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Online since: August 2013
Authors: Lucian Adrian Mihaila, Marius Pascu, Dragoș Andrioaia, Gheorghe Stan
System for Compensating the Rigidity of the Hydrostatic Guideways
of the Column Saddle Subassembly of the Boring and Milling Machines
PASCU Mariusa, STAN Gheorgheb, ANDRIOAIA Dragoșc
and MIHĂILĂ Luciand
”Vasile Alecsandri” University of Bacau, Departament of Industrial Engineering,
Calea MarasestI, No. 157, 600115 Bacau, Romania
apascu_marius83@yahoo.com, bghstan@ub.ro, cdragos.andrioaia@ub.ro, dlucian_mihaila@yahoo.com
Keywords: guideways, pockets, accuracy, compensation, thickness.
Similarly, there are the supports D and E composed of two hydrostatic pockets each, 17, 20, 18 and 19, representing the wedges (keys) of the main guide way F.
The contact surface between the two parts (live surface) is made by ink-spotting the pocket and removing a layer of material.
Freier, Comparison of performance of compensated and uncompensated hydrostatic guidance systems, Journal of Engineering for Industry. (2007) 154-165
Similarly, there are the supports D and E composed of two hydrostatic pockets each, 17, 20, 18 and 19, representing the wedges (keys) of the main guide way F.
The contact surface between the two parts (live surface) is made by ink-spotting the pocket and removing a layer of material.
Freier, Comparison of performance of compensated and uncompensated hydrostatic guidance systems, Journal of Engineering for Industry. (2007) 154-165
Online since: September 2014
Authors: Hui Chen, Xiao Juan Zhang
The Ecological Planning of Riverside Region in Lanzhou
Xiaojuan Zhang1, a *, Hui Chen2,b
1 School of Design Art Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
2 School of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
asober1979@sina.com, bjdch220@sina.com
Keywords: riverside region, urban pattern, ecological, the yellow river
Abstract.
This plan has given the four key research topics-"tropical, drought, mountain, city".
To be City Card and make cultural revival After material living standards improved, people have higher requirements in spiritual life.
This plan has given the four key research topics-"tropical, drought, mountain, city".
To be City Card and make cultural revival After material living standards improved, people have higher requirements in spiritual life.
Online since: August 2014
Authors: Ai Ping Zhang, Jie Liu, Yan Feng He
The waste collection vehicle Arc Routing Problem with turn constraints
Jie Liu1, a, Yanfeng He2,b and Aiping Zhang3,c
1School of Urban and Rural Construction Chengdu University, Chengdu, Sichuan, 610106, China
2Hydrochina chengdu engineering corporation, Chengdu, Sichuan, 610000, China
3School of Chemistry and Material Science, Sichuan Normal University, Chengdu 610068, China
a27728881@qq.com, bheyanfeng828@sina.com, c396078371@qq.com
Keywords: waste collection management; Waste Collection Vehicle Arc Routing Problem with turn constraints; reverse logistics.
One key factor for proper operation of collection systems is the design of appropriate collection routes for each type of garbage (fraction), which may or may not be separately collected (in some cases due to technical design constraints and different treatment processes).
ACO Algorithms for the Traveling Salesman Problem, Evolutionary Algorithms in Engineering and Computer Science: Recent Advances in Genetic Algorithms, Evolution Strategies, Evolutionary Programming.
One key factor for proper operation of collection systems is the design of appropriate collection routes for each type of garbage (fraction), which may or may not be separately collected (in some cases due to technical design constraints and different treatment processes).
ACO Algorithms for the Traveling Salesman Problem, Evolutionary Algorithms in Engineering and Computer Science: Recent Advances in Genetic Algorithms, Evolution Strategies, Evolutionary Programming.
Online since: September 2013
Authors: Sema Patchim, Watcharin Po-Ngaen
THE DEVELOPMENT OF EMBEDDED SYSTEM FOR ENERGY SAVING IN ELECTRO-HYDRAULIC SYSTEM
Sema Patchim1,2,a and Watcharin Po-ngaen2,b
1Faculty of Engineering, Sripatum University Bangkok 10900, Thailand
2Faculty of Technical Education King Mongkut’s University of Technology North Bangkok
Bangkok 10800 Thailand
asema.pa@spu.ac.th, bvpn@kmutnb.ac.th
Keywords: Energy Saving, Electro-Hydraulic System, Embedded system
Abstract.
Therefore it is very challenging to find out how to reduce the energy loss and heat generation in a conventional hydraulic system and what is the key for energy saving if a common pump is used to supply flow rate to the circuit, this is primarily due to using a controller for electro-hydraulic system is developed to improve the energy saving performance of the hydraulic system considerations.
The torque developed by the induction motor follows the equation below (6) Despising the voltage drop caused by the stator impedance, the magnetizing flux is found to be (7) where T is torque available on the shaft (N.m), fm is magnetizing flux (Wb), I2 is rotor current (A) depends on load, V1 is stator voltage (V), and k1&k2 are constants depend on material and on the machine design.
