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Relevant bibliographies by topics / Composite materials Strength of materials Composite construction

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Academic literature on the topic 'Composite materials Strength of materials Composite construction'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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Journal articles on the topic "Composite materials Strength of materials Composite construction"

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Ertuğ, Burcu. "Advanced Fiber-Reinforced Composite Materials for Marine Applications." Advanced Materials Research 772 (September 2013): 173–77. http://dx.doi.org/10.4028/www.scientific.net/amr.772.173.

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Most widely used material in ship hull construction is undoubtedly the steel. Composite materials have become suitable choice for marine construction in 1960s. The usage of the fiber reinforced plastic (FRP) in marine applications offers ability to orient fiber strength, ability to mold complex shapes, low maintenance and flexibility. The most common reinforcement material in marine applications is E-glass fiber. Composite sandwich panels with FRP faces and low density foam cores have become the best choice for small craft applications. The U.S Navy is using honeycomb sandwich bulkheads to reduce the ship weight above the waterline. Composites will play their role in marine applications due to their lightness, strength, durability and ease of production. It is expected that especially FRP composites will endure their life for many years from now on in the construction of boat building.

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Adi, Maissa, Basim Abu-Jdayil, Fatima Al Ghaferi, Sara Al Yahyaee, and Maryam Al Jabri. "Seawater-Neutralized Bauxite Residue–Polyester Composites as Insulating Construction Materials." Buildings 11, no. 1 (January 6, 2021): 20. http://dx.doi.org/10.3390/buildings11010020.

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Bauxite residue (BR) is one of the most commonly generated industrial wastes in the world. Thus, novel techniques for its proper utilization must be urgently developed. Herein, seawater-neutralized BR–unsaturated polyester resin (UPR) composites are presented as insulating construction materials with promising mechanical performance. Composites with different BR content (0–60 vol.%) were prepared to evaluate the influence of BR content on the compressive, tensile, and flexural strengths as well as the moduli of BR–UPR composites. Experimental results revealed that adding BR particles to the polyester matrix increased the compressive properties (strength, modulus, and strain). The composites containing 20 vol.% BR showed the maximum compressive strength (108 MPa), while the composites with 30 vol.% BR exhibited the maximum compressive modulus (1 GPa). Moreover, the reduction in tensile and flexural strengths with an increase in the BR content may be attributed to the lower efficiency of stress transfer between the BR particle–polyester interface due to weak adhesion at the interface, direct contact between particles, and presence of voids or porosity. Although the tensile strength and failure stress decreased with increasing filler content, the produced composites showed outstanding tensile strength (4.0–19.3 MPa) compared with conventional insulating materials. In addition, the composite with 40 vol.% BR demonstrated a flexural strength of 15.5 MPa. Overall, BR–UPR composites showed excellent compatibility with promising mechanical properties as potential insulating construction materials.

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Mouahid, Abdelaziz. "Infrared thermography used for composite materials." MATEC Web of Conferences 191 (2018): 00011. http://dx.doi.org/10.1051/matecconf/201819100011.

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Many areas of the industry use composite materials, because of their good mechanical features in terms of low density and high mechanical strength. Composite materials are used wherever elevated rigidity and strength with reduced unit weight are required; such as wind turbine blades, shipbuilding, aeronautical and aerospace. However, the properties of composites can be hugely affected because of inside defaults such as delaminations or local cracks. Several non-destructive methods have been used for the verification of defects during construction or operation, such as ultrasound or x-ray. These methods are costly and difficult to implement. Non-destructive method using infrared thermography is considered very useful and works perfect with low cost. Two methods of non-destructive detection by infrared exists, which are (i) passive thermography, that consists of measuring infrared stream emitted by the material and (ii) active thermography, which consists of heating the material and measuring the cooling of material surface using an infrared camera. This communication describes the basic principles of both passive and active thermography, and then describes other different methods for detection of composite materials defects.

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Arora, H., M. Kelly, A. Worley, P. Del Linz, A. Fergusson, P. A. Hooper, and J. P. Dear. "Compressive strength after blast of sandwich composite materials." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372, no. 2015 (May 13, 2014): 20130212. http://dx.doi.org/10.1098/rsta.2013.0212.

