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SAFM is the method of micro-power and micro-quantity scratch-type material removal in the state of turbulence with little volume abrasive.
Acknowledgements This research is sponsored by the National Natural Science Foundation of China (Grant No. 50875242, 50905163), Key Project of Zhejiang Province Natural Science Foundation (Grant No.
Dixit: International Journal of Machine Tools & Manufacture, Vol. 39 (1999), p. 1903-1923 [9] V.K.
Adsul: International Journal of Machine Tools & Manufacture, Vol. 40 (2000), p. 1003-1021 [10] D.F.
Schraub: Journal of Fluid Mechanics, Vol. 30 (1967), p. 741-773 [13] W.

The preparation of these materials as well as the characterization of properties are presented.
A small difference was found in the densities of composites obtained with different starting materials.
Fig.1. presents the microstructure (LM) of the sintered composite materials.
Thermal residual stresses – finite element model Residual stresses are defined as stresses that exist in materials or structures in the absence of any external load.
Pietrzak: Journal of the European Ceramic Society Vol. 27 (2007), pp. 1273–1279 [2] M.

Experimental Part Materials Nano SiO2 agen:self-made by the criterion described in reference 7 and named as type NS-2.
The blended raw materials were melted and extruded in twin-screw compounding extruder and the details are shown in table 2.
[7] Li Dongli, Xu Wencai, A kind of additive for polyolefin packaging materials.
Journal of Applied Polymer Science. 99,1207 (2005) [9] Chailier Yves, Production of Polypropylene Having Improved Properties.
Advanced Materials Research. 152-153,465 (2011) [13] K.

., Manitowoc, WI, USA 2Atriax Materials LLC, 2010 Hwy 58 Bldg. 1036 Oak Ridge, TN 37831 adavid.weiss@eckindustries.com, bgmikeblack@comcast.net Keywords: Semi-solid processing, extrusion, nanocomposites Abstract The production of nano-reinforced aluminum alloys in volume and quality suitable for subsequent shape casting has been problematic.
Additional material was produced using the 555°C billet temperature for the second stage extrusion.
Unrefined alloy containing 1.0 wt.% SiC nanoparticles showed strength improvement as well, but less than conventionally refined material.
European Journal of Scientific Research, 63 No.2 (2011), 204-218 [3] D.
Journal of Materials Science Letters June 1988, Volume 7, Issue 6, pp 578-580 [5] S.

Biffar Dept. of Prosthetic Dentistry and Dental Materials, University Greifswald, Rotgerberstr. 8, D-17487 Greifswald, Germany, klinke@uni-greifswald.de Keywords: pfm-restorations, surface, roughness, low fusing ceramics, porcelains, sintering, dentistry Abstract.
Materials and Methods On the base of compositional and microstructure differences eight dental ceramic material were selected for the test: four high-melting ceramics (> 900 °C) and four low-melting ceramics (< 800 °C) (Tab. 1).
Dentine power of each ceramic material was mixed with distilled water.
The surface roughness and topography of the ceramic materials were evaluated by laser profilometry [7], using a confocal laser scanner profilemeter (Fa.
Wennerberg, On surface roughness and implant incorporation, PhD Thesis, Institute for Surgical Science, University of Göteborg, Göteborg, 1996.

Main material of model is Plexiglas plate.
The teaching team determined the dimension was 1800mm×1200mm×1500mm according to material size.
Material selection: After the design plan was finalized, the team made the sketched model The next step was the material selection.
Selecting the materials can fully demonstrate the morphology of the model itself.
The main materials were including: (1) Plate type : Plexiglas plates with thickness of 1mm, 3mm, 5mm, ABS plastic board, rigid foam plastic, etc.; (2) Accessories for PVC pipe with different specifications and the corresponding elbow, adjustable tee, valve; (3) Other materials: metal frame , pulling bar , springs, barbed wire, single-chip , LED lights and so on.

Traditional methods are not only time-consuming and expensive, but also dependent on testing materials and machines.
Acknowledgement This material is based in part upon work supported by Guangxi Key Lab of Road Structure and Materials.
Advanced Materials Research, v 724-725, p 1489-1494, 2013, Applied Energy Technology [4] Chuanhai Wu.
Journal of Engineering Mechanics, 2009. 135(4): p. 324-333
Journal of Computing in Civil Engineering, 2009. 23(6): p. 340-347.

Introduction Cement-based materials such as mortar and concrete are porous materials.
The pore space of cement-based materials depends on the water-cement ratio, the duration of hydration, the type of cement, the type and percentage of mineral admixtures and the aggregate concentration.
Test Material.
Weiss et al, The influence of accelerated curing on the properties used in the prediction of chloride ingress in concrete using a Nernst-Planck approach, Construction and Building Materials, 2014 66 752-759
[4] Wu Hai-jun and Chen Ai-rong, Study of Durability Design Method for Bridge Structures [J], China Journal of Highway and Transport, 2004 17(3) 57- 61

Numerical Simulation and Application of Pre-Stress Tubular Pile for the Foundation Pit Engineering Xiangqiu Wang1,a, Wentian Liu2,b, Zhiguo Zhou3,c Yuhong Zhang1,d 1 Dept. of Civil Engineering, Foshan University, Foshan, 528000, China 2Faculty of Civil Engineering of Guangdong University of technology, Guangzhou,510006, China 3 Institute of Building Science in Guangzhou, Guangzhou,510440, China atongji_wxq@163.com,bgoodliuwentian@163.com, ccsu_zzhg@163.com, dzyh@fosu.edu.cn Key words: pre-stress tubular pile; retaining structure; model of FEM; engineering of foundation pit Abstract.
The tangential stiffness coefficient of contacting surface equals to, the normal stiffness coefficient is equals to, the physical and mechanical parameters of various materials of finite element model are shown in Table 1.
Table 1 Mechanical parameters of material material elastic modulus /kpa poiss ratio density / cohesion /kpa friction angle /(o) artificial filling soil 2500 0.4 18.5 15.0 12.0 colluvial clay soil 6200 0.35 19.0 33.0 18.0 diluvial clay soil 15000 0.33 19.0 45.0 15.0 residual clay soil 5500 0.38 19.0 35.0 16.0 pre-stress pile 2550000 0.24 26.5 anchor bar 210000000 78.0 In order to verify the reliability of calculating results with the finite element method, comparing the field testing values of foundation pit at the final excavating step of the pit with the calculating results of the finite element method, such as the bottom uplift of pit, the displacement of pre-stress tubular pile, etc.
[3] WANG Xiangqiu, YANG Linde: Building Structure Vol.35(2004), p.37~39 [4] WANG Xiangqiu,YANG Linde: Chinese Journal of Geotechnical Engineering Vol.24(2002), p.729~732 [5] WAN Wen, CAO Ping: Journal of Rock Mechanics and Geotechnical Engineering Vol.24(2005), p.1766~1771
[6] Goodman R E,Tayor R L,Brekke T L: Soil Mech Found Div,ASCE,Vol.94(1968) p.637~659 [7] Desai CS,ZamanMM,Lighter: Journal for Numerical and Analytical Methods in Geotechnics Vol.8(1984)p.19~43

Experiment scheme Eight wallboard specimens were tested to investigate the influence of filling materials, the number of rib grid and insulation layer on mechanical properties of wallboard.
Analysis on Nonlinear Damage of Ecological Composite Walls Filled With Different Materials Based on the Twin Shear Unified Strength Theory
Journal of Constructional Steel Research (JCSR), 2002, 58: 725-758
ACI Structural Journal/January-February 2004
Journal of Structure Engineering, 2004, 115(9):2204-2225.