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Artigos de revistas sobre o tema "Composite construction Testing"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 30 de janeiro de 2023

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1

Wei, Hu, Hu Minggang, and He Qun. "Quasi-static testing of composite masonry construction." Building Research & Information 27, no. 2 (March 1999): 120–23. http://dx.doi.org/10.1080/096132199369589.

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Lusiak, Tomasz, Andrej Novák, Michal Janovec, and Martin Bugaj. "Measuring and Testing Composite Materials Used in Aircraft Construction." Key Engineering Materials 904 (November 22, 2021): 161–66. http://dx.doi.org/10.4028/www.scientific.net/kem.904.161.

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This paper is focused on the use of special composite materials for the construction of aircraft components. It focuses on measuring and testing the strength of reinforced composite materials used in damaged aircraft parts repairs. To determine the layer required to repair a part of the aircraft, it is necessary to know the strength limit of the material and its parts. The article describes experimental measurements of manufactured composite samples that have been subjected to tensile stress. Aim of the performed tensile tests was to determine the maximum tensile stress that the composite mate

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BAIER, Andrzej, and Sławomir ŻÓŁKIEWSKI. "GRINDING TESTING OF COMPOSITE MATERIALS." Scientific Journal of the Military University of Land Forces 159, no. 1 (January 3, 2011): 21–36. http://dx.doi.org/10.5604/01.3001.0002.2852.

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Grinding testing is one of the most important tests of materials applied for contact with other elements. The subject matter is limited to grinding testing and this is only the beginning of complex testing of composite materials. In this article, the tested composite materials are epoxide and polyester laminates. The selected materials can be put into use in the wagon sides construction. This article includes a proposal for a laboratory stand for comparative grinding testing and presents sample test results.

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Sosa, Edward D., Erica S. Worthy, and Thomas K. Darlington. "Microwave Assisted Manufacturing and Repair of Carbon Reinforced Nanocomposites." Journal of Composites 2016 (October 13, 2016): 1–9. http://dx.doi.org/10.1155/2016/7058649.

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We report a composite capable of advanced manufacturing and damage repair. Microwave energy is used to induce thermal reversible polymerization of the matrix allowing for microwave assisted composite welding and repair. Composites can be bonded together in just a few minutes through microwave welding. Lap shear testing demonstrates that microwave welded composites exhibit 40% bond strength relative to composites bonded with epoxy resin. Double cantilever beam testing shows 60% recovery in delamination strength after microwave assisted composite repair. The interfacial adhesion and composite re

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Gong, Xiaozhou, Pengying Pei, Yu Hu, and Xiaogang Chen. "Experimental investigation of low velocity impact on textile cellular composite with different energy construction." Journal of Industrial Textiles 48, no. 6 (January 22, 2018): 1009–23. http://dx.doi.org/10.1177/1528083718754900.

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Cellular composite, with an array of regular hexagonal cells in the cross section, is a type of textile composites having the advantage of being light weight and energy absorbent over the solid composite materials. However, when it is under the same energy level of low velocity impact with different tup mass and velocity, its behavior is yet unknown. In the experiment, four groups of samples, with twelve geometrical variants have been systematically created for the impact testing. The impact test is running in two categories with one type of low velocity impact with initial velocity of 5.5 m/s

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Xiang, Zhenglong, Hongrun Wu, and Fei Yu. "A Genetic Algorithm-Based Approach for Composite Metamorphic Relations Construction." Information 10, no. 12 (December 10, 2019): 392. http://dx.doi.org/10.3390/info10120392.

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The test oracle problem exists widely in modern complex software testing, and metamorphic testing (MT) has become a promising testing technique to alleviate this problem. The inference of efficient metamorphic relations (MRs) is the core problem of metamorphic testing. Studies have proven that the combination of simple metamorphic relations can construct more efficient metamorphic relations. In most previous studies, metamorphic relations have been mainly manually inferred by experts with professional knowledge, which is an inefficient technique and hinders the application. In this paper, a ge

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Jutila, Aarne, Risto Mäkipuro, and Lauri Salokangas. "Testing a Wood-Concrete Composite Bridge." Structural Engineering International 7, no. 4 (November 1997): 275–77. http://dx.doi.org/10.2749/101686697780494635.

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Geringer, J. W., Y. Katoh, S. Gonczy, T. Burchell, M. Mitchell, M. Jenkins, and W. Windes. "ASME Code Rules and ASTM Standards Integration for Ceramic Composite Core Materials and Components¹." Journal of Physics: Conference Series 2048, no. 1 (October 1, 2021): 012020. http://dx.doi.org/10.1088/1742-6596/2048/1/012020.