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Composite sandwich materials have yet to be widely adopted in the construction of naval vessels despite their excellent strength-to-weight ratio and low radar return. One barrier to their wider use is our limited understanding of their performance when subjected to air blast. This paper focuses on this problem and specifically the strength remaining after damage caused during an explosion. Carbon-fibre-reinforced polymer (CFRP) composite skins on a styrene–acrylonitrile (SAN) polymer closed-cell foam core are the primary composite system evaluated. Glass-fibre-reinforced polymer (GFRP) composite skins were also included for comparison in a comparable sandwich configuration. Full-scale blast experiments were conducted, where 1.6×1.3 m sized panels were subjected to blast of a Hopkinson–Cranz scaled distance of 3.02 m kg −1/3 , 100 kg TNT equivalent at a stand-off distance of 14 m. This explosive blast represents a surface blast threat, where the shockwave propagates in air towards the naval vessel. Hopkinson was the first to investigate the characteristics of this explosive air-blast pulse (Hopkinson 1948 Proc. R. Soc. Lond. A 89 , 411–413 ( doi:10.1098/rspa.1914.0008 )). Further analysis is provided on the performance of the CFRP sandwich panel relative to the GFRP sandwich panel when subjected to blast loading through use of high-speed speckle strain mapping. After the blast events, the residual compressive load-bearing capacity is investigated experimentally, using appropriate loading conditions that an in-service vessel may have to sustain. Residual strength testing is well established for post-impact ballistic assessment, but there has been less research performed on the residual strength of sandwich composites after blast.

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Setlak, Lucjan, Rafał Kowalik, and Tomasz Lusiak. "Practical Use of Composite Materials Used in Military Aircraft." Materials 14, no. 17 (August 25, 2021): 4812. http://dx.doi.org/10.3390/ma14174812.

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The article presents a comparative characterization of the structural materials (composites and metals) used in modern aviation structures, focusing on the airframe structure of the most modern aircraft (Airbus A-380, Boeing B-787, and JSF F-35). Selected design and operational problems were analysed, with particular emphasis on composites and light metals (aluminium). For this purpose, the Shore’s method was used for the analysis of the obtained strength results and the programming environment (ANSYS, SolidWorks) required to simulate the GLARE 3 2/1-04 composite. The focus was on highlighting the differences in the construction and modelling of these materials resulting from their various structures (isotropy and anisotropy), e.g., by analyzing the mechanics of metal destruction and comparing it with the composite material. In terms of solving the problems of finite element analysis FEM, tests have been carried out on two samples made of an aluminium alloy and a fiberglass composite. The focus was on highlighting the differences in the construction and modelling of these materials resulting from their various structures (isotropy and anisotropy), e.g., by analyzing the mechanics of metal destruction and comparing it with the composite material. On the basis of the obtained results, the preferred variant was selected, in terms of displacements, stresses, and deformations. In the final part of the work, based on the conducted literature analysis and the conducted research (analysis, simulations, and tests), significant observations and final conclusions, reflected in practical applications, were formulated.

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Komarov, V. A., and S. A. Pavlova. "Optimal design of sandwich floor panels made of high-strength composite materials considering stiffness constraints." VESTNIK of Samara University. Aerospace and Mechanical Engineering 20, no. 2 (July 9, 2021): 45–52. http://dx.doi.org/10.18287/2541-7533-2021-20-2-45-52.

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The article considers the challenge of designing sandwich floor panels made of high-strength composites considering stiffness constraints. A dimensionless criterion is proposed for assessing the stiffness of floor panels. A new constraint equation determines an interrelation between geometrical parameters of composite constructions and a given criterion. A demo example and the results of designing a typical floor panel using a high-strength composite material are presented. The mass of a square meter of the structure is considered as an objective function, and the thickness of the skin and the height of the honeycomb core of a sandwich construction are considered as design variables. In order to find the optimal ratio of design variables, a graphical interpretation of the design problem is used considering strength and stiffness constraints in the design space. It is noted that the presence of restrictions on a given value of the permissible relative deflection leads to an increase in the required height of the honeycomb filler with an insignificant consumption of additional mass of the sandwich construction.

