Building Protection with Composite Materials Application

2017 ◽  
Vol 755 ◽  
pp. 286-291 ◽  
Author(s):  
Dávid Ágoston Balázs ◽  
Zoltán Nyikes ◽  
Tünde Kovács

Building protection on our century is very important because of the terrorist attacks. The old buildings in Europe aren’t enough strong again blast loads. Nowadays we know many different explosives and theirs effects of walls and human bodies. The detonation caused blast effect provokes building damage and fragmentation effects. The explosion caused damages, parts of bricks and fragments produce other secondary damage in other buildings and human bodies.It can’t protect the historical and old buildings by new walls and fences because of the cityscape. It needs to find new possibilities to improve the buildings resistance again blast effects. It needs a effectively thin and strong materials to reinforced the buildings walls. The new materials innovated by material science can be good solution for this project. These materials usually composites likes syntactic foams, spherical shells or carbon fields reinforced composites.

TAPPI Journal ◽  
2018 ◽  
Vol 17 (09) ◽  
pp. 507-515 ◽  
Author(s):  
David Skuse ◽  
Mark Windebank ◽  
Tafadzwa Motsi ◽  
Guillaume Tellier

When pulp and minerals are co-processed in aqueous suspension, the mineral acts as a grinding aid, facilitating the cost-effective production of fibrils. Furthermore, this processing allows the utilization of robust industrial milling equipment. There are 40000 dry metric tons of mineral/microfbrillated (MFC) cellulose composite production capacity in operation across three continents. These mineral/MFC products have been cleared by the FDA for use as a dry and wet strength agent in coated and uncoated food contact paper and paperboard applications. We have previously reported that use of these mineral/MFC composite materials in fiber-based applications allows generally improved wet and dry mechanical properties with concomitant opportunities for cost savings, property improvements, or grade developments and that the materials can be prepared using a range of fibers and minerals. Here, we: (1) report the development of new products that offer improved performance, (2) compare the performance of these new materials with that of a range of other nanocellulosic material types, (3) illustrate the performance of these new materials in reinforcement (paper and board) and viscosification applications, and (4) discuss product form requirements for different applications.


2019 ◽  
Vol 12 (1) ◽  
pp. 4-76 ◽  
Author(s):  
Krittirash Yorseng ◽  
Mavinkere R. Sanjay ◽  
Jiratti Tengsuthiwat ◽  
Harikrishnan Pulikkalparambil ◽  
Jyotishkumar Parameswaranpillai ◽  
...  

Background: This era has seen outstanding achievements in materials science through the advances in natural fiber-based composites. The new environmentally friendly and sustainability concerns have imposed the chemists, biologists, researchers, engineers, and scientists to discover the engineering and structural applications of natural fiber reinforced composites. Objective: To present a comprehensive evaluation of information from 2000 to 2018 in United States patents in the field of natural fibers and their composite materials. Methods: The patent data have been taken from the external links of US patents such as IFI CLAIMS Patent Services, USPTO, USPTO Assignment, Espacenet, Global Dossier, and Discuss. Results: The present world scenario demands the usage of natural fibers from agricultural and forest byproducts as a reinforcement material for fiber reinforced composites. Natural fibers can be easily extracted from plants and animals. Recently natural fiber in nanoscale is preferred over micro and macro scale fibers due to its superior thermo-mechanical properties. However, the choice of macro, micro, and nanofibers depends on their applications. Conclusion: This document presents a comprehensive evaluation of information from 2000 to 2018 in United States patents in the field of natural fibers and their composite materials.


2012 ◽  
Vol 583 ◽  
pp. 49-52
Author(s):  
Zhong Hai Wang ◽  
Ru Jian Yuan ◽  
Xiao Bing Fan

With the table tennis technical innovation and improvement of science, high-performance materials are used to manufacture of table tennis plate floor and help athletes have achieved better results. This article elaborated the wood composite materials’s impact on batting techniques through the analysis of the function of table tennis racket floor and its structure and capacity based on material science for provide the reference on manufacturing and selecting of table tennis racket.