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Abstract Fiber-reinforced ceramic matrix composites have many desirable properties for high-temperature nuclear applications, including excellent thermal and mechanical properties and reasonable to outstanding radiation resistance. Over the last 20 years, the use of ceramic composite materials has already expanded in many commercial nonnuclear industries as fabrication and application technologies mature. The new ASME design and construction rules under Section III, Subsection HH, Subpart B lay out the requirements and criteria for materials, design, machining and installation, inspection, exa

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Gillespie, J. W., D. A. Eckel, W. M. Edberg, S. A. Sabol, D. R. Mertz, M. J. Chajes, H. W. Shenton, et al. "Bridge 1-351 over Muddy Run: Design, Testing, and Erection of an All-Composite Bridge." Transportation Research Record: Journal of the Transportation Research Board 1696, no. 1 (January 2000): 118–23. http://dx.doi.org/10.3141/1696-52.

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Bridge 1.351 on Business Route 896 in Glasgow, Delaware, was replaced with one of the first state-owned all-composite bridges in the nation. Composites are lightweight construction materials that do not corrode, which results in benefits such as ease of construction and reduced maintenance costs. A summary of the design, large-scale testing, fabrication, erection, and monitoring of this bridge is presented. The bridge was designed to AASHTO load and resistance factor design specifications. A methodology was developed to incorporate the engineering properties of these unique composite materials

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Bosák, Lukáš, and Milan Palko. "Wall Panel Made of Bio-composites." MATEC Web of Conferences 279 (2019): 02010. http://dx.doi.org/10.1051/matecconf/201927902010.

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Sustainability is currently an important part of the building industry. The development of new building constructions and the use of ecological materials is a very popular topic in this area. One example of organic material are natural fibres bio-composites. Bio-composite materials are currently used in the form of laminates mainly used in the sport and furniture industries. This article addresses their use in the building industry as the outer envelope of buildings. The article deals with the testing of the influence of UV radiation and moisture on the degradation of Bio-composites with recom

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Ahmad, Hilton, and Khairi Supar. "Experimental Strength of Woven Fabric Kenaf Composite Plates with Different Stacking Sequences." Applied Mechanics and Materials 833 (April 2016): 27–32. http://dx.doi.org/10.4028/www.scientific.net/amm.833.27.

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Awareness on implementing sustainable construction materials has risen significantly leading to increased renewable materials used commercially. Kenaf fibers are potentially used as composite reinforcements and combined with epoxy polymer to produce an advanced engineering material that may offer superior specific stiffness (and strength) to its density. Other advantages include renewability, easy during fabrication handling stage and relatively cheaper than commercial fibers counterparts. Current project aims to investigate mechanical strength of woven fabric kenaf composites coupons with dif

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Lindner, Marco, Konrad Vanselow, Sandra Gelbrich, and Lothar Kroll. "Fibre-reinforced polymer stirrup for reinforcing concrete structures." Technologies for Lightweight Structures (TLS) 3, no. 1 (January 24, 2020): 17–24. http://dx.doi.org/10.21935/tls.v3i1.117.

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Fibre-plastic composites offer an interesting alternative to concrete reinforcement. In order to expandthe application spectrum of reinforcing elements in fibre composite construction, a new steel-free bracingsystem with reduced radii of curvature was developed. An improvement in load carrying capacity couldbe proven in extensive investigations based on international testing methods and verified by practicaltests. With the help of newly reinforced precast concrete elements from the area of waterways and trafficroutes, a high potential for lightweight construction and resource efficiency can be

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Bakht, Baidar, and Ray Krisciunas. "Testing a Prototype Steel-Wood Composite Bridge." Structural Engineering International 7, no. 1 (February 1997): 35–41. http://dx.doi.org/10.2749/101686697780495391.

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Weiler, Lia, and Anya Vollpracht. "Environmental Compatibility of Carbon Reinforced Concrete: Irrigated Construction Elements." Key Engineering Materials 809 (June 2019): 314–19. http://dx.doi.org/10.4028/www.scientific.net/kem.809.314.

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To foster a sustainable deployment of the innovative composite material ‘carbon concrete composite’ in the building sector, it is necessary to ensure its resource efficiency and environmental compatibility. The Institute for Building Materials Research of the RWTH Aachen University is therefore investigating the leaching behavior of this material, especially for the case of irrigated façade elements. Laboratory and outdoor exposure tests are run to determine and assess the heavy metal and trace element emissions by leaching. Feasible interconnections between laboratory and outdoor examination

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LINDE, PETER. "VIRTUAL TESTING OF STIFFENED COMPOSITE PANELS AT AIRBUS." International Journal of Structural Stability and Dynamics 10, no. 04 (October 2010): 589–600. http://dx.doi.org/10.1142/s0219455410003634.

