Relevant bibliographies by topics / Fiber Reinforced Plastics (FRPs)

Academic literature on the topic 'Fiber Reinforced Plastics (FRPs)'

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Published: 6 September 2023

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Journal articles on the topic "Fiber Reinforced Plastics (FRPs)"

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Ashir, Moniruddoza, Andreas Nocke, and Chokri Cherif. "Adaptive fiber-reinforced plastics based on open reed weaving and tailored fiber placement technology." Textile Research Journal 90, no. 9-10 (October 23, 2019): 981–90. http://dx.doi.org/10.1177/0040517519884578.

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The textile-technical integration of shape memory alloys into reinforcing fabrics for the development of adaptive fiber-reinforced plastics (FRPs) has been developed in recent years. This is aimed at reproduction, automation, and series production as well as reduced delamination of shape memory alloys in FRPs, and higher force transmission from shape memory alloys to FRPs. This type of integration can be executed in several ways, for example, by weaving or by tailored fiber placement technology. We present a comparative study of the functional properties of adaptive FRPs based on both types of technology. In order to conduct this study, functionalized reinforcing fabrics for the formation of adaptive FRPs were produced by open reed weaving and tailored fiber placement technology. Subsequently, they were infused by means of a thermosetting resin system. After the fabrication of adaptive FRPs, their functional properties were characterized and evaluated. Results show that the maximum deformation of adaptive FRPs produced by open reed weaving technology was higher than those produced by tailored fiber placement technology. Therefore, the adaptive FRPs produced by open reed weaving technology are more suitable for the formation of grippers, aerodynamically effective flaps, or robotic hands than that of adaptive FRPs produced by tailored fiber placement technology.
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Ashir, Moniruddoza, Andreas Nocke, and Chokri Cherif. "Effect of the Position of Defined Local Defect on the Mechanical Performance of Carbon-Fiber-Reinforced Plastics." Autex Research Journal 19, no. 1 (March 1, 2019): 74–79. http://dx.doi.org/10.1515/aut-2018-0034.

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Abstract Considering their energy and resource efficiency, fiber-reinforced plastics (FRPs) have been displacing metals and metal alloys for lightweight constructions. During the semiautomated manufacturing process of FRPs, and in particular during the laying of reinforced fabric layers, foreign bodies are enclosed within them, which in turn reduce the mechanical performance of FRPs. The research project presented in this article investigated if the loss in mechanical properties, such as tensile, flexural, and impact strengths, depends on the position of defined local defects, polytetrafluorethylene (PTFE) in this case, in the thickness direction of FRPs. In order to achieve this aim, PTFE was placed in different layers of reinforcing fabric before infusion. Subsequently, the mechanical performance of the fabricated FRPs was tested and evaluated. On the basis of the experiment, it can be concluded that the loss in mechanical properties was maximal if PTFE was laid in the middle position of FRPs in the thickness direction.
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Dhawan, Vikas, Sehijpal Singh, and Inderdeep Singh. "Effect of Natural Fillers on Mechanical Properties of GFRP Composites." Journal of Composites 2013 (July 8, 2013): 1–8. http://dx.doi.org/10.1155/2013/792620.

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Fiber reinforced plastics (FRPs) have replaced conventional engineering materials in many areas, especially in the field of automobiles and household applications. With the increasing demand, various modifications are being incorporated in the conventional FRPs for specific applications in order to reduce costs and achieve the quality standards. The present research endeavor is an attempt to study the effect of natural fillers on the mechanical characteristics of FRPs. Rice husk, wheat husk, and coconut coir have been used as natural fillers in glass fiber reinforced plastics (GFRPs). In order to study the effect of matrix on the properties of GFRPs, polyester and epoxy resins have been used. It has been found that natural fillers provide better results in polyester-based composites. Amongst the natural fillers, in general, the composites with coconut coir have better mechanical properties as compared to the other fillers in glass/epoxy composites.
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Scaffaro, Roberto, Alberto Di Bartolo, and Nadka Tz Dintcheva. "Matrix and Filler Recycling of Carbon and Glass Fiber-Reinforced Polymer Composites: A Review." Polymers 13, no. 21 (November 4, 2021): 3817. http://dx.doi.org/10.3390/polym13213817.

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Fiber-reinforced polymers (FRPs) are low-density, high-performance composite materials, which find important applications in the automotive, aerospace, and energy industry, to only cite a few. With the increasing concerns about sustainability and environment risks, the problem of the recycling of such complex composite systems has been emerging in politics, industry, and academia. The issue is exacerbated by the increased use of FRPs in the automotive industry and by the expected decommissioning of airplanes and wind turbines amounting to thousands of metric tons of composite materials. Currently, the recycling of FRPs downcycles the entire composite to some form of reinforcement material (typically for cements) or degrades the polymer matrix to recover the fibers. Following the principles of sustainability, the reuse and recycling of the whole composite—fiber and polymer—should be promoted. In this review paper, we report on recent research works that achieve the recycling of both the fiber and matrix phase of FRP composites, with the polymer being either directly recovered or converted to value-added monomers and oligomers.
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Bang, Junsik, Hyunju Lee, Yemi Yang, Jung-Kwon Oh, and Hyo Won Kwak. "Nano/Micro Hybrid Bamboo Fibrous Preforms for Robust Biodegradable Fiber Reinforced Plastics." Polymers 13, no. 4 (February 20, 2021): 636. http://dx.doi.org/10.3390/polym13040636.

