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Finite element analysis of stress intensity factors in the cracking of brittle materials under biaxial loading H.
Jour. of Key Engineering Materials, Vol. 465, 123-128, publication, (2011)
Kachanov; “Interaction of a crack with a field of micro-cracks”, International Journal of Engineering Sciences, Vol. 21, pp. 1009-1018, (1983)
Chabaat; “Crack in brittle material at presence of a dislocation”, Advanced Materials Research, Vol. 921, pp. 2043-2047, (2014)
Chabaat; Stress field and energy analysis during the fracture of Composite materials, Journal of Applied Mechanics and Materials. pp 524 (2014)

Materials and Method We used active pure for analisis «PFA» grade MgO and technogenic raw materials of MPP «Tuva asbestos» as raw materials for composite magnesia binders.
Akchurin, Raw materials use of the Volgograd region in the technology of building materials (state and prospects), Reliability and durability of building materials and structures. 2 (2000) 3-9
Hai, Influence of EVA-latex on the composition properties of fiberglass-magnesia-oxychloride cement, Journal of Yuhan University of Technology, Materials of scientific education. 21 (2006) 138-142
Miryuk, Prospects for the use of waste in the technology of magnesian building materials, Science and the world. 11 (2014) 41-45
Geodakyan, New materials and products, based on local raw materials, Chem. g.

Schlipf: Materials Science and Technology Vol. 12 (1996), p. 391 [3] K.
Gleiter: Materials Science and Engineering A Vol. 381 (2004), p. 28 [4] N.
Little: Journal of Materials Science Vol. 25 (1990), p. 753 [5] Y.
Nagano: Journal of Materials Science Vol. 26 (1991), p. 241 [8] T.
Schlipf: Materials Science and Technology Vol. 12 (1996), p. 635 [9] K.

Also, applications of X-ray are based on the strong interactions with materials including transmission, absorption, diffraction, reflection, scattering, and emission.
Actually, the amazing effects of X-ray phase-contrast imaging with LEBRA-PXR has been reported.X-ray phase-contrast imaging is not due to absorption by materials but is based on the　phase difference of materials as in phase-difference microscopy.　
Materials and Methods: Subject.
Mori et al, Application of LEBRA-PXR to the diffraction analysis of minerals, Journal of Mineralogical and Petrological Sciences 101 (2006) 10-13
Kuwada, Y Hayakawa, K Nogami et al, Phase Contrast Imaging of Biological Materials using LEBRA‐PXR, AIP Conf.

Activation energy of pure and impregnated lignocellulosic materials obtained by isothermal method Chrebet Tomas1,a, Martinka Jozef2,b Balog Karol3,c and Turnova Zuzana 4,d 1,2,3,4 Institute of Safety and Enfironmental Engineering, Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology in Trnava, Paulinska 16, 91724 Trnava, Slovak Republic atomas.chrebet@stuba.sk, bjozef.martinka@stuba.sk, ckarol.balog@stuba.sk, dzuzana.turnova@stuba.sk Keywords: activation energy, lignocellulosic materials, isothermal method, fire retardants Abstract.
Degradation of lignocellulosic materials was performed at various temperatures and various air-flow speeds.
Used materials We selected a sample of spruce wood as the currently used material for constructions.
Balog: Study of flaming and nonflaming combustion process of cellulosic materials.
Nishimoto: Thermogravimetry of wood treated with water-insoluble retardants and a proposal for development of wood materials.

Effects of surface density on the material It can be seen from Figure 2, in the case of the same thickness, in a low-frequency sound, the absorption curves of the three materials are almost coincidence, indicating that the absorption capacity of the three kinds of materials to low-frequency sound waves is basically the same and in the low-frequency sound absorption sequel is poorer, which is consistent with the law that the absorption of porous materials to low-frequency sound is poor, and justify the effect of changing the size of material surface bulk density on low-frequency sound absorption performance is not obvious.
From the above analysis we can see, increase in material density can increase the absorption properties of materials, but its effect on low frequency sound absorption is not obvious, it can primarily improve the absorption capacity of materials in the section of high-frequency sound.
Such as: this article only conducts three kinds of combinations of different density material, in the future we can combine with more different materials of different density in different ways, in order to identify the best combination ratio.
References [1] Pele C E, Nonwovens Make Themselves at Home, NonwovensIndustry,2000,(2),3 [2] Youn Eung Lee and Chang Whan Joo, Sound Absorption Properties Of Recycled Polyester Fibrous Assembly Absorbers, AUTEX Research Journal,3(2), 2003 [3] T.
Adachi, The Development Of Sound Absorbing Materials Using Natural Bamboo Fibers, High Performance Structure And Composites Book, WIT Press 2002 [4] Kannan Allampalayam Jayaraman，Acoustical Absorptive Properties of Nonwovens，A thesis submitted to The Graduate Faculty of North Carolina State University in partial fulfillment of the requirements for the Degree of Master of Science，2005 [5] Kyoichi Watanabe, Yoshiaki Minemura, Kouichi Nemoto and Hiroshi Sugawara, Development Of High Performance All Polyester Sound Absorbing Materials, JSAE Review 20, 1999, 357--362显示对应的拉丁字符的拼音   字典 1.

Many sheet materials do not exhibit constant properties over the sheet thickness.
Lenard, Metal Forming Science and Practice, Elsevier, 2002
Davies, Materials for automobile bodies, second ed., Elsevier, 2012
Gatenby, Lüders elongation in AI-Mg alloy AA5182, Materials Science and Technology 13 (1997) 660-666
Tirupataiah, The hardness-flow stress correlation in metallic materials, Bull.

Modeling the Stress-Strain Curve of Elastic-Plastic Materials Natalya Ya.
The properties of materials are investigated by experimentally obtained strain diagrams.
Materials Science Forum, pp. 575–578, 539–544, 2009
Materials and Design, 87, 540–552
Generalization of the Ramberg–Osgood Model for Elastoplastic Materials: Journal of Materials Engineering and Performance

According to the above phenomenon, Wu Han university of science and technology practiced the quality monitoring and security platform in 2008 that about "three Full three Duo" the graduation thesis of the schools, secondary Department.
University of electronic science and technology opened the graduation-designing management system in 2009.
After the students complete the design tasks, through the platform upload all the graduation-designing documents including specification, opening report, literature review, final draft of the thesis (or work) and accessories materials etc. .The tutors conduct a comprehensive review to student's latest draft thesis.
Acknowledgements This work was financially supported by Science Technology Research Project of Heilongjiang Education Department: Research on Domain Semantic Data Integration based on Ontology (12531059) References [1] Jin Ming Liang: Journal of Sichuan University of Science & Engineering(Natural Science Edition).
Forum Vol. 32 [7] Yan Na Qiu: Journal of the Chinese computer(2011).

Experimental procedure Starting materials.
Journal of the European Ceramic Society 28(2008) 329~344
Journal of the European Ceramic Society 29(2009) 31~38
Journal of alloys and Compounds 460(2008) 599~606
Journal of the European Ceramic Society 29(2009) 347~353