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(3) It only based on dimension driving, so it has great limitations in engineering applications.
So the engineering constraints such as weight, load, power, reliability and other key design parameters are establish contacts directly with the geometric equations as restrictive conditions to drive model change.
As the three-dimensional model created by SolidWorks and the generated drawings are linked, so using engineering constraints as the initial conditions also drive the update of all engineering drawings. 6.
[2] Chuanshun Zhang, Rong Mo, Shengyou Shi et.al: China Mechanical Engineering, Vol.17(2006), p. 1916-1920, in Chinese
[4] Moli Sun, Zhiyong Chang and Rong Mo: China Mechanical Engineering, Vol.19(2008), p. 200-203, in Chinese

So the material of water-based key components is required to be modified to improve its wear properties.
Table 1.1 shows properties of common ceramic materials.
The key point to reduce wear even no wear is to make sure the high hardness and the excellent compression performance of the ceramic materials.
Journal of Hunan Institute of Engineering.3(2004),p, 47-49 [5] Xiaolei Wang,Wenfei Han.
In chinese.China Mechanical Engineering,.Vol, 19(2008),p,457-460 [6] Siyuan Yu.Engineering Ceramic Materials Processing Technology and Its Application[M].Bei Jing:China Machine Press(2008) [7] Donghu Xiang.Research on Tribological Properties of Engineering Plastics and Ceramic Coating Under the Water Lubrication[D].Wu Han:Huazhong University of Science and Technology (2005) [8] Jiajun Liu:Material Wear Principle and Wear Resistance[M].Bei Jing:Tsinghua University press (1993)

Meso-Damage Theory and Its Application in Research of Materials Science Zhiguo Peng, Hang Li, Hailang Liu, Haihua Yu (Institute of Electrical and Mechanical Engineering, Guilin University of Electronic Technology, Guilin 541004, China) email: pengzg@guet.edu.cn, email: 843174150@qq.com, email: liuhl@guet.edu.cn, email: 413810615@qq.com Key words: Meso-damage, Metal material, Composite material, Rock material Abstract.
is internal variable of the materials.
Du: Ordnance Material Science and Engineering, Vol. 33 (2010) No.1, p.105 [10] D.Y.
Zhang: Journal of Rock Mechanics and Engineering, Vol. 22 (2003) No.2, p.182 [11] G.S.
Li: Science Technology and Engineering, Vol. 4 (2004) No.1

Ferroelectric domain engineering in stoichiometric LiNbO3 by scanning probe microscopy Huifeng Bo1, a, Zhanxin Zhang1, b, Hongkui Hu1, c and Ruzheng Wang1, d 1 School of Science, Hebei United University, Tangshan 063009, People’s Republic of China abohuifeng@163.com, bzhangzhx@heuu.edu.cn, chuhk@heuu.edu.cn, druzheng@heuu.edu.cn Keywords: lithium niobate; domain engineering; scanning probe microscopy.
Scanning force microscopy is used to investigate nanoscale ferroelectric domain engineering in near-stoichiometric lithium niobate (SLN) single crystals.
In this letter we report on the fabrication and accurate characterization of two-dimensional dot domain structures with feature size down to 200 nm by SPM domain engineering technique. 2.
Summary We have investigated the nanoscale ferroelectric domain engineering of SLN single crystals using SPM.
Our work provides potential applications in employing LN crystals for materials science as a viable route to realize the precise domain-engineered structures, which may pave a new way for efficiently realize backward processes such as backward second-harmonic generation and backward optical parametric oscillator.

