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The Investigation of Material Transfer Characteristics and Surface Morphology of PtIr Contact Materials WANG Saibei1,a, XIE Ming1,b, YANG Youcai1,c, ZHANG Jiming1,d, CHEN Yongtai1,b, LIU Manmen1,e and YANG Yunfeng1,f 1State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Key Laboratory of Yunnan Province Precious Materials, Kunming Institute of Precious Metals, Kunming 650106, Yunnan Province, China a77481311@163.com, bpowder@ipm.com.cn, cyangycai@126.com, dzjm_zane@163.com, eshuiyao82@yahoo.com.cn, f845492961@qq.com Keywords: PtIr contact materials; material transfer; surface morphology; electric erosion Abstract.
In recent years, the requirement of high reliability of contacts which used in control and automobile engineering stimulates research on electrical contact phenomena of the noble metal contact materials.
But the researches mainly focus on silver-based electrical contact materials.
[2] Zhang Kunhua, Guan Weimin, Sun Jialin et al, Preparation and DC arc erosion morphology of AgSnO2 contact materials, Rare Metal Materials and Engineering. 34 (2005) 924-927
[3] Ren Junjie, Wan Wenjiang, Rong Mingzhe , Arc erosion morphology of AgMeO contact materials, Electric Engineering. 5 (1997) 9-12 [4] Guo Fengyi, Wang Guoqiang, Dong Na et al, The arc erosive characteristics and crack formation mechanics analysis of silver-based contact materials, Proceeding of CSEE. 24 (2004) 209-217 [5] Jing Li, Zhi-ying Ma, Research on arc erosion of silver-based alloy contact materials under low voltage resistive load and small current at 400 Hz and 50 Hz, Academic Journal of Xi’an Jiaotong University. 3 (2009) 149-154

Local Universities and Colleges of Undergraduate Course Civil Engineering Specialty In Engineering Geological Practice Problems Probing Take Xuchang University as an Example Gao Jun-zhao1,a ,Zhao Jun-hui 1,b 1 NO.88 of Bayi road·Xuchang·Henan·China  Postcode：461000 a junzhao0915@126.com, b junhuizhaoabc@yahoo.com.cn, Keywords: Engineering geological practice; Civil engineering; Teaching methods; practice.
Engineering geology course is a basic courses in engineering specialty, engineering geology practice is an important link of teaching.
Introduction Engineering geology course is the professional basic course in civil engineering, engineering geological practice is an important practical teaching of engineering geology course, it directly reflects the content of class teaching, enhance students’perceptual knowledge, expand their field of vision , develop and improve the ability of observation, hands-on operational capability and the ability to analyze and solve problems [1].Instead,our country’s civil engineering profession is 1998 in the original geotechnical engineering, structural engineering, municipal engineering, disaster prevention and mitigation works, protection works, bridge and tunnel projects similar merger of eight professional "Large civil", different universities has many differences in civil engineering professional training objectives ,in engineering geology internship position, teaching staff, training bases, etc. there is a big difference too[2].Some local colleges of engineering geological practice
Reformation and Practice on Engineering Geology Practice Teaching.
[J] Science and Technology of Overseas Building Materials. 2005.2 [4] WU Huang-feng , ZHANG Fang-zhi.

The appearance quality requirements of As-cast Finish Concrete has become highway project structure standard; And we successfully developed the multi-function DGT-1 spraying wall composite steel template through the designs of different templates and contrast test research of template surface treatment; Engineering has proved that concrete structure used the template pouring not only can reach the requirements of As-cast Finish Concrete in appearance quality, but also have larger of advantages in turnover number, convenience of using, speeding up engineering progress, environmental protecting, and savings costs. 1 Engineering Background Henan provincial key construction project Ye-Wu highway is an important part of highway system in Henan province.
That is to say, the scale of the cement concrete structure engineering is so large.
The group has proceed an experimental research by varieties of methods such as wall surface template paste PVC board, plastic spraying, brush the paint, the template paste stainless steel plate surface and surface spraying multi-function DGT-1 materials, and it finally put forward a new idea to spray multi-function DGT-1 chemical process of the material in the template wall.
Template steel is the key to ensure construction quality.
Spread on the lesions of the board face evenly with DGT-1 materials after cleaning the damaged position, and then rub down it with paper dips in water after drying. 4 Engineering Effects In the use of the site, multi-function DGT-1 spraying wall composite steel formwork system has proved that: firstly, it can keep template surface from corrosion.

Car’s Materials Acoustic properties test and analysis Yan LIU1,a, Xiaojuan ZHANG 2, Zongcai LIU3 1 Institute of Transportation Engineering , Dalian JiaoTong University, China 2 Department of Mechanical Engineering, Dalian Institute of Science and Technology, China a ly@djut.edu.cn, bdalianxiaojuan@163.com Keywords: car material, noise testing, Acoustic properties.
As the car noise has a big effect on the health of the passengers, as well as on the surroundings, one of the car industry key duties is the car noise reduction.
The adopted of the acoustic damping materials is efficient method on reduction noise.
Motor vehicle material testing and result analysis 3.1 materials’ name and the used position The equipment used in the test is impedance tube, the main tested materials and the used positions are shown in table 1.
[3]E Zwicker and H.Fast.l Psychoacoustics Facts and Models [J].Springer, (1999) [4] Hong Zonghui, The Engineering of Environmental Noise Control.

