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Online since: May 2012
Authors: Bin Xia Xue, Lin Hong
On the other hand, the rigidity of the lateral force is strong for the filled walls, therefore the distributed seismic force is large with low strength for the materials, which cause the serious crack and destroy.
Moreover it includes increasing the setting of the structural column and improving the ratio of the masonry intensity and the mortar materials to guarantee the quality of the masonry and upgrade the reliability of the structural design.
The four corners of the buildings is the key part to ensure the integrity of the structure.
To address the crack of the infill wall of the frame structure, the gap should be left between the infill wall and frame column, which is filled with flexible building materials, to leave enough space for deformation of the frame column.
Journal of Disaster Prevention and Mitigation Engineering(In Chinese). 2009, 29(5):591-595
Moreover it includes increasing the setting of the structural column and improving the ratio of the masonry intensity and the mortar materials to guarantee the quality of the masonry and upgrade the reliability of the structural design.
The four corners of the buildings is the key part to ensure the integrity of the structure.
To address the crack of the infill wall of the frame structure, the gap should be left between the infill wall and frame column, which is filled with flexible building materials, to leave enough space for deformation of the frame column.
Journal of Disaster Prevention and Mitigation Engineering(In Chinese). 2009, 29(5):591-595
Online since: April 2011
Authors: Jing Yong Liu, Xun An Ning
The Characteristic and Mechanism of Lead Pollution in Soil Profiles from a Sulphuric Acid Slag Pile Sit in Guangdong,China
Jingyong Liu1,a, Xunan Ning1,b
1Faculty of Environmental Science and Engineering, Guangdong University of Technology, Guangdong Guangzhou,510006,China
awww53991@sohu.com ,bCorresponding author: ningxunan666@126.com
Keywords: sulphuric acid slag; soil; lead pollution
Abstract.
The Yunfu pyrite mine in Western Guangdong, the largest chemical origin materials, was the largest deposits of pyrite in Asia with the pyrite reserves of 2×108t.
Materials and Methods Samples collected.
The standard solution for Pb quantification was prepared by employing the same procedures as for field sample by dissolving a natural standard reference soil (GBW07406) acquired from the National research Center for Certified Reference Materials, China.
It can be drawn that the acidification of alkaline waste was the key factor in the releasing of Pb with the acid rain leaching.
The Yunfu pyrite mine in Western Guangdong, the largest chemical origin materials, was the largest deposits of pyrite in Asia with the pyrite reserves of 2×108t.
Materials and Methods Samples collected.
The standard solution for Pb quantification was prepared by employing the same procedures as for field sample by dissolving a natural standard reference soil (GBW07406) acquired from the National research Center for Certified Reference Materials, China.
It can be drawn that the acidification of alkaline waste was the key factor in the releasing of Pb with the acid rain leaching.
Online since: July 2011
Authors: Liang Yih Liu, Hsiung Cheng Lin, Chao Hung Chen
Microprocessor-based Control using Local-loop Approach in Robot Joint Movement
Hsiung-Cheng Lin1,a, Chao Hung Chen2,b, Liang-Yih Liu2,c
1Department of Electronic Engineering, National Chin-Yi University of Technology, Taiwan
2Department of Automation Engineering, Chienkuo Technology University, Taiwan
ahclin@ncut.edu.tw, bjauhorng.chen@gmail.com, clliu@cc.ctu.edu.tw
Key words: Local-loop, robot action control, RS232, PWM, motor driver
Abstract.
Particularly, this paper presented a good lecture material for students to learn their school-based knowledge to be applied to a robot interface and control system design.
Kaber, “Service robot anthropomorphism and interface design for emotion in human-robot interaction”, 2008 IEEE International Conference on Automation Science and Engineering (CASE 2008), pp.674-679
Particularly, this paper presented a good lecture material for students to learn their school-based knowledge to be applied to a robot interface and control system design.
