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Online since: April 2010
Authors: Jian Feng, Chang Rui Zhang, Qing Fu Gao, Jun Zong Feng, Wei Wu, Yong Gang Jiang
Mechanical Properties of Aerogel-Ceramic Fiber Composites
Gao Qing-fu
a, Feng Jian, Zhang Chang-rui, Feng Jun-zong, Wu Wei and
Jiang Yong-gang
State Key Laboratory of Advanced Ceramic Fibers & Composites, College of Aerospace and
Materials Engineering, National University of Defense Technology, ChangSha 410073, China
a
nudtgqf@sohu.com
Keywords: Aerogel; Mechanical property; Fiber volume fraction
Abstract.
At first, the fibrous materials were pre-shaped using a mold and aerogel precursors were poured into the mold so as to cover the fibers.
The applications of fiber-aerogel insulation composites require that materials have satisfactory mechanical strength not only at ambient temperature but also at high temperature.
The reason for mechanical strength increasing of fiber-aerogel insulation materials at 600 °C is as follows.
At first, the fibrous materials were pre-shaped using a mold and aerogel precursors were poured into the mold so as to cover the fibers.
The applications of fiber-aerogel insulation composites require that materials have satisfactory mechanical strength not only at ambient temperature but also at high temperature.
The reason for mechanical strength increasing of fiber-aerogel insulation materials at 600 °C is as follows.
Online since: April 2011
Authors: Wit Grzesik, Marian Bartoszuk
Grzesik1, b
1Opole University of Technology, Department of Manufacturing Engineering
and Production Automation, 45-217 Opole, 5th Mikolajczyka St., Poland
a m.bartoszuk@po.opole.pl, b w.grzesik@po.opole.pl
Keywords: cutting process, cutting temperature, FDA modelling.
Other sources of computation errors can be disturbances of heat flow at the tool-chip interface or temperature-dependent thermal properties of the tool and workpiece materials.
The numerically predicted values of the average interface temperature were compared with measured values obtained by means of natural thermocouple method which was calibrated for selected pair of tool and workpiece materials.
Machining and Machinability of Materials, Vol. 6 (2009), No. ½, p. 43-53
Grzesik: Advanced Machining Processes of Metallic Materials, (Elsevier, Amsterdam 2008).
Other sources of computation errors can be disturbances of heat flow at the tool-chip interface or temperature-dependent thermal properties of the tool and workpiece materials.
The numerically predicted values of the average interface temperature were compared with measured values obtained by means of natural thermocouple method which was calibrated for selected pair of tool and workpiece materials.
Machining and Machinability of Materials, Vol. 6 (2009), No. ½, p. 43-53
Grzesik: Advanced Machining Processes of Metallic Materials, (Elsevier, Amsterdam 2008).
Online since: October 2011
Authors: Bao Guo Sun, Yuan Li She, Xiu Ting Li, Yue Gang Lv, Hong Xia Song
Screening of Actinomycetes with High Producing Xylanase
She Yuan-li, Li Xiu-ting*, Sun Bao-guo, Lv Yue-gang, Song Hong-xia
Department of Food Science, School of Chemical and Environmental Engineering, Beijing Technology and Business University; Beijing Key Laboratory of Flavor Chemistry; Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing P.
E-mail: lixt@th.btbu.edu.cn(Xiuting Li).Address: School of Chemical and Environmental Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, P.R.
Materials and Methods 2.1 Chemicals Birchwood xylan was purchased from Sigma (Germany).
Biochemical Engineering Journal. 35, 136-141
Biochemical Engineering Journal. 40, 348-356
E-mail: lixt@th.btbu.edu.cn(Xiuting Li).Address: School of Chemical and Environmental Engineering, Beijing Technology and Business University, No.33, Fucheng Road, Beijing 100048, P.R.
Materials and Methods 2.1 Chemicals Birchwood xylan was purchased from Sigma (Germany).
Biochemical Engineering Journal. 35, 136-141
Biochemical Engineering Journal. 40, 348-356
Online since: October 2014
Authors: Xiu Guo Lu, Pan Lin, Qi Wu Jie
Study of pretreatment of textile wastewater using CaO2/H+/Fe2+ advanced Fenton-like oxidation technology
Lu XiuGuo1, a, Lin Pan2,b and Jie QiWu3,c
1School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, China
2School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, China
3School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, China
a149862562@qq.com, b947777981@qq.com, C923126627@qq.com
Key words: Textile Wastewater; CaO2; COD removal efficiency; Decolorization rate
Abstract.
Instrument: ZD-8808 type thermostatic oscillator (the jintan city huacheng kaiyuan experimental instrument factory); HACH spectrophotometer(DR/2500); WMX microwave sealed digestion COD measuring instrument(Shantou sea engineering corporation); JPHS- 3E pH meter (Shanghai fine clay magnetic instrument factory). 1.2 The experimental steps 1.2.1 CaO2/H+/Fe2+ Oxidation experiment Take 50mL textile wastewater, adjusting the pH, add CaO2, FeSO4, reaction for a period of time under 25˚C, filtering, measure the COD removal rate and the decolorization rate.
