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Online since: September 2003
Authors: X.H. Li, Y. Liao, B.Q. Jiao, Yu Ying Lu, Xuan Yang Lei
Citation & Key Engineering Materials Vols
Jiao Key Lab for Exploitation of Southwestern Resources & the Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, P.R.China Keywords: Numerical controlled water-cutter, Pulsed abrasive water jet, Natural rock materials machining Abstract.
Key Engineering Materials Vols. 275 Fig.1 Schematic of the hardware for the CNC Fig.2 Photo of CNC cabinet controlled water-cutter 1. water tank, 2. filter, 3. high pressure ram pump, 4. overflow valve, 5. pressure meter, 6. throttle, 7. unilateral valve, 8. cut-off valve, 9. abrasive barrel, 10,11. step motor in X and Y axils, 12. pulsed nozzle, 13.
Engineering Materials Vols. 279 As illustrated in Figs.9a and 9b, there exists an optimum stand-off distance ( 10/ 1 =dS , as shown in Fig.9) where the cutting depth and erosion volume with the CNC controlled water-cutter is as 1.72 times as that by pre-mixed AWJ.
In summary, the CNC controlled water-cutter could be widely used for machining various natural rock materials.
Jiao Key Lab for Exploitation of Southwestern Resources & the Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, P.R.China Keywords: Numerical controlled water-cutter, Pulsed abrasive water jet, Natural rock materials machining Abstract.
Key Engineering Materials Vols. 275 Fig.1 Schematic of the hardware for the CNC Fig.2 Photo of CNC cabinet controlled water-cutter 1. water tank, 2. filter, 3. high pressure ram pump, 4. overflow valve, 5. pressure meter, 6. throttle, 7. unilateral valve, 8. cut-off valve, 9. abrasive barrel, 10,11. step motor in X and Y axils, 12. pulsed nozzle, 13.
Engineering Materials Vols. 279 As illustrated in Figs.9a and 9b, there exists an optimum stand-off distance ( 10/ 1 =dS , as shown in Fig.9) where the cutting depth and erosion volume with the CNC controlled water-cutter is as 1.72 times as that by pre-mixed AWJ.
In summary, the CNC controlled water-cutter could be widely used for machining various natural rock materials.
Online since: September 2014
Authors: Ming Нong Zhou, Jing Yuan
Digital protection based on reverse engineering
Reverse engineering is refers to that the product was obtained from the actual sample and get the relevant technology of the new product manufacturing.
In order to achieve the effective mass of 3Ddigital workflow, complex irregular shape using reverse engineering scheme, as shown in figure 2.
Reverse engineering can be divided into data acquisition, data processing, surface reconstruction and other key technology.
Data acquisition is the first step of reverse engineering CAD modeling.
Zhou: Advanced Materials Research, Vol.403 (2012), p. 377
In order to achieve the effective mass of 3Ddigital workflow, complex irregular shape using reverse engineering scheme, as shown in figure 2.
Reverse engineering can be divided into data acquisition, data processing, surface reconstruction and other key technology.
Data acquisition is the first step of reverse engineering CAD modeling.
Zhou: Advanced Materials Research, Vol.403 (2012), p. 377
Online since: October 2012
Authors: Zhi Wei Wang, Ying Li Li
Study on Biomass Energy Materials---Briquetting Fuel and Its Applications in Power Generation
Yingli Li 1,2,a, Zhiwei Wang 3,4,b
1 College of Mechanical and Electrical Engineering, Henan Agricultural University,
Zhengzhou, China
2 Zhengzhou Technical College, Zhengzhou, China
3 Energy Research Institute Co.
,Ltd, Henan Academy of Sciences, Zhengzhou, China 4 Henan Key Lab of Biomass Energy, Zhengzhou, China ahnndbslyl@163.com, b bioenergy@163.com Keywords: Biomass; Energy materials; Briquetting fuel technology; Power generation technology Abstract.
Finally, there was an outlook for the development prospect of such energy materials and its power generation technology in China.
By taking briquetting fuel technology, the dispersed raw materials (mainly in agricultural and forestry residues) with uncertain shapes can be compressed into briquetting fuels with a certain geometry and lager density through processes of drying, chopping and briquetting, etc.
According to different heating positions for raw material, heating action to raw material can be divided into two kinds, i.e. heating at briquetting position only and heating respectively before putting raw materials into compressing mechanism and at briquetting position. (3) For common briquetting, namely forming under normal temperature and moisture condition, after corruption to a certain extent, fiber comes to be soft, wet, cracking and partly degraded, at which time it is easy to be briquetted; then extrude water out from the partly degraded agricultural and forestry residues with a simple die, thus the briquetting fuel can be got.