Integration of CAD/PDM and ERP Systems in Practice MLECZKO Janusz 1,a* 1University of Bielsko-Biała, Department of Industrial Engineering, ul.
What the manufacturing requires from the design phase are a bill of materials, routes of manufacturing processes, and manufacturing documentation.
The key condition for effective concurrent engineering and cross-enterprise engineering is integrated computer environment for design and manufacturing: a common platform for computer-aided systems for product development [2].
Connector functionalities: - mapping CAD objects with materials identifiers (for purchased parts, materials, elements), - viewing attributes of materials such as name, price, unit of measure, etc., - preparation of the bill of materials (BOM) for the integrator, - preparation of links to CAD drawings for the integrator, - access to the data warehouse and MRP, - on-line access to costs.
Kul’ga, Integration of CAD/CAM/PDM/MES and ERP systems, Russian Engineering Research, 28, 2  (2008) 169-172

As that of coordination and ISO 15288, discipline system engineering and software engineering processes, methods have a lot in common, and concerns.
Need to use systems engineering software design and development, and need to incorporate software engineering concepts into system engineering, suggests that the decision of the two disciplines the close relationship between is appropriate.
He pointed out that, with materials and nanotechnology, and works other advantages, "near-infinite limited, come physically" solution space software may be pointed in application system.
[2] Barry Boehm, "A View of 20th and 21st Century Software Engineering," Proceedings of the 28th International Conference on Software Engineering, International Conference on Software Engineering, 2006, pp. 12-29
"Guide to the Software Engineering Body of Knowledge (SWEBOK)," IEEE Computer Society, 2004 [4] INCOSE, Guide to Systems Engineering Body of Knowledge, International Council on Systems Engineering, 2004

Chen Department of Material Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China a mengqingsen@263.net, bgiftzn@163.com Keywords: Field-activated; Combustion synthesis; In-situ; FGMs; TiC; TiAl Abstract.
In this paper, the synthesis of four-layered functionally graded materials (FGMs) samples of (TiC)pNi/TiAl with titanium substrate by field-activated and pressure-assisted synthesis process (FAPAS) was investigated.
Experimental Materials The starting materials used in this research include powders of Al (99.5% purity, 45 µm in average size), Ti (99.99% purity, 10µm in average size), graphite (99.9% purity, 60 nm in average size) and Ni (99.9% purity, 45 µm in average size).
Munir: Key.
Huntington, in: Diffusion Processes in Advanced Technological Materials, edtied by A.

The landslide has been in good condition since this controlling engineering was completed several years ago.
However, due to the complexity of geotechnical engineering, it is still necessary to carry out further research on these problems.
Similar materials According to certain similarity ratios and physical and mechanical parameters of rock-layers, the similar materials are made through appropriate mixture ratio of barite powder, iron powder, sand, and water, and the physical and mechanical parameters of similar materials for relevant rock-layers can be obtained.
Comparing theoretical value with test one, we can find that the selected similar materials basically meet the requirements of similar design intent, which provides assurance for the reliability of final research results.
Conclusions With stable condition and desired repeatability, 6 types of similar materials have approximate theoretical and actual values for key physic-mechanical parameters, which is beneficial to the simulation of key lithologic characters and geological structure of sliding mass under consideration.

Engineering Machinery.
Product Form Abstract: Engineering design of mechanical products is the weak links of products in the international market.
When analyzing a problem, the theory of TRIZ adopt a system method with high general moderation, the main tool is the theory of product evolutionary, analysis tools, conflict resolution principle, contradictory matrix (39 engineering parameters and 40 invention principle), material-field analysis standard solution, the 76 standard solution and ARIZ (invention problem and solving algorithm) etc.
Small excavators used for municipal maintenance engineering.
This is the largest theme in the design of engineering machinery’s model.

Fabrication and Properties of Porous Scaffolds of PLA-PEG Biocomposite for Bone Tissue Engineering Ning Wang1, 2, a, Yongju Zang2, Guizhi Ren2 and Qilin Wu1, 2, b* 1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China 2College of Materials Science and Engineering, Donghua University, Shanghai 201620, China awn67613049@163.com, bwql@dhu.edu.cn Keywords: Porosity scaffold, PLA-PEG composite, Bone tissue engineering.
There are three traditional methods such as autograft, allograft, and using nondegradable materials.
Thus tissue engineering may offer a promising new way for bone repairs.
Materials and Methods Materials 1 Experiment materials PLA-PEG was purchased from Dai Gang Biology (Jinan, Shandong).
Dediu, a novel route in bone tissue engineering: Magnetic biomimetic scaffolds, Acta Biomater. 6(2010) 786-796