Journal of Hazardous Materials. 152(2008):1164-1170
Journal of Environmental Chemical Engineering, 2014,2: 557–572
Instrument: ZD-8808 type thermostatic oscillator (the jintan city huacheng kaiyuan experimental instrument factory); HACH spectrophotometer(DR/2500); WMX microwave sealed digestion COD measuring instrument(Shantou sea engineering corporation); JPHS- 3E pH meter (Shanghai fine clay magnetic instrument factory). 1.2 The experimental steps 1.2.1 CaO2/H+/Fe2+ Oxidation experiment Take 50mL textile wastewater, adjusting the pH, add CaO2, FeSO4, reaction for a period of time under 25˚C, filtering, measure the COD removal rate and the decolorization rate.
Journal of Hazardous Materials. 152(2008):1164-1170
Journal of Environmental Chemical Engineering, 2014,2: 557–572
Online since: October 2014
Authors: Erlend Alfnes, Natalia Iakymenko, Maria Kollberg Tomassen
Computers & industrial engineering, 2009. 57(3): p. 1033-1042
Frontiers of Mechanical Engineering, 2012. 7(3): p. 256-267
Journal of Engineering and Technology Management, 1995. 12(1): p. 27-55
Computers & industrial engineering, 1991. 21(1): p. 29-33
Journal of Engineering and Technology Management, 2001. 18(2): p. 157-184
Frontiers of Mechanical Engineering, 2012. 7(3): p. 256-267
Journal of Engineering and Technology Management, 1995. 12(1): p. 27-55
Computers & industrial engineering, 1991. 21(1): p. 29-33
Journal of Engineering and Technology Management, 2001. 18(2): p. 157-184
Online since: July 2003
Authors: Alessandro de Stefano, Dionisio Bernal
Journal Citation (to be inserted by the publisher)
Copyright by Trans Tech Publications
Diagnosis of Structural Damage from Non-Stationary Output-Only
Measurements
Dionisio Bernal
1, Alessandro De Stefano
2
1
Associate Professor, Department of Civil and Environmental Engineering, 427 Snell Engineering
Center, Northeastern University, Boston MA 02115, U.S.A bernal@neu.edu
2
Professor, Dipartimento di Ingegneria Strutturale e Geotecnica, Politecnico di Torino, C.so Duca
degli Abruzzi 24, Torino, Italy, alessandro.destefano@polito.it
Keywords: Modal Scaling, Flexibility, Damage Localization, DLV
Abstract.
In civil engineering applications it is often necessary to perform the modal identification exclusively from output signals.
Introduction The development of robust techniques for fault detection and localization is an important goal in structural engineering.
[3] Bernal D. (2002), "Load Vectors for Damage Localization", Journal of Engineering Mechanics, ASCE, Vol.128, No.1, pp. 7-14
[5] Ceravolo, R., De Stefano, A., Molinari, F. (2001) Developments and Comparisons on the Definition of an Instantaneous Damping Estimator for Structures under Natural Excitation (Key Engineering Materials. 204-205, 2001, p. 231-240)
In civil engineering applications it is often necessary to perform the modal identification exclusively from output signals.
Introduction The development of robust techniques for fault detection and localization is an important goal in structural engineering.
[3] Bernal D. (2002), "Load Vectors for Damage Localization", Journal of Engineering Mechanics, ASCE, Vol.128, No.1, pp. 7-14
[5] Ceravolo, R., De Stefano, A., Molinari, F. (2001) Developments and Comparisons on the Definition of an Instantaneous Damping Estimator for Structures under Natural Excitation (Key Engineering Materials. 204-205, 2001, p. 231-240)
Online since: December 2012
Authors: Dan Yi, Cui Zhang, Jian Hua Wang, Hao Liu, Zhifeng Liu
It’s the key point to determine the parts layer and parameters layer, and affected by their feedback at the same time, in this way to further improve their structure.
Chinese Journal of Mechanical Engineering, 2003, 39(5):82-87.
Abstracting and Exploring Functional Design Information for Conceptual Mechanical Product Design .Engineering with Computer 2000, 16(1):36-52
Tool For the Management of Concurrent Conceptual Engineering design[J].Concurrent Engineering 1998,6(2):111-112
Chinese Journal of Mechanical Engineering, 2006, 42(10) (In Chinese) [10] Hsu W, Liu B.
Chinese Journal of Mechanical Engineering, 2003, 39(5):82-87.
