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TURUNTAEV Sergey Institute of Geosphere Dynamics of Russian Academy of Sciences, Moscow Institute of Physics and Technology, Leninsky prosp., d.38, k.1, 119334, Moscow, RUSSIA s.turuntaev@gmail.com Keywords: Elastic waves, seismic waves, tensile fracture, laboratory experiment, fatigue fracturing.
First fractures appeared in visually intact material, later fractures were preceded by a cloud of small "micro" fractures.
First fractures appeared in visually intact material, later the fractures were preceded by a cloud of small "micro" fractures.
Scholz, Experimental study of the fracturing process in brittle rock, Journal of Geophysical Research, 73, 41 (1968) 1447–1454

Logé. 2018, Progress in Materials Science, Vol. 92, pp. 284-259
Misiolek, P.T Wang. 2005, Journal of Materials Science, Vol. 40, pp. 3861-3863
Montheillet. 2000, Materials Science and Engineering A, Vol. 283, pp. 274–288
Hutchinson, Bevis. 2012, Materials Science Forum, Vols. 702-703, pp. 3-10
Trond Furu, Hans Erik Vatne. 2000, Materials Science Forum, Vols. 331-337, pp. 843-848

The earliest studies about contact was proposed by Hertz and a Hertzian contact model was presented with the assumption of ideal hemisphere, elastic deformation[1].The Hertzian model is only valid for the situation of isotropic materials and small deformation.
In this paper, the Greenwood and Williamson’s model is employed as the elasto-plastic constitution of the materials.
Acknowledgements This work was financially supported by the National Key Basic Research Program of China (2007CB724407), the National Natural Science Foundation of China (51005175), Ph.D.
Programs Foundation of Ministry of Education (20070698108) and Major Science & Technology Projects of High-end CNC Machine Tool and Basic Manufacturing Equipment (2010ZX04014-015).
Molinari and etc.: Journal of the Mechanics and Physics of Solids Vol. 53 (2005), p. 2385-2409

Results accuracy was verified by determining percentage relative error of mass estimation with respect to the value calculated based on the machine geometrical and material properties.
Approximate value of mass M2, determined on the basis of knowledge of machine geometrical (Fig. 5) and material properties, equals 138 [kg].
Acknowledgement The research work has been supported from funds of the Polish Ministry of Science and Higher Education, carried out under the statutory WIMiR/KAP No. 11.11.130.958.
Iwaniec, Selected issues of exploitational identification of nonlinear systems (in Polish), AGH University of Science and Technology Press, Krakow, 2011
Cieplok, Vibration amplitude of symmetrically suspended vibrational machine during transient resonance (in Polish), Technical Journal z. 1-M, Cracow University of Technology Publishing House, 27-45, 2008

(11) Where CF is experience coefficient determined by work-piece material and cutting conditions; xF is the exponent of ap; yF is the exponent of f; nF is the exponent of v; KF is the Correction coefficient
Rough work-piece is a round bar with the dimensions of f65mm×130mm, material: 45#(GB).
Machine tool conditions: CNC lathe CK6136; feed rate range 10～5000mm/min, spindle speed range 100～2500r/min; Cutter 1: material is cemented carbide YT15; cutter parameters: rake angle =15°, tool cutting edge angle =95°, tool minor cutting edge angle =5°, tool cutting edge inclination =0°, corner radius =1mm; cost of a tool Ct=10(yuan); non-cutting time tct=1min; Cutter replacement time tct=0.6min; time cost M=10yuan/min.
Thanks The paper is supported by National science & technology major projects of "high-end CNC machine tools & basic manufacturing equipment"(2009ZX04002-061), thanks for their strong support.
Tang: Journal of Material Processing Technology.

Mg(OH)2 as Alkaline Source in Peroxide Bleaching of Wheat Straw Pulp Benping Lin1,a, Yanlan Liu1,b, Kefu Chen2,c 1School of Chemistry and Biology, Changsha University of Science and Technology, Changsha, 410076, China 2State Kay Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China aBenping2008@yahoo.com.cn, bliuyanlan0305@yahoo.com.cn, bppechenkf@scut.edu.cn Keywords: Mg(OH)2; Wheat Straw Pulp; Hydrogen Peroxide Bleaching; Brightness Abstract.
On the other hand, research and practice indicated that wheat straw was a valuable raw material for manufacturing paper [2].
Hence, in response to increasing cost of manufacturing and shortages of wood fibres, papermakers use wheat straw as a raw material for papermaking, especially in the inadequate forest resource countries, such as China, India and Spain et al.
Experimental Materials.
Ni: The Canadian Journal of Chemical Engineering, 83(2005), p610-617

Concrete is considered to be continuous and uniform material, of which the uniaxial compression stress strain curve is proposed by Z.H.
Guo [9], while the Mises’ yield criterion and Rankine’s crack criterion are used in the dispersed crack model and the bond-slip relationship between concrete and FRP, considered as elastic material, is proposed by X.Z.
Input parameters such as material parameters of FRP, the strength of concrete, the section area of steel bar and the internal forces are set as random variables, while the maximum tensile stress of concrete element st, the maximum tensile stress of FRP element sf, and the relative slip displacement on the interface s0 are output parameters.
Theory and application of structural reliability [M].Science Press,2007.08:105- 108.( In Chinese) [2] H.J.Liu.
Journal of The Structural Division.1979,7,(5),17-29

Study on the Effect of Fe3O4 Nanoparticle Dopants on the Properties of Magneto Optical Glasses Qiuping Chen, Wanlin, Qiuling Chen, Shuangbao Wang Department of Material Sciences &.
Introduction Study on the Faraday Effect of magneto-optical materials has attracted many attentions [1-3].
Magneto-optical glasses, as a kind of functionality material, can be used as sensor, memory medium and switch in the field of optical fiber communication thanks to their magnetic optic properties.
Zhou, Solid State Ionics 90 (1996)151 [14] E.P.Golli, A.Ingram, journal of physics: conference series 79(2007)012003 [15] CHEN Q.; Ferraris M; Milanese, J.OF NON-CRYSTALLINE SOLIDS, 324, (2003) 1-11 [16] P.

Young: Advanced Materials Research Vol. 97-101 (2010), p. 1212 [6] C.
Mikkelsen: Materials Science and Engineering A, (2003)Vol 361, p.198 [12] N.
J: Journal of the Society of Corrosion and Protection, Vol. 29 (4) (2009), p. 315 [14] Essuman, E., et al., Oxid.

Table 1 Date for the finite element model parameters of the thin-walled workpiece Material Length[mm] Width[mm] Height[mm] aluminum alloy 7075 110 1 45 The harmonic responses analysis of this mode is implemented.
The material of the dynamic vibration absorber is aluminum alloy 7075.
Acknowledgement This research has been funded by the major national science and technology special projects (project No. 2010ZX04014-052).The authors are grateful for the financial support.
Solution and Analysis of Chatter Stability for End Milling in the Time-domain[J].Chinese Journal of Aeronautics,2008,2:169-178
[6] Y.Zhang,N.D.Sims,Milling Workpiece Chatter Avoidance Using Piezoelectric Active Damping:A Feasibility Study.Smart materials and structures,2005,14(6):65-70