2021 ◽  
Vol 1198 (1) ◽  
pp. 011001

Abbreviated name of the seminar conference: NNEP-2021 The purpose of the seminar is to discuss the latest achievements in fundamental and applied science in the development, manufacture, application of new materials and devices based on them. The spectra of the electromagnetic characteristics of materials and the electromagnetic response of structures made of these materials, in a wide frequency range, including THz range, are also considered. Special attention is paid to modern measuring instruments and teaching methods for high school students and graduate students. The first Russian-Belarusian International Seminar was held at the Belarusian State University in 2016 (Minsk), then at the Institute of Inorganic Chemistry SB RAS named after I. Nikolaeva A.V. in 2017 (Novosibirsk), at the Skolkovo Institute of Science and Technology in 2018 (Skolkovo), at the National Research Tomsk State University (TSU) in 2019 (Tomsk). Notable speakers: Dunaevsky G.E., Doctor of Technical Sciences, Professor, TSU, Tomsk. Kuzhir P.P., Ph.D., Belarusian State University (BSU), Minsk, Institute of Photonics, University of Eastern Finland Maksimenko S.A., Doctor of Physical and Mathematical Sciences, Professor, BSU, Minsk Nasibulin A.G., Doctor of Technical Sciences, Professor, Skolkovo Institute of Science and Technology, Moscow Okotrub A.V., Doctor of Physical and Mathematical Sciences, Professor of Novosibirsk State University (NSU), Novosibirsk Fedorov G.E., Doctor of Physical and Mathematical Sciences, Professor of Moscow State Pedagogical University, Moscow Institute of Physics and Technology, Moscow Minin I.V., Doctor of Physical and Mathematical Sciences, Professor, Siberian State University of Geosystems and Technologies, Novosibirsk Kuznetsov V.L., Ph.D. Associate Professor, NSU, Institute of Coal of the Siberian Branch of the RAS, Novosibirsk Nomoev A.V., Doctor of Physical and Mathematical Sciences, Institute of Physical Material Science of the Siberian Branch of the RAS, Ulan-Ude, Russia Bashkuev U.B., Professor, Institute of Physical Material Science of the Siberian Branch of the RAS, Ulan-Ude, Russia Suslyaev V.I., Ph.D., Associate Professor of TSU, Tomsk. Members of the Scientific and Organizing Committees: Chairman Suslyaev V.I., Ph.D., Associate Professor, TSU, Tomsk Deputy Chairman Minin O.V., Doctor of Physical and Mathematical Sciences, Professor, Novosibirsk Scientific Secretary Dotsenko O.A., Candidate of Physical and Mathematical Sciences, Associate Professor, TSU, Tomsk. Committee members: Kochetkova T.D., Ph.D., associate professor of TSU Badin A.V., Ph.D., associate professor of TSU Zhukov A.A., Ph.D., associate professor of TSU Wagner D.V., Ph.D., associate Professor of TSU Korovin E.Yu., Ph.D., associate professor of TSU Kuleshov G.E., Ph.D., associate professor of TSU Pavlova A.A., post-graduate student of TSU Dorozhkin K.V., post-graduate student of TSU. All materials were reviewed by the editors: Dr. U.L. Mishigdorzhiin from the Institute of Physical Material Science of the Siberian Branch of the RAS, Ulan-Ude, Russia and Prof. S.P. Bardakhanov from the Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia. The conference consisted of plenary presentations for 30 minutes and session reports for 10 minutes. There were 35 oral reports. The organizers have provided 5 minutes for questions that can be asked in person or via the Internet. Topics were: • Synthesis and diagnostics of carbon nanostructures • Hybrid materials • Electrophysical characteristics of carbon nanostructures • Application of THz and GHz radiation for characterization of nanomaterials • Graphene electronics • Magnetic nanomaterials • Theoretical methods and approaches applied to nanoelectromagnetism • Biomedical applications of new materials • Automation of measurements • Modern educational methods The organizers and participants of NNEP-2021 noted the high scientific level of the presented reports.