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The focus on high-strength and functional natural fiber-based composite materials is growing as interest in developing eco-friendly plastics and sustainable materials increases. An eco-friendly fibrous composite with excellent mechanical properties was prepared by applying the bamboo-derived nano and microfiber multiscale hybridization phenomenon. As a result, the cellulose nanofibers simultaneously coated the micro-bamboo fiber surface and adhered between them. The multiscale hybrid phenomenon implemented between bamboo nano and microfibers improved the tensile strength, elongation, Young’s modulus, and toughness of the fibrous composite. The enhancement of the fibrous preform mechanical properties also affected the reinforcement of biodegradable fiber-reinforced plastic (FRP). This eco-friendly nano/micro fibrous preform can be extensively utilized in reinforced preforms for FRPs and other green plastic industry applications.
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Harugade, Mukund, Sachin Waigaonkar, and Nandkishor Dhawale. "A novel approach for removal of delaminated fibers of a reinforced composites using electrochemical discharge machining." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 235, no. 12 (May 5, 2021): 1949–60. http://dx.doi.org/10.1177/09544054211014483.

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Fiber reinforced composites, also referred as fiber reinforced plastics (FRPs) have gained considerable importance in engineering applications due to their unique qualities like high strength and stiffness at lesser weight, chemical inertness, thermal resistance, corrosion resistance, and electrical resistance. Though the machining of FRPs is not recommended, many times it is inevitable and the primary machining process like drilling is essential. This can cause delamination of the fibers thereby adversely affecting the mechanical properties of the composite and requires additional secondary finishing operation. The present investigation explores electrochemical discharge machining (ECDM) as a one of the novel technique to remove the delaminated fibers from such composites. Using ECDM the protruded delaminated fibers from a drilled hole in FRP have been precisely eliminated. Two different approaches viz. top machining and inside machining were followed for this purpose. Process evaluation was done in terms of its ability to remove the delaminated fibers and the extent of thermal damage (heat affected zone and hole overcut) to the workpiece. Both approaches have shown considerable potential of removal of delaminated fibers precisely.
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Jokūbaitis, Aidas, and Juozas Valivonis. "An Analysis of the Transfer Lengths of Different Types of Prestressed Fiber-Reinforced Polymer Reinforcement." Polymers 14, no. 19 (September 20, 2022): 3931. http://dx.doi.org/10.3390/polym14193931.

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The main aim of this paper is to provide a broader analysis of the transfer lengths of different types of fiber-reinforced polymers (FRPs) and to provide corrections to the existing theoretical models. Therefore, this paper presents a description of the main factors that influence the transfer lengths of different types of FRPs based on experimental results found in the literature. A database of more than 300 specimens was compiled with the results of the transfer lengths of different FRPs and the main influencing parameters. The analysis of the database results showed that the transfer length of the carbon fiber composite cable (CFCC) strands depends on the type of prestressed reinforcement release. Therefore, in this article, the new coefficient αt = 2.4 is proposed for the transfer length of suddenly released CFCC strands. Additionally, the transfer length of the aramid fiber reinforced polymer (AFRP) depends on its surface conditions. Therefore, new coefficients αt = 1.5 and αt = 4.0 are also proposed for the transfer lengths of smooth braided and sanded and rough AFRP bars, respectively. Furthermore, the proposed coefficients αt = 2.6, αt = 1.9, and αt = 4.8 found in the literature were validated with the analysis of a larger database of the transfer lengths of glass fiber-reinforced polymer (GFRP) bars, carbon fiber-reinforced polymer (CFRP) bars, and gradually released CFCC strands, respectively. Moreover, the main existing theoretical models are presented, and the comparison of theoretical and experimental transfer length results is discussed. However, the low number of specimens prestressed with basalt fiber-reinforced polymer (BFRP) bars prevented the deeper analysis of the results. the analysis of the transfer length and the proposed new values of the coefficient αt provides possibilities for adapting it to design codes for engineering applications and performing additional research that fills the missing gaps in the field.
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Bafakeeh, Omar Talal, Walid Mahmoud Shewakh, Ahmed Abu-Oqail, Walaa Abd-Elaziem, Metwally Abdel Ghafaar, and Mohamed Abu-Okail. "Synthesis and Characterization of Hybrid Fiber-Reinforced Polymer by Adding Ceramic Nanoparticles for Aeronautical Structural Applications." Polymers 13, no. 23 (November 26, 2021): 4116. http://dx.doi.org/10.3390/polym13234116.