Those can include the demand for certain materials or the definition of features for handling purposes during assembly.
J.: Concurrent engineering.
M.: A Survey of Concurrent Engineering.
In: Concurrent Engineering 9 (2), 2001, pp. 166–173
[18] Pohl, K.: Requirements engineering.

Value of Humanity in Mechanical Engineering Education A Foundation of Mechanical Engineering Education.
A Facilitator of Mechanical Engineering Education.
A Destination of Mechanical Engineering Education.
Yet in the practical fulfillment, humanity might be unconsciously uncared or “disvalued” in certain engineering fields, especially in today’s world immersed with abundant material attractions.
From speculating about the philosophical saying that “the stones from other hills may serve to polish jades”, we have strong beliefs in the necessity of acquiring the knowledge of other disciplines, or the related courses such as Materials and Applications, Information Sciences and Service Sciences, Superconducting Technology and Applications, Green Manufacturing Technology, Automation and Control Technology, etc., which may prepare new ways for our thinking and serve new perspectives for our studies.

Introduction Some majors relevant to mechanical engineering are always popular.
In 2001, Japanese education proposed the 21-centry university reform engineering, the key is: (1) how to educate the rich humanity—all-dimensional quality education; (2) how to educate the innovation talents—innovation education; (3) how to build a new era school—modern university system.
For instance, we have had two provincial excellent courses “Machine Design” and “Test Technology”, one school excellent course “Engineering Materials” and we will refine some other courses, such as “Mechanical Manufacturing”, “Mechanical Graphing”, “Mechanical CAD/CAM”, “Numerical Control Processing” and “Modern Mechanical Design Method”, into excellent courses.
From those practical materials, student further refined some students’ research projects.
Nelson: Incorporating Rapind Prototyping Machine in Teaching Mechanical Engineering Design, ASME International Mechanical Engineering Congress and Exposition, IMECE 2007, November

Kinematics and Dynamics Simulation of Key Components of Wind Turbine Zixu Liu1, a, Guanghui Zhang1, b, Bo Wang1, b, Xuewei Zhang1, b, Tianbiao Yu1, b and Wanshan Wang1,c 1School of Mechanical Engineering and Automation, Northeastern University, Shenyang, PRC atbyu@mail.neu.edu.cn, btianjiangruixue2008@yahoo.cn, cneuwws@gmail.com Keywords: Wind Turbine; Blade Element Momentum Theory; Rigid-flexible; Kinematics and Dynamics Analysis Abstract: In the article, blade element momentum theory is used for calculated aerodynamic load of blade under the different wind velocities. 3D model of key functional components such as blade, tower, hub and nacelle are modeled in Solidworks, the MNF files of blade and tower are gained in finite element analysis software after flexible processed, and the rigid-flexible multi-body dynamic model of the wind turbine’s key components is created in ADAMS.
Fig.3 The normal and tangential components Fig.4 The size and trend of the aerodynamic load of aerodynamic force of the blade element Building simulation models of the wind turbine’s key components Three-dimensional modeling of the wind turbine’s key components.
The wind turbine comprises of the blade, tower, hub, nacelle and some other key components.
According to requirement, we simplify other structures of the wind turbine, build models of the whole machine’s key components, assemble the key components in SolidWorks and lay a foundation for the following simulation.
The multi-body dynamic model of the wind turbine's key components can be built by adding material properties and constraints.

Deep-Hole Precision Honing of Difficult-to-Cut Materials Xusong Xu1, a, Zhiying Sun2,b , Zhanfeng Liu3,c , Hai Peng3,d 1College of Mechanical Engineering, Jiangsu Teachers University of Technology, Changzhou, 213001, China 2 Surface Technology Research Institute, Shengli Engineering & Consulting Co., Ltd, Dongying, 257026, China 3 College of Mechanical Engineering, Xi’an Shiyou University, Xi’an, 710065, China axuxusong@163.com, bszyxxs@126.com, cliuzf57@126.com, dpenghai@126.com Keywords: Honing precision, Abrasive machining, Titanium alloy, Stainless steel Abstract.
With the adoption of new material and new technique, strong honing is becoming a high efficiency and precision machining process for difficult-to-cut materials.
Key technologies Honing Machine.
Zhu: Journal of Key Engineering Materials Vol. 202~203 (2001), p.403-406
Peng: Journal of Modern Manufacturing Engineering Vol. 10 (2002), p.59-60 (In Chinese).

Research on Multi-level Context-Aware Material Data Model within Manufacturing Enterprises Dongjuan Xue, Ying Pan School of Mechanical and Power Engineering, Dalian Ocean University, Liaoning, China xuedongjuan@163.com, panying@dlou.edu.cn Keywords: Materials data model, Context-aware, Multi-level context-aware Abstract.
And materials data integration and control are one of core competences concerning with the development of mass data application in manufacturing enterprises.
In this paper, a context-aware materials data integration meta model is presented which is incorporating an advanced materials demand mapping and decomposition mechanism to support fine-grained materials data in the right time for the provision of materials services, based on the analysis of the application context involving the key points and relationships in their manufacturing processes.
And at the same time material supplies are the basis and prerequisite guarantee for workshops carry out their productions, so the monitored key activities should be carried out emphasizely among workshops.
Actually, this is the mechanism for obtaining first-order context information from raw materials data.