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Online since: July 2014
Authors: Qian Su, Hao Bai, Yu He, Chuan Bin Zhou, Wen Hui Zhao
It’s necessary to study the engineering behavior of NEPBS in complex geology field.
It’s the first application of NEPBS crossing over-shallow-embedded, and the engineering behaviors of NEPBS in complex geology field are not known exactly, thus, it’s necessary to study the engineering behavior of NEPBS in SHPDR.
In-situ Test Condition Engineering Overview.
According to geological prospecting materials, in the range of 60 m below the ground, the bearing capacity of soil is very low.
References [1] Qian Su, Hao Bai, Long-biao Liang et al.: Applied Mechanics and Materials Vol. 71-78(2011), p.388-392, in Chinese
It’s the first application of NEPBS crossing over-shallow-embedded, and the engineering behaviors of NEPBS in complex geology field are not known exactly, thus, it’s necessary to study the engineering behavior of NEPBS in SHPDR.
In-situ Test Condition Engineering Overview.
According to geological prospecting materials, in the range of 60 m below the ground, the bearing capacity of soil is very low.
References [1] Qian Su, Hao Bai, Long-biao Liang et al.: Applied Mechanics and Materials Vol. 71-78(2011), p.388-392, in Chinese
Online since: November 2007
Authors: Xi Peng Xu, Hui Huang, Chong Fa Huang
An experimental study was carried out to investigate the force in drilling of engineering
ceramic with a brazed diamond tool.
When these hard and brittle materials are used for mechanical structural parts, the need to cut or drill them is inevitable.
Compared with many researches in the grinding field, the engineering ceramic drilling was littler discussed by researchers [1-3].
Among these, the grain machining has been widely used because of fewer restrictions in the materials and cost efficiency in facilities.
So brazed diamond tools are taken as the best one to machine hard and brittle materials.
When these hard and brittle materials are used for mechanical structural parts, the need to cut or drill them is inevitable.
Compared with many researches in the grinding field, the engineering ceramic drilling was littler discussed by researchers [1-3].
Among these, the grain machining has been widely used because of fewer restrictions in the materials and cost efficiency in facilities.
So brazed diamond tools are taken as the best one to machine hard and brittle materials.
Online since: January 2012
Authors: Xian Gen Lin, Yong Xu
Now the idea of green and less energy is fashionable, then optimization design is very significant in practical engineering.
According to engineering statistics the optimization design can reduce 15%~30% of material quantity.
Now designers face one important question, it was that the balance between design formula and material quantity.
According to statistics of software, the optimization design can reduce 15%~30% of material quantity.
The compare between penalty function optimization design and traditional design The engineering design of portal frame were great, the parameters included span, eave height, column space and so on, so the compare parameters were variable also.
According to engineering statistics the optimization design can reduce 15%~30% of material quantity.
Now designers face one important question, it was that the balance between design formula and material quantity.
According to statistics of software, the optimization design can reduce 15%~30% of material quantity.
The compare between penalty function optimization design and traditional design The engineering design of portal frame were great, the parameters included span, eave height, column space and so on, so the compare parameters were variable also.
Online since: March 2010
Authors: Li Yun Li, Fu Quan Cao, Jie Zhang, An Ping Zhao, Lu Lu Tian
Introduction
Lots of researches have been done on mixed mode crack fracture in rock material [1-5], to meet the
needs of rock engineering study.
However there is bi-materials crack fracture problem in civil engineering.
(a) Sketch photo of bi-materials specimen.
Sic., Vol. 40 (2003), p.355 [2] Liyun Li, Fengguang Xu, Heping Xie and Ning Wei: Key Engineering Materials, Vol. 324 (2006), p.1217 [3] Liyun Li, Zhenzi Li, Zonqi Sun: Chinese Journal of Rock Mechanics and Engineering, Vol.13 (1994), p.134 [4] R.H.C.Wong, M.L.Huang, M.R.Jiao and C.A.Tang: Key Engineering Materials, Vol. 261 (2004), p. 214 [5] T.
Sic., Vol. 41 (2004), p. 351 [6] Shuilin Wang, Xiurun Ge, Guang Zhang: Chinese Journal of Rock Mechanics and Engineering, Vol. 18(1999), p.671
However there is bi-materials crack fracture problem in civil engineering.
(a) Sketch photo of bi-materials specimen.