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Rajak, Dipen, Durgesh Pagar, Pradeep Menezes, and Emanoil Linul. "Fiber-Reinforced Polymer Composites: Manufacturing, Properties, and Applications." Polymers 11, no. 10 (October 12, 2019): 1667. http://dx.doi.org/10.3390/polym11101667.

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Composites have been found to be the most promising and discerning material available in this century. Presently, composites reinforced with fibers of synthetic or natural materials are gaining more importance as demands for lightweight materials with high strength for specific applications are growing in the market. Fiber-reinforced polymer composite offers not only high strength to weight ratio, but also reveals exceptional properties such as high durability; stiffness; damping property; flexural strength; and resistance to corrosion, wear, impact, and fire. These wide ranges of diverse features have led composite materials to find applications in mechanical, construction, aerospace, automobile, biomedical, marine, and many other manufacturing industries. Performance of composite materials predominantly depends on their constituent elements and manufacturing techniques, therefore, functional properties of various fibers available worldwide, their classifications, and the manufacturing techniques used to fabricate the composite materials need to be studied in order to figure out the optimized characteristic of the material for the desired application. An overview of a diverse range of fibers, their properties, functionality, classification, and various fiber composite manufacturing techniques is presented to discover the optimized fiber-reinforced composite material for significant applications. Their exceptional performance in the numerous fields of applications have made fiber-reinforced composite materials a promising alternative over solitary metals or alloys.

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Koci, Mirela. "Composite Materials Behavior Analyze for Desk, Hull and Board Yacht's Panel." European Journal of Engineering and Formal Sciences 2, no. 3 (December 29, 2018): 48. http://dx.doi.org/10.26417/ejef.v2i3.p48-55.

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Materials science and composite technology are advancing rapidly, and new composites such as epoxy mixtures including the application of carbon nano tubes are becoming more popular with ever growing concern for high performance marine structures. Indeed, lightness, ease of production, durability and strength enable composites to play a vital role in marine applications. As the Marine sector continues to look at improving efficiency and reducing overall costs, Composite materials will play a huge part in the future of Marine construction. The paper is focused to the static linear simulation of elastic bodies using Solid Works Simulation. Stresses analyses have been developed in the static analyze which provide tools for the linear stress analysis of parts and assemblies loaded by static loads, taking in consideration for the analyze the most stressed part of the bottom, board and desk of the yachts Keywords: Static analyze, stress, composite materials, optimization, marine sector, leisure yachts.

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Koci, Mirela. "Composite Materials Behavior Analyze for Desk, Hull and Board Yacht's Panel." European Journal of Engineering and Formal Sciences 2, no. 3 (December 1, 2018): 48–55. http://dx.doi.org/10.2478/ejef-2018-0016.

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Abstract Materials science and composite technology are advancing rapidly, and new composites such as epoxy mixtures including the application of carbon nano tubes are becoming more popular with ever growing concern for high performance marine structures. Indeed, lightness, ease of production, durability and strength enable composites to play a vital role in marine applications. As the Marine sector continues to look at improving efficiency and reducing overall costs, Composite materials will play a huge part in the future of Marine construction. The paper is focused to the static linear simulation of elastic bodies using Solid Works Simulation. Stresses analyses have been developed in the static analyze which provide tools for the linear stress analysis of parts and assemblies loaded by static loads, taking in consideration for the analyze the most stressed part of the bottom, board and desk of the yachts

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Jelić, Aleksandra, Danijela Kovačević, Marina Stamenović, and Slaviša Putić. "Current technologies for recycling fiber-reinforced composites." Scientific Technical Review 70, no. 3 (2020): 24–28. http://dx.doi.org/10.5937/str2003024j.