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The steady increase of composite parts in civil aircraft over the last three decades has recently been followed by a radical increase of weight percentage composites in the structure. In the most recent long range aircraft under development by both Boeing and Airbus, most major structure components, not only of the wings but also of the fuselage, now consist of composites. This necessitates an increased use of efficient structural simulation capabilities. One important aspect of this is the virtual testing of shear compression panels at Airbus, which will be presented here. Having served well

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Gouasmi, M. T., A. S. Benosman, Hamed Taïbi, N. Kazi Tani, and Mohammed Belbachir. "Destructive and Non-Destructive Testing of an Industrial Screed Mortar Made with Lightweight Composite Aggregates WPLA." International Journal of Engineering Research in Africa 33 (November 2017): 140–58. http://dx.doi.org/10.4028/www.scientific.net/jera.33.140.

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Today, only a very small portion of plastic waste is recycled, while huge quantities remain untreated and are becoming increasingly worrying. The search for other alternatives is still an urgent necessity so that these wastes can be reduced to the maximum; their valorization may be the best solution. This study concerns a new technique for the valorization of polyethylene terephthalate (PET) plastic bottle wastes, in order to design a composite material, i.e. siliceous sand-PET, which then gives a Waste Plastic Lightweight Aggregate “WPLA”. Our hope is to provide solutions to specific and gene

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Javadian, Alireza, Hortense Le Ferrand, Dirk E. Hebel, and Nazanin Saeidi. "Application of Mycelium-Bound Composite Materials in Construction Industry: A Short Review." SOJ Materials Science & Engineering 7, no. 2 (October 22, 2020): 1–9. http://dx.doi.org/10.15226/sojmse.2020.00162.

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Mycelium-bound composite materials are a new class of sustainable and affordable biocomposites that have been recently introduced into packaging, fashion, and architecture as alternative to traditional synthetic materials. In recent years extensive investigation and research studies have been dedicated to explore methods of production and processing as well as to find potential applications for mycelium-bound composite materials. However, application of this novel biocomposite within the construction industry has been limited to only small-scale prototypes and exhibition installations. The pro

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Ji, Shunhui, Liming Hu, Yihan Cao, Pengcheng Zhang, and Jerry Gao. "Verifiable Model Construction for Business Processes." International Journal of Software Engineering and Knowledge Engineering 31, no. 07 (July 2021): 1017–42. http://dx.doi.org/10.1142/s0218194021500315.

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Business process specified in Business Process Execution Language (BPEL), which integrates existing services to develop composite service for offering more complicated function, is error-prone. Verification and testing are necessary to ensure the correctness of business processes. SPIN, for which the input language is PROcess MEta-LAnguage (Promela), is one of the most popular tools for detecting software defects and can be used both in verification and testing. In this paper, an automatic approach is proposed to construct the verifiable model for BPEL-based business process with Promela langu

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19

Woytowich, David L., Martin W. King, Myron G. Britton, and Jan A. Oleszkiewicz. "Accelerated testing of a filled polyester E-glass composite in acidic environments." Canadian Journal of Civil Engineering 18, no. 5 (October 1, 1991): 799–809. http://dx.doi.org/10.1139/l91-097.

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This paper describes the results of an accelerated laboratory investigation to measure the rate of deterioration of a newly developed filled plastic composite exposed to acidic (sewage) environments. The specific objective was to compare the relative rates of deterioration of an experimental filled filament wound (FFW) polyester composite immersed in sulfuric (pH 2.23) and acetic (pH 2.22) acid environments at 45 °C. Deterioration was measured in terms of changes in wet specimen weight, loss in dried (soluble) material weight and mechanical properties, the extent of chemical dissolution, and t

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Morăraș, Ciprian, Catalin Andrei Tugui, Rozina Steigmann, Paul Doru Barsanescu, Bogdan Leitoiu, and Viorel Goanta. "Mechanical Testing of GFRP Composite Materials Used in Wind Turbine Blades Construction." Advanced Materials Research 1157 (February 2020): 142–48. http://dx.doi.org/10.4028/www.scientific.net/amr.1157.142.