Sic., Vol. 40 (2003), p.355 [2] Liyun Li, Fengguang Xu, Heping Xie and Ning Wei: Key Engineering Materials, Vol. 324 (2006), p.1217 [3] Liyun Li, Zhenzi Li, Zonqi Sun: Chinese Journal of Rock Mechanics and Engineering, Vol.13 (1994), p.134 [4] R.H.C.Wong, M.L.Huang, M.R.Jiao and C.A.Tang: Key Engineering Materials, Vol. 261 (2004), p. 214 [5] T.
Sic., Vol. 41 (2004), p. 351 [6] Shuilin Wang, Xiurun Ge, Guang Zhang: Chinese Journal of Rock Mechanics and Engineering, Vol. 18(1999), p.671
Online since: May 2012
Authors: Mei Juan Rao, Li Hua Li, Shu Hua Liu, Guo Shuai Xie, Yu Liu
Effect of Glass Powder on Strength and Microstructure of Ultra High Performance Cement-based Materials
Shuhua Liu 1, 2, a, Guoshuai Xie 1, b, Lihua Li 3, c, Yu Liu4, d, Meijuan Rao5, e
1 State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
2 State Key Laboratory of Building Safety and Built Environment, Beijng, 100013, China
3 School of Civil Engineering and Architecture, Hubei University of Technology, Wuhan 430068, China
4 Changjiang Institute of Survey, Planning, Design and Research, wuhan, 430010, China
5 Department of Civil and Earth Resources Engineering, Kyoto University, Kyoto, 615-8540, Japan
ashliu@whu.edu.cn, bguoshuaixie@163.com, clilihua466@163.com, dliuyu7980@sina.com, eraomeijuanding@163.com
Keywords: glass powder; ultra high performance cement-based materials; strength; microstructure.
The effect of glass powder on strength and microstructure of ultra high performance cement-based materials was investigated in this paper, which aimed to provide an additional option for glass recycling and potentially reduce the high costs of this kind of materials.
As one of relatively new kinds of building materials, ultra high performance cement-based materials and their derivatives have been widely used in many areas including industrial and civil buildings, nuclear waste storage facilities, railway construction and so on nowadays.
These new materials are developed through micro-structural engineering and offer a combination of materials and performance characteristics.
ACI Materials Journal, 1963(60):1235–1236 [5] Yixin Shao,Thibaut Lefort,Shylesh Moras,Damian Rodriguez.
The effect of glass powder on strength and microstructure of ultra high performance cement-based materials was investigated in this paper, which aimed to provide an additional option for glass recycling and potentially reduce the high costs of this kind of materials.
As one of relatively new kinds of building materials, ultra high performance cement-based materials and their derivatives have been widely used in many areas including industrial and civil buildings, nuclear waste storage facilities, railway construction and so on nowadays.
These new materials are developed through micro-structural engineering and offer a combination of materials and performance characteristics.
ACI Materials Journal, 1963(60):1235–1236 [5] Yixin Shao,Thibaut Lefort,Shylesh Moras,Damian Rodriguez.
Investigations on Interface Reactions and Wettability between Melt Superalloys and Ceramic Materials
Online since: August 2016
Authors: Bao De Sun, Fei Li, Xiao Yan Chen, Jun Wang
Sun4, d
1-4The State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China
axychen10b@sjtu.edu.cn, blifei74@sjtu.edu.cn, cjunwang@sjtu.edu.cn, dbdsun@sjtu.edu.cn
* Corresponding author
Keywords: Interface reactions, wettability, superalloys, ceramic materials
Abstract Interface reactions and wettability between melt superalloys and ceramic mould materials were investigated by using a sessile drop experiment.
However, alloys with C content higher than 0.16wt.% reacted with the ceramic materials.
The selection of ceramic mould materials as well as the interactions between melt superalloy and the ceramic materials are both key factors that affect the surface quality of the superalloy components.
Kättlitz, Investment casting technology for production of TiAl low perssure turbine blades-process engineering and parameter analysis, Intermetallics. 19 (2011) 757-761 [3] S.
Guo, Materials Science and Engineering for Superalloys, first ed., Science Press, Beijing, 2008 [5] S.
However, alloys with C content higher than 0.16wt.% reacted with the ceramic materials.
