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Numerical analysis of underground engineering on self-developed finite element method Dehai Yu1, a, Annan Jiang1,b and Junxiang Wang1,c 1 Institute of road and bridge engineering, Dalian Maritime University, Dalian, 116026, China aydhhdy1977@163.com, bjiang annan@163.com, cJunxiang_W@163.com Keywords: self-developed finite element, underground engineering, quantitative analysis Abstract.
The self-developed finite element method has many advantages and good prospects to solve problems of underground engineering.
Finite element method can easily deal with nonlinear problems, and simulate the complex geotechnical process in engineering construction, so it is widely used in underground engineering.
The material parameters are shown in Table 1.
The Principles and Applications Back Analysis of Geotechnical Engineering.

Telecontrol Engineering of Three-dimensional Measurements from Two-dimensional Digital Photogrammetry for Scene Reconstruction Daiqin Tao1, a, Zhiyong Yin1,b,* , Shengxiong Liu1,c , Lijun Wang1,b 1Chongqing Key Laboratory of Vehicle/Biological Crash Security, Department 4, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing 400042, China ataodaiqin@qq.com, bzyyin@cta.cq.cn, clsndxfj@sina.com *Corresponding author: Prof.
Key words: Image engineering, Scene reconstruction, Remote modeling, Computer simulation, 3D measurements, 2D Image processing, Digital photogrammetry Abstract.
It can be positively applied to the remote scene reconstruction as well as other engineering vistas.
Introduction The scene reconstruction is the difficulty and key [1] aspect both in traffic accidents analysis and other scene investigation.
Fig. 1 The technical project flow chart Materials and Methods Photogrammetry triangulation.

Quality Control of Information Engineering Surveillance Based on Baum-Welch Algorithm Hongzhi Liu a, Li Gao b College of Computer and Information Engineering, Beijing Technology and Business University, 100048, Beijing, China aLeohz@sohu.com, bgaoli_168@yahoo.com.cn Key words: Information Engineering Surveillance; Quality Control; Hidden Markov Model (HMM); Baum-Welch Algorithm Abstract.
Facilities and materials consist of four elements (device type and acceptance check, device installation and performance control, device utilization & operation and materials quality).
Let represent a set of discrete-valued variables for facilities and materials.
Computer Engineering and Applications, 2008, 44 (7) : 136- 138.
Computer Engineering and Applications, 2003, Vol.24.

Application of Metal Powder Metallurgy Technology in Prepartion of Friction Materials of the Railway Vehicles SHANG Feng1,a ZHOU Hai-xia2,b QIAO Bin1,c Li Hua-qiang1,d and HE Yi-qiang1,e 1School of Mechanical Engineering, Huaihai Institute of Technology, Lianyungang Jiangsu 222005, China 2College of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang Jiangsu 212003, China ashf184518@163.com, b waihou295@163.com, cQiao6636@126.com, dlhq6729@163.com, eant210@126.com Key words：Powder metallurgy; Railway transport; Friction materials Abstract：With the speed up of the train, higher performance demands are put forward to the materials which have friction function.
(in Chinese) [2] H.X.Gao, J.X.Liu, R.M.Zhu: Journal of Materials Science and Engineering.
(in Chinese) [4] Z.H.Wang: Materials For Mechanical Engineering. (10)(2001), p. 1-4.
(in Chinese) [8] G.Q.Wang, J.C.Chen, J.L.Sun: Materials Review.
[10] Skai S , Suzuki H G, Mihara K: Materials Transactions.

Key Engineering Materials Vol. 6

In the light of the problem of low efficiency in reverse engineering model reconstruction, taking Auto part as object of study, analysis the key technology in this paper.
Reverse engineering (RE) is defined as the process of obtaining a geometric CAD model from point cloud acquired by scanning/digitizing existing parts/products without any technical details, such as drawings, bills-of-material.
Therefore, efficient, high-precision data acquisition is one of basic and key technologies to carry out reverse engineering, and it is most fundamental and indispensable step for it.
Conclusions This paper reconstructs CAD model of Auto part based on reverse engineering, analysis the key technology in Auto part reverse engineering model reconstruction, put forward one model reconstruction method to improve Auto part design efficiency.
Reverse engineering: an industrial perspective.

Experimental Research on Mechanical Properties of Coal Paste Filling Material Caizhi Zhao1, a, Huaqiang Zhou2,b 1Faculty of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221008,China 2State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiangsu 221008,China azhaocaizhi@163.com, bhqiangzhou@126.com Keywords: paste filling, cementstious material, strength, strain hardening.
The paste filling slurry, which is mixed with extremely small amount(about 50 kg/m3) of the material, can be solidified quickly and reach the strength requirement of none -village-relocation coal extraction engineering.
It was no precedent in China, and the key to the success is paste filling material.
The material meets the requirement of non-village-relocation surface subsidence control engineering and financially acceptable.
However paste filling materials of different compressive strength show different degree of plastic enhancement.

Computer-Aided Engineering of the Process of Injection Molding Articles Made of Composite Materials I.N.
Injection molding simulation of plastic impeller and process parameters optimization, Journal of Drainage and Irrigation Machinery Engineering. 31 (9) (2013) 747-751
Numerical and experimental study on the injection molding of a thin-wall complex part, ASME 2008 International Manufacturing Science and Engineering Conference. 1(2008) 85-93
[6] Grechnikov F., Khaimovich, A., The study of plastic deformation at high strain rates in upset forging of cylinders, Key Engineering Materials. 684 (2016) 74-79
[7] Min B.H., A study on quality monitoring of injection-molded parts, Journal of Materials Processing Technology. 136(2003) 1–6

Finally, an example of Reverse Engineering for blades of axial flow compressors based on parameterization was given.
As a material 3D reconstruction method, Reverse Engineering has become the main means to solve the problem.
Fig.4 The connection fitting process of blades Example An example of Reserve Engineering of an axial compressor blade is given to illustrate the Reserve Engineering process on parameterization.
(In Chinese) [2] Lifa Wang: Research on Key Technology of Reverse Engineering for Kaplan Hydro Turbine Blade and Its Applications.
(In Chinese) [3] Jianguo Jin, Minghua Zhou, Xuejun Wu: Computer Engineering and Applications. vol.7(2003). p.16-18.

Research on Safety Technology for Initiative Anti-collision of Bridge Zhengbao LEI 1, a , Zhu CHEN 2, b, Muxi LEI 3, c, Run AI 1, d 1Key Laboratory for Highway Engineering of Ministry of Education, Changsha University of Science and Technology, Changsha 410004, P.R.China 2Engineering Research Center of the Road Disaster Prevent & Mitigation and Transportation Safety, Ministry of Education, Changsha 410004, P.R.China 3School of Civil Engineering and Architecture, Changsha University of Science and Technology, Hunan Changsha 410004 P.R.China.
a909267364@qq.com, bchenzhu89@163.com, cleimuxi@qq.com, d124-air@163.com Key words: bridge; key factors; safety technology for initiative anti-collision Abstract.
Therefore, to extend the time of collision avoidance will be a key factor.
Application of Anti-collision System in Bridge Engineering.
Science and Technology of Overseas Building Materials( 2007)