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Free Vibration Analysis of Anisotropic Composite Materials of a Fixed-Wing Nahla Alhazmi* Center of Excellence for Aeronautics & Astronautics, National Center for Composite and High-Performance Materials Materials Science Research Institute, King Abdulaziz City for Science and Technology, Riyadh, 11442, Saudi Arabia *Correspondence: nalhazmi@kacst.edu.sa Keywords: Vibration; Natural frequencies; Composite; Dynamic behavior; Deformation.
Nowadays, the availability of composite materials and their acceptable manufacturing cost, in addition to their high strength-to-weight ratio, has shifted the use of the materials from metal alloys to composite materials in the aircraft industry.
Wing Materials and Properties Three different composite materials with anisotropic properties have been used as the wing materials for comparison with the metal alloys aluminum alloy AL2024 and 7075-T6.
Materials , 13, 2213. 2020
Öncü, Properties of FRP materials for strengthening, Int.

Recycling is, thus, the last step on a materials loop, in the perspective of CE.
From a different perspective, composite materials may provide a significant way to decrease material waste.
Local materials and waste management The decentralization of production could lead to the decentralization of materials supply chains.
In: JOURNAL OF PROGRESS IN MATERIALS SCIENCE 72 (2015), pp. 100-140.
In: International Journal of Material Forming (June 2017). issn: 1960-6214. doi: 10.1007/ s12289- 017-1364-5

The Synthesis and the thermal Properties of CaZr4(PO4)6 materials SU Long1, a,SUI Wanmei2,b ,LIU Yujie3,c 1,2,3College of Physics Science, Institute of Inorganic Materials Engineering,Qingdao University, 308,Ningxia Rd., Qingdao,266071,China asulong1314happy@163.com, bcorresponding author,wlxswm@qdu.edu.cn, clunaryoga@163.com Keywords: Ceramics; Solid phase method; CaZr4(PO4)6; Thermal expansion coefficients Abstract.CaZr4(PO4)6 ceramics were prepared with solid reaction of two-steps method.
In the current researches, CaZr4(PO4)6 materials has been synthesized by sol-gel method, although the process greatly improves the sintering behavior of the material[3], the material prepared with this process was relatively expensive due to the precursor materials and complex processing required.
Results and discussion Morphology and phase structure of the materials.
Limaye,D K.Agrawal,R Roy, et al.Synthesis, sintering and thermal expansion of Ca1-xSrxZr4P6O24—an ultra-low thermal expansion ceramic system [J].Journal of Materials Science,1991,26:93-98 [4] V.Srikanth,X.Subbarao,D.Agrawal,et al.Thermal expansion anisotropy and acoustic emission of NaZr2(PO4)3 family ceramics[J].Am.Ceram.Soc,1991,74(2):365-368 [5] L.Bois,M.J,Guittet,F.Carrot,et a1.Preliminary results on the leaching process of phosphate ceramics potential hosts for actinide immobilization[J].Journal of Nuclear Materials.2001,297: 129-137 [6] C.S.Yoon,C.K.Kim,T.Y.Byun.Synthesis and thermal expansion behavior of liquid phase sintered CaZr4(PO4)6–Li2O[J].Materials Chemistry and Physics, 2002,77:930–937 [7] N.Chakraborty, D.
Journal of the European Ceramic Society,2005,25:1885–1893 [8] S.Y.Limaye,D.K.Agrawal,R.Roy,et al.Synthesis,sintering and thermal expansion of Ca1-xSrxZr4P6O24—an ultra-low thermal expansion ceramic system[J].Journal of Materials Science,1991,26:93-98

Experiment Materials.
Chinese Journal of metallurgy, 3 (2004),61-65
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Journal of Building Materials.2002,5(1):84-89
Advanced Materials Research,Vol.158, (2011),189-196

Research on the Compatibility of Cement-based Biomass Materials Modified by Early-strength Agents Hong Qi1*, a, Wei Qi2,band Guo Dong Sheng3,c 1.School of Science, Shenyang Jianzhu University, Shenyang 110168, China; 2.
Material Science and Engineering College, Shenyang Jianzhu University, Shenyang 110168, China; 3.
Wood materials，1964，18(12)：53-59
Forest Products Journal, 1964, 14(12): 567-570
Materials and Design, 2010(31): 4676-4685

Coal spontaneous combustion mechanism and Research of New Flame Retardant Material Wenhua Pang1, a, Ruxiang Qin2,b 1College of Energy and Security, Anhui University of Science & Technology, Huainan, 232001, China 2College of Energy and Security, Anhui University of Science & Technology,Huainan , 232001, China aemail: wenwen91804@sina.cn, bemail: 309374919@qq.com Keywords: Coal Spontaneous Combustion; Free Radical Reaction Mechanism; New Flame Retardant Materials; The Inhibitor Agent Abstract.
By analyzing the mechanism of coal spontaneous combustion, this paper summarizes the deficiency of existing flame retardant materials, to expound their thoughts on new flame retardant materials research trent.
Therefore, the material selection extended to the field of fire protection materials, in order to find the best fire-retardant materials, to achieve the best resistance of the results, will be a new trend.
Journal of Coal, 1998, 23(6) 620
Journal of ChinaUniversity of Mining, 1996, 25(3) 112-113

Biomimetic materials are a new class of materials that copy the structure and architecture of wildlife.
The copying of the structure of a butterfly's wing, gecko legs, human bones - all this allowed to create the new materials that have already found their application.
Modern biomimetics is largely associated with the development of new materials that copy natural ones.
Modern biomimetics is largely associated with the development of new materials that copy natural ones.
The same Kevlar appeared as a result of joint work of biologists-geneticists and engineers, experts in materials.

Progress in the studies of multifunctional triphenylamine materials Hongyun Chena＊ and Congbin Fanb School of Chemistry & Chemical Engineering, Jiangxi Science & Technology Normal University, Nanchang 330013; China aEmail:136169501@qq.com Keywords: triphenylamine, photoelectric conversion, electrochromism, optical limiting, chemical sensing Abstract.
Triphenylamine for solar cell materials.
Electroluminescent properties Triphenylamine derivatives as blue luminescent materials, is a kind of organic electric have potential applications in luminescence materials.
Because the triphenylamine and transition metal complexes with luminescent characteristics of good, some scholars will be three aniline metal complexes used as electroluminescent materials.
Therefore, three aniline derivatives as electroluminescent materials have potential applications .

Here we discuss the main features of these materials.
These materials heat up when a magnetic field is applied.
Also the magnetocaloric performance of these materials is significantly better than the rare-earth based classical materials.
Bruck, Advanced Energy Materials 1 (2011) p. 1215
Brück, Advanced Materials 26 (2014) p. 2671

In order to obtain the braided composite materials with better combination performance, it is urgent to research and develop more 3D braided processes.
The viable processing equipment has developed for one of novel 3D braided materials by our group, as shown in Fig.7.
Geometry model of new 3D braided materials Novel 3D braided geometry structure is expected for the production of new 3D braided composites preform.
[2] Ma Wensuo, Feng Wei: Journal of University of Science and Technology Beijing, Vol. 29(2) (2007), p. 226-231+246
[3] Ma Wensuo, Zhu Jian-xun, Jiang Yun: Journal of Materials Science and Engineering, Vol. 28(5) (2010), p