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Online since: January 2012
Authors: Bo Qian, Qiang Li, Xu Peng Li
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%.
As for auto parts processing, not weaken the use performance situations, flexible roll product material can be saved about 25% ~ 40%.
Online since: August 2013
Authors: Bin Han, Hou Sheng Jia, Hai Yuan Liu, Long Fan
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)
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)
Online since: July 2011
Authors: Shou Xin Zhu, Bing Li, Yu Lan Wei, Yun Hui Yan
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.
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.
Online since: October 2010
Authors: Gan Wei Cai, Yuan Chen, Ru Gui Wang
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 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.
Online since: November 2013
Authors: Hong Lu Fei, Xing Zhu Zhang, Zhi Guang Yang
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
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
Online since: July 2014
Authors: Min Zhang
The Unusual Development Suggestion On Modern College Library
Min Zhang
School of Architecture and Civil Engineering, Inner Mongolia University of Science and Technology,
No.7 Aerding Street, Baotou, Inner Mongolia, 014010, China
zm8124@126.com
Keywords: Modern, College library, Xi’an, Development suggestion, Protection
Abstract.
So, I took Xi'an as an example, the investigation result[1,2] showed that there ever built 35 colleges, and in it, there still remained 5 college libraries, they are: the library of Northwestern University, the library of Shaanxi Normal University, the library of Xi'an Jiaotong University, the library of Northwestern Polytechnical University, and the library of Xi'an construction engineering school (today for Chang’an University Xiaozhai Campus).
The so-called "traditional pattern", that the building were inspired by the Soviet union building, treat ancient Chinese official architecture as the basic models, broke through departed plane layout, adopted the approach of developing towards high altitude, explored the creation mode of the folk format under the condition of new technology and material.
For example as follows: the library of Northwestern University, the library of Shaanxi Normal University (as shown in Figure 6), and the library of Xi'an construction engineering school.
History background was the very important key factor which formed architectural styles and characteristics, while the buildings were in turn as bear witness which carried the memory of history.
So, I took Xi'an as an example, the investigation result[1,2] showed that there ever built 35 colleges, and in it, there still remained 5 college libraries, they are: the library of Northwestern University, the library of Shaanxi Normal University, the library of Xi'an Jiaotong University, the library of Northwestern Polytechnical University, and the library of Xi'an construction engineering school (today for Chang’an University Xiaozhai Campus).
The so-called "traditional pattern", that the building were inspired by the Soviet union building, treat ancient Chinese official architecture as the basic models, broke through departed plane layout, adopted the approach of developing towards high altitude, explored the creation mode of the folk format under the condition of new technology and material.
For example as follows: the library of Northwestern University, the library of Shaanxi Normal University (as shown in Figure 6), and the library of Xi'an construction engineering school.
History background was the very important key factor which formed architectural styles and characteristics, while the buildings were in turn as bear witness which carried the memory of history.
Online since: August 2013
Authors: Gui Li Gao, De Quan Shi
Review on Artificial Neural Network and Its Application in Foundry
Dequan Shi, Guili Gao
College of Material Science and Engineering Harbin University of Science & Technology, Harbin, P.
The results showed the system reduced the consumption of raw materials and energy, decreased the rejected production and improved the casting quality.
Acknowledgment This work was supported by the Foundation for University Key Teacher of Heilongjiang Province of China (1252G025).
Shi, “An optimizing direct-control technology of green sand quality based on the method of fast testing ingredients,” China Mechanical Engineering, vol. 18, pp. 2700-2704, November 2007
Liang, “Research on modeling and controlling of cupola melting process based on neural network,” Computer Engineering and Applications, vol. 45, pp. 245-248, September 2009
The results showed the system reduced the consumption of raw materials and energy, decreased the rejected production and improved the casting quality.
Acknowledgment This work was supported by the Foundation for University Key Teacher of Heilongjiang Province of China (1252G025).
Shi, “An optimizing direct-control technology of green sand quality based on the method of fast testing ingredients,” China Mechanical Engineering, vol. 18, pp. 2700-2704, November 2007
Liang, “Research on modeling and controlling of cupola melting process based on neural network,” Computer Engineering and Applications, vol. 45, pp. 245-248, September 2009
Online since: November 2012
Authors: Takekazu Sawa, Naohiro Nishikawa, Yoshinori Sato, Fumika Andou, Yoshihiro Hagihara, Hiromasa Kato, Nobuhito Yoshihara, Hiroaki Okawai, Takatoshi Murase, Toshiro Iyama, Masahiro Mizuno, Shinya Tsukamoto
Development of Electric Rust Preventive Machining Method
- Optimization of Water Recycle System -
N Nishikawa1, a, Y Sato1, F Andou1, T Sawa2, Y Hagihara1, H Kato1, N Yoshihara1, H Okawai1, T Murase1, T Iyama1, M Mizuno1 and S Tsukamoto3
1Faculty of engineering, iwate university, 4-3-5 ueda, morioka, iwate, 020-8551, Japan
2Department of Mechanical Engineering, Tokyo Denki University, 5 Senju-asahicho, Adachi-ku, Tokyo, 120-0026, Japan
3Faculty of engineering, okayama university, 3-1-1 tsushima-naka, okayama, okayama, 700-8530, Japan
ankawa@iwate-u.ac.jp
Keywords: electric rust preventive machining method, environmental harmonic machining, grinding, cutting, machining, machining fluid, effluent treatment, water machining, sludge, iron, rust, water, recycle, reverse osmosis membrane, purification, water quality, flow quantity, optimization
Abstract.