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The paper proposes to present the results of the evaluation of glass fiber reinforced plastics (GFRP) used in the construction of wind turbine blades. In a wind turbine, the blades are the most exposed to damages and the defects which appear are various and are connected with the type of manufacture, simple/complex loading, environmental conditions etc. In order to increase the lifetime span and to analyze the degradation phenomena during the materials functioning, destructive evaluation tests are performed to determine the mechanical property, by testing pure shear on specimens Iosipescu, fro

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21

Oravec, Pavel, and Michal Hamala. "Acoustic Qualities of a Composite Timber - Concrete Ceiling Construction." Advanced Materials Research 649 (January 2013): 273–76. http://dx.doi.org/10.4028/www.scientific.net/amr.649.273.

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This paper describes a modern composite timber - concrete ceiling construction. It also compares and evaluates the acoustic qualities (sound insulation and a level of acoustic pressure of impact sound), which were measured on a sample of a 3 x 3.6 m size in the experimental measurements in the acoustics testing laboratory certified by CSI Zlin. In the first case, the construction is evaluated as a supporting ceiling panel without any additional layers. In the second and third option it is evaluated as a ceiling construction with structural modifications (a supporting ceiling with some floor la

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Popov, A. V., V. Yu Voloshina, K. A. Zhuravsky, and M. A. Labina. "Acoustic Emission Method of Diagnostics of Structures Made of Composite Materials Based on Invariants." Advanced Engineering Research 22, no. 4 (January 9, 2004): 331–37. http://dx.doi.org/10.23947/2687-1653-2022-22-4-331-337.

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Introduction. Composite materials are the main way to reduce the weight of the aircraft structure and improve its flight performance. Methods of non-destructive testing enable to assess the technical condition of composite materials, as well as to determine stress concentrators in them to make a decision on the further operation of this control object. The paper presents an analysis of the use of composite materials in the aircraft design and ways to improve their flight performance through the application of composites. An acoustic-emission method for assessing crack resistance based on invar

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ABRAMOV, I. V., Yu V. TURYGIN, P. V. LEKOMTSEV, A. V. ROMANOV, A. V. BUCHKIN, and Z. S. SAIDOVA. "Some Results of Testing Anchoring Devices Used in Composite Reinforcement Tensioning." Stroitel'nye Materialy 767, no. 1-2 (2019): 64–69. http://dx.doi.org/10.31659/0585-430x-2019-767-1-2-64-69.

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Dragan, Krzysztof, and Piotr Synaszko. "In-Service Flaw Detection and Quantification in the Composite Structures of Aircraft." Fatigue of Aircraft Structures 2009, no. 1 (July 26, 2009): 37–41. http://dx.doi.org/10.2478/v10164-010-0003-0.

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In-Service Flaw Detection and Quantification in the Composite Structures of Aircraft Taking into consideration the increased usage of composites for aircraft structures there is a necessity for gathering information about structural integrity of such components. During the manufacturing of composites as well as during in service and maintenance procedures there is a possibility for damage occurrence. There is a large number of failure modes which can happen in such structures. These failure modes affect structural integrity and durability. In this work modern approach for detection of composit

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Prabakaran, E., D. Vasanth Kumar, A. Jaganathan, P. Ashok Kumar, and M. Veeerapathran. "Analysis on Fiber Reinforced Epoxy Concrete Composite for Industrial Flooring – A Review." Journal of Physics: Conference Series 2272, no. 1 (July 1, 2022): 012026. http://dx.doi.org/10.1088/1742-6596/2272/1/012026.

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Abstract Fiber composites are the having an good scope in construction industry as they are light in weight, durable, economic, and resistant to temperatures. Many researchers concentrate on the composites for the industrial flooring with the fibers. The main objective of this paper is to review the fiber reinforced epoxy for industrial flooring. Epoxy can be used as flooring elements in industries as they deliver good performance. Since, natural and synthetic fibres can be used with filler matrices, which are very much cheaper than the conventional steel fibres reinforced composite concrete f

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Rupal, Ashmita, Sivansankara Rao Meda, Abhishek Gupta, Ishan Tank, Ashish Kapoor, Sanjay Kumar Sharma, T. Sathish, and P. Murugan. "Utilization of Polymer Composite for Development of Sustainable Construction Material." Advances in Materials Science and Engineering 2022 (June 8, 2022): 1–15. http://dx.doi.org/10.1155/2022/1240738.

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Polymers have gained an extensive application due to their versatility of properties and benefits. Hence, the polymer blends and composites reinforced with different infusions at different scales, macro to nanofillers, can be fabricated, leading to specific tailormade applications. The main objective of this investigation is to overview the various studies carried out to reuse the waste materials like electroplating sludge, fly ash, etc. For the development of construction materials. This paper summarizes the use of polymers in composite material formulations for the development of building ma

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Hosur, M. V., Jessie B. Mayo Jr., E. Wetzel, and S. Jeelani. "Studies on the Fabrication and Stab Resistance Characterization of Novel Thermoplastic-Kevlar Composites." Solid State Phenomena 136 (February 2008): 83–92. http://dx.doi.org/10.4028/www.scientific.net/ssp.136.83.

