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Locator Layout Optimization for Checking Fixture Design of Thin-walled Parts Xionghui Zhoua, Wei Liub,Qiang Niuc, Peng Wang, Kun Jiang National Die & Mold CAD Engineering Research Center, Shanghai Jiao Tong University, China axhzhou@sjtu.edu.cn, bliu-wei@sjtu.edu.cn, cqniu@sjtu.edu.cn Keywords: thin-walled parts; checking fixture design; locator layout; optimization Abstract.
Introduction In the field of vehicle and aircraft manufacturing industry, there are a large number of complex thin-walled parts containing free-form surfaces, the manufacture size deviation of which directly affects the quality of the final product .The measurement of thin-walled parts is a complicated process, while the checking fixture is the key influence factor of the precision of the thin-walled parts measuring system.
Its material is rolled steel, Modulus of elasticity is 2.06×106 MPa, Poisson's ratio is 0.3, and density is 7.85×103kg/m3.
In the further work, we will act the optimal results on fixture design and give an effectual direction to practical engineering applications.
Chinese Mechanical Engineering, 19 (2008), pp.2376-2381

Isa1, c and S.I.S Hassan1, d 1School of Electrical System Engineering Universiti Malaysia Perlis (UniMAP), 02600 Arau, Perlis, Malaysia achangyii89@gmail.com, bkhairulhafizi89@yahoo.com, cmuzamir@unimap.edu.my, dsyedidris@unimap.edu.my Keywords: Three-point, Double-end, Partial Discharge, XLPE Underground Cables, ATP Abstract.
For use with high voltage equipment, based on some critical parameters of a sensor such as cost, bandwidth, sensitivity, saturation, linearity, operating temperature, footprints, integratability, flexibility, isolation and material technology, RC have been considered as a favourite tool for PD current sensing purposes [1, 2].
The keys of fault location technology are accuracy and reliability, fault location method based on failure analysis is in the development and improvement along the path of improving reliability and accuracy [5].
[2] Shafiq, M.; Kutt, L.; Lehtonen, M.; Nieminen, T.; Hashmi, M., "Parameters Identification and Modeling of High-Frequency Current Transducer for Partial Discharge Measurements,"  Sensors Journal, IEEE , vol.13, no.3, pp.1081,1091, March 2013 [3] Hashmi, G.M.; Lehtonen, M.; Nordman, M., "Modeling and experimental verification of on-line PD detection in MV covered-conductor overhead networks," IEEE Transactions on Dielectrics and Electrical Insulation, vol.17, no.1, pp.167,180, February 2010 [4] Isa, M.; Hashmi, G.M.; Lehtonen, M., "Comparative study of on-line three phase PD monitoring systems for overhead covered conductor distribution lines," Universities Power Engineering Conference (UPEC), 2009 Proceedings of the 44th International , pp.1,5, 1-4 Sept. 2009 [5] Zhen Zhou, Lv Yanping.
[7] Clark, D.; Mackinlay, R.; Giussani, R.; Renforth, L.; Shuttleworth, R., "Partial discharge pulse propagation, localisation and measurements in medium voltage power cables," Power Engineering Conference (UPEC), 2013 48th International Universities' , pp.1,6, 2-5 Sept. 2013 [8] Mohamed, F.P.; Siew, W.H.; Soraghan, J.J.; Strachan, S.M.; McWilliam, J., "Partial discharge location in power cables using a double ended method based on time triggering with GPS,"  IEEE Transactions on Dielectrics and Electrical Insulation, vol.20, no.6, pp.2212,2221, December 2013

New Algorithm for Engine Oil Identification by Infrared Spectrum Shi Yonggang1,a,Wen Hao1,Gong Haifeng2,Li Zicun1,Su Bin3,Sun Ping4 1Department of Training, Logistic Engineering University, Chongqing 401311, PRC 2Chongqing University of Science and Technology, Chongqing 40000, PRC 3 Oil Application Group,Being Oil Institute,Beijing 102301,PRC 4Chongqing Nonferrous Metal Institute, Chongqing 400039, PRC aygshi@126.com Keywords: Engine Oil, Infrared Spectroscopy, Similarity Evaluation Index, Algorithm Abstract.
For discriminating the engine oils, the key problem is to acquire the information of oil’s IR spectra exactly and conceive an effective measure index or parameter of spectrum similarity [10].
Fig.1 The infrared spectra of gasoline engine oils Fig.2 The infrared spectra of diesel oils The similarity measurement is commonly used for checking the consistency of samples with specific reference material.
Lubrication Engineering,2006,(12),77-80,84
Chemical Engineering of Oil& Gas, 2008,37(1),77-80