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The multiscale hybridization of ceramic nanoparticles incorporated into polymer matrices reinforced with hybrid fibers offers a new opportunity to develop high-performance, multifunctional composites, especially for applications in aeronautical structures. In this study, two different kinds of hybrid fibers were selected, woven carbon and glass fiber, while two different ceramic nanoparticles, alumina (Al2O3) and graphene nanoplatelets (GNPs), were chosen to incorporate into a polymer matrix (epoxy resin). To obtain good dispersion of additive nanoparticles within the resin matrix, the ultrasonication technique was implemented. The microstructure, XRD patterns, hardness, and tensile properties of the fabricated composites were investigated here. Microstructural characterization demonstrated a good dispersion of ceramic nanoparticles of Al2O3 and GNPs in the fabricated composites. The addition of GNPs/Al2O3 nanoparticles as additive reinforcements to the fiber-reinforced polymers (FRPs) induced a significant increase in the hardness and tensile strength. Generally, the FRPs with 3 wt.% nano-Al2O3 enhanced composites exhibit higher tensile strength as compared with all other sets of composites. Particularly, the tensile strength was improved from 133 MPa in the unreinforced specimen to 230 MPa in the reinforced specimen with 3 wt.% Al2O3. This can be attributed to the better distribution of nanoparticles in the resin polymer, which, in turn, induces proper stress transfer from the matrix to the fiber phase. The hybrid mode mechanism depends on the interaction among the mechanical properties of fiber, the physical and chemical evolution of resin, the bonding properties of the fiber/resin interface, and the service environment. Therefore, the hybrid mode of woven carbon and glass fibers at a volume fraction of 64% with additive nanoparticles of GNPs/Al2O3 within the resin was appropriate to produce aeronautical structures with extraordinary properties.
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Cho, Dooyong, Hoseong Jeong, and Kyoungbong Han. "Residual Strength and Deformation Recovery of RC Beams Strengthened with FRPs Plates under the Sustained Load." Polymers and Polymer Composites 26, no. 1 (January 2018): 119–26. http://dx.doi.org/10.1177/096739111802600115.

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In this paper, in order to estimate efficacy, creep recovery, and residual strength of Fiber Reinforced Polymers (FRPs) strengthened Reinforced Concrete (RC) beams, long-term flexural experiments and static flexural experiments were carried out. For the long-term experiments, the beams were strengthened with a Carbon Fiber Reinforced Polymer (CFRP) plate and a Glass Fiber Reinforced Polymer (GFRP) plate respectively. The beams were placed under sustained loads for about 550 days. After the 550 days, all of the beams were unloaded for the measurement of deformation recovery. The deflection and strains of rebars and FRPs reinforcements were measures for about 60 days. As the result of long-terms experiment, the beams strengthened with CFRP plate showed a better performance in terms of deflection and strains of rebars. And the strengthened RC beams were very effective in terms of deflection control. Furthermore, the strengthened beams have shown immediate deformation recovery. Through the static flexural experiments, it was shown that the CFRP strengthened beam had high residual strength. It seems that the sustained loads did not affect bond and residual strength of the beams.
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Özbek, Ö., Ö. Y. Bozkurt, and A. Erkliğ. "Effect of Basalt Intraply Fiber Hybridization on the Compression Behavior of Filament Wound Composite Pipes." International Polymer Processing 36, no. 2 (May 1, 2021): 193–204. http://dx.doi.org/10.1515/ipp-2020-4005.

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Abstract The current study deals with the effect of basalt fiber hybridization on the compressive properties of composite pipes reinforced with glass fiber and carbon fiber. Hybrid and non-hybrid fiber reinforced pipes (FRPs) were fabricated through wet filament winding technique. Intraply fiber winding structure in which different fiber types were simultaneously wound at the layer was employed for the hybridization. The FRP samples wound by different fiber winding angles (± (40°), ± (55°), ± (70°)) were prepared in order to gain a better insight on the influence of basalt intraply fiber hybridization. The compression properties of FRP samples were experimentally determined by quasi-static compression tests using external parallel-plates for both the axial and radial directions. The non-hybrid carbon FRP pipes showed the maximum axial compression strength in parallel to the highest strength and lowest ductility of carbon fibers, while the minimum axial compression strength was obtained for the non-hybrid pipes reinforced with basalt fibers that, in comparison, exhibit much less strength and higher ductility. The pipes submitted to the axial compression tests predominantly failed due to the development of cracks and buckling along the fiber direction. While the inclusion of basalt fiber reduced the axial compression behavior of the non-hybrid carbon and glass FRP samples, it improved that behavior in the radial compression tests. Delamination was determined as the major failure mode for the damaged FRPs under radial compression. It is found that the incorporation of basalt fiber provides improvements in radial compression properties as opposed to axial compression properties and in the same manner the increment in fiber winding angle makes a positive contribution to radial compression properties.
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Dissertations / Theses on the topic "Fiber Reinforced Plastics (FRPs)"

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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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Krishnaswamy, Vijayarajan. "Durability of nanoclay FRP bars for concrete members." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4568.