,Ltd, Henan Academy of Sciences, Zhengzhou, China 4 Henan Key Lab of Biomass Energy, Zhengzhou, China ahnndbslyl@163.com, b bioenergy@163.com Keywords: Biomass; Energy materials; Briquetting fuel technology; Power generation technology Abstract.
Finally, there was an outlook for the development prospect of such energy materials and its power generation technology in China.
By taking briquetting fuel technology, the dispersed raw materials (mainly in agricultural and forestry residues) with uncertain shapes can be compressed into briquetting fuels with a certain geometry and lager density through processes of drying, chopping and briquetting, etc.
According to different heating positions for raw material, heating action to raw material can be divided into two kinds, i.e. heating at briquetting position only and heating respectively before putting raw materials into compressing mechanism and at briquetting position. (3) For common briquetting, namely forming under normal temperature and moisture condition, after corruption to a certain extent, fiber comes to be soft, wet, cracking and partly degraded, at which time it is easy to be briquetted; then extrude water out from the partly degraded agricultural and forestry residues with a simple die, thus the briquetting fuel can be got.
Online since: August 2013
Authors: Chao Qian, Wen Yuan Gao, Chun Yuan Luo, Gui Shan Liu, Hong Shun Hao, Zhi Qiang Hu
Performance and Preparation of porous materials using FGD gypsum as aggregate
Chao Qian1, a, Wenyuan Gao1,2, b* , Chunyuan Luo1,2, Guishan Liu1,2 , Hongshun Hao1,2 and Zhiqiang Hu1,2
1Department of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China
2Liaoning Province Key Laboratory of Advanced Material and Material Modification, Dalian Polytechnic University,Dalian 116034, China
aqcrc2010@163.com,bdlgwy64@163.com
*Corresponding author.
The raw materials of this work are FGD gypsum, Sludge (SL), fly ash, diatomite and waste glass.
The chemical composition of raw materials as equivalent oxides is given in Table 1.
Silva: Journal of Materials Chemistry Vol.18 (2008), p. 4985-4993 [3] P.
Colombo: Key Eng.
The raw materials of this work are FGD gypsum, Sludge (SL), fly ash, diatomite and waste glass.
The chemical composition of raw materials as equivalent oxides is given in Table 1.
Silva: Journal of Materials Chemistry Vol.18 (2008), p. 4985-4993 [3] P.
Colombo: Key Eng.
Online since: September 2013
Authors: Jia Le Zhao, Zheng Zhen
PKPM and SAP2000 software on a layer of engineering aseismic structure performance analysis based on structure mechanics
Jia Le Zhao1,a,Zheng Zhen2,b
1,2 Department of Civil Engineering, Taiyuan University of Technology
#79,YingZe West Street, Taiyuan, 030024, China
azjl_3023456@163.com, bzhenzhengtyut@163.com,
Key Words: structural design; modeling principle; application program; vibration mode analysis
Abstract: The paper respectively introduced the principle of PKPM and SAP2000 application of modeling, At the same time, these two kinds of software are based on structure mechanics. practical engineering projections of these two applications, and engineering seismic performance analysis to compare their conclusions with some guiding significance for understanding the PKPM and SAP2000 application of, and provide a reference for personnel engaged in structural design.
Engineering seismic design is the key to ensure the quality of the engineering seismic fortification.
Therefore, SAP2000 is especially applicable to structure dynamic analysis in civil engineering.
The same as other large finite element program SAP2000 geometry physical model is consists of two aspects: The first aspect is, made up of "node - unit - structure" geometric model; The second aspect is made up of "materials - section – units " the physical model.
SAP2000 offers a variety of common material attributes of the building structure, materials such as concrete, steel, aluminum, etc., and it can also customize corresponding material properties, according to user s ' need; SAP2000 also provide many kinds of section form, such as frame cross section and surface cross section, etc.
Engineering seismic design is the key to ensure the quality of the engineering seismic fortification.
Therefore, SAP2000 is especially applicable to structure dynamic analysis in civil engineering.
The same as other large finite element program SAP2000 geometry physical model is consists of two aspects: The first aspect is, made up of "node - unit - structure" geometric model; The second aspect is made up of "materials - section – units " the physical model.