Kaber, “Service robot anthropomorphism and interface design for emotion in human-robot interaction”, 2008 IEEE International Conference on Automation Science and Engineering (CASE 2008), pp.674-679
Online since: April 2014
Authors: Ji Li Liu, De Yong Chen, Jun Bo Wang
Control system of an Electromagnetic Vibrating Ring Gyroscope
Jili Liu1, a, Deyong Chen1,b and Junbo Wang1,c
1 State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, No. 19 Beisihuanxi Road, Beijing, China, 100190
aliujili09@mails.ucas.ac.cn, bdychen@mail.ie.ac.cn, cjbwang@mail.ie.ac.cn
Keywords: control system; electromagnetic vibrating ring gyroscope; amplitude stability; drive frequency; electrode trimming.
Due to anisotropy of the silicon material and deviations of the fabrication process, the split of the two mode resonance frequencies occurs.
Optics and Precision Engineering,2099,17(8):1915-1921
Optics and Precision Engineering,2009,Vol.17(6)
Nanotechnology and Precision Engineering, 2012, Vol. 4(3):322-326
Due to anisotropy of the silicon material and deviations of the fabrication process, the split of the two mode resonance frequencies occurs.
Optics and Precision Engineering,2099,17(8):1915-1921
Optics and Precision Engineering,2009,Vol.17(6)
Nanotechnology and Precision Engineering, 2012, Vol. 4(3):322-326
Online since: December 2018
Authors: Osamu Umezawa, Wei Bo Li
A Subsurface Fatigue Crack Generation Model in Near Alpha Titanium at Low Temperature
Osamu Umezawa1,a* and Weibo Li2,b
1Faculty of Engineering, Yokohama National University, Yokohama, 240-8501, Japan
2Graduate School of Engineering, Yokohama National University, Yokohama, 240-8501, Japan
aumezawa@ynu.ac.jp, bli-weibo-wv@ynu.jp
Keywords: High-cycle fatigue, Microcrack, Strain incompatibility, Taylor factor, Critical resolved shear stress, Titanium, Microtexture.
The size of the subsurface crack initiation sites was increased as the decrease of maximum cyclic stress.[17] The fatigue limit of the material containing pre-existing defects was determined from the relationship between the defect size and threshold stress range.[18-19] The ideas are based on the assumption that a small defect is equivalent to a microcrack (Stage I crack) and that the microcrack growth is retained under the fatigue limit.
Umezawa, A review of subsurface crack initiation models in high-cycle fatigue for titanium alloys, Key Eng.
Balachandran (Ed.), Advances in Cryogenic Engineering, Vol. 60, AIP, N.Y., 2014, 327-332
The size of the subsurface crack initiation sites was increased as the decrease of maximum cyclic stress.[17] The fatigue limit of the material containing pre-existing defects was determined from the relationship between the defect size and threshold stress range.[18-19] The ideas are based on the assumption that a small defect is equivalent to a microcrack (Stage I crack) and that the microcrack growth is retained under the fatigue limit.
Umezawa, A review of subsurface crack initiation models in high-cycle fatigue for titanium alloys, Key Eng.
Balachandran (Ed.), Advances in Cryogenic Engineering, Vol. 60, AIP, N.Y., 2014, 327-332
Online since: September 2013
Authors: Wei Liu, Xiong Hui Zhou, Qiang Niu, Peng Wang, Kun Jiang
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
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
Online since: September 2015
Authors: Muzamir Isa, Chai Chang Yii, Mohamad Nur Khairul Hafizi Rohani, S.I.S. Hassan
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
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
Online since: December 2014
Authors: Yong Gang Shi, Hao Wen, Hai Feng Gong, Zi Cun Li, Bin Su, Ping Sun
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
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
Online since: April 2015
Authors: Xue Dong Chen, Wei He Guan, Zhi Chao Fan, Jie Dong, Bing Wang, Tie Cheng Yang, Jian Hua Pan
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
(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
Online since: February 2012
Authors: Shi Wei Zhao, Wen Fang Qu, Guo Wei
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
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