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High strength, high toughness, and low weight make fiber-reinforced composite materials important as an alternative to traditional materials. Due to their application in different fields, such as construction, aviation, marine, automotive technologies and biomedicine, their production has increased leading to the increasement of composite wastes. New technologies for managing fiber-reinforced composite wastes have been developed to solve the issue of end-of-life of these materials. The aim of this paper is to emphasize recycling technologies used for fiber reinforced composites, and their potential reusage.

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Dissertations / Theses on the topic "Composite materials Strength of materials Composite construction"

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Hu, Bo. "Bio-based composite sandwich panel for residential construction." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 5.24 Mb., 265 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3221055.

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Lestari, Wahyu. "Damage of composite structures : detection technique, dynamic response and residual strength." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/12072.

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Zhao, Huyue. "Stress Analysis of Tapered Sandwich Panels with Isotropic or Laminated Composite Facings." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/ZhaoH2002.pdf.

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Wilkes, Justin A. "Ultra stiff wood composite a comparison of strength properties against existing products in the forest products market /." Master's thesis, Mississippi State : Mississippi State University, 2009. http://library.msstate.edu/etd/show.asp?etd=etd-07092009-112040.

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Yuan, Lie Ping. "Partial interaction behaviour of bolted side plated reinforced concrete beams." Title page, abstract and contents only, 2003. http://web4.library.adelaide.edu.au/theses/09PH/09phl7161.pdf.

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Includes bibliographical references (p. 185-189) Aims to determine the effect of partial interaction on the behaviour of the concrete beam, plate and bolt connector components of the composite plated beam. Develops design rules for the determination of the ultimate capacity for bolted plate reinforced composite beams.

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Poulin, John P. "Bond and Static Bending Strength of FRP-Reinforced Glulam Beams Using Western Wood Species. Vol. 1." Volume 1 Volume 2, 2001. http://www.library.umaine.edu/theses/theses.asp?Cmd=abstract&ID=CIE2001-002.

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Hartnagel, Bryan A. "Inelastic design and experimental testing of compact and noncompact steel girder bridges /." free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9841147.

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Nezamian, Abolghasem 1968. "Bond strength of concrete plugs embedded in tubular steel piles." Monash University, Dept. of Civil Engineering, 2003. http://arrow.monash.edu.au/hdl/1959.1/5601.

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Wen, Edward A. "Compressive strength prediction for composite unmanned aerial vehicles." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=959.

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Thesis (M.S.)--West Virginia University, 1999.
Title from document title page. Document formatted into pages; contains ix, 117 p. : ill. (some col.) Includes abstract. Includes bibliographical references (p. 83-84).

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Violette, Melanie Glenn. "Time-dependent compressive strength of unidirectional viscoelastic composite materials /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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Books on the topic "Composite materials Strength of materials Composite construction"

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Grisaffe, Salvatore J. Reinforcements: The key to high performance composite materials. [Washington, DC]: National Aeronautics and Space Administration, 1990.

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Vick, Charles B. Lamination of hardwood composite framing with an emulsion polymer-isocyanate adhesive and radio-frequency curing. Asheville, N.C: U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1987.

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Composite materials. Stillwater, MN: Wolfgang Pub., 2009.

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Composite construction. New York: Spon Press, 2003.

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Nethercot, D. A. Composite Construction. London: Taylor & Francis Inc, 2004.

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Composite Construction. London: Taylor & Francis Group Plc, 2004.

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Fatigue of composite materials. Lancaster: Technomic Pub. Co., 1987.

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Talreja, Ramesh. Fatigue of composite materials. Lyngby, Denmark: Technical University of Denmark, 1985.

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Talreja, R. Fatigue of composite materials. Lancaster: Technomic Publishing, 1987.

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Keller, Thomas. Use of fibre reinforced polymers in bridge construction. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2003. http://dx.doi.org/10.2749/sed007.