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Thesis (M.S.)--West Virginia University, 2006.
Title from document title page. Document formatted into pages; contains xvi, 204 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 155-158).
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Hong, Yong. "Fatigue and Fracture of the FRP-Wood Interface: Experimental Characterization and Performance Limits." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/HongY2003.pdf.

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Littles, Jerrol W. Jr. "Ultrasonic characterization of Fiber Reinforced Polymeric (FRP) composites." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19160.

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Tung, Wang Kei. "FRP debonding from concrete substrate : theoretical and experimental approach /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202002%20TUNG.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002.
Includes bibliographical references (leaves 109-110). Also available in electronic version. Access restricted to campus users.
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Sahirman, Sidharta. "Fiber reinforced polymer (FRP) bridge deck life-cycle cost analysis." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10666.

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Thesis (Ph. D.)--West Virginia University, 2009.
Title from document title page. Document formatted into pages; contains xii, 153 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 129-136).
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Hu, Shenghua, and 胡盛华. "FRP-strengthened RC slabs anchored with FRP anchors." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47849800.

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Existing reinforced concrete (RC) structure can be strengthened upon the addition of externally bonded high-strength light-weight fibre-reinforced polymer (FRP) composites. An abundance of research over the last two decades has established the effectiveness of the externally bonded FRP via extensive experimental testing. Perhaps the most commonly occurring failure mode though is premature debonding of the FRP and debonding generally occurs at strains well below the strain capacity of the FRP. Debonding failures are undesirable as they are typically brittle and represent an under-utilisation of the FRP material. A straightforward means to prevent or at least delay debonding is by the addition of mechanical anchors, however, research to date on anchors is extremely limited. Of the various anchor concepts examined to date by researchers, this dissertation will focus on anchors made from FRP which are herein referred to as FRP anchors. The details and results of a program of research on the performance of FRP anchors in FRP-strengthened structures are presented in this dissertation. An extensive review of exiting literature helps establish knowledge gaps which serve to justify the need and the scope of the research reported herein. A novel bow-tie FRP anchor concept is then proposed and tested in smaller-scale single-shear FRP-to-concrete joint assemblages as well as larger-scale simply-supported FRP-strengthened RC slabs. The anchors are shown to increase the strength and slip capacity of the joints by up to 41 % and almost 600 %, respectively, in comparison with unanchored control joints. The anchors are then shown to increase the load and deflection capacity of slabs by 30 % and 110 %, respectively, above an unanchored control slab. In addition to strength, it is the ability of FRP anchors to introduce deformability into FRP-strengthened RC slabs which is particularly beneficial in order to produce safer structures. An analytical model is then developed which is based on a novel quad-linear moment-curvature response which can capture the complete load-deflection response of the FRP-strengthened slabs anchored with FRP anchors. The analytical modeling approach enables closed-form equations to be derived which can then be used by design engineers to relatively easily construct load-deflections responses and accurately predict member responses. Following the concluding comments for the project as a whole, future research topics of relevance are identified.
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Tsang, Terry Kin Chung. "Behaviour of concrete beams reinforced with hybrid FRP composite rebars /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202006%20TSANGT.

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Lau, Tak-bun Denvid. "Flexural ductility improvement of FRP-reinforced concrete members." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B38907756.

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Howard, Isaac. "Development of lightweight FRP bridge deck designs and evaluations." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2628.

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Thesis (M.S.)--West Virginia University, 2002.
Title from document title page. Document formatted into pages; contains xvii, 167 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 134-138).
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Books on the topic "Fiber Reinforced Plastics (FRPs)"

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béton, Fédération internationale du, ed. Retrofitting of concrete structures by externally bonded FRPs: With emphasis on seismic applications. Lausanne, Switzerland: International Federation for Structural Concrete, 2006.

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Vernon, Scott Derick, ed. FRP pipes and vessels: A survey of the European market and suppliers. Oxford, UK: Elsevier Advanced Technology, 1996.

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Brahim, Benmokrane, Bakht Baidar, and ISIS Canada, eds. Specifications for product certification of fibre reinforced polymers (FRPs) as internal reinforcement in concrete structures. Winnipeg, Man: ISIS Canada Research Network, 2006.

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H, Rizkalla S., Nanni Antonio, and American Concrete Institute, eds. Field applications of FRP reinforcement: Case studies. Farmington Hills, Mich: American Concrete Institute, 2003.

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Antonio, Nanni, ed. Fiber-reinforced-plastic (FRP) reinforcement for concrete structures: Properties and applications. Amsterdam: Elsevier, 1993.

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Bank, Lawrence Colin. Composites for construction: Structural design with FRP materials. Hoboken, N.J: John Wiley & Sons, 2006.

