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The Acoustic Emission Diagnose and Analysis of Journal Bearing‘s Inner Ring Looseness Fault by Truck Wheel Cai,Haichao1,a; Wang,Dongfeng2,b;Xu,Qiaoyu1,c;Shang,Zhendong1,d 1 School of Electromechanical Engineering,Henan University of Science and Technology,Luoyang,Henan,471003,china 2 Science and Technology Department , Bearing Institute of LuoYang , LuoYang, HeNan ,471003,china achclovely99@163.com,bwangdongfeng2006@163.com,cxiaoyu0622@163.com dcnlyszd@163.com Keywords: Rolling bearing; Fault diagnose; Looseness; Wavelet packet analysis Abstract: In this paper, we combine the characteristics of acoustic emission detection with the present condition of truck rolling bearing’s fault detection ,adopting the acoustic emission technique to examine railway freight car ’s journal bearing inner ring looseness .We put forward the method which wavelet packet analyze and withdraw bearing acoustic emission signal’s feature vector.
Acoustic emission technique is a dynamic detection method, which can get materials’ important information,fatigue crack propagation,under the dynamic loading conditions.
The bearing inner ring’s looseness is not bearings’ internal defects, but has the relation to the metal wearing between bearing inner ring and bearing journal[1]. in this paper, we adopt the acoustic emission technology to make a preliminary research and analysis of the bearing inner ring’s loose defect.
In the process of wearing, through the materials ’structure and phase change, the acoustic emission cooperates with superficial impact’s micro-process, rub belt’s damage, the expanding micro-cracks and wear debris’s transfer in the superficial layer.
Acknowledgements This work was financially supported by Henan Province Science and Technology Agency as Key project（0223025200） References [1] Gerald B.

Application of artificial neural network to forecast the tensile fatigue life of carbon material Xiaoling Liaoa , Wenfeng Xub , Zhiqiang Gaoc Chemistry and Environment Science Department, Chongqing University of Arts and Sciences, Chongqing 402160, China a zxc_228@163.com; b xwf_228@163.com; cgzq@cqwu.net Keywords: Artificial neural network, carbon materials, tensile fatigue life, forecast Abstract: Artificial neural network (ANN) is widely applied to the modeling of complex systems, which has become a common modeling method in the study of materials science.
As the ideal candidates for high temperature structural materials, carbon materials are no doubt involved in fatigue loads, so the study on forecasting fatigue life is meaningful.
As preferred high-temperature structural materials, the potential applications for carbon materials are bound to involve fatigue loading.
At the same time, artificial neural network (ANN) is widely applied to the modeling of complex systems, and now it has become a common modeling method in the study of materials science, but the reports using ANN to forecast the fatigue life of material are few.
Journal of Materials Processing Technology, 2002,(122):196-200 Cycle/n Applied stress/MPa �R/Ro/% Fig.4 The network trainrecord of forecast Import Adjusting error Connect error of every nerve cell Target value Export Fig.3 The study sketch of ANN Compare

From the perspective of building materials and technology, this paper carries out literature research and fieldwork in order to comb and summarize the main construction of monastery buildings and common building materials.
The above thermal environment effect can be obtained only through materials and construction.
Journal of Qinghai normal university(philosophy and social sciences), 39(2017)83-86
Journal of Xi’an University of Architecture & Technology(Natural Science Edition). 50(2018) 78-84 [7] Meji Zhuo.
Journal of Tibet national institute (philosophy and social science). 31(2010)30-38

Design of Exotic Materials Machining System John P.T.
StJohn, The influence of process parameters during machining of Ti6Al4V alloy, Materials Science Forum. 561-565 (2007) 159-162
Tsai, Micro-hole machining of carbide by electric discharge machining, Journal of Materials Processing Technology. 87(1–3) (1999) 139–145
Pandey, Some investigations into the electric discharge machining of hardened tool steel using different electrode materials, Journal of Materials Processing Technology. 149(1–3) (2004) 272–277
Hu, Electrical Discharge Grinding of Polycrystalline Diamond, Materials Science Forum. 471-472 (2004) 457-461

[11].Ma S K,Yang J,Wu B B.Effects of MPP on the Sound Absorptive Property of Porous Materials[J].Journal of Qingdao University(Natural Science Edition). 2016,29(3):79-82,88
Journal of Mechanical Engineering. 2016,52(13):68-78
Chinese Journal of Raremetals. 2015,39(1):49-54
Acoustic manual[M].Beijing Science Press,2004
Noise control[M].Beijing Science Press,1987.

