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Totally, natural materials are generally lower in embodied energy and toxicity than man-made materials.
Journal of Material Science. 32(15):3905-3912
Journal of Composite Materials 2009;43:1791–802
Applied Composite Materials 2000;7:331–9
Journal of Applied Polymer Science 2001;79:1169–77

The effect of magnetic field on the chemical structure of the materials is an important improvement in several decades.
University of Science and Technology of China, (2009)
Mafi, Changiz Dehghanian: submitted to Journal of Applied Surface Science(2011)
[4] Li ChuanJun, Ren ZhongMing: submitted to Journal of Journal of Shanghai University(2011)
[5] ROBERT F T, ERIC B: submitted to Journal of Science and Technology of Advanced Materials( 2009)

Experiment Materials.
ACI Materials Journal, 2004, 101(4): 287-293 [3] C.Y.
ACI Materials Journal, 2004, 101(1): 65-71 [4] S.
ACI Materials Journal, 1999, 96(3): 382-390 [5] Z.F.
Journal of Materials Science and Technology, 2005, 21(1): 113-117

The material behavior of FRP is shown in Table 1.
Based on the mechanical properties of materials and Code for Design of strengthening concrete structure[11],Taking, , .When==0.3(,is respectively the fatigue stress ratio of compressive concrete and tension steel bars), can be calculated by Eq.1 to Eq.4,and the calculated values are shown in Table.3.
Acknowledgements This work was financially supported by Natural Science Foundation of Jiangxi Province (20142BAB216004)and the Youth Science Foundation of Jiangxi Provincial Department of Education(GJJ13712).
Construction and Building Materials,Vol.25(8) (2011),p.3520-3529 [5] Mohsen Shahawy,Thomas E.Beitelman.Static and fatigue performance of RC beams strengthened with CFRP laminates.
Journal of Building Materials 2006;9(3):302-306( in Chinese) [7] Xujun Chen, Huafeng Li,Yongxin Yang.

Bezryadin, Dielectric losses and ac conductivity of Si–LiNbO3 heterostructures grown by the RF magnetron sputtering methodJournal of Materials Science: Materials in Electronics 24 (2013). 1651-1657 [19] Y.
T Salim, Physical Investigations of Niobium Oxide Nanorod Imploring Laser Radiation, Materials Science Forum 1002 (2020) 211-220
Mihailescuc, Pulsed laser deposition of LiNbO3 thin films from Li-rich targets, Journal of Optoelectronics and Advanced Materials 6 (2014) 1345 – 1348
Khalid, Optical investigations of nano lithium niobate deposited by spray pyrolysis technique with injection of Li2CO3 and Nb2O5 as raw materials, International Journal of Nanoelectronics and Materials 11(Special Issue BOND21), (2018) 103-108 [53] N.
Advanced Materials Letters, 7(5) (2016) 410-413

There are three different backplate materials, marble-block, mild steel and aluminum which represent low, medium and high diffusivity respectively.
Zhang a, W.Y.Li a,n, Y.Feng b, J.L.Li a, Y.J.Chao, Improving mechanical properties of friction stir welded AA2024-T3 joints by using a composite backplate, Materials Science &EngineeringA598(2014)312–318 [4] P.
Upadhyay n, A.P.Reynolds, Effects of forge axis force and backing plate thermal diffusivity on FSW of AA6056, Materials Science & Engineering A 558 (2012) 394–402 [5] H.
Balasubramanian, Influences of tool pin profile and welding speed on the formation of friction stir processing zone in AA2219 aluminium alloy, journal of materials processing technology 2 0 0 ( 2 0 0 8 ) 163–175 [9] Hua-Bin Chen, Keng Yan, Tao Lin, Shan-Ben Chen, Cheng-Yu Jiang, Yong Zhao, The investigation of typical welding defects for 5456 aluminum alloy friction stir welds, Materials Science and Engineering A 433 (2006) 64–69 [10] Y.
Ikeda, Hall_/Petch relationship in friction stir welds of equal channel angular-pressed aluminium alloys, Materials Science and Engineering A354 (2003) 298-/305

Materials.
Journal of Materials Science, 1992, 27: 161-174
Journal of Materials Science, 2004, 39:2263-2266
Journal of Applied Polymer Science, 2008, 108: 2211–2217
Journal of Applied Polymer Science, 2008, 109: 1625–1634

Impression Creep in TBC and Advanced Ceramics Materials Františka Dorčákováa, Vít Jan b, Lucia Hegedősovác, Ján Dusza d Institute of Materials Research of the Slovak Academy of Sciences Watsonova 47, 043 53 Košice, Slovakia a fdorcakova@imr.saske.sk, bjan@fme.vutbr.cz, clhegedusova@imr.saske.sk, d jdusza@imr.saske.sk Keywords: Indentation creep, activation energy, TBC topcoat, Y-ZrO2 layer.
Experimental materials and methods Free-standing Y-ZrO2 layer were prepared at the IMR DLR Köln, Germany.
Monolithic SiC was used for the preparation of indenter with the creep resistance much higher than tested materials.
Bartsch, in: Deformation and Fracture in Structural PM Materials, edited by Ľ.
Wolfenstine: Journal of Power Sources Vol. 111 (2002), p. 183

A Study on the Phenomenological Constitutive Model of Mg-12Gd-5Y-3Zn-0.6Zr Magnesium Alloy Forming at Elevated Temperature Guang Lu 1, a, Zhimin Zhang 1,b , Yong Xue1,c , Baocheng Li1,d 1 North University of China, School of Material Science and Engineering, 030051 Taiyuan, China, axzp135464@sina.com, bforgexzp@163.com, cforgezzm@sina.com, d forgexy@sina.com Keywords: Mg-Gd-Y-Zn-Zr magnesium alloy, constitutive model, processing map, dynamic recrystallization, strain softening Abstract.
Magnesium alloy is the lightest mental material available for industrial application now, and has many good mechanical properties, such as high specific strength, excellent performance on vibration damping and electromagnetic shielding, and high specific stiffness, etc.
Experimental materials and methods Mg-12wt%Gd-5wt%Y-3wt%Zn-0.6wt%Zr alloy ingots are adopted as the materials for experiment.
Acknowledgements The present research is supported by the Natural Science Foundation of Shanxi Province, China (Grant No.2013011022-5, 2012011022-2), and Natural Science Foundation of North University of China.
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It is well known that the magnetic properties of Mn-Zn ferrite materials mostly depend on the sintering behavior.
The reason is that the sintering behavior directly affects the microstructure of Mn-Zn ferrite materials, including grain size, homogeneous distribution, sintering density, and so on, which are the key points to make good Mn-Zn ferrite materials [3-6].
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