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Introduction In numerical simulation of concrete, mesoscopic numerical model is more effective to reflect the inhomogeneity of material composition and the local properties of material damage in comparison with macroscopic model[1-3].
Beijing: Science Press,2003
Review on Micromechanics Studies of Concrete [J].Journal of China Institute of Water Resources and Hydropower Research, 2004 , 2(2): 124 -130
Mesoscopic Numerical Evolution Analysis of Concrete Damage Under Uniaxial Tension and Compression[J].Journal of Archi-tecture and Civil Engin- eering,2007,24(1):1-6
Henan Science,China 2002,20(6):634-637

Study on the Preparation of TiN Nano-Particles in a Solidified Low Alloy Steel Guobiao Lina, Zidong Wangb, Hong Zhangc, Rui Gongd, Lin Yange School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China alin571@163.com, bwangzd@mater.ustb.edu.cn, czhanghong@mater.ustb.edu.cn, dgongrui@163.com, eyanglin@163.com, Keywords: centrifugal casting; TiN precipitates; low alloy steel; dispersed particles Abstract.
Yang and S.H.Wang: Materials Science and Engineering Vol.
Maziasz: Journal of Nuclear Materials Vol. 367-370 (2007), p.48 [7] F.
Fourlaris: Materials Characterization Vol. 56(2006), p.214-226 [9] X.
Zhao: Journal of Iron and Steel Research, International Vol. 15(2008), p.57 [12] Stephen Liu and Fang-Chun Liao: Materials Science and Engineering Vol.A244 (1998), p 273 [13] X.

In these methods Fe and Al2O3 powders were used as starting materials.
These processes should be followed by a powder consolidation step to obtain bulk structural materials [1].
Jin: Materials Science and Engineering Vol.
Niyomwas: Songklanakarin Journal of Science and Technology Vol. 30(2), (2008), p. 227 [5] N.A.
Niyomwas: Songklanakarin Journal of Science and Technology Vol. 32(2), (2010), p. 175 [7] S.

The localization of deformation in recrystallizing materials is investigated via a series of two-dimensional grain-scale numerical simulations.
Introduction The localization of deformation in geological materials is a widely studied phenomenon at all scales, from the formation of deformation bands within single grains, up to crustal scale shear zones [1,2,3].
Nevertheless, grain size increase during deformation is commonly observed in materials below their steady state grain size.
The two types of localization demonstrated by this simple system indicate the limitations of applying simple flow laws to natural materials, as even over very short time scales the material is undergoing cyclic deformation behavior.
Poirier, Shear localization and shear instability in materials in the ductile Field, Journal of Structural Geology 2 (1980) 135-142

Journal Citation (to be inserted by the publisher ) Copyright by Trans Tech Publications Development of Hydroxyapatite Ceramics with Tailored Pore Structure Ulrike Deisinger1, Frauke Stenzel2 and Günter Ziegler1,2 1 Friedrich-Baur-Research Institute for Biomaterials, University of Bayreuth, 95440 Bayreuth, Germany, e-mail: ulrike.deisinger@fbi-biomaterialien.de 2 BioCer EntwicklungsGmbH, Bayreuth, Germany Keywords: hydroxyapatite ceramics, interconnecting porosity, slip casting, bone substitute materials, rapid prototyping Abstract.
Materials and Methods For producing the slurry the commercially available hydroxyapatite powder from Merck, Germany, was used.
Journal Title and Volume Number (to be inserted by the publisher) Green and sintering density values were determined with cast dense cylinders.
By using different types of polymeric pore models with diverse grades of porosity (50 to 96 vol%) and pore sizes (400 to 900 µm) as basic materials the pore structure of the bioceramic (undirected pores as well as defined pore channels) could be tailored according to the requirements of the specific implantation site.
Tian: Journal of Materials Science Vol. 36 (2001), p. 3061-3066 [5] M.

The notion of defects in PPy bulk material has never been demonstrated before.
Gu, et al: Progress in Polymer Science, Vol.36 (2011) No.10, p.1415 [2]Dhibar S., Sahoo S.
:Journal of Applied Polymer Science.
Wan: Journal of Materials Chemistry, Vol.11 (2001) No.2, p.404 [16] J Bhadra, D Sarkar: Indian Journal of Physics, Vol.84 (2010) No.10, p.1321 [17] A.
Caruso: Advanced Materials, Vol.13 (2001) No.1, p. 11.

Kovacs and Fabian Ritz1,b 1Institute of Materials Science and Engineering (WKK), University of Kaiserslautern, P.O.
Yang, Factors influencing the GBF size of high strength steels in the very high cycle fatigue regime, Materials Science and Engineering: A, In Press, Corrected Proof (2010)
Weng, Relationship among fatigue life, inclusion size and hydrogen concentration for high-strength steel in the VHCF regime, Materials Science and Engineering: A, 527 (2010) 559-564
Sakai, Review and Prospects for Current Studies on Very High Cycle Fatigue of Metallic Materials for Machine Structural Use, International Journal of Fatigue, 3 (2009) 425-439
Stanzl-Tschegg, Ultrasonic Fatigue, Encyclopedia of Materials: Science and Technology, Second Edition (2001) 9444-9449

A hexagonal pore structure was found in the synthesized materials by HRTEM analysis, which confirms that the synthesized materials are MCM-41.
Materials and Methods Materials.
Hexagonal pore structure present in synthesized materials observed by HRTEM, which confirms that the synthesized materials are MCM-41.
Kemner: Science Vol. 276 (1997), p. 923 [7] T.
Su: International Journal of Inorganic Materials Vol. 3 (2001), p. 75 [18] I.V.

However, all of them present some disadvantages, low decolorization rate and second pollution of adsorbing materials for water body[2].
It is imminent to empolder new waste water treatment materials possess high performance and environmental friendly character.
Materials and methods Materials and reagents.
Bhanu, “Biodegradable Polymers for the Environment”, Science, vol297, issue2, 803-807, 2002 [4] T.
Bhudeb, “Flocculation : A New Way to Treat the Waste Water”, Journal of Physical Sciences, vol10, issue5, 93-127, 2006 [5] D.A.

The error of predicted force is 6.5% due to the assumption of isotropic material.
Choi A lower upper-bound solution for shear spinning of cones, International Journal of Mechanical Sciences (2003)
Klimmek, Numerical investigation on dynamic effects during sheet metal spinning by explicit finite-element-analysis, Journal of Materials Processing Technology (2006)
[4] Lin Wang and Hui Long, A study of effects roller path profiles on tool forces and part wall thickness variation in conventional metal spinning, Journal of Materials Processing Technology (2011)
Ma, 3D FEM analysis of influence of roller feed rate on forming force and quality of cone spinning, Journal of Materials Processing Technology (2007)