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G, Teng J., and Hong Kong Polytechnic University. Research Centre for Advanced Technology in Structural Engineering., eds. FRP composites in civil engineering: Proceedings of the International Conference on FRP Composites in Civil Engineering, 12-15 December 2001, Hong Kong, China. Amsterdam: Elsevier, 2001.

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Sheet Metal and Air Conditioning Contractors' National Association (U.S.), ed. Thermoset FRP duct construction manual. Chantilly, VA (4201 Lafayette Center Dr., Chantilly 20151-1209): Sheet Metal and Air Conditioning Contractors' National Association, 1997.

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National Institute of Standards and Technology (U.S.), ed. Connections of fiber-reinforced polymer (FRP) structural members: A review of the state of the art. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2000.

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National Institute of Standards and Technology (U.S.), ed. Connections of fiber-reinforced polymer (FRP) structural members: A review of the state of the art. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2000.

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Book chapters on the topic "Fiber Reinforced Plastics (FRPs)"

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Rath, Jan-Erik, Robert Graupner, and Thorsten Schüppstuhl. "Die-Less Forming of Fiber-Reinforced Plastic Composites." In Lecture Notes in Mechanical Engineering, 3–14. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18326-3_1.

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AbstractFiber-reinforced plastics (FRP) are increasingly popular in light weight applications such as aircraft manufacturing. However, most production processes of thin-walled FRP parts to date involve the use of expensive forming tools. This especially hinders cost-effective production of small series as well as individual parts and prototypes. In this paper, we develop new possible alternatives of highly automated and die-less production processes based on a short review of current approaches on flexible thin-walled FRP production. All proposed processes involve robot guided standard tools, similar to incremental sheet metal forming, for local forming of the base materials. These include woven glass fiber fabrics which are locally impregnated with thermoset resin and cured using UV-light, woven commingled yarns made out of glass fibers and thermoplastic fibers which are locally heated and pressed, as well as pre-consolidated thermoplastic organo sheets which require selective heating for forming. General applicability of the processes is investigated and validated in practical experiments.
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Nishida, Yuichi, Teruo Kimura, and Katsuji Shibata. "Injection Molding of Fiber Reinforced Plastics by Using Extracted Glass Fiber from FRP Waste." In Advances in Composite Materials and Structures, 533–36. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-427-8.533.

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Gooch, Jan W. "Carbon-Fiber-Reinforced Plastics." In Encyclopedic Dictionary of Polymers, 118. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_1940.

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Yamaguchi, Hiroshi, and Toru Fujii. "Bamboo Fiber Reinforced Plastics." In Natural Fibers, Plastics and Composites, 305–19. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-9050-1_17.

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Netravali, Anil N. "Ramie Fiber Reinforced Natural Plastics." In Natural Fibers, Plastics and Composites, 321–43. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-9050-1_18.

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Schlöesser, Thomas P. "Natural Fiber Reinforced Automotive Parts." In Natural Fibers, Plastics and Composites, 275–85. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-9050-1_15.

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Kozlowski, Ryszard, and Maria Wladyka-Przybylak. "Uses of Natural Fiber Reinforced Plastics." In Natural Fibers, Plastics and Composites, 249–74. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-9050-1_14.

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Ehrenstein, Gottfried W., and Sonja Pongratz. "Mechanical Behavior of Fiber Reinforced Plastics." In Resistance and Stability of Polymers, 885–913. München: Carl Hanser Verlag GmbH & Co. KG, 2013. http://dx.doi.org/10.3139/9783446437098.006.

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Thornton, Peter H. "The Crush of Fiber-Reinforced Plastics." In Handbook of Ceramics and Composites, 307–37. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003210085-11.

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Ravindran, Lakshmipriya, M. S. Sreekala, and Sabu Thomas. "Natural Fibres—A Potential Bio-reinforcement in Polymers for Fibre Reinforced Plastic (FRP) Structures—An Overview." In Fiber Reinforced Polymeric Materials and Sustainable Structures, 129–37. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8979-7_10.

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Conference papers on the topic "Fiber Reinforced Plastics (FRPs)"

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Alam, Firoz, and Reza N. Jazar. "An Experimental Study of Acid Exposed Fibre Reinforced Plastic Gratings." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64152.

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Fibre Reinforced Plastics (FRPs) generally have greater advantages over conventional materials for their structural properties. However, the service life can significantly be shortened if the fibre reinforced plastics are exposed to adverse environmental conditions especially acid vapour, humidity and high temperature. In many chemical industrial plants in Australia and elsewhere fibre reinforced plastic gratings are used as structural components of stairs and passages where they are subjected to varying degrees of fluosilicic acid, a byproduct of the industrial manufacturing process. As currently no experimental data on the effects of fluosilicic acid on FRPs is available in the public domain, it is difficult to predict the service life of FRPs with some certainty. In order to understand the structural strength of fluosilicic acid exposed FRPs, an experimental study was undertaken. A series of specimens from various locations of a chemical plan in Australia were acquired and studied. Some new specimens (not exposed to acid, humidity and high temperature) were also studied to provide a benchmark for the comparison. The results indicated that the long time exposure to harsh environment and acid vapour can significantly deteriorate the flexural strength and service life of FRPs.
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Burtscher, Stefan. "Wedge Anchor For Fiber Reinforced Plastics (FRP)." In IABSE Symposium, Weimar 2007: Improving Infrastructure Worldwide. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2007. http://dx.doi.org/10.2749/222137807796120229.