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Kevlar has demonstrated the ability to protect well against ballistic threats but has low resistance to puncture. Correctional Kevlar has shown good resistance to puncture. However, the fabric is expensive, difficult to manufacture because of its tight weave construction, and has limited protection against ballistic threats. In an effort to produce materials that are less bulky, more flexible, and resistant to puncture, thermoplastic-Kevlar (TP-Kevlar) composites have been examined. Kevlar fabric was impregnated with thermoplastic film using a hot press to produce the composites. Static and dy

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Simanjorang, Michael Rivaldo, Heru Susanto, and Muhammad Luqman Bukhori. "DESIGN AND CONSTRUCTION OF MIXER WITH VARIABLE SPEED FOR MANUFACTURING NANOPARTICLE COMPOSITE MATERIALS." Teknika STTKD: Jurnal Teknik, Elektronik, Engine 8, no. 2 (November 15, 2022): 257–66. http://dx.doi.org/10.56521/teknika.v8i2.653.

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Variable speed mixer machine is a tool to help stir and mix resin with nanoparticles, design and build of the mixer plan the design of the variable speed mixer which aims to make the resin viscosity more evenly distributed in the manufacture of composites and determine the performance of the equipment produced by the variable speed mixer. This is because in manual mixing the mixed materials such as resin nanoparticles have not been mixed evenly or homogeneously. This mixer design tool can be used as a basis for developing work in the field of composite mixing, problems in composite manufacturi

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Szymański, Rafał. "Non-Destructive Testing of Thermoplastic Carbon Composite Structures." Transactions on Aerospace Research 2020, no. 1 (March 1, 2020): 34–52. http://dx.doi.org/10.2478/tar-2020-0003.

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AbstractThe article is in line with the contemporary interests of companies from the aviation industry. It describes thermoplastic material and inspection techniques used in leading aviation companies. The subject matter of non-destructive testing currently used in aircraft inspections of composite structures is approximated and each of the methods used is briefly described. The characteristics of carbon preimpregnates in thermoplastic matrix are also presented, as well as types of thermoplastic materials and examples of their application in surface ship construction. The advantages, disadvant

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Zhou, J., A. Pellegrino, U. Heisserer, P. W. Duke, P. T. Curtis, J. Morton, N. Petrinic, and V. L. Tagarielli. "A new technique for tensile testing of engineering materials and composites at high strain rates." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 475, no. 2229 (September 2019): 20190310. http://dx.doi.org/10.1098/rspa.2019.0310.

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A new test technique and bespoke apparatus to conduct high strain rate measurements of the tensile response of materials are presented. The new test method is applicable to brittle solids and composites as well as high-performance fibres, yarns and tapes used in composite construction. In this study, the dynamic response of monolithic poly(methyl methacrylate) and unidirectional composites based on Dyneema® tape, Dyneema® SK75 yarn and Kevlar® 49 yarn are explored. The technique allows early force equilibrium and yields valid tensile stress–strain curves, which include part of the elastic mate

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Sahmenko, Genadijs, Maris Sinka, Ugis Paurins, and Diana Bajare. "Production Technology of Ecological High Performance Fibre Composite Construction Materials." Journal of Physics: Conference Series 2423, no. 1 (January 1, 2023): 012005. http://dx.doi.org/10.1088/1742-6596/2423/1/012005.

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Abstract Eco materials derived from natural plant fibres and mineral binders are an alternative solution for modern ecological construction. This research is devoted to developing production technology for ecological high-performance fibre composite materials based on hemp shives and magnesium binder. The proposed composite wall structures consist of outer envelope layers made from dense hemp composite and middle insulation layer made from a lightweight hemp composite. The article describes the process of manufacturing a hemp composite boadr and the process of creating a three-layer structure

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Durrans, Daniel, Denise Lee, and Monower Sadique. "APPLICATION OF CONCRETE ENCASED ECOBRICK BLOCKS IN THE UK’S CONSTRUCTION INDUSTRY." Kufa Journal of Engineering 13, no. 4 (October 14, 2022): 70–89. http://dx.doi.org/10.30572/2018/kje/130406.