SAP2000 offers a variety of common material attributes of the building structure, materials such as concrete, steel, aluminum, etc., and it can also customize corresponding material properties, according to user s ' need; SAP2000 also provide many kinds of section form, such as frame cross section and surface cross section, etc.
Online since: November 2014
Authors: Deng Deng Zuo
Second, it is aimed at train applied and composite talents on high-level engineering technology and engineering management and puts more emphasis on engineering practice.
Intuition and inspiration is a psychological phenomenon which is based on logical thinking and closely connected with creativity and it plays a key role in creative activities.
Since Master of Engineering is applied engineering talent, engineering practice will be needed to accumulate practical experience for future service in medium-sized industrial and mining enterprises.
Institutions of Master of Engineering can build practice bases.
Establishing a Scientific Evaluation System of Master of Engineering.
Intuition and inspiration is a psychological phenomenon which is based on logical thinking and closely connected with creativity and it plays a key role in creative activities.
Since Master of Engineering is applied engineering talent, engineering practice will be needed to accumulate practical experience for future service in medium-sized industrial and mining enterprises.
Institutions of Master of Engineering can build practice bases.
Establishing a Scientific Evaluation System of Master of Engineering.
Online since: May 2006
Authors: Xing Dong Zhang, Y.M. Jiang, L. Zheng, J.M. Luo, T. Yuan
Histological Evaluation of Percutaneous Device with Different Materials
L Zheng, T Yuan, Y Jiang, JM Luo a, XD Zhang
Engineering Research Centre in Biomaterials, Sichuan University, Chengdu, Sichuan, China
ajmluo@scu.edu.cn
Keywords: Percutaneous Device Biological sealing HA Coated Titanium
Abstracts.
Biological sealing is a key factor for successful development of percutaneous device (PD).
In this study, a new type of PD was designed and fabricated from five different materials.
Materials and Methods Material, surface property, hole size and healing period during the two surgical stages, are factors that influence the biological activity of PD.
Reference [1] L Zheng: Key Engineering Materials, Vol. 288-289 (2005) p. 653
Biological sealing is a key factor for successful development of percutaneous device (PD).
In this study, a new type of PD was designed and fabricated from five different materials.
Materials and Methods Material, surface property, hole size and healing period during the two surgical stages, are factors that influence the biological activity of PD.
Reference [1] L Zheng: Key Engineering Materials, Vol. 288-289 (2005) p. 653
Online since: August 2011
Authors: Chun Hui Wang, Li Xin Du, Peng Hua
Welding Technique for New High Speed Railway Track Key Part
Hua Peng1 Chunhui Wang1 Lixin Du2
1 Civil Engineering School, Beijing Jiaotong University, 3 Shangyuan Village, Haidian District, Beijing, China 100044
2 Baotou-Shenmu Railway Track Maintenance Division, Tianjiao Road, Dongsheng District Erdos Inner Mongolia, China 017000
Keywords: “SQ” gas welding, welding, switch rail, frog
Abstract: With the development of continuous welded rail (CWR) in China high speed railway, the innovative study has been carried out for the welding technique of track key part.
Analysis of Technical Benefit It will save the following direct and indirect cost that repairing and reusing the seriously worn frog, switch rail and rail under the premise of ensuring acceptable quality: ①{TTP}9312 a considerable material procurement cost; ②{TTP}9313 labor cost on replacing the worn rail; ③{TTP}9314 loading & unloading cost, freight charges and machinery cost during loading & unloading and transporting the spare rail materials; ④{TTP}9315 reduced transport revenue since the spare materials is transported from the material storage center to the site, and the track trolley occupies the time during which the train should have been operated; ⑤{TTP}9316 reduced transport revenue because the train operation is delayed during replacement of worn rail with closed construction.
(3) Indirect cost: two workers are required for replacing one piece of rail material.
Meanwhile, it takes 25 minutes to replace a piece of rail material.
Beijing: Railway Engineering Journal, 2005,2(1):P47-50. ( In Chinese) [4] Yi Zhou, Study of High Speed Railway CWR Welding Technique [J], Shanghai: Shanghai Railway Technology, 2009,3:P15-17. ( In Chinese) [5] Qinghua Lu, Rail Welding Technique and Quality Control [J].