Numerical Simulation on Fatigue Life Assessment of Free Span for Submarine Pipeline Jie Donga,*, Xuedong Chenb, Bing Wangc, Weihe Guand, Tiecheng Yange, Zhichao Fanf, Jianhua Pang Hefei General Machinery Research Institute (National Engineering Technical Research Center on PVP Safety, Anhui Provincial Laboratory for Safety Technology of Pressure Vessels and Pipelines) Hefei, Anhui, China a,*jiedongjd@163.com, bchenxuedong@hgmri.com,cwangbing@hgmri.com, dguanwh9078@sina.com,eytc828@163.com, ffanzhichao888@sina.com,g13956050670@163.com Keywords: Submarine Pipeline, Free Span, Fatigue, Numerical Simulation Abstract.
(i) 25m (ii) 30m (iii) 35m (iv) 40m Fig. 3 Variation of the stress amplitude for free span with flow velocity Fatigue damage accumulation and fatigue life assessment The fatigue damage is calculated by Miner linear damage accumulation rule: (3) where is fatigue accumulation damage, ni is the experienced cycle for pipeline under stress range Si, Ni is the fatigue life under stress range Si and it can be calculated with the equation below: (4) where ,,,and are the parameters determining the material fatigue property which can be obtained from DNV-RP-C203[9].
Acknowledgements The research is supported by the National Key Technology R&D Program (No. 2012BAK32G00).
Bemtsen, On the response of a free span pipeline subjected to ocean currents, Ocean Engineering. 30 (2003) l553-1577
Bai, Fatigue analysis on multi-spanning pipelines, Journal of Harbin Engineering University. 32 (2011) 560-564

Maintenance quality will directly affect flight safety, and aviation supplies support is a key factor for maintenance quality.
As the civil aviation enterprise normative operation, the "Maintenance and Production - Inventory- aviation supplies Supplement” system can be taken as a general physical system, shown in Fig.2, which provides possibility for aviation supplies inventory control strategies by the engineering control theory. [3] On other hand, aviation supplies inventory system is an uncertain system.
The result shows: (1) From the engineering point of view that the number of different dates tire consuming is independent of each other and the correlation of different date loss is weak
References [1] Chendong Ji, the Research of Air Material Support System on China Southern Airlines Dalian Branch, Dalian University of Technology(2005) [2] Aiyun He, An Introduction of the Air Supply Stock Management of United Airlines, Civil Aviation Economy and Technology, No.227(2011), p.11-14 [3] Shiwei Zhao, Keqiang Hua, Research of MRAC on Intervals between Arriving Flights Controlling, 2010 Chinese Control and Decision Conference(2010), p.4064-4067 [4] Keqiang Hua, Wenfang Qu, Aviation Supplies Inventory Data Analysis and the Study of the Optimal Inventory, Aviation Maintenance & Engineering(2011/4), p.68-70, [5] Yang Yu, Qiuyuan Wang, Problems of Singular Stochastic Control with Stopping Drift and Diffusion, Control Theory and Applications, Vol.27(2010), p.431-436

A Flexible Roll Forming On-line Detection Algorithm Based on Machine Vision Xupeng Li1,a, Bo Qian2,b, Qiang Li3,c 1College of Electromechanical Engineering, North China Univ. of Tech, 100144, Beijing, China 2College of Electromechanical Engineering, North China Univ. of Tech, 100144, Beijing, China 3College of Electromechanical Engineering, North China Univ. of Tech, 100144, Beijing, China alix66@126.com, bqianbo@ncut.edu.cn, cliqiang6576190@yahoo.com.cn Key words: flexible roll forming, detection system, machine vision, image processing.
As for auto parts processing, not weaken the use performance situations, flexible roll product material can be saved about 25% ~ 40%.

