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Experimental Experimental Materials.
Table 1 The chemical composition of the experimental materials Materials C Si Mn P S Cr Mo Ni V Ti Cu Fe P110 0.31 0.22 0.52 0.0008 0.0007 0.98 0.21 0.16 0.06 0.01 0.17 Bal.
Dental Materials, 23(2007), P.1256-1261
Advanced Materials Research. 557-559 (2012), P.127-130 [7] C T Kwo, S L Fong.
Journal of Materials Processing Technology, 176(2006), P.168-178

The Aluminum Brazing Pieces of Mechanical Performance based on GRNN Neural Network Xinghua Liang1, a, Lin Shi1, b, Yusi Liu1, c, Xiaoming Hua1, d Guangxi Key Laboratory of Automobile Components and Vehicle Technology, Guangxi University of Science and Technology, Liuzhou, China ae-mail:lxh304@yahoo.com.cn,be-mail:574558568@qq.com, ce-mail:liuyusi89@163.com,de-mail:captainhua@gmail.com Keywords: Aluminum brazing pieces, GRNN neural network, Orthogonal experiment, Mechanical performance Abstract.
In this thesis,LF21 aluminum alloy brazing materials were designed and prepared by Orthogonal experiment,and mechanical properties of the brazing specimen was tested.
Based on the GRNN(Generalized Regression Neural Network),Nonlinear relationship modle of brazing material preparation parameters and mechanical properties of the weldment was established.The results show that the model has better stability.When smooth factor value is 0.1,the network approximation error and prediction error absolute value is 0.01%.It can be realized that an nonliner mapping between the aluminum alloy brazing preparation parameters and solder joint tensil strenth based on the Orthogonal test and can do better prediction of the weld mechanical properties,according to brazing material preparation parameters.
,which are widely used in automobiles,high-speed railway vehicle, aerospace and military industries [1,2].Due to its unique physical and chemical properties,the aluminum alloy can get poor solderability and not solder easily.Brazing alloy as an important way to connect with,has the feather of small size brazing deformation and high precision.So in recent years,it has been extensively used by China's automobile industry.Aluminum brazing quality associated with the solder material (flux),the quality of performance of the aluminum brazing flux largely determined by the preparation process[3].Therefore, preparation of aluminum brazing flux is closely related to the solder pieces tensile strength,if we can build the model of the process parameters and weldment tensile strength relational,process parameters can be predicted from the weldment tensile strength,can also be optimized the process parameter maximum tensile strength of the weldment.Because the relationship between process parameters
Chinese Journal of Nonferrous Metals, 2010,20 (9) :38-42 [3] Jinxia, Hulan Wei, Xu Baisheng etc. fluoroaluminate aluminum brazing flux research status and development trend [J].

Introduction Crumb rubber concrete (CRC) is a kind of cement-based composite materials adding various non-uniform continuous rubber powder or rubber particles into plain concrete.
Other physical data of the composition materials is shown in Table 1.
Acknowledgment The authors gratefully acknowledge the financial support provided by the National Natural Science Found (Project No. 10872052, 10802023), the Guangdong Young scholars Science Found (Project No.
Senouci: ASCE Journal of Materials, Vol. 10 (1993), p. 478 [4] G.
Taerwe: Materials and Structures, Vol. 26 (1993), p. 67 [5] Z.M.

They may substitute fatty acids as many oil chemical raw materials, a potential use of methyl esters is as a substitute for diesel, that is biodiesel.
Chemically, biodiesel is a mixture of fatty acid alkyl esters (FAMEs) which are produced from a broad range of oil materials, such as vegetable oils, animal fats and waste oil[3].
Brønsted acidic ionic liquids based on the acid anion catalyzed by acidic Ionic Liquid catalyst for high activity than other acidic Ionic Liquid, bisulfate anion main root, raw materials readily available.
Lehman: Science Vol. 314 (2006), p.1598 [2] M.
Sun: Journal of Hebei Normal University (Natural Science Edition), Vol. 35 (2011), p. 377 [18] L.