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<p>The aim of the present Structural Engineering Document, a state-of-the-art report, is to review the progress made worldwide in the use of fibre reinforced polymers as structural components in bridges until the end of the year 2000.<p> Due to their advantageous material properties such as high specific strength, a large tolerance for frost and de-icing salts and, furthermore, short installation times with minimum traffic interference, fibre reinforced polymers have matured to become valuable alternative building materials for bridge structures. Today, fibre reinforced polymers are manufactured industrially to semi-finished products and ccimplete structural components, which can be easily and quickly installed or erected on site.<p> Examples of semi-finished products and structural components available are flexible tension elements, profiles stiff in bending and sandwich panels. As tension elements, especially for the purpose of strengthening, strips and sheets are available, as weil as reinforcing bars for concrete reinforcement and prestressing members for internal prestressing or external use. Profiles are available for beams and columns, and sandwich constructions especially for bridge decks. During the manufacture of the structural components fibre-optic sensors for continuous monitoring can be integrated in the materials. Adhesives are being used more and more for joining components.<p> Fibre reinforced polymers have been used in bridge construction since the mid-1980s, mostly for the strengthening of existing structures, and increasingly since the mid-1990s as pilot projects for new structures. In the case of new structures, three basic types of applications can be distinguished: concrete reinforcement, new hybrid structures in combination with traditional construction materials, and all-composite applications, in which the new materials are used exclusively.<p> This Structural Engineering Document also includes application and research recommendations with particular reference to Switzerland.<p> This book is aimed at both students and practising engineers, working in the field of fibre reinforced polymers, bridge design, construction, repair and strengthening.

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Book chapters on the topic "Composite materials Strength of materials Composite construction"

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Jamaludin, Mohd Ariff, Kamarulzaman Nordin, and Mansur Ahmad. "The Bending Strength of Medium Density Fibreboard (MDF) from Different Ratios of Kenaf and Oil Palm Empty Fruit Bunches (EFB) Admixture for Light Weight Construction." In Advances in Composite Materials and Structures, 77–80. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-427-8.77.

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Wei, Yimeng, Areti Markopoulou, Yuanshuang Zhu, Eduardo Chamorro Martin, and Nikol Kirova. "Additive Manufacture of Cellulose Based Bio-Material on Architectural Scale." In Proceedings of the 2021 DigitalFUTURES, 286–304. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5983-6_27.

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AbstractThere are severe environmental and ecological issues once we evaluate the architecture industry with LCA (Life Cycle Assessment), such as emission of CO2 caused by necessary high temperature for producing cement and significant amounts of Construction Demolition Waste (CDW) in deteriorated and obsolete buildings. One of the ways to solve these problems is Bio-Material. CELLULOSE and CHITON is the 1st and 2nd abundant substance in nature (Duro-Royo, J.: Aguahoja_Programmable Water-based Biocomposites for Digital Design and Fabrication across Scales. MIT, pp. 1–3 (2019)), which means significantly potential for architectural dimension production. Meanwhile, renewability and biodegradability make it more conducive to the current problem of construction pollution. The purpose of this study is to explore Cellulose Based Biomaterial and bring it into architectural scale additive manufacture that engages with performance in the material development, with respect to time of solidification and control of shrinkage, as well as offering mechanical strength. At present, the experiments have proved the possibility of developing a cellulose-chitosan- based composite into 3D-Printing Construction Material (Sanandiya, N.D., Vijay, Y., Dimopoulou, M., Dritsas, S., Fernandez, J.G.: Large-scale additive manufacturing with bioinspired cellulosic materials. Sci. Rep. 8(1), 1–5 (2018)). Moreover, The research shows that the characteristics (Such as waterproof, bending, compression, tensile, transparency) of the composite can be enhanced by different additives (such as xanthan gum, paper fiber, flour), which means it can be customized into various architectural components based on Performance Directional Optimization. This solution has a positive effect on environmental impact reduction and is of great significance in putting the architectural construction industry into a more environment-friendly and smart state.

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Chawla, Krishan K. "Monotonic Strength and Fracture." In Composite Materials, 421–49. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-0-387-74365-3_12.

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Chawla, Krishan K. "Monotonic Strength and Fracture." In Composite Materials, 425–53. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-28983-6_12.

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Chawla, Krishan K. "Monotonic Strength and Fracture." In Composite Materials, 377–403. New York, NY: Springer New York, 1998. http://dx.doi.org/10.1007/978-1-4757-2966-5_12.