International Journal of Engineering, Science and Technology Vol. 3, No. 4( 2011), p. 276-283 [4] Li,C.C., X.D.
Therefore it is very challenging to find out how to reduce the energy loss and heat generation in a conventional hydraulic system and what is the key for energy saving if a common pump is used to supply flow rate to the circuit, this is primarily due to using a controller for electro-hydraulic system is developed to improve the energy saving performance of the hydraulic system considerations.
The torque developed by the induction motor follows the equation below (6) Despising the voltage drop caused by the stator impedance, the magnetizing flux is found to be (7) where T is torque available on the shaft (N.m), fm is magnetizing flux (Wb), I2 is rotor current (A) depends on load, V1 is stator voltage (V), and k1&k2 are constants depend on material and on the machine design.
International Journal of Engineering, Science and Technology Vol. 3, No. 4( 2011), p. 276-283 [4] Li,C.C., X.D.
Online since: August 2014
Authors: Zhou Wei Zhang, Jia Xing Xue, Ya Hong Wang
Research on Cryogenic Characteristics in Spatial Cold-shield System
Zhouwei Zhang 1, 2, a, Yahong Wang 1, 2, b and Jiaxing Xue 1, c
1 School of Environment and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
2Gansu Zhongyuan Energy and Power Engineering Co., Ltd., Lanzhou 730070, China
azhangzwemail@126.com, b0701wangyahong@163.com, c316221260@qq.com
Keywords: Spatial Cold shield; Infrared radiation; Equivalent radiation; Liquid nitrogen
Abstract.
It included capillary materials, pressure-relief throttle valve, vapor inlet pipes, inner layers, layered reservoirs, outlet pipes, diffuser and outer layers etc.
Dalle Carbonare, “The thermal shield for the ITER magnet system: thermal, structural and assembly aspects,” Fusion Engineering and Design, 58–59 (2001), pp.177–182
Dalle Carbonare, “The ITER thermal shields for magnet system: specific design, assembly and structural issues,” Fusion Engineering and Design, 66–68 (2003), pp. 1049–1054
Grigoriev, “The ITER thermal shields for the magnet system: Design evolution and analysis,” Fusion Engineering and Design, Volumes 75-79, November 2005, Pages 155-162
It included capillary materials, pressure-relief throttle valve, vapor inlet pipes, inner layers, layered reservoirs, outlet pipes, diffuser and outer layers etc.
Dalle Carbonare, “The thermal shield for the ITER magnet system: thermal, structural and assembly aspects,” Fusion Engineering and Design, 58–59 (2001), pp.177–182
Dalle Carbonare, “The ITER thermal shields for magnet system: specific design, assembly and structural issues,” Fusion Engineering and Design, 66–68 (2003), pp. 1049–1054
Grigoriev, “The ITER thermal shields for the magnet system: Design evolution and analysis,” Fusion Engineering and Design, Volumes 75-79, November 2005, Pages 155-162
Online since: September 2004
Authors: Y. Horie, Y. Hamate
These fluctuations are attributed to shock interactions with materials interfaces.
These studies have Heat Conduction Mass Flux Heat Flux Chemical Reaction Localized Heating Interface Applied Load Gas Solid (Heated) Solid (Cold) Contact Stress Pore Collapse Shear Banding Friction provided significant information to better understand physical processes in shocked heterogeneous materials, but the technique are not practical for large scale engineering calculations even with today's parallel computers .
Materials data are those for RDX in [4].
In such an environment averaged field quantities are inadequate to describe initiation, failure, and growth of energetic materials.
However, there is much to be improved before the new approach will become suitable for engineering calculations.
These studies have Heat Conduction Mass Flux Heat Flux Chemical Reaction Localized Heating Interface Applied Load Gas Solid (Heated) Solid (Cold) Contact Stress Pore Collapse Shear Banding Friction provided significant information to better understand physical processes in shocked heterogeneous materials, but the technique are not practical for large scale engineering calculations even with today's parallel computers .
Materials data are those for RDX in [4].
In such an environment averaged field quantities are inadequate to describe initiation, failure, and growth of energetic materials.
However, there is much to be improved before the new approach will become suitable for engineering calculations.
Online since: April 2009
Authors: Jing Tian, Li Juan Xu, Yu Yong Chen, Fan Tao Kong, Yan Fei Chen, Shu Long Xiao
Research on the Hot Precision Processing of TiAl Alloys
Yuyong Chen, Yanfei Chen*, Shulong Xiao, Fantao Kong, Jing Tian, Lijuan Xu
National Key Laboratory for Precision Hot Processing of Metals, School of Materials Science and
Engineering, Harbin Institute of Technology, Harbin 150001, China
*E-mail: yfchn@hotmail.com
Keywords: γ-TiAl alloys, Hot precision processing, Microstructures, Mechanical properties
Abstract: γ-TiAl components due to their unique properties are on the verge of industrial application
for increasing operation temperature and improving energy efficiency, especially in aerospace and
automobile areas.
However, cast Ti-48Al-2Cr-2Nb cannot for engineering application due to low plasticity and low strength coming from coarse lamellar.