2012 ◽  
Vol 461 ◽  
pp. 338-342 ◽  
Author(s):  
Da Zhao Deng ◽  
Ji Xiang Luo

Based on the Voronoi cell finite element can also reflect fiber reinforced composites interface to take off the layer and matrix crack propagation of the new cell (X-VCFEM cell)[1]. Combined with the re-mesh strategy and grid dynamic technology, Simulated analysis in different inclusion distribution, interface crack propagation for fiber reinforced composites, the results show that for the model with multiple Voronoi cell, The horizontal tension was the largest; For only a Voronoi cell, The size of the horizontal tension was little change.The result was very important reference value for manufacturing process and engineering application of fiber reinforced composite materials.


2018 ◽  
Vol 185 ◽  
pp. 07008
Author(s):  
Liudmila Makarova ◽  
Yuliya Alekhina ◽  
Elena Kramarenko ◽  
Alexander Omelyanchik ◽  
Valeria Rodionova ◽  
...  

New composite materials consisting of polymer matrix with PZT and NdFeB microparticles were prepared and investigated in the work. It was found that magnetic properties such as saturation magnetization, coercivity, permeability, depend on mass concentration of the ferromagnetic particles in the samples. Also it was found that all samples had electrical polarization in DC external electric field. The electric properties such as coercivity, remanent polarization, the maximum polarization value, had changes in the external constant magnetic field 1.1 kOe. These changes depended on both concentrations of ferromagnetic and ferroelectric particles. This type of magnetoelectric transformation allows us to classify new materials as multiferroic materials. These new composite materials can easily be prepared of any shape, the final materials are flexible and resistant to external chemical influences. The area of application of new multiferroic materials varies from sensors to autonomous energy sources.


1992 ◽  
Vol 27 (1) ◽  
pp. 29-42 ◽  
Author(s):  
W J Cantwell ◽  
J Morton

In this paper the various failure modes which occur in long fibre composites are described and discussed. The significance of each of these fracture mechanisms, in terms of their energy-dissipating capacity as well as their effect on the residual load-bearing properties, is considered. A brief review of both the destructive and non-destructive techniques used for detecting and characterizing defects and damage is presented. The ability of each technique to identify the various fracture mechanisms involved in the failure of long fibre reinforced composites is discussed and their overall suitability for damage detection evaluated.


2020 ◽  
Vol 29 ◽  
pp. 2633366X2093771
Author(s):  
Ferit Ficici

Aluminum matrix composite materials being used in different sectors including automobile, aerospace, defense, and medical and are currently displacing unreinforced materials with their superior mechanical properties. The metal removal process of drilling is widely used in many structural applications. This study experimentally investigates the drilling characteristics of silicon carbide (SiCp)-reinforced Al 7075 composites produced by stir casting method. Also, two different drill materials with high-speed steel (HSS) and titanium nitride (TiN)-coated HSS carry out in drilling operation. The effect of operational parameters such as cutting speed and feed rate and materials parameters such as weight fraction of reinforcement and cutting tools on the surface roughness of drilled holes were evaluated in the drilling operations. The results of the drilling test indicate that the feed rate and cutting speed have a very strong effect on the surface roughness of matrix alloy and composite materials. The surface roughness ( Ra) values increased with increasing the feed rate and decreased with increasing the cutting speed. Under 0.10 mm/rev and 20 m/min drilling conditions and using HSS drill, surface roughness values for matrix, 5% SiC-, 10% SiC-, and 15% SiC-reinforced composites, were obtained 2.57, 2.59, 2.61, and 2.64 µm, respectively; besides, using TiN-coated HSS drill, surface roughness values were obtained 1.60, 1.63, 1.64, and 1.66 µm, respectively. An increase in the weight fraction of the abrasive SiC particle resulted in a very crucial deterioration quality of the drilled hole. TiN-coated HSS drills better performance exhibits than uncoated HSS drills for all the drilling operations about surface roughness properties. Short chip formations observed both the matrix alloy and the composite materials for two different drills in the drilling operations.


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