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Chawla, Krishan Kumar. "Strength, Fracture, Fatigue, and Design." In Composite Materials, 229–58. New York, NY: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4757-3912-1_12.

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Pilato, Louis A., and Michael J. Michno. "Composite Compressive Strength." In Advanced Composite Materials, 128–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-662-35356-1_8.

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Pilato, Louis A., and Michael J. Michno. "Damage Tolerant Composites: Post Impact Compressive Strength." In Advanced Composite Materials, 136–43. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-662-35356-1_9.

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Caron, Jean-François. "Composite Materials and Construction." In Organic Materials for Sustainable Construction, 313–38. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118616734.ch13.

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Huang, Yong, Shi Ke Zhao, Chang An Wang, and Rui Feng Chen. "Design and Experimental Investigation of Laminated Ceramic Composites with High Strength." In Composite Materials V, 21–25. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-451-0.21.

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Conference papers on the topic "Composite materials Strength of materials Composite construction"

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Hoffmeister, B., G. Sedlacek, Ch Müller, and B. Kühn. "High Strength Materials in Composite Structures." In Composite Construction in Steel and Concrete IV Conference 2000. Reston, VA: American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40616(281)78.

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Hanswille, G., and M. Lippes. "Design of Composite Columns Made of Concrete Filled Tubes with Inner Massive Core Profiles and High Strength Materials." In International Conference on Composite Construction in Steel and Concrete 2008. Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/41142(396)27.

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Yakovlev, Grigory, Jadvyga Keriene, Anastasiia Gordina, Irina Polyanskikh, and Milan Bekmansurov. "Efficient Eco-friendly Composite Fluorine Anhydrite-Based Materials." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.009.

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The paper presents possible ways of utilizing technogenic waste – fluorine anhydrite – by its use in production of dry mortars and piece goods from lightweight concrete with expanded polystyrene, as a organic filler, for low-rise construc-tion. The developed dry mortars are based on fluorine anhydrite binder and complex modifier comprising curing activator (sulfate or alkaline) and finely dispersed additive. The fluorine anhydrite-based compositions have improved physical and performance characteristics, including the improved strength and average density and reduced water absorption compared to the control composition. The developed lightweight anhydrite polystyrene concrete has the density grade of 700 kg/m3 and good vapor and gas permeability. The concrete is stabile while using and fire safe, because each granule of expanded poly-styrene is coated with anhydrite matrix, and has the strength sufficient for structural and heat insulating slabs and blocks. All mentioned compositions are eco-friendly and are in great demand for low-rise construction. Therefore the manufacturing of these compositions will consume a large amount of technogenic waste and will reduce the environmental load on the region where the waste is located.

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Xue, Cuizhen, Aiqin Shen, Xueying Zhao, Hui Li, and Chenguang Wan. "Effects of Construction Waste Composite Powder Materials on the Strength and Shrinkage Performance of C20 Concrete." In 2015 International Symposium on Material, Energy and Environment Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/ism3e-15.2015.35.

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Gupta, Anuj, and Harishchandra Thakur. "Wood - Concrete Composite for Thermally Insulated Building Construction Material." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87340.

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One of the important parameters in the reduction of greenhouse gas emission can be considered as the energy efficiency of the building. The building sector is constantly innovating in its use of materials with regards to sustainability. There is a need to use cost-effective, environmentally friendly materials and technologies which lessen the impact of a construction in terms of its use of non-renewable resources and energy consumption. For the reduction in energy consumption, thermally insulating materials can be installed inside the building envelope. It prevents heat loss and provides thermal comfort for the occupants. The introduction of the organic waste materials for thermal insulation is recent and little is known for their environmental effect in comparison with the conventional materials. Present study consists of experimental analysis to investigate the composition of wood powder and ash brick as a brick. Different modifications have been performed to determine the best methodology for the change in standard ash brick. The study has been concluded with the help of heat transmission factor and compressive strength.