Other mathematical models describe the pulling force, which is reported to be affected both by the muscle material and its geometry [21, 22, 23, 24].
To describe the pulling force, we need to consider the muscle geometry and the materials it is made of.
Farana, Drive dynamic analysis - The key to optimal drive performance, Applied Mechanics and Materials, Volume 611, 2014, Pages 208-215 [4] L.
Dindorf, Adaptive control of the electro-hydraulic servo-system with external disturbance; Asian Journal of Control; Vol.15, No.4, pp. 1065–1080, (2013)
Bustin, The Use of Fractional Differentiation or Integration for Signal Improvement, Measurement Science Review, Volume 7, Section 1, No. 5, (2007) [16] Y.

Test Materials and Methods The chemical compositions of 4145H and X new type DC steel were shown in Table 1 and their mechanical properties were shown in Table 2.
E-mail address: zengdezhiswpu@163.com Acknowledgements The research of the paper is supported by the National Natural Science Foundation of China (No.: 51004084) and Young Teacher Science Foundation of Characteristic Key Subject Construction Foundation of China References [1].
Development of Steel for Drill Collar AISI 4145H, Ordance Material Science and Engineering. 1997，20（2）;52～55 [2].
Predict ion of Crack Tip Opening Displacement (CTOD) from the Instrumented Impact Test Based on the Local Approach, Journal of Materials Science & Engineering.2009, 27(6), 946-948 [7].
Rare Metal Materials and Engineering, 2009, 38(3),175-180.

The orthogonal planes technique could be achieved with apparatus easily available in most materials’ science laboratories.
[2] Holm, E.A., and Duxbury, P.M., 2006, "Three-dimensional Materials Science," Scripta Materialia., 54(6), pp. 1035-040
Materials Science and Engineering., A 382, pp. 112–121
L., and Ahzi, S., 2001,"Statistical Continuum Theory for Large Plastic Deformation of Polycrystalline Materials,” Journal of the Mechanics and Physics of Solids., 49, pp. 589-607
Materials Science and Technology, 38(12), 765-779. https://doi.org/10.1080/02670836.2022.206505 [39] Shi Q, Wang C, Deng K, Nie K, Liang W.

Research on Extraction and Refinement of Gutta-Percha from Eucommia Ulmoides Leaves after Comprehensive Utilization Furong Shana, Mengqi Wangb, Yang Baic and Zhiming Yud,* College of Materials Science and Technology, Beijing Forestry University, Beijing, 100083, China amiaofengandxiaok@163.com, bzuiailangwang@sina.com, cbaiyang198812@126.com, dyuzhiming@bjfu.edu.cn *corresponding author, professor.
Introduction Eucommia ulmoides Oliv is a particular kind of economic tree species, rare Chinese medicinal crop, and important lighter materials [1] and gum tree species [2].
Materials and methods Materials and Reagents.
Chen: Journal of Chemical Industry of Forest Products, Vol. 39 (2005) No. 4, p. 16-19
Zhang et al: Journal of Guizhou University of Technology (natural science edition), Vol. 30 (2001) No. 6, p. 11-14.

College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China 2.
Materials and methods Materials.
Journal of Thermal Analysis and Calorimetry, Vol.101, pp.119-127(2010)
[6] Yan Chen, Wenhai Yao, Ruolan Dong: Gypsum building materials.
Journal of Shenyang Jianzhu University (Natural Science), Vol.25, pp. 521-525 (2009).

A High Notch Toughness Agglomerated Flux for Submerged Arc Welding of Pipeline Steel Deliang Ren1,2, Bo Liao 1, Changling Xu2, Lianhai Hu2 , Furen Xiao 1 1 College of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, China 2 Department of Materials Science and Engineering, Shijiazhuang Railway Institute, Shijiazhuang,050043, China E-mail: xwb@sjzri.edu.cn Keywords: Submerged arc welding (SAW), Agglomerated flux, High notch toughness, Uniform design, Flux composition, Pipeline steel Abstract By using the mathematical uniform design, a new agglomerated flux for high speed and multi-arc submerged arc welding (SAW) has been developed in this paper, which performs excellently in welding process, and the effects of flux composition on the welding characteristics is analyzed as well.
Once the welding wires determined (usually according to the parent metal), the fluxes become the key materials that directly influence the weld metal properties (especially ductility and notch toughness at low temperature), welding flaws, welding rate etc.
Welding Journal, 7(1972)p.358s 2.
Yun Peng, Wuzhu Chen, Zuze Xu, Study of High Toughness Ferrite Wire FOR Submerged Arc Welding of Pipeline Steel, Materials Characterization,47(2001)p.67 7.
Journal of Materials Science, 17(1982)p.732