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Online since: May 2010
Authors: Jian Yao
Prediction of Building Energy Consumption At Early Design Stage
based on Artificial Neural Network
YAO Jian
Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo, China
email: yaojian@nbu.edu.cn
Keywords: Artificial Neural Network (ANN); Energy consumption; Building envelope
Abstract.
This study is significant for, it gives way to energy efficient buildings at the designing stage and will be helpful for architects and design engineers in decreasing the energy consumption of new constructed buildings.
This study is significant for, it gives way to energy efficient buildings at the designing stage and will be helpful for architects and design engineers in decreasing the energy consumption of new constructed buildings.
Online since: August 2013
Authors: Robert Černý, Eva Vejmelková
Thermal Properties of PVA-Fiber Reinforced Cement Composites at High Temperatures
Eva Vejmelková1,a and Robert Černý2,b
Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 16629 Prague 6, Czech Republic
acernyr@fsv.cvut.cz, beva.vejmelkova@fsv.cvut.cz
Keywords: fiber reinforced cement composites, polyvinyl alcohol, high temperatures, thermal properties.
Online since: June 2008
Authors: Jaroon Rungamornrat, Teerapong Senjuntichai
Singularity-reduced Integral Representations for Discontinuity in Smart
Materials
Jaroon Rungamornrat1, a and Teerapong Senjuntichai2, b
1, 2
Department of Civil Engineering, Chulalongkorn University, Bangkok, Thailand 10330
a
Jaroon.R@chula.ac.th, bfcetsj@eng.chula.ac.th
Keywords: Smart materials, Piezoelectric, Piezomagnetic, Integral relations, Cracks, Dislocations,
Singularity-reduced, Weakly singular, SGBEM.
Introduction In the past two decades, smart materials have gained significant applications in various engineering practices (e.g. smart structures, nondestructive testing devices, electronic devices, sensors and actuators).
Introduction In the past two decades, smart materials have gained significant applications in various engineering practices (e.g. smart structures, nondestructive testing devices, electronic devices, sensors and actuators).
Procedural Aspects of the Wedge Splitting Method to Measure the Fracture Energy of Ceramic Materials
Online since: June 2008
Authors: S. Ribeiro, J.S.C. Vieira, C.C.D. Exposito, J.A. Rodrigues
Rodrigues 3,b
1
Lorena School of Engineering - USP, C.
Materials and Methods The samples were prepared with the following materials: washed sand of medium coarseness for civil construction, Portland CPII-Z-32 cement manufactured by Companhia Cimento Portland Itaú, according to the Brazilian standard NBR 11578/1991, and potable water.
Tschegg: Materials Science & Engineering A Vol. 214 (1996), p. 53
Materials and Methods The samples were prepared with the following materials: washed sand of medium coarseness for civil construction, Portland CPII-Z-32 cement manufactured by Companhia Cimento Portland Itaú, according to the Brazilian standard NBR 11578/1991, and potable water.
Tschegg: Materials Science & Engineering A Vol. 214 (1996), p. 53
Online since: June 2007
Authors: Jian Hua Yin, Shan Yong Wang, X.J. Yu, Zhen Fang, Yun Yan
WANG
3,d and Y.YAN
1,e
1
Geotechnical Research Institute of Hohai University, Hohai University, China
2
Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, HK
3
Department of Building and Construction, City University of Hong Kong, HK
a
xjyu@hhu.edu.cn, bcezhenfang@gmail.com, ccejhyin@inet.polyu.edu.hk
d
bcwangsy@cityu.edu.hk, eyanyun53@163.com
Keywords: consolidation; marine clay; elastro-viscoplastic; finite element; UMAT
Abstract.
Journal of Geotechnical Engineering Division, ASCE, Vol. 100(8) (1974), pp. 889-904
Journal of Geotechnical Engineering Division, ASCE, Vol. 100(8) (1974), pp. 889-904
Online since: August 2014
Authors: Roszilah Hamid, Zuraidah Hashim
Effect of Metakaolin on the Strength and Pore Size Distribution of Concrete
Zuraidah Hashim1 and Roszilah Hamid1, a
1Department of Civil and Structural Engineering,
Faculty of Engineering and Built Environment,
Universiti Kebangsaan Malaysia,
43600 UKM Bangi, Selangor, Malaysia
aroszilah@eng.ukm.my
Keywords: Metakaolin, supplementary cementitious material, workability, compressive strength, pore diameter size.