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Skandani, Amir Alipour, Ayoub Yari Boroujeni, and Marwan Al-Haik. "Temperature Dependent Viscoelastic Behavior of FRP/ZnO Nano-Rods Hybrid Nanocomposites." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-63326.

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The inclusion of nanomaterials within fiber reinforced plastics (FRPs) could improve their resistance against time dependent deformation. Conceivable high temperature applications of such hybrid composites make it crucial to investigate their temperature-dependent properties as well as their durability. In this study, zinc oxide (ZnO) nano rods were grown on the surface of carbon fibers and the hybridized reinforcement was formed in a laminate composites. The viscoelastic behavior was probed utilizing dynamic mechanical analysis (DMA). The time/temperature superposition principle (TTSP) was invoked to obtain the viscoelastic properties of FRPs based on fibers with different surface treatments. Results indicated that the presence of ZnO nano rods at the interface between the carbon fibers and the epoxy matrix enhances the composite’s creep resistance at elevated temperatures and prolonged duration.
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Gustke, K., D. Kupke, R. Drehmann, T. Lampke, J. Gebauer, U. Klotzbach, and A. F. Lasagni. "Low Temperature Soldering of Laser Structured and Metal Coated Fiber Reinforced Plastics." In ITSC2021, edited by F. Azarmi, X. Chen, J. Cizek, C. Cojocaru, B. Jodoin, H. Koivuluoto, Y. C. Lau, et al. ASM International, 2021. http://dx.doi.org/10.31399/asm.cp.itsc2021p0569.

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Abstract Assemblies containing fiber-reinforced plastic (FRP) and metal parts are typically fastened together via mechanical joining or adhesive bonding. Mechanical joining processes tend to weaken FRP parts by cutting fibers, while adhesives require long cures and often lead to inseparable material compounds. This paper evaluates a new joining method in which plastic parts are laser treated, then metallized via wire-arc spraying, and finally soldered to mating metal parts using a low-temperature process. Due to the effective increase in interface area resulting from laser structuring, bond strengths of up to 15.5 MPa can be achieved.
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Yang, Yuqing, Wenhua Shu, Xiaoming Luo, Xiang Wen, Jun Si, Ting Zhang, and Huanan Wang. "Comparison About Standards of Fiber-Reinforced Plastic Pressure Vessels Between China and America." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65052.

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The paper briefly gives a summary of standard developments on fiber-reinforced plastic pressure vessels home and abroad. The management and basic technical requirements of FRP vessels are presented in the latest edition Chinese code Supervision Regulation on Safety Technology for Stationary Pressure Vessel (TSG 21-2016). Primary contents of China National Standard General Requirements of Fiber Reinforced Plastics Pressure Vessel (draft standard for approval) are introduced. Comparisons and investigations on FRP are conducted based on difference between China National Standard and ASME BPV CODE X -2015 Fiber-Reinforced Plastic Pressure Vessels, focusing on application scope, design qualification, procedure qualification, inspection and so on. The research will lay a solid foundation for Chinese development in the FRP fields in the future.
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Wei, Daoxiang, Yuqing Yang, Jun Si, and Xiang Wen. "Study on Acoustic Emission Detection Technology of Fiber Reinforced Plastic Pressure Vessel." In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21088.

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Abstract Fiber reinforced plastics are used in pressure vessel manufacturing because of their high strength and corrosion resistance.Defects may occur in the manufacture and use of the pressure vessel. To ensure safe operation of the pressure vessel, it is necessary to conduct periodic safety assessment of the pressure vessel put into operation. It is difficult to evaluate the safety status of fiber-reinforced plastic pressure vessels by conventional nondestructive testing.Acoustic emission detection technology is a dynamic detection method, which has obvious advantages for the performance and fracture process of fiber reinforced plastic materials. ASME section V or ASTM section on acoustic emission detection of FRP pressure vessels, in which the localization of defects is mainly based on acoustic emission instruments. Due to the anisotropy of FRP material, the instrument can only give the area of the defect, and then use other non-destructive testing methods supplementary detection, so the author proposes a regional positioning method, which can locate defects more accurately. In this paper, acoustic emission detection method and lead breaking method were used to simulate the deficiency, and acoustic velocity attenuation and variation of fiber reinforced plastics were studied, and confirmative tests were carried out to obtain the positioning accuracy of the deficiency in different areas.In order to achieve the acoustic emission (AE) response behavior of stretching damage of glass fiber composites with fiber pre-broken and weak bonding, stretching tests and real-time AE monitoring of glass fiber composites were conducted.Experimental results showed that damage model such as matrix cracking and fiber fracture and bending could be occurred in the process of damage and failure. The composition and content of signal frequency of AE is also different because of difference of preset defect.
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Xu, Xinsheng, and Tiecheng Wang. "Experimental Research on Mechanical Property of High Performance Fiber Reinforced Plastics (FRP)." In First International Conference on Transportation Engineering. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40932(246)364.