Iron material surface ionized and leaked Fe2+ ion in water as chemical formula (1), and rust is generated.
Moreover, machine body rust is prevented with this principle and, coating, material changing (steel to resin or stainless) [7].
Yamanaka, Cutting fluid and Grinding fluid, Saiwaishobo Co.Ltd., Japan, 1982, pp.244-264 [3] TECHNICAL RESEARCH INSTITUTE Japan Society for the Promotion of Machine Industry, Material Processing Data File Text Vol:15 (Grinding), TECHNICAL RESEARCH INSTITUTE Japan Society for the Promotion of Machine Industry, Japan, 2002, pp.32-33 [4] N.
VI Key Eng.
Iron material surface ionized and leaked Fe2+ ion in water as chemical formula (1), and rust is generated.
Moreover, machine body rust is prevented with this principle and, coating, material changing (steel to resin or stainless) [7].
Yamanaka, Cutting fluid and Grinding fluid, Saiwaishobo Co.Ltd., Japan, 1982, pp.244-264 [3] TECHNICAL RESEARCH INSTITUTE Japan Society for the Promotion of Machine Industry, Material Processing Data File Text Vol:15 (Grinding), TECHNICAL RESEARCH INSTITUTE Japan Society for the Promotion of Machine Industry, Japan, 2002, pp.32-33 [4] N.
VI Key Eng.
Online since: August 2011
Authors: Janice M. Dulieu-Barton, S.W. Boyd, G. Crammond
Speckle pattern characterisation for high resolution digital image correlation
G Crammond1, a, S W Boyd1 and J.M Dulieu-Barton1
1University of Southampton, School of Engineering Sciences, Southampton, SO17 1BJ, UK
agc305@soton.ac.uk
Keywords: Speckle pattern, Digital Image Correlation
Abstract Digital image correlation (DIC) is an optical technique for full field deformation measurement.
The speckle pattern has been identified as a key factor in the measurement accuracy of DIC.
Shang: Applied Mechanics and Materials Vol.13-14 (2008), p. 65 [3] J.
Belhabib; Optics and Lasers in Engineering Vol.46 (2008), p. 185 [7] Y.
Habraken: Optics and Lasers in Engineering, Vol.44 (2006), p. 1132 [9] M.
The speckle pattern has been identified as a key factor in the measurement accuracy of DIC.
Shang: Applied Mechanics and Materials Vol.13-14 (2008), p. 65 [3] J.
Belhabib; Optics and Lasers in Engineering Vol.46 (2008), p. 185 [7] Y.
Habraken: Optics and Lasers in Engineering, Vol.44 (2006), p. 1132 [9] M.
Online since: June 2009
Authors: Fu Lei Chu, Ru Jiang Hao, Zhi Peng Feng
Defects Diagnosis of Bearing by Means of Acoustic Emission and
Continuous Wavelet Transform
Rujiang Hao1,a, Zhipeng Feng2,b
, Fulei Chu3,c
1
Department of Mechanical Engineering, Shijiazhuang Railway Institute, Shijiazhuang 050043,
China
2
Institute of Vehicular Engineering, University of Science and Technology Beijing, Beijing, 100083,
China
3
Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084,
China
a
h_rujiang@126.com, bzhipeng.feng@yahoo.com, cchufl@mail.tsinghua.edu.cn
Keywords: acoustic emission, continuous wavelet transform, signal purification, defect diagnosis
Abstract.
Particles inside martial (atoms, molecules and particle swarm) will generate elastic waves from the transient release of strain energy as a result of the relative motion inside the materials.
AE is defined as transient elastic waves generated from a rapid release of strain energy caused by a deformation or damage within or on the surface of a material [1].
Let x (t) be a squared integrable function, i.e. x(t)∈L2(R), the CWT of this function is defined as the integral transform with a function family ψa,τ(t) as the integral kernel [4], shown as follows * , 1 ( , ) ( ) ( ) ( ), ( ) x a t WT a x t dt x t t a a τ τ τ ψ ψ +∞ −∞ − = =< > ∫ , (1) where ψa,τ(t) is generated by dilation and translation from the mother wavelet ψ(t) shown as follows , 1 ( ) ( ) a t t aa τ τ ψ ψ − = , (2) where a is a scale factor (in real engineering application, only a>0 is discussed), and τ is time location.
The high frequency and wide range distribution are the key characteristics for AE signals.
Particles inside martial (atoms, molecules and particle swarm) will generate elastic waves from the transient release of strain energy as a result of the relative motion inside the materials.
AE is defined as transient elastic waves generated from a rapid release of strain energy caused by a deformation or damage within or on the surface of a material [1].
Let x (t) be a squared integrable function, i.e. x(t)∈L2(R), the CWT of this function is defined as the integral transform with a function family ψa,τ(t) as the integral kernel [4], shown as follows * , 1 ( , ) ( ) ( ) ( ), ( ) x a t WT a x t dt x t t a a τ τ τ ψ ψ +∞ −∞ − = =< > ∫ , (1) where ψa,τ(t) is generated by dilation and translation from the mother wavelet ψ(t) shown as follows , 1 ( ) ( ) a t t aa τ τ ψ ψ − = , (2) where a is a scale factor (in real engineering application, only a>0 is discussed), and τ is time location.
The high frequency and wide range distribution are the key characteristics for AE signals.