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The construction industry within the UK is at the forefront of new and alternative materials, which aid in efficient, sustainable and environmental-friendly construction projects. The concept of filling a single use plastic bottle with plastic waste and encasing it within a concrete surround, producing a composite block meets all three objectives. Due to the lack of ecobrick research within the UK, it became the catalyst for researching the concrete encased ecobrick block. At 7 day compressive testing the composite blocks were all weaker than the control samples and at 28 days the results were

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Watkins, Stetson, and James Bittner. "Resonance Bond Testing: Theory and Application." Materials Evaluation 79, no. 6 (June 1, 2021): 512–19. http://dx.doi.org/10.32548/2021.me-04225.

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Resonance bond testing is a nondestructive testing (NDT) technique that is used to detect disbonds, delaminations, and other voids in composite materials. The aerospace industry has seen an increase in the use of carbon fiber reinforced plastics (CFRP) for aircraft and spacecraft construction. Composite materials offer many advantages over traditional metallic structures, which include weight savings, increased strength, design for specific load paths, and the ability to easily construct geometrically complex structures. Resonance bond testing has many established uses for metallic structures

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Al-Azad, Nahiyan, and Mohd Shah Mohd. Kamal. "Investigation of specific energy absorption of natural fiber honeycomb sandwich structure composite as building construction material application." IOP Conference Series: Materials Science and Engineering 1217, no. 1 (January 1, 2022): 012012. http://dx.doi.org/10.1088/1757-899x/1217/1/012012.

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Abstract The usage of incorporating natural fibre in composite material has seen some potential to be used as a future building construction material due to its recyclability, lightweight and high-reliability feature. However, the issue of implementing natural fibre as building construction material in composites material concerns the structural integrity of the material. As the characteristics of the natural fibre honeycomb composite have been discovered more in terms of properties which ranges from its physical and chemical structural composition to the quasi-static impact collapse of the ma

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SULOCHANI, R. M. N., R. A. JAYASINGHE, A. H. L. R. NILMINI, and Gayan Priyadarshana. "Recent Developments in Textile Reinforced Polymer Composites." Asian Journal of Chemistry 34, no. 3 (2022): 487–96. http://dx.doi.org/10.14233/ajchem.2022.23504.

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This article provides an overview of using textile materials as reinforcement in polymer composites. A considerable amount of research studies on this topic have been conducted to date. The different types of textile materials and polymer matrices used in composite development have been discussed. The fabrication techniques used in the development of composites, the properties, testing methods and the specific standards have been critically reviewed. Furthermore, the suitable applications of textile reinforced polymer composites are reviewed. This review highlights the potential of textile mat

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Pike, Graham E., Nicola A. Brace, Jim Turner, and Annelies Vredeveldt. "The Effect of Facial Composite Construction on Eyewitness Identification Accuracy in an Ecologically Valid Paradigm." Criminal Justice and Behavior 46, no. 2 (November 8, 2018): 319–36. http://dx.doi.org/10.1177/0093854818811376.

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Previous research has produced equivocal results with regard to whether facial composite creation affects subsequent eyewitness identification accuracy, but the most widely publicized view is that creating a composite impairs the ability to later recognize the perpetrator from a line-up. In our first experiment, we examined this effect using several ecologically valid elements including a live staged crime, trained police officers, and a long delay between construction and identification, albeit with only a short delay between crime and composite construction. Composite construction did not si

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Kong, Ing, Kay Min Khoo, Oliver Buddrick, Abdul Aziz Baharuddin, and Pooria Khalili. "Synthesis and Characterization of Red Mud and Sawdust Based Geopolymer Composites as Potential Construction Material." Materials Science Forum 923 (May 2018): 130–34. http://dx.doi.org/10.4028/www.scientific.net/msf.923.130.

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The aim of this study was to synthesize the geopolymer composites formed by two industrial wastes, namely red mud (RM) and saw dust (SD). SD was chemically treated with alkali for the removal of lignin and subsequently bleached, before forming composite with acid-modified RM. The composites were then characterized by using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetic analysis (TGA) and universal testing machine to study the morphology, chemical, thermal and mechanical properties. The FTIR spectrum showed that Si and Al from the raw materi

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Ryu, H. K., C. S. Shim, and S. P. Chang. "Testing a composite box-girder bridge with precast decks." Proceedings of the Institution of Civil Engineers - Structures and Buildings 157, no. 4 (August 2004): 243–50. http://dx.doi.org/10.1680/stbu.2004.157.4.243.

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Kutz, Philipp Werner, Jan Werner, and Frank Otremba. "Testing of Composite Material for Transport Tanks for LNG." Key Engineering Materials 809 (June 2019): 625–29. http://dx.doi.org/10.4028/www.scientific.net/kem.809.625.

