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Introduction Matrix material of machine parts almost contains the material discontinuous zone (MDZ) which caused by material defect, contour structure, welding zone and components connection etc.
Result and Discuss The matrix material is GCr15, which Poisson’s ratioand Young modulus.The value of the discontinuous zone material Young modulusis considered between 10GPa which corresponds to soft material zone such as material defect, contour structure etc, and 250GPa corresponds to rigid material zone such as welding zone, components connection etc.
References [1] Zdendk Majer: Key Engineering Materials, Vols. 525-526(2013), p.173 [2] C.F.
Ricoeur: Key Engineering Materials, Vols.525-526(2013), p.181 [5] S.J.
:Engineering Fracture Mechanics, 1974,6:p493

Risk assessment of city village reconstruction demolition engineering in Urban sustainable development Liu Xiaojuna, Lan Dexing b XI’AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY, Xi’an , 710055, China axjun_liu@163.com, btianfei.lan@163.com Keywords: Urban sustainable development; City village reconstruction; risk assessment of demolition and response; fuzzy comprehensive evaluation; system-level analysis Abstract.
This paper take Xi’an city village reconstruction demolition engineering projects as the main object of study, use the method of fuzzy comprehensive evaluation combined with system-level analysis in demolition of city village reconstruction project for quantitative risk assessment, identify the key risk factors, and measures proposed for the development enterprises to reduce project risks and promote the sustainable development of the city.
Therefore, evaluate the risk in city village reconstruction demolition engineering project and take effective measures to deal with the risk is necessary to the entire cycle risk control.
Conclusions City village reconstruction demolition engineering project risk response measures
Engineering economics [M].

Research to Safety Evaluation Expert System of Hydraulic Engineering Metal Structures Yang guang-ming College of Energy and Electrical Engineering, Hohai University, Nanjing 210098 gmyang@hhu.edu.cn Keywords: hydraulic engineering; safety evaluation;expert system; hydraulic metal structure; knowledge engineering.
Introduction The safe operation of metal structures of hydraulic engineering are important link of the hydro-junction safe operation.
This system is based on artificial intelligence and database, is safe monitor and evaluation system which serves for safe operation of hydraulic engineering.
The establishment and realization of this system will be inevitable trend development of safe monitoring of hydraulic engineering.
This system has broad prospect of application, will be playing more and more important role in safety domain of hydraulic engineering.

Analysis on the Innovation and Application of Materials in Green Design Liu Chang 1, a, Zhao Fan 1, b 1Tianjin University of commerce, Tianjin 300134, China acheese_liu@163.com, azf0079976@126.com Key words: green design; green materials; dematerialization Abstract: With the rapid pace of urbanization, more and more people begin to pay attention to environment protection.
In 1867, at Expo in Paris, the gardener Monnières brought boats and pots made of reinforced concrete which now still plays an important role in the world’s civil engineering.
Therefore, the key is efficient conversion of energy.
Traditional green materials.
The common green materials include wood, bamboo, ceramics, nano and inorganic polymer geo-polymer materials.

Biofunctional Materials for Nerve Regeneration Yu Mi Kim 1,2,a, Jin Gao 1,b, Blaine Zern 1,c, and Yadong Wang1,d* 1 Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA. 2 Department of Biomedical Engineering, Kyungpook National University, Daegu, Korea.
Such biofunctional materials can potentially provide a new strategy for nerve regeneration.
The cells showed typical neuron morphology on PCD (Fig. 2) as well as on the control materials.
The level of differentiation increased with time on all materials.
This suggests that incorporating neurotransmitters into biodegradable polymers may serve as a useful platform for creating biofunctional materials for the engineering of nervous tissue.

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.

Nano-sized and Nanocrystalline Calcium Orhophosphates in Biomedical Engineering Sergey V.
Porous 3D nanocomposites of HA and collagen/polymer mimic natural bone in composition and microstructure and can be employed as a matrix for the tissue engineering of bone [275].
Webster, in: Nanostructured Materials, edited by J.Y.
Dorozhkin: Materials, Vol. 2, (2009), p. 399
Aspects fondamentaux. / Calcium phosphate materials.

Research on the Feasibility of Shape-stabilized Phase-change Materials at Lower Temperature Used in the Phase Change Wall Quanying Yan a, Ran Huob and Lili Jinc Beijing Municipality Key Lab of Heating, Gas Supply, Ventilating and Air Conditioning Engineering, Beijing University of Civil Engineering and Architecture, 100044,China a yanquanying@bucea.edu.cn, b huoran5202006@163.com, cjinlili19880626@163.com Keywords: paraffin; high density polyethylene; shape-stabilized phase-change material; phase-change wall; energy saving Abstract.
The results may provide the basis for the application in the practical engineering in the future.
Experimental method Experimental equipments and materials.
Proceedings of the 28th intersociety energy conversion engineering conference.
Solar Energy Materials and Solar Cells, 2000,64(1):37~44.

Sandwich Panels Made of Perforated Metal Materials Viktors Mironovs1,a *, Mihails Lisicins1,b and Irina Boiko2,c 1Riga Technical University, Scientific Laboratory of Powder Materials, Kipsalas 6B, LV-1048, Riga, Latvia 2Riga Technical University, Institute of Mechanics and Mechanical Engineering, Department of Mechanical Engineering and Mechatronics, Kipsalas 6B, LV-1048, Riga, Latvia aviktors.mironovs@rtu.lv, bmihails.lisicins@rtu.lv, cirina.boiko@rtu.lv Keywords: sandwich panels; perforated metal material; load-bearing capacity.
The aim of this paper is to investigate the possibility of using of perforated metallic materials for producing sandwich panels for the different application in the civil engineering.
Introduction Perforated metal materials (PMM) have found their application in the civil engineering, architecture, and mechanical engineering [1-3] due to the successful combination of low mass and sufficiently high strength.
Sandwich panels have made similar progress in the production and application in the civil engineering.
Last years the use of environmental materials such as peat chips and wood materials become urgent.

The objective functions of the mathematic model are energy consumption, materials consumption, environment impact.
China Mechanical Engineering. 1997; 8 (4): 78-80
Chinese Journal of Mechanical Engineering. 1999.10; 35 (5): 11-15
China Mechanical Engineering. 2000.9; 11 (9): 961-964
Reactive Scheduling", Industrial Engineering Chemistry Research, 45, 8253-8269 (2006)