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Lukash, A. A., N. P. Lukuttsova, K. P. Kolotvin, K. V. Razrezov, and A. Felluh. "SOFTWOOD COMPOSITES FOR CONSTRUCTION." In Modern machines, equipment and IT solutions for industrial complex: theory and practice. Voronezh State University of Forestry and Technologies named after G.F. Morozov, Voronezh, Russia, 2021. http://dx.doi.org/10.34220/mmeitsic2021_74-79.

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The article deals with the issues of secondary use of industrial waste from the processing of soft hardwood wood. It is shown that the disposal of man-made waste in landfills is undesirable, and the use of wood waste to generate heat for heating is limited to the autumn-winter period. It is proved that it is most expedient to make composites from the waste of processing soft hardwood wood, since the need for inexpensive building materials is constantly increasing. Wood- cement materials from soft-leaved wood are practically not produced due to the presence of water- soluble saccharides, which worsen the process of hydration of cement. It is proposed to use binders that harden quickly in the production of composites made of soft hardwood. To exclude the negative influence of the extracted substances, it is proposed to use urea-formaldehyde glue as a binder. The mathematical dependence of the compressive strength of a composite made of soft hardwood on the glue consumption, wood consumption and the duration of exposure after molding is obtained. The parameters of the composite manufacturing mode are set: wood consumption-190 ... 195 kg/m3, urea-formaldehyde glue consumption-262...270 kg/m3; the duration of exposure after molding – 6 days. Methods for reducing the release of free formaldehyde from composites have been identified. It was found that in the steam-air mixture after 12 days of exposure of the chip-and- glue composite, there are no previously detected micro-impurities of formaldehyde, and the chip- and-glue composite can be used in construction without restrictions.

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Hospodarova, Viola, Nadezda Stevulova, Vojtech Vaclavik, Tomas Dvorsky, and Jaroslav Briancin. "Cellulose Fibres as a Reinforcing Element in Building Materials." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.104.

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Nowadays, construction sector is focusing in developing sustainable, green and eco-friendly building materials. Natural fibre is growingly being used in composite materials. This paper provides utilization of cellulose fibres as reinforcing agent into cement composites/plasters. Provided cellulosic fibres coming from various sources as bleached wood pulp and recycled waste paper fibres. Differences between cellulosic fibres are given by their physical characterization, chemical composition and SEM micrographs. Physical and mechanical properties of fibre-cement composites with fibre contents 0.2; 0.3and 0.5% by weight of filler and binder were investigated. Reference sample without fibres was also produced. The aim of this work is to investigate the effects of cellulose fibres on the final properties (density, water absorbability, coefficient of thermal conductivity and compressive strength) of the fibrecement plasters after 28 days of hardening. Testing of plasters with varying amount of cellulose fibres (0.2, 0.3 and 0.5 wt. %) has shown that the resulting physical and mechanical properties depend on the amount, the nature and structure of the used fibres. Linear dependences of compressive strength and thermal conductivity on density for plasters with cellulosic fibres adding were observed.

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Pyrzowski, Łukasz, and Mikołaj Miskiewicz. "Modern GFRP Composite Footbridges." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.143.

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Application of GFRP composites in civil engineering is still not large but already noticeable. Advantages of this material, such as: low volume weight, relatively high stiffness and strength, well fatigue resistance, easiness in shaping, high material damping and high environmental resistance, make it attractive for bridge and in particular footbridge designers. It is estimated that nowadays in the world there are realized hundreds of bridges, the construction of which, whole or in part is made of GFRP. Most of them are small span structures. However, it is possible to find some interesting designs. The paper presents an overview of the most spectacular examples of footbridge structures, in which the GFRP materials plays a key role. The few examples are: Aberfeldy Footbridge in Scotland, the world's largest structure of this kind; Lleida Pedestrian Bridge, the longest arch bridge made out standard GFRP pultruded profiles or EXPO Footbridge in Lisbon, truss bridge of 30 m span length. The last example is the footbridge designed and constructed by polish consortium Fobridge. The footbridge, which arose as a result of scientific project was studied in a great details taking into account, among others: material testing, validation studies and load tests.

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Snyder, James F., Daniel J. O’Brien, Daniel M. Baechle, Daniel E. Mattson, and Eric D. Wetzel. "Structural Composite Capacitors, Supercapacitors, and Batteries for U.S. Army Applications." In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-315.