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To reduce the emission of carbondyoxide (CO2) of combustion engines, liquefied naturalgas (LNG) is used as an alternative fuel. LNG is transported via truck, ship or railway for longdistances. Double walled stainless steel tanks are used for transportation, which are heavy and expensive.The vacuum insulation between the two walled structure ensures that the LNG stays liquid overthe transportation time (boiling point of LNG: −162 °C). This causes a high temperature differencebetween the transported good and the ambient air. A simplified tank construction is used to reduce the weight and price o

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De Corte, Wouter, and Jordi Uyttersprot. "FRP Bridges in the Flanders Region: Experiences from the C-Bridge Project." Applied Sciences 12, no. 21 (October 27, 2022): 10897. http://dx.doi.org/10.3390/app122110897.

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At the start of the C-Bridge project in 2018, the number of fibre-reinforced composite bridges in the Flanders region of Belgium was limited to a handful. These limited achievements were largely due to the poor knowledge of clients (public and private), project managers, design engineers, and contractors, which made the option of composites either unknown or still viewed with a certain degree of suspicion. In addition, there were no standards at the Belgian or European level for the design of such constructions. The C-Bridge project (roadmap into design, guidelines, and execution of composite

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Ayyasamy, Leema Rose, Anbarasu Mohan, Dhanasingh Sivalinga Vijayan, Agoramoorthy Sattainathan Sharma, Parthiban Devarajan, and Aravindan Sivasuriyan. "Finite element analysis of behavior and ultimate strength of composite column." Science and Engineering of Composite Materials 29, no. 1 (January 1, 2022): 176–82. http://dx.doi.org/10.1515/secm-2022-0017.

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Abstract Composite sections are found to be a novel technique in modern day scenario of construction. This stands tall than the ordinary and conventional type of constructions. Columns as a structural element play a vital role in structural frame. This research comments on the behavior of composite columns. The main objective of this study is to analyze the behavior of steel-encased concrete composite columns as experimentally under axial compression and the mode of failure under ultimate failure and yield point. The steel-concrete composite system combines the formability and rigidity of rein

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Breen, John E., Michael E. Kreger, Christopher D. White, and Gordon C. Clark. "Field evaluation and model test of a composite wing-girder bridge." Canadian Journal of Civil Engineering 14, no. 6 (December 1, 1987): 753–62. http://dx.doi.org/10.1139/l87-113.

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This paper presents the key observations and conclusions from the evaluation of an innovative "loose-fit" composite, post-tensioned concrete wing-girder bridge proposed for an elevated interstate highway expansion in an urban environment. The evaluation program included both testing to destruction of a 1/2-scale model of a partial span as well as construction monitoring and field testing at service load levels of a full-scale prototype two-span bridge. Results of both construction measurements and loading tests were compared with analytical predictions. Laboratory tests showed the composite be

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Dickson, Barry, Hota GangaRao, and Vijith Vijayachandran. "Laboratory Testing of Stress-Laminated Wood Decks on Steel Beams." Transportation Research Record: Journal of the Transportation Research Board 1575, no. 1 (January 1997): 47–52. http://dx.doi.org/10.3141/1575-07.

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Four different stress-laminated wood decks were laboratory-tested to measure composite action between deck and steel beams, transverse load distribution, performance of connectors, and deck construction cost. The models were subjected to cyclic loading varying from 9 to 89 kN. Static load tests were conducted after every 100,000 cycles. During static testing, strains and deflections in the beams were measured at 22, 44, 67, and 89 kN. The loss of tension in the connectors was also monitored after every 100,000 cycles. The readings were used to compare the composite action, load distribution, a

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Xiang, Xian Chao, Guo Sheng Jiang, and Chang Qi Zhu. "Testing Study on DJM Pile Composite Foundation under Flexible Load." Advanced Materials Research 168-170 (December 2010): 2513–17. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.2513.

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Dry jet mixing (DJM) piles are widely used in silt foundation treatment to improve foundation stability and control post-construction deformation. As the work mechanism of DJM composite foundation is very complex, though many useful calculation theories have achieved, the theoretical study of DJM pile composite foundation is still far behind engineering practice, the settlement and stress calculation precision is unsatisfied. Then it is still necessary to reveal the work mechanism of DJM pile comprehensively. A field test of DJM pile composite road foundation is carried out and many measuremen

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Latroch, N., A. S. Benosman, N. Bouhamou, B. Belbachir, Y. Senhadji, H. Taïbi, and M. Mouli. "Testing of Composite Mortars Based on Supplementary Cementitious Materials: Estimating Durability and Thermal Properties." International Journal of Engineering Research in Africa 27 (December 2016): 27–35. http://dx.doi.org/10.4028/www.scientific.net/jera.27.27.