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Gururaja, S., and M. Ramulu. "Failure Analysis of a Fibrous Composite Half-Space Subjected to Uniform Surface Line Load." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42569.

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Uni-Directional Fiber-Reinforced Plastic (UD-FRP) laminates have been modeled previously as an equivalent quasi-homogeneous monoclinic half-space subjected to an inclined line load on the surface using Lekhnitskii’s formulation simulating the orthogonal edge trimming loads in UD-FRPs. In continuation, failure analysis of the aforementioned composite half-space has been carried out in the present investigation based on Tsai-Wu criterion. In particular, the failure behavior of the half-space laminate with respect to the fiber orientation, load inclination angle and spatial coordinates has been examined in detail. The motivation behind such a study lies in correlating the failure behavior of the half-space laminate with the damage progression observed during orthogonal edge trimming experiments. The present work strives at identifying this relationship and in the process, understanding the physics of orthogonal cutting mechanisms in UD-FRP laminates.
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Renner, Axel, Wolf-Joachim Fischer, and Uwe Marschner. "A New Imaging Approach to In Situ and Ex-Situ Inspections of Fibre Reinforced Composites by Magnetic Induction Tomography (MIT)." In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-8231.

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Fiber reinforced composites (FRP) for industrial applications face constantly increasing demands regarding efficiency, reliability and economy. Furthermore, it was shown that FRP’s with tailored reinforcements are superior to metallic or monolithic materials. However, a trustworthy description of load-specific failure behaviour and damage evolution of composite structures can hardly be given, because these processes are very complex and are still not entirely understood. Amongst other things, several research groups have shown that material damages like fiber fracture, delamination, matrix cracking or flaws can be discovered by analyzing the electrical properties of conducting composites, e.g. carbon fiber reinforced plastics (CFRP). Furthermore, it was shown that this method could be used for structural health monitoring or non-destructive testing (NDT) [8–12].Within this work, Magnetic Induction Tomography (MIT), which is a new imaging approach, is introduced into the topic of NDT of CFRP’s. This non-contacting imaging method gains the inner spatial distribution of conductivity of a specimen and depicts material inhomogeneity, like damages, in 2D or 3D images. Numerical and experimental investigations are presented and give a first impression of the performance of this technique. It is demonstrated that MIT is a promising approach for NDT and could be used for fabrication quality control of conductive FRP’s and could potentially be used as a health monitoring system using an integrated setup.
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Ogawa, Keiji, Heisaburo Nakagawa, and Masatoshi Matsudaira. "Evaluation and Improvement of Micro-Drilled-Hole Wall Quality in Printed Wiring Boards Made of Glass Fiber-Reinforced Plastics." In ASME 2009 InterPACK Conference collocated with the ASME 2009 Summer Heat Transfer Conference and the ASME 2009 3rd International Conference on Energy Sustainability. ASMEDC, 2009. http://dx.doi.org/10.1115/interpack2009-89034.

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With recent worldwide-use and the rapid spread of electric and electronic equipment, printed wiring boards (PWBs) are being miniaturized and made multifunctional. Miniaturizing the equipment and making it high performance are accompanied by an increase in the number of small diameter through holes for circuit connections available to the PWBs. Such tendency needs the large number of smaller diameter drilling with shorter pitches. Moreover, the improvement of drilled-hole wall quality for PWBs might be demanded by such trends. Here, PWBs are often made of fiber-reinforced plastics (FRP) for the insulating layers and copper foil for the circuit layers. A woven glass fiber cloth is generally used for PWBs. Therefore, delamination might occur during drilling and affect the surface roughness of the drilled-hole wall. Such wrong surface roughness of drilled-hole wall should be avoided because it might reduce the reliability of insulating between next holes by ion migration of copper plating progressing along the delamination. Revealing of its mechanism is expected to be more important with smaller diameter with smaller electric devices. However, it might be difficult because the micr-drilling of FRP shows is a complex phenomenon because it consists of different materials. Therefore, this paper investigates the proper method to improve drilled-hole wall quality by evaluating the drill temperature rising mechanism and the surface generation mechanism of micro-drilled-hole walls of PWBs made of GFRP. The following results were reached: (1) A drill temperature rising mechanism was conducted. (2) Drill temperature tends to increase with the frictional torque between the hole wall and the margin part of drill. (3) Frictional torque increases with the spring-back of the drilled-hole wall during drilling. (4) The surface roughness of the drilled-hole wall of the GFRP plate is affected by the breakdown of the glass fiber and is mainly caused by the cutting edge of the outer corner except the margin part of the drill. (5) A drilling method with higher fiber bonding strength, such as drilling with compressing PWBs in the thickness direction, effectively improves the drilled-hole wall quality.
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Reports on the topic "Fiber Reinforced Plastics (FRPs)"

