study of the long term marine durability of aramid fibers. The program was started based on the experience of IFREMER using aramid fiber ropes for instrumentation and deep sea handling lines, which is described here. Instrumentation lines showed no degradation after recovery, but results from testing of handling ropes after service indicated significant strength reduction. This led to the development of specific test facilities to study bend-over-sheave performance. The overall aim is to improve understanding of the roles of both the fiber and the rope construction in a marine environment, in order to improve long term strength retention of aramid marine ropes.
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Ruggiero, Eric J. "Influence of Friction on the Blow-Down Behavior of an Aramid Fiber Brush Seal." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69329.

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Aramid fiber brush seals are ultra-low leakage, compliant sealing elements for turbomachinery applications. Such seals are applicable in the Aviation, Energy, and Oil and Gas markets as either air-air seals or air-oil seals. In the present study, the influence of friction present between the front plate and upstream side of the bristle pack of an aramid fiber brush seal is experimentally investigated. With the bristle pack fully exposed on the upstream side of the seal, the bristles are shown to blow down and create a better seal compared to the same brush seal with a front plate installed.
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9

Ruggiero, Eric J., Jason Allen, and Mark Lusted. "Experimental Testing Techniques for Kevlar® Fiber Brush Seals." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-60172.

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Non-metallic brush seals, and more specifically, Kevlar® (aramid) fiber brush seals, are an emerging sealing technology in low-pressure, low temperature applications. Compared to metallic brush seals, aramid fibers are an order of magnitude smaller in diameter and consequently offer much tighter sealing capability. Further, their compliant nature requires minimal pressure drops across the seal to encourage blow-down of the bristle pack onto the rotor during operation. Similarly, their compliant nature also enables the bristle pack to correct for alignment issues and to recover from radial growth transients of the rotor. Proper design of the bristle pack stiffness is critical to the successful operation of the seal. If the seal is designed to be too soft, frictional forces prohibit the recovery of the bristle pack if pressed away from the rotor. Conversely, if designed too stiffly, then the heat generation at the sliding interface of the seal accelerates the degradation of the seal. The goal of the present paper is to present the experimental techniques developed to guide the design of aramid fiber brush seals. Two experimental test methodologies will be presented: a direct stiffness measurement and a heat generation measurement. Both testing procedures have been used to successfully design seals for various GE turbomachinery products.
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10

Hull, Frazier, Jett Gambill, Andrew Hansche, Gian Agni, John Evangelista, Celia Powell, Margaret Auerbach, Joel Dillon, and O¨zer Arnas. "Engineering an Undergarment for Flash/Flame Protection." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63888.

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This paper presents a continuation of projects spanning the last two years. In year one, the physical characteristics and medical effects of burns and Improvised Explosive Device, IED, blasts were investigated [1]. In year two, the possible use of commercial intumescent materials with fabric was studied [2]. The identified needs for research into the effect of undergarments on burn protection are focused in this study. Additionally, Thermal Protective Performance, TPP-(ISO 17492) and Air Permeability, AP-(ASTM D737) tests were performed to gather the data needed for the analysis of flame and thermal resistance as well as comfort and breathability. Out of the seven samples evaluated, the Sample D, composed of 94% m-aramid, 5% p-aramid and 1% static dissipative fiber, shirt had the best overall performance in terms of air permeability, average TPP rating, and time to second degree burn. Another finding was that polyester undershirts may be dangerous in the event of a flash fire situation because the fabric could melt and stick to the Soldier’s skin causing more severe burn injury. Additionally, an initial framework for a basic mathematical model representing the system was created. This model can be further refined to yield more accurate results and eventually be used to help predict the material properties required in fabrics to design a more protective undergarment.
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Reports on the topic "Aramid fibre"

1

Kydd, George H., and Joan C. Marano-Goyco. Fire Tests of Advanced Aramid Blends and Treatments. Fort Belvoir, VA: Defense Technical Information Center, December 1987. http://dx.doi.org/10.21236/ada197512.

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2

Donnellan, M. E., J. Cook, and C. Skowronek. Evaluation of ARALL-4: An Aramid Fiber Reinforced Aluminum. Fort Belvoir, VA: Defense Technical Information Center, September 1989. http://dx.doi.org/10.21236/ada223502.

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