Abstracting and Exploring Functional Design Information for Conceptual Mechanical Product Design .Engineering with Computer 2000, 16(1):36-52
Tool For the Management of Concurrent Conceptual Engineering design[J].Concurrent Engineering 1998,6(2):111-112
Chinese Journal of Mechanical Engineering, 2006, 42(10) (In Chinese) [10] Hsu W, Liu B.
Online since: October 2012
Authors: Hong Hua, Shun Bing Ou, Yong Zhong Zeng, Xiao Bing Liu
(in Chinese)
[6] Peisheng Jiang, Journal of Irrigation and Drainage of Mechanical Engineering, Vol. 28 (1987), p.282-285.
The ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009, Vol. 1( 2009) , p.611-617
Chinese Journal of Mechanical Engineering (English Edition), Vol. 7 (December 2004), p.623-627
The ASME Heat Transfer/Fluids Engineering Summer Conference 2004, HT/FED 2004, Vol. 2A(2004), p.461-467
(in Chinese) [15] Shengkai Chai, Xingqi Luo, Weili Liao, Journal of Irrigation and Drainage of Mechanical Engineering, Vol. 1(2004).
The ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009, Vol. 1( 2009) , p.611-617
Chinese Journal of Mechanical Engineering (English Edition), Vol. 7 (December 2004), p.623-627
The ASME Heat Transfer/Fluids Engineering Summer Conference 2004, HT/FED 2004, Vol. 2A(2004), p.461-467
(in Chinese) [15] Shengkai Chai, Xingqi Luo, Weili Liao, Journal of Irrigation and Drainage of Mechanical Engineering, Vol. 1(2004).
Online since: January 2013
Authors: Yong Peng Luo, Jian Ping Han
Introduction
Finite element modeling is a very important tool to analyze the engineering structures.
Cai, Bridge model updating using response surface method and genetic algorithm, Journal of Bridge Engineering. 15 (2010) 553-564
Gylltoft, Improved bridge evaluation through finite element model updating using static and dynamic measurements, Engineering Structures. 31 (2009) 1477-1485
China Civil Engineering Journal, 44(2) (2011) 90-98
[6] Wei-Xin Ren, Hua-Bing Chen, Finite element model updating in structural dynamics by using the response surface method, Engineering Structures. 32 (2010) 2455-2465
Cai, Bridge model updating using response surface method and genetic algorithm, Journal of Bridge Engineering. 15 (2010) 553-564
Gylltoft, Improved bridge evaluation through finite element model updating using static and dynamic measurements, Engineering Structures. 31 (2009) 1477-1485
China Civil Engineering Journal, 44(2) (2011) 90-98
[6] Wei-Xin Ren, Hua-Bing Chen, Finite element model updating in structural dynamics by using the response surface method, Engineering Structures. 32 (2010) 2455-2465
Online since: July 2014
Authors: Yu Lan Cheng
bridge construction
The project includes engineering tenders bridge substructure bridge structures, bridge superstructure, bridge substructure works by friction pile group pile foundation, pile foundation and broaden the base, pillar structure using gantry pier, a single pier.
For parts of complex shape , with a 1:1 computer lofting determine its geometry, and the use of fine -cut under CNC cutting machine materials .
Summary In this paper, Urumqi, East Outer Ring Road Expressway Lot B-6 expansion and renovation project examples engineering features, explore the bridge engineering prestressed hollow beams, steel box girder, composite beam construction techniques for future similar projects to learn summary of construction experience.
Acknowledgements Xinjiang university research program focused on scientific research projects XJEDU2008I61 "Asphalt key green energy technology has the characteristics of Xinjiang" project Scientific research project focused on the subject of Xinjiang Institute of Vocational Education XJZJXHZ09-005"Xinjiang construction engineering practice base construction, running mechanism and sharing policy research" project.
[4] First Author: Cheng Yulan, Female, born in 1964, Xinjiang Construction Vocational and Technical Institute of Architectural Engineering, associate professor, engaged in civil engineering work of teaching, E-mail: 1554270070@qq.com Tel: 15276675311
For parts of complex shape , with a 1:1 computer lofting determine its geometry, and the use of fine -cut under CNC cutting machine materials .
Summary In this paper, Urumqi, East Outer Ring Road Expressway Lot B-6 expansion and renovation project examples engineering features, explore the bridge engineering prestressed hollow beams, steel box girder, composite beam construction techniques for future similar projects to learn summary of construction experience.
Acknowledgements Xinjiang university research program focused on scientific research projects XJEDU2008I61 "Asphalt key green energy technology has the characteristics of Xinjiang" project Scientific research project focused on the subject of Xinjiang Institute of Vocational Education XJZJXHZ09-005"Xinjiang construction engineering practice base construction, running mechanism and sharing policy research" project.
[4] First Author: Cheng Yulan, Female, born in 1964, Xinjiang Construction Vocational and Technical Institute of Architectural Engineering, associate professor, engaged in civil engineering work of teaching, E-mail: 1554270070@qq.com Tel: 15276675311