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

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Bond, Raymond, David Koester, Lalita Udpa, and Mahmood Haq. Development of Tools for High Volume, High Speed Non-Destructive Inspection of Carbon Fiber Reinforced Plastics. Office of Scientific and Technical Information (OSTI), March 2021. http://dx.doi.org/10.2172/1769034.

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Bell, Matthew, Rob Ament, Damon Fick, and Marcel Huijser. Improving Connectivity: Innovative Fiber-Reinforced Polymer Structures for Wildlife, Bicyclists, and/or Pedestrians. Nevada Department of Transportation, September 2022. http://dx.doi.org/10.15788/ndot2022.09.

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Engineers and ecologists continue to explore new methods and adapt existing techniques to improve highway mitigation measures that increase motorist safety and conserve wildlife species. Crossing structures, overpasses and underpasses, combined with fences, are some of the most highly effective mitigation measures employed around the world to reduce wildlife-vehicle collisions (WVCs) with large animals, increase motorist safety, and maintain habitat connectivity across transportation networks for many other types and sizes of wildlife. Published research on structural designs and materials for wildlife crossings is limited and suggests relatively little innovation has occurred. Wildlife crossing structures for large mammals are crucial for many highway mitigation strategies, so there is a need for new, resourceful, and innovative techniques to construct these structures. This report explored the promising application of fiber-reinforced polymers (FRPs) to a wildlife crossing using an overpass. The use of FRP composites has increased due to their high strength and light weight characteristics, long service life, and low maintenance costs. They are highly customizable in shape and geometry and the materials used (e.g., resins and fibers) in their manufacture. This project explored what is known about FRP bridge structures and what commercial materials are available in North America that can be adapted for use in a wildlife crossing using an overpass structure. A 12-mile section of US Highway 97 (US-97) in Siskiyou County, California was selected as the design location. Working with the California Department of Transportation (Caltrans) and California Department of Fish and Wildlife (CDFW), a site was selected for the FRP overpass design where it would help reduce WVCs and provide habitat connectivity. The benefits of a variety of FRP materials have been incorporated into the US-97 crossing design, including in the superstructure, concrete reinforcement, fencing, and light/sound barriers on the overpass. Working with Caltrans helped identify the challenges and limitations of using FRP materials for bridge construction in California. The design was used to evaluate the life cycle costs (LCCs) of using FRP materials for wildlife infrastructure compared to traditional materials (e.g., concrete, steel, and wood). The preliminary design of an FRP wildlife overpass at the US-97 site provides an example of a feasible, efficient, and constructible alternative to the use of conventional steel and concrete materials. The LCC analysis indicated the preliminary design using FRP materials could be more cost effective over a 100-year service life than ones using traditional materials.
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Spetsieris, N., and D. Edser. Framework for dynamic uncertainty budget evolution for mode I fracture toughness measurements of fibre-reinforced plastic (FRP) composites: a user’s guide to uncertainty budget calculation tool. National Physical Laboratory, June 2022. http://dx.doi.org/10.47120/npl.mat104.

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New Structural Material - Fiber Reinforced Plastics. Purdue University, 2007. http://dx.doi.org/10.5703/1288284315731.

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New Infrastructure Repair Method - Fiber Reinforced Plastics. Purdue University, 2007. http://dx.doi.org/10.5703/1288284315735.

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STUDY ON MECHANICAL PROPERTIES OF STAINLESS STEEL PLATE SHEAR WALL STRENGTHENED BY CORRUGATED FRP. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.305.

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In this paper, the mechanical properties of stainless steel plate shear walls reinforced with fiber reinforced polymer (FRP) of corrugated sections were studied. Two scaled FRP-stainless steel plate shear wall specimens were designed and subjected to the monotonic horizontal load. FRPs in the form of corrugated and flat sections were respectively used to reinforce the embedded steel plates of the steel plate shear wall. The test results show that the failure mode of flat FRP reinforced steel plate shear wall is mainly the peeling of the FRP, while the failure mode of corrugated FRP reinforced steel plate shear wall is mainly the tensile fracture of the FRP. The out-of-plane deformation of steel plate reinforced with corrugated FRP can be effectively restrained. The maximum bearing capacity of the two specimens is 97.96 kN and 106.32 kN respectively. The yield load of the specimen with corrugated FRP is increased by 16.5%, the ultimate bearing capacity is increased by 9.3% and the stiffness is increased by 68%.
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