The selection of ceramic mould materials as well as the interactions between melt superalloy and the ceramic materials are both key factors that affect the surface quality of the superalloy components.
Kättlitz, Investment casting technology for production of TiAl low perssure turbine blades-process engineering and parameter analysis, Intermetallics. 19 (2011) 757-761 [3] S.
Guo, Materials Science and Engineering for Superalloys, first ed., Science Press, Beijing, 2008 [5] S.
Online since: March 2016
Authors: Deng Zun Yao, Jiang Qiao Wu, Xin Ran Yuan, Tian Qi Wang, Long Zhang
Significant changes include the development of higher strength pipeline materials and the development of high productivity mechanized welding equipment.
The fracture mechanics based procedures such as those described in R6 [3] or BS 7910 [4], were typically called as Engineering Critical Assessment (ECA).
In this paper, the approaches of Engineering Critical Assessment in API 1104 and BS 7910 have been introduced.
Option 2 allows for the full utilization of the toughness of the materials thus providing a more accurate criterion but requires more calculation.
Three options all use similar methods, but different materials properties are used, which lead to the different level of conservatism.
The fracture mechanics based procedures such as those described in R6 [3] or BS 7910 [4], were typically called as Engineering Critical Assessment (ECA).
In this paper, the approaches of Engineering Critical Assessment in API 1104 and BS 7910 have been introduced.
Option 2 allows for the full utilization of the toughness of the materials thus providing a more accurate criterion but requires more calculation.
Three options all use similar methods, but different materials properties are used, which lead to the different level of conservatism.
Online since: May 2014
Authors: Feng Xie, Qian Cai, Zhao Rui Zhang, Ning Zhou
Therefore, some related subjects were studied in this paper by experiments, theoretical calculation and engineering practice.
Therefore, some related issues were studied in this paper by experiments, theoretical calculation and engineering practice.
There are different ways to achieve this purpose, such as enhancing the quality and strength of anchor, selecting supporting anchor for different wall materials, using glass fiber mesh between anchor and rock wool board, etc.
Engineering practice Energy efficiency in the existing building 317# of Huizhongli community in Beijing is the first pilot project according to local standard, Design Standard for Energy Efficiency of Residential Buildings (DB11/891-2012).
Some methods would provide support for this purpose, such as enhanced quality of anchor, suitable anchor for substrate materials, glass fiber mesh between anchor and rock wool board.
Therefore, some related issues were studied in this paper by experiments, theoretical calculation and engineering practice.
There are different ways to achieve this purpose, such as enhancing the quality and strength of anchor, selecting supporting anchor for different wall materials, using glass fiber mesh between anchor and rock wool board, etc.
Engineering practice Energy efficiency in the existing building 317# of Huizhongli community in Beijing is the first pilot project according to local standard, Design Standard for Energy Efficiency of Residential Buildings (DB11/891-2012).
Some methods would provide support for this purpose, such as enhanced quality of anchor, suitable anchor for substrate materials, glass fiber mesh between anchor and rock wool board.
Online since: October 2013
Authors: Hai Jiang Dong, Chun Hua Zhao, Xian You Zhong, Wei Wang, Shi Qing Wan
Key Technology in Wind Turbine Transmission System Condition Monitoring: A Review
Haijiang Dong1,a, Chunhua Zhao*1,2,b, Shiqing Wan1,c, Xianyou Zhong1,d,
Wei Wang1,e
1College of Mechanical & Material Engineering, China Three Gorges University, Yichang 443002, China
2Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance, China Three Gorges University, Yichang 443002, China
adhaijiang2008@163.com, bzhaochunhua@ctgu.edu.cn, cwansq1989@126.com, dzhxy@ctgu.edu.cn, e276999339@qq.com
Keywords: Wind turbine; Transmission system; Condition monitoring; Key technology
Abstract.
Journal of Basic Science and Engineering 2011; 19(s): 210-218
Journal of Engineering for Gas Turbines and Power 2012; 134
Systems Engineering Procedia 2012; (4): 189–195
Journal of Beijing University of Civil Engineering and Architecture 2012; 28(3): 44-47
Journal of Basic Science and Engineering 2011; 19(s): 210-218
Journal of Engineering for Gas Turbines and Power 2012; 134
Systems Engineering Procedia 2012; (4): 189–195
Journal of Beijing University of Civil Engineering and Architecture 2012; 28(3): 44-47