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The growing need for building material resources, and the requirements to preserve the environment, in a vision of sustainable development, has become necessary to study reinforcement techniques, using composite materials. Using local organic or inorganic materials in construction fields and public works is particularly important. Polymer mortar composites (PMC) are usually employed in the building industry as finishing materials, tile adhesive (mortar-adhesive) or façade coating. In repair applications, the addition of soluble polymer (latex) allows improving the adhesion properties of the ma

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Luo, Ting, and Qiang Wang. "Effects of Graphite on Electrically Conductive Cementitious Composite Properties: A Review." Materials 14, no. 17 (August 24, 2021): 4798. http://dx.doi.org/10.3390/ma14174798.

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Electrically conductive cementitious composites (ECCCs) have been widely used to complete functional and smart construction projects. Graphite, due to its low cost and wide availability, is a promising electrically conductive filler to generate electrically conductive networks in cement matrixes. Cement-based materials provide an ideal balance of safety, environmental protection, strength, durability, and economy. Today, graphite is commonly applied in traditional cementitious materials. This paper reviews previous studies regarding the effects and correlations of the use of graphite-based mat

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Oravec, Pavel, and Michal Hamala. "Acoustic Qualities of a Ceiling From Prefabricated Timber – Concrete Composite Panels / Akustické Vlastnosti Stropu Z Prefabrikovaných Dřevo – Betonových Spřažených Panelů." Transactions of the VŠB – Technical University of Ostrava, Civil Engineering Series 12, no. 2 (December 1, 2012): 117–22. http://dx.doi.org/10.2478/v10160-012-0025-3.

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Abstract This article describes the acoustic qualities (sound insulation and a level of acoustic pressure of impact sound) composite construction, composite timber - concrete ceiling. The qualities of the ceiling construction were discovered in the experimental measurements in the acoustic testing laboratory certified by CSI Zlin on a sample of a 3 x 3,6 m size. One type of a floor composition was created. Three phases of measurement have been performed on the tested floor. The aim of the experiment was to determine whether the devised ceiling can be used as a separating element between apartm

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Joustra, Jelle, Conny Bakker, Riel Bessai, and Ruud Balkenende. "Circular Composites by Design: Testing a Design Method in Industry." Sustainability 14, no. 13 (June 30, 2022): 7993. http://dx.doi.org/10.3390/su14137993.

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The design of composite products for a circular economy is challenging. Materials such as glass-fibre-reinforced plastics have long product lifetimes but are hard to recycle. For the effective reuse and recycling of products, parts, and materials, recovery strategies must be selected and implemented in the product design stage. This extends the scope and complexity of the design process and requires additional skills from the designers. We developed a novel circular composites design method for products containing composite materials to support designers and improve product circularity. This m

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Zhang, Dongfang, Junhai Zhao, and Shuanhai He. "Cyclic Testing of Concrete-Filled Double-Skin Steel Tubular Column to Steel Beam Joint with RC Slab." Advances in Civil Engineering 2018 (July 26, 2018): 1–15. http://dx.doi.org/10.1155/2018/7126393.

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The design of composite joints for connecting concrete-filled double-skin tubular (CFDST) columns to steel beams supporting reinforced concrete (RC) slabs is presented in this paper. Five half-scale specimens were designed, including four composite joints with RC slab and one bare steel beam joint, and were tested under a constant axially compressive force and lateral cyclic loading at the top end of the column to evaluate their seismic behavior. The main experimental parameters were the construction of the joint and the type of the column. The seismic behaviors, including the failure modes, h

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Topič, Jaroslav, Zdeněk Prošek, Josef Fládr, Václav Nežerka, and Pavel Tesárek. "Replacement of Cement with Finely Ground Recycled Concrete: Influence on Mechanical Properties." Applied Mechanics and Materials 825 (February 2016): 69–72. http://dx.doi.org/10.4028/www.scientific.net/amm.825.69.

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The waste production from construction sites become very serious problem. Recycling is the best option for disposal of such waste, and the proper sorting and knowledge of the recycled concrete history allows its further use in the construction. The current studies are mostly focused on utilization of recycled concrete in the form of aggregate. The presented work is focused on the utilization of Finely Ground Recycled Concrete (FGRC) used as a filler and partial substitution for binder. Recycled concrete was ground from concrete railway sleepers in the Lavaris Company (Czech Republic). Through

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