Investment casting of TiAl alloys Investment casting was chosen as the first process route for producing TiAl alloys components as in most metallic materials.
The ingot processing route of TiAl alloys could provide cost-effective process route for industrial usage and is on the threshold of engineering applications.
However, there is a persistent need to the transfer from experimental research to engineering components.
However, cast Ti-48Al-2Cr-2Nb cannot for engineering application due to low plasticity and low strength coming from coarse lamellar.
Investment casting of TiAl alloys Investment casting was chosen as the first process route for producing TiAl alloys components as in most metallic materials.
The ingot processing route of TiAl alloys could provide cost-effective process route for industrial usage and is on the threshold of engineering applications.
However, there is a persistent need to the transfer from experimental research to engineering components.
Online since: May 2025
Authors: Vojtěch Kostiha, David Vašátko, František Girgle, Petr Štěpánek, Kateřina Mrkvova
FRP – 45° stirrups (reverse position)
Materials.
Experimentally determined properties of the used materials (mean values) GFRP Concrete fftm [MPa] 1350 fcm [MPa] 30.4 EfRm [GPa] 52.5 Ecm [GPa] 24.5 Experiment setup.
References [1] FINAL DRAFRT FprEN 1992-1-1: Eurocode 2 - Design of concrete structures - Part 1-1: General rules and rules for buildings, bridges and civil engineering structures.
European Committee for Standardization, April 2023 [2] ČSN EN 1992-1-1: Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for civil engineering.
Journal of Building Engineering [online]. 2022, 46.
Experimentally determined properties of the used materials (mean values) GFRP Concrete fftm [MPa] 1350 fcm [MPa] 30.4 EfRm [GPa] 52.5 Ecm [GPa] 24.5 Experiment setup.
References [1] FINAL DRAFRT FprEN 1992-1-1: Eurocode 2 - Design of concrete structures - Part 1-1: General rules and rules for buildings, bridges and civil engineering structures.
European Committee for Standardization, April 2023 [2] ČSN EN 1992-1-1: Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for civil engineering.
Journal of Building Engineering [online]. 2022, 46.
Online since: June 2018
Authors: Li Yan Wang, Ning Yuan, Zhi Wei Liu, Bao Hang Han
Rattle-Type Diamine-Functionalized Mesoporous Silica Sphere for Carbon Dioxide Adsorption
Ning Yuan1,2,a *, Zhi-Wei Liu2, Li-Yan Wang1 and Bao-Hang Han2,b *
1School of Chemical & Environmental Engineering, China University of Mining & Technology, Beijing 100083, China
2CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
aning.yuan@hotmail.com, bhanbh@nanoctr.cn
Keywords: Rattle-type structure, yolk-shell structure, mesoporous silica, self-templating, carbon dioxide adsorption
Abstract.
Introduction Over the past decades, mesoporous silica materials with special morphology, such as hollow, core-shell, and rattle-type structures, have attracted increasing attention for chemists and materials scientists [1–3].
Typically, the chemical components of shell and core materials in a rattle-type structure are different, and thus interesting properties can be derived from these materials.
Experimental Materials.
Uni, Novel Organic / Inorganic Hybrid Materials by Covalent Anchoring of Phenothiazines on MCM-41, Chem.
Introduction Over the past decades, mesoporous silica materials with special morphology, such as hollow, core-shell, and rattle-type structures, have attracted increasing attention for chemists and materials scientists [1–3].
Typically, the chemical components of shell and core materials in a rattle-type structure are different, and thus interesting properties can be derived from these materials.
Experimental Materials.
Uni, Novel Organic / Inorganic Hybrid Materials by Covalent Anchoring of Phenothiazines on MCM-41, Chem.
Online since: May 2012
Authors: Jun Li, Jia Wei Hu, Yu Chen, Chang Wen Wang, Guo Yang Liu, Yan Li
Optimization of Magnetic Coagulation Process for River Water Treatment using the Response Surface Method
Jiawei Hua, Jun Lia,*, Yu Chena, Changwen Wanga, Yan Lia, Guoyang Liua
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering
Beijing University of Technology, Beijing 100124, China
* Corresponding author.
Response surface methodology (RSM) usually used for chemical engineering and pharmaceutical engineering to prescription screening and technology optimization [10,11].
The experimental research can provide technology exploration and investigative basis for further micro-polluted river water disposal. 1 Experimental 1.1 Materials The water sample was fed from Beijing Tonghui River.
Enviroment Engineering. 25 (2007) 12-15
Journal of Chemical Engineering of Chinese University. 24 (2010) 897-901
Response surface methodology (RSM) usually used for chemical engineering and pharmaceutical engineering to prescription screening and technology optimization [10,11].
The experimental research can provide technology exploration and investigative basis for further micro-polluted river water disposal. 1 Experimental 1.1 Materials The water sample was fed from Beijing Tonghui River.
Enviroment Engineering. 25 (2007) 12-15
Journal of Chemical Engineering of Chinese University. 24 (2010) 897-901