Online since: March 2010
Authors: Ming Zhou, Xian Yi Meng, Yue Jin Wang, Zhen Li Gao, Yun Ping Dou, Bo Yan Tang, Mei Xia Yuan
Structural Analysis and Building an EDM Process Model
Ming Zhoua , Xianyi Mengb, Yuejin Wangc, Zhenli Gao
d
, Yunping Doue ,
Boyan Tangf, and Meixia Yuang
Department of Mechanical Engineering, Beijing Institute of Civil Engineering and Architecture,
Beijing, China, 100044
a
zhouming@bucea.edu.cn, bmengxianyi@bucea.edu.cn, cwangyuejin@bucea.edu.cn
d
gaozhenli@bucea.edu.cn, e
douyunping@bucea.edu.cn, ftangboyan@bucea.edu.cn
g
yuanmeixia@bucea.edu.cn
Keywords: Electrical discharge machining, Chaos, Correlation dimension, Predictive model.
Online since: September 2007
Authors: Imke Weich, Thomas Ummenhofer
Different procedures have been analysed in the last decades and some of them like grinding and
shot peening are already commonly used in civil or mechanical engineering.
N., Proceedings of the 16th International Offshore and Polar Engineering Conference, Vol.
N., Proceedings of the 16th International Offshore and Polar Engineering Conference, Vol.
Online since: August 2006
Authors: D. Bowness, A.C. Lock, D.J. Richards, W. Powrie
Powrie
d
School of Civil Engineering & the Environment, University of Southampton, Highfield,
Southampton SO17 1BJ, United Kingdom
a
d.bowness@soton.ac.uk, b a.c.lock@soton.ac.uk
c djr@soton.ac.uk, d wp@soton.ac.uk
Keywords: Video monitoring, Rail displacements, PIV, Webcam, Telescope
Abstract.
Acknowledgements The authors are grateful for the financial support of the Engineering and Physical Sciences Research Council (grant no.
Acknowledgements The authors are grateful for the financial support of the Engineering and Physical Sciences Research Council (grant no.
Online since: January 2015
Authors: Mariusz Żokowski, Paweł Majewski, Jarosław Spychała
Due to such operation modes, the MTBO (Mean Time between Overhauls) of the engine calculated in hours between subsequent repairs or overhauls is rather low compared to the engines used for driving a civil aircraft and usually limited to hundreds of hours.
Since engines were not provided with any on-board system for monitoring its vibrations and no previous amendments were made to technical objects of that type, the following points of preparation were indispensable: - the execution of the kinematic analyses of the engine under tests to identify its characteristic frequencies that could have occurred in the spectrum of the vibroacoustic signal; - the acquisition (from engineering and operation documentation as well as from direct contacts with the engine manufacturer) and analysis of all available information related to vibration measurements already carried out by the manufacturer, measurement points, current and maximum allowed vibration levels; - the development and calibration of necessary instruments suitable for the application of measuring vibrations in individual data recording paths; - the execution of measurements themselves with the further analyses of variations demonstrated by the vibroacoustic signal.
According to the rules of mechanical engineering, such design leads to the vibration spectrum that should incorporate the frequencies associated with the rotation speed of a turbocompressor (f0), a low-speed turbine (ft) with its subharmonics and subsequent harmonics, the rotation speed of the propeller shaft (fS), the zero-crossing frequency of propeller blades (5∙fS), the zero-crossing frequencies of turbine blades calculated as the product of rotation frequencies and the number of blades installed in individual rotors as well as frequencies associated with transmission ratios of the reducing gear and the gearbox used for driving power packs.
Since engines were not provided with any on-board system for monitoring its vibrations and no previous amendments were made to technical objects of that type, the following points of preparation were indispensable: - the execution of the kinematic analyses of the engine under tests to identify its characteristic frequencies that could have occurred in the spectrum of the vibroacoustic signal; - the acquisition (from engineering and operation documentation as well as from direct contacts with the engine manufacturer) and analysis of all available information related to vibration measurements already carried out by the manufacturer, measurement points, current and maximum allowed vibration levels; - the development and calibration of necessary instruments suitable for the application of measuring vibrations in individual data recording paths; - the execution of measurements themselves with the further analyses of variations demonstrated by the vibroacoustic signal.
According to the rules of mechanical engineering, such design leads to the vibration spectrum that should incorporate the frequencies associated with the rotation speed of a turbocompressor (f0), a low-speed turbine (ft) with its subharmonics and subsequent harmonics, the rotation speed of the propeller shaft (fS), the zero-crossing frequency of propeller blades (5∙fS), the zero-crossing frequencies of turbine blades calculated as the product of rotation frequencies and the number of blades installed in individual rotors as well as frequencies associated with transmission ratios of the reducing gear and the gearbox used for driving power packs.