Analysis of Technical Benefit It will save the following direct and indirect cost that repairing and reusing the seriously worn frog, switch rail and rail under the premise of ensuring acceptable quality: ①{TTP}9312 a considerable material procurement cost; ②{TTP}9313 labor cost on replacing the worn rail; ③{TTP}9314 loading & unloading cost, freight charges and machinery cost during loading & unloading and transporting the spare rail materials; ④{TTP}9315 reduced transport revenue since the spare materials is transported from the material storage center to the site, and the track trolley occupies the time during which the train should have been operated; ⑤{TTP}9316 reduced transport revenue because the train operation is delayed during replacement of worn rail with closed construction.
(3) Indirect cost: two workers are required for replacing one piece of rail material.
Meanwhile, it takes 25 minutes to replace a piece of rail material.
Beijing: Railway Engineering Journal, 2005,2(1):P47-50. ( In Chinese) [4] Yi Zhou, Study of High Speed Railway CWR Welding Technique [J], Shanghai: Shanghai Railway Technology, 2009,3:P15-17. ( In Chinese) [5] Qinghua Lu, Rail Welding Technique and Quality Control [J].
Online since: September 2013
Authors: Yi Zhou, Jian Yu Zhao, Xiao Yang Cai
Selection of Engineering Management University Internship Projects Based on Fuzzy Analytic Hierarchy Process
Jian-yu Zhao 1, a, Yi Zhou 2,b, Xiao-yang Cai 1,c
1School of Management, Shandong University, Jinan, China, 250002
2Dept.
Petroleum Supply Engineering, Logistical Engineering University, Chongqing, China, 401311 aemail: bluegrass1991@gmail.com, bemail: zhouyiasd@foxmail.com, cemail: 854576351@qq.com Keywords: Engineering management, Fuzzy Analytic Hierarchy Process, Analytic Hierarchy Process, Fuzzy Comprehensive Evaluation, Internship, Decision optimization Abstract.
It is applied to better selection of the internship for whom majoring in engineering management.
[3] Yang Lun-biao, Gao Yin-yi: The theory and application of Fuzzy Mathematics (Huanan Engineering University Press, Guangzhou, China 2006) (in Chinese)
[4] Xiaogang Zhao, Yi Zhou, Jie Zheng, et al: Advanced Materials Research Vols. 610-613 (2013), p.1930.
Petroleum Supply Engineering, Logistical Engineering University, Chongqing, China, 401311 aemail: bluegrass1991@gmail.com, bemail: zhouyiasd@foxmail.com, cemail: 854576351@qq.com Keywords: Engineering management, Fuzzy Analytic Hierarchy Process, Analytic Hierarchy Process, Fuzzy Comprehensive Evaluation, Internship, Decision optimization Abstract.
It is applied to better selection of the internship for whom majoring in engineering management.
[3] Yang Lun-biao, Gao Yin-yi: The theory and application of Fuzzy Mathematics (Huanan Engineering University Press, Guangzhou, China 2006) (in Chinese)
[4] Xiaogang Zhao, Yi Zhou, Jie Zheng, et al: Advanced Materials Research Vols. 610-613 (2013), p.1930.
Online since: July 2013
Authors: Dong Hu Zhang, Tie Ning Wang, Xing Xing Niu, Shuang Shuang Yu
Design on the System of Equipment Material Support Internet of Things
Zhang Donghu1, a Wang Tiening1, b Niu Xingxing1, c
Yu Shuangshuang1, d
1Academy of Armored Forces Engineering, Beijing, China
alannimi@sina.com, byuamanda@126.com, c490794736@qq.com, d574137379@qq.com
Key words: Internet of Things (IOT); equipment material support; support capability
Abstract: The Internet of Things (IOT) plays an important role in improving the equipment support capability.
Introduction The Internet of Things (IOT) has been widespread concerned for that it is the key scientific research project to tackle key problems and it is the information technology tide following the Internet and new economic engine of the world in next period.
(1) Perception layer The function of the perception layer is to realize the intelligent perception and identification, the information acquisition and processing, the automatic control on the equipment materials.
Using GPS, quality testing devices and wireless network communication we can obtain the location and quality information of the materials in the supply process.
Strategic armored equipment material support engineering [M].
Introduction The Internet of Things (IOT) has been widespread concerned for that it is the key scientific research project to tackle key problems and it is the information technology tide following the Internet and new economic engine of the world in next period.
(1) Perception layer The function of the perception layer is to realize the intelligent perception and identification, the information acquisition and processing, the automatic control on the equipment materials.
Using GPS, quality testing devices and wireless network communication we can obtain the location and quality information of the materials in the supply process.
Strategic armored equipment material support engineering [M].