The Theory and Practice of Forepoling Pre-stressed system bolt in preventing the rib spalling Liu Haiyuan1, a, Jia Housheng1,b , Fan Long1,c and Han Bin1,d 1China university of Mining and Technology, Beijing, Beijing, 100083, China aliuhaiyuan302@126.com, bjiahousheng@126.com, c1019491589@qq.com, dzaijianhonghu @163.com Key words: Unconsolidated and Fracture, Forepoling Pre-stressed system, rock bolting, Broken Rock Zone Abstract: Based on the particularity of loose and broken of the surrounding rock of roadway, there will be rib spalling after excavating of roadway without support problem.
Through the analysis of above all, to differentiated and partial derivative calculate on the strain energy, it can be clearly concluded that when forepoling bolt form forepoling pre-stressed wall, the greater the force w of prestressed on the bolt, the better effect of pre-stressed will be ，means the initial installation of prestressing archorage force directly influence the effection of pre-stressed wall system; Second in the process of differential analysis, it may draw that the Angle, cross-sectional area, and material (modulus of elasticity)of the bolt has a direct relationship, making mutual influence on the role of the forepoling pre-stressed wall system.
The application of forepoling pre-stressed system bolt support Site construction methods profile.For the spalling problem before and after the coal wall support in tunneling engineering, the tunneling team implement forepoling suppor every 2m.
With engineering rock forepoling bolt construction method of crushing [J].
Coal Engineering，2009（7）

Research on Strip Steel Surface Bright-Field and Dark-Field Images Fusion Method Yulan Wei1, a, Bing Li1, b, Yunhui Yan2, c and Shouxin Zhu1, d 1 School of Information and Engineering, Huzhou Teachers College, Huzhou, 313000, P.R.
China 2 School of Mechanical Engineering and Automation, Northeastern University, Shenyang, 110819, P.R.
Introduction Strip steel is indispensable raw material in the automotive, electrical, chemical, shipbuilding and many other industries.
Such detailed information is the key to identify the defects.
J. of Biomedical Engineering and Technology.

Subharmonic Resonance Analysis of a 2-DOF Controllable Linkage Mechanism System Affected by Self-excited Inertial Force Rugui WANG*a, Yuan CHEN b, Ganwei CAIc College of Mechanical Engineering, Guangxi University, Nanning 530004, China a rugui@163.com, bcosro@sina.com, ccganwei@gxu.edu.cn Keywords: Controllable linkage mechanism, Self-excited inertial force, Subharmonic resonance Abstract.
The material of link is aluminium.
Acknowledgments This research is supported by the Project Sponsored by the Scientific Research Foundation of GuangXi University(Grant No.X081018) and Project Sponsored by the Guangxi Key Laboratory of Manufacturing System & Advanced Manufacturing Technology(0842006_040_Z).
[3] Zhang Hai,Cao Shujuan.Dynamics Analysis on Whole Joints of Bucket Manipulator with Closed Loops.journal of wuhan university of technology(transportation science & engineering), Vol. 31(1) (2007),p. 161-164
Dynamic Optimum Design of Controllable Linkage Mechanism under Given Trajectory.China Mechanical Engineering, Vol.19(22) (2008),pp. 2653- 2656.

The Prediction and Control Research on the Attenuation Law of Blasting Vibration Peak Velocity in Daiyuling Tunnel Honglu Fei1, a, Xingzhu Zhang1,b , Zhiguang Yang1 1 Civil Engineering and Transportation Institute of Liaoning Engineering Technology University, Fuxin Liaoning ,China a email:feihonglu@163.com b email: 306344106@qq.com Keywords: neighborhood tunnel; blasting vibration; field monitoring; regression analysis; attenuation coefficient Abstract: In combination with field blasting vibration tests in Daiyuling 2# Tunnel, abundant field monitoring datum have been obtained, in order to predict the strength of blasting vibration and research the control problem about stability of surrounding rock.
That take effective measures to ensure the rock column, surrounding rock stability, clip in the hole before the initial support is not destroyed in the blasting process, is the key to ensure the smooth construction of the tunnel construction, but also the difficulties in.
Part I: Equivalent Material Property Approach[J].
Rock mechanics and Rock Engineering. 2002.35(2):79～94