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Among the various techniques used for producing UFG and NC-structured materials is the powder metallurgy (PM) [3].
Zhu, The role of stacking faults and twin boundaries in grain refinement of a Cu–Zn alloy processed by high-pressure torsion, Materials Science and Engineering A 527 (2010), 4959-4966
Sadek," Fabrication of High Performance PM Nanocrystalline Bulk AA2124", Journal of Materials Engineering and Performance (2009), 356-367
Langdon," Using high-pressure torsion for metal processing: Fundamentals and applications", Progress in Materials Science 53(2008), 893–979
Langdon," Ultrafine grains and the Hall–Petch relationship in an Al–Mg–Si alloy processed by HPT", Materials Science and Engineering, A 532 (2012), 139-145

DTH drill fracture analysis of the key parts Zhang Mingsong 1, a, Zhou Chengjun, Zhao Chunhua and Ke Jianjun 1College of Mechanical and Materials，China Three Gorges University,Yichang 443002, China azms@ctgu.edu.cn Keywords: DTH drill; Piston; Fracture characteristics; Gap analysis; Fatigue fracture.
The mechanics of materials[M].Beijing: Higher education press, 1980 [2] LI Wen hong, HUANG Xiaochun. 
Beijing university of aeronautics and astronautics journal,1998,12
Material failure analysis[M].Shanghai: East China university of science and technology press, 2009(6)
Mechanical fatigue and reliability design[M].Beijing: Science press, 2008(8)

Experimental Section Materials.
Sensors Journal, IEEE, 2012. 12(6): p. 1901-1905
Applied Mechanics and Materials, 2014. 469: p. 59-63
Materials Review, 2009(21): p. 30-33
[7] Qi, X.K., Printing materials and eligibility. 2008, Printing Industry Press

However, the fatigue fracture fractography may not be exactly alike due to variance in the materials, loads and environmental mediums.
Beijing:Science Press,2009: 282-287
International Journal of Fatigue,2002(24),8: 841-846
Journal of Mechanical Strength, 2005(27),3 :358-370
Beijing: Science Press, 1993:380

In addition, this study section is simulated using Advantage FEM software, Materials are selected in the software built-in material library, and Grid is divided by adaptive remesh strategy.
The corrugated dislocation loops developed from the tool tip to the inside of materials.
Journal of Materials Processing Technology. 220(2015):1-26
Engineering Science and Technology, an International Journal. xxx(2014):1-6
Shanghai：Shanghai science and Technology Press.1988

Study on Nano-SiO2 measured by Atomic Force Microscope Jing Zhang1, a, QiZhi Cao1,b and JianYing Li1,c 1 Department of Physics and Electronic Information Science, Guangxi Teachers Education University, Nanning 530023; china a zj_happiness@163.com, b qzhcao77@163.com, c ljy@gxtc.edu.cn Keywords: Atomic Force Microscope; Nano-SiO2; Particle size Abstract.
Nano-SiO2 is added to other materials to improve certain characteristics of the material.
When the core of Al203/Si02 nano-composite materials is prepared, adding the right amount of SiO2 powder to make of nano-ceramic cores sintered, the composite density increased and sintering temperature decreased, the strength improved [3].
Journal of Materials Science.Letters, Vol(15). 1105~1107(1996) [2] Li jima S.

References [1] Meck HR: International Journal of Mechanical Sciences; Vol.11(1969): p.199–207
Journal of Structural Engineering, ASCE Vol.125(1999) p.515-23
[4] Earls CJ: Journal of Constructional Steel Research Vol.51(1999),p.81-97
Journal of Structural Engineering (ASCE) Vol.130(2004) ,p.1931–40
Journal of Structural Engineering (ASCE) Vol.131(2005) ,p.457–66

Dmitry Vysochinskiy1,a, Terence Coudert2, Aase Reyes1, Odd-Geir Lademo2,1 1Structural Impact Laboratory (SIMLab), Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway 2SINTEF Materials and Chemistry, N-7465 Trondheim, Norway a dmitry.vysochinskiy@ntnu.no Keywords: formability, AA6016, aluminum, DIC, Marciniak-Kuczynski test, time-dependent method, FLD, sheet metal, metal sheet forming Abstract Forming limit strains are used to construct a forming limit diagram (FLD), which is a diagram in the principal strain space, traditionally used for designing forming operations of sheet metals.
The material tested is AA6016 aluminum alloy in three different conditions: virgin material and material subjected to 5% and 8% deformation by rolling.
J. of Mechanical Sciences, 1967. 9(9): p. 609-612, IN1-IN2, 613-620
[3] International Standard ISO 12004-2 Metallic materials - Sheet and strip - Determination of forming-limit curves.
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 1999. 213(8): p. 811-817.

Experimental Materials. 40 male BALB/c mice were obtained from the 4th Military Medical University, and maintained under standard conditions.
From the experimental results which was discussed above, the protect effect of EMR shielding fabric and stainless steel fiber blend fabric was excellent, which was caused by reflect and absorption action against radiation by the metal materials.
Le: China safty science journal, Vol. 11(2001), p. 21
Zhang: Journal of Hefei University of technology, Vol. 30(2007), p. 1
Dong: Electromagnetic shielding and absorbing material (chemical industry press, Beijing 2007)

Second:On the skilled use of the software, there is a large difference between it and graphic design software,we need a certain stereo feeling and combination with material object in the process of design.
content for the reform of practice teaching.Topic work need set model and the database establishment, go on cross major cooperation.This topic will arrange students with packaging and purposefully computer professional to participate in the project development. improving packaging professional students withthree-dimensionalmodeling skills, at the same time improve students' comprehensive application of knowledge in computer science and skills of problem-solving, provides a convincing project experience background for the students’ employment. 4.2Work-integrated learning task instance application in teaching CHINT electric exploration and practice of carton packaging modeling technology based on geometric model and computer graphics,first of all to abstract real scene,constructing a virtual three-dimensional geometric modelscene with a polygon,establish a virtual environment of light and material model,Then go on texture mapping and control parameter setting,at last, through the software
Fig 2 Packaging decomposition effect Fig 3 Effect picture with mapping In order to make the effect more realistic, the model can be externally mapped, CHINT electric appliances are packed in cartons for brown and yellow collocation of corrugated paper, we can have corrugated texture effect pictures token dealing with the Photo shop and stored in 3 D Rhino material library.When using material tool in the toolbar import material deal with beforehand,the packaging body block map shows in Fig 3.
CHINT electric appliances are packed in cartons of a large number of irregular objects can be easily be simulated,on the other hand, for complex entity model, uses the texture mapping can simulate the real details,Simpling model’s construction process, reduce the complexity of the entity model,you can also give bright color model etc.The coaming structure using two-dimensional map effect Fund program ：Comprehensive practice program based on professional courses in Wenzhou Vocational Technical institute in 2014 (WZYJG14024) References [1] ZHENGzhi-wu.Some discussions on the "work-integrated learning" of higher vocational art education[J]Journal of zhejiang vocational college of art， 2013,(01)
Higher vocational education personnel training way and mechanism innovation[J]Journal of shenyang normal university(JCR Social Science Edition) ，2008,(01)