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Structural capacitors, supercapacitors, and batteries are fabricated and tested, using modified materials and processes based on conventional fiber-reinforced polymer matrix composites. Printed circuit board prepregs are used to create structural capacitors that demonstrate good dielectric energy density and mechanical stiffness and strength. Structural supercapacitors are created using carbon fabric electrodes and a liquid-plasticized, epoxy polymer electrolyte. A similar construction is used to create structural batteries, by substituting LiFePO4-coated carbon fiber fabric as cathodes opposed to unmodified carbon fiber anodes. Structural batteries and supercapacitors show basic electrochemical and mechanical functionality. However, significant additional work is required to improve their quantitative performance to values of practical engineering value.

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Vipulanandan, Cumaraswamy, and Srisothinathan Pakeetharan. "Designing Multifunctional Polymer Composite for Disaster Monitoring." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89782.

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In this study, a piezoresistive structural sensor (multifunctional material) was developed and a cantilever beam element with varying cross sections was designed and tested to measure low pressures for use during disaster events such as hurricanes. The piezoresistive structural polymer composite material developed in this study had a compressive strength of over 65 MPa (9425 psi), considered to be stronger than the standard construction materials. Also the piezoresistive material was over 30 times more sensitive than the resistance strain gages in detecting strain. The compressive stress-strain relationship of the polymer composite was modeled using a non-linear relationship. The constitutive behavior of the piezoresistive material was modeled using incremental nonlinear stress-resistivity relationship. The structural response of the cantilever beam with varying cross sections was analyzed using the finite element method. With the newly developed cantilever beam element it was possible to magnify the piezoresistive response and detect applied pressure as small as 1.4 kPa (∼0.2 psi) with a change in electrical resistivity of 0.5%.

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Reports on the topic "Composite materials Strength of materials Composite construction"

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Thompson, A. W., I. M. Bernstein, and A. Voelkel. Fundamentals of Interfacial Strength in Composite Materials. Fort Belvoir, VA: Defense Technical Information Center, November 1987. http://dx.doi.org/10.21236/ada198626.

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Thompson, A. W., and I. M. Bernstein. Fundamentals of Interfacial Strength in Composite Materials. Fort Belvoir, VA: Defense Technical Information Center, May 1990. http://dx.doi.org/10.21236/ada226701.

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Groves, S. E. Preliminary evaluation of the strength of pin-joints in laminated composite materials. Office of Scientific and Technical Information (OSTI), March 1989. http://dx.doi.org/10.2172/7072288.

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Jurek, Robert J., and David B. Curliss. Innovative Approach for High Strength, High Thermal Conductive Composite Materials: Data Base. Fort Belvoir, VA: Defense Technical Information Center, November 2013. http://dx.doi.org/10.21236/ada592001.

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Thornell, Travis, Charles Weiss, Sarah Williams, Jennifer Jefcoat, Zackery McClelland, Todd Rushing, and Robert Moser. Magnetorheological composite materials (MRCMs) for instant and adaptable structural control. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38721.

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Magnetic responsive materials can be used in a variety of applications. For structural applications, the ability to create tunable moduli from relatively soft materials with applied electromagnetic stimuli can be advantageous for light-weight protection. This study investigated magnetorheological composite materials involving carbonyl iron particles (CIP) embedded into two different systems. The first material system was a model cementitious system of CIP and kaolinite clay dispersed in mineral oil. The magnetorheological behaviors were investigated by using parallel plates with an attached magnetic accessory to evaluate deformations up to 1 T. The yield stress of these slurries was measured by using rotational and oscillatory experiments and was found to be controllable based on CIP loading and magnetic field strength with yield stresses ranging from 10 to 104 Pa. The second material system utilized a polystyrene-butadiene rubber solvent-cast films with CIP embedded. The flexible matrix can stiffen and become rigid when an external field is applied. For CIP loadings of 8% and 17% vol %, the storage modulus response for each loading stiffened by 22% and 74%, respectively.

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