Permeability of Packaging Materials Sheng Zhang1, Wenchao Gu2, Zhengyong Cheng1, Wenjuan Gu1, a*, Ying Li1, 1Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Chenggong, Kunming City, China 2School of Tourism and Geographical Science, Yunnan Normal University, Kunming City, China a*guwenjuan@whu.edu.cn Keywords: packaging material, permeability, barrier, food packaging Abstract.
Several commonly used packaging materials were researched in this paper.
Permeability of Packaging Materials The Gas Permeability.
The moisture-resistance property depends on the packaging materials.
[3] Oi-Wah Lau, Siu-Kay Wong, Contamination in food from packaging material, Journal of Chromatography A, 882 (2000) 255–270

Teaching of Materials and Welding Engineering to Today's Postgraduate Mechanical Engineers A.
Valiulis Department of Materials Science and Welding, Vilnius Gediminas Technical University, Basanaviciaus 28, LT-03227 Vilnius, Lithuania Algirdas.valiulis@adm.vtu.lt Keywords: materials engineering, welding engineering, modeling of physical processes.
A particular example is the combining in one study program, studies of different engineering and structural materials (including composite materials, ceramics, polymers, etc.) and methods and technologies of brazing, joining by welding, bonding by glue, etc of these materials.
Valiulis: Materials Science, Vol. 6, No 3, Kaunas, Technologija (2000), p. 163 [5] L.
Višniakov: Materials Science, Vol. 9, No 2, Kaunas, Technologija (2003), p. 164

Especially, it has put in a lot of efforts in R&D of new materials, changes in functions, and innovations in design, stepping into the service industry from the manufacturing industry.
Items of the same shapes and colors but different materials and costs may lead to different feelings.
Therefore, external elements such as forms, colors, materials, finishing, and interfaces of products become important elements for innovative design and development.
N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 N11 N12 N13 N14 N15 N16 N17 Figure 1 Drawings of extended creative product designs with hosiery materials Conclusions In this study, the drawings of creative ideas were created according to the manufacturer’s demands regarding extended innovative product design with hosiery materials.
Jiang, Innovative Product Design: Beginning with Understanding Colors, Materials, and Finished Works, DrMaster Press Co., Ltd., Taipei (2011)

Shockwave Response of Polymer and Polymer Nanocomposites Jean Njoroge1,b, Arnab Chakrabarty2,c and Tahir Cagin1,2,a 1Department of Materials Science and Engineering, Texas A&M University, College Station, Texas, 77843-3003, USA 2Department of Chemical Engineering, Texas A&M University, College Station, Texas, 77843-3022, USA atcagin@tamu.edu, bjnjoroge@tamus.edu, carnabc@gmail.com, cbedri.arman@chemail.tamu.edu Keywords: computational materials science, nanocomposites, dynamic response, shock waves, graphene, polyurathene Abstract.
[3] Meyers, M.A., Dynamic Behavior of Materials. 1994, New York: John Wiley
[6] Kasparek, E., et al., Computational Materials Science, 2011. 50(4): p. 1353-1358
[15] Veca, L.M., et al., Advanced Materials, 2009. 21(20): p. 2088-2092
[17] Grujicic, M., et al., Materials Science and Engineering: A, 2011. 528(10-11): p. 3799-3808

Materials Science Forum Vols. *** (2004) pp.401-404 online at http://scientific.net  2004 Trans Tech Publications, Switzerland Research Status Quo of Simulation Design Methods for Ceramic Tool Materials L.Q.
With the development of material and computer science, the higher requirement of the industry on ceramic materials, the computer aided design of ceramic materials is highly imperative.
Currently, Advances in Materials Manufacturing Science and Technology 402 they are mainly used in the areas such as pattern recognition and classification, function approximation, data compressing and predicting etc.
Mukherjee: Computational Material Science Vol. 5 (1996), p. 307 [2] N.
He: Materials for Mechanical Engineering Vol. 26 (2002), p. 7 [4] J.Q.