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Experimental Materials and sampling.
In fact, the different materials at local zone around the starting notches make the fracture toughness of material KIc vary.
Disfigurement analysis on fracture splitting of connecting rod by numerical simulation.MATERIALS SCIENCE & TECHNOLOGY Vol.16,pp.776-780,(2008)
Materials Science and Engineering Vol. 12,pp. 1-12,(2007) [10].
E., Plane Strain Fracture Toughness Testing of High Strength Metallic Materials, ASTM, STP 410,(1969)

Implementation of technological process in vacuum provides purity of received coatings and their high adhesion to materials with different physical and chemical characteristics.
Wasa, Handbook of sputter deposition technology: fundamentals and applications for functional thin films, nano-materials and MEMS, William Andrew, Norwich, 2012
Adachi, Thin film materials technology: sputtering of compound materials, William Andrew, Norwich, 2004
Kesayev, The cathode processes of an electric arc, Science, Moscow, 1968
Selivanov, Use of compact spectrometer for plasma emission qualitative analysis, Journal of Physics: Conference Series. 567 (2014) 012039

The hydrometallurgical leaching of such materials has a low degree of extraction of target components in the solution at atmospheric pressure [3].
Using the method of alkali-fusing previously been investigated for the processing of other copper-containing materials [20, 21], which shows the possibility of significant enrichment of raw materials.
Consequently, the technology of processing of low-grade copper raw materials is proposed that allows to increase the comprehensiveness of raw materials use and avoid expensive high-corrosion methods.
J. of Eng. and Science. 2 (2013) 01-16
Rogozhnikov, Alkali fusion-leaching method for comprehensive processing of fly ash, Technogen Conference Proceedings, KnE Materials Science. 1 (2017) 89-96

There are two main groups of electroluminescence organic materials used for OLED namely small molecule materials and conjugated polymers.
There are few examples of polymers such as PPV, MEH-PPV, PF and PFO that meet the criteria for materials selection for OLEDs devices.
This will contribute to higher absorption peak of nanocomposites materials in the visible region.
Hsu, Optical and electrical properties of PPV/SiO2 and PPV/TiO2 composite materials.
Wang: Near-Infrared Organic Materials and Emerging Applications.

Introduction In recent years, the constant search for new materials to limit the carbon footprint of polymeric materials has resulted in the development of new biopolymers obtained from renewable resources.
Experimental Materials.
The cryofractured surfaces of the materials were observed using scanning electron microscopy (SEM) instrument (S-4300SE/N, Hitachi, Japan) operating at 5kV.
Composites Science and Technology, 69 (2009) 1756-1763 [5] K.
Jia, Poly(vinyl alcohol)/halloysite nanotubes bionanocomposite films: Properties ans in vitro osteoblasts and fibroblasts response, Journal of Biomedical Materials Research Part A, 93A (2009) 1574-1587 [9] Pi.

Huang and Tao et al [4] investigated the fracture process of nano-crystal materials under axial tension.
Metallic Functional Materials.
Materials Review, Vol.15(2001), p.5-6
Computational Materials Science.
[4] Huang Dan, Tao Wei-ming, Guo Yi-mu, Ordnance Material Science and Engineering, Vol.28(2005), p. 1-4

The main internal factors are the chemical composition of parts material, material structure, material internal defects, the characteristics of material itself and heat treatment on the surface of the material.
(1) Where, is cumulative damage, is the actual stress cycle of the -level load, is the fatigue life under the -level load, is a property of materials, take =1.
(2) Where, is the mean equivalent stress, is the stress amplitude, is the mean of cyclic stress, is the ultimate strength of materials.
Acknowledgement This research is financially supported by the National Natural Science Foundation of China under Grand No. 51105124 and Zhejiang Key Discipline of Instrument Science and Technology.
Journal of Nanjing University of Aeronautics &Astronautics, 2003.2, 35(1):25-29.

Direct Torque Control of Brushless DC Motor Long Wu 1a, Liu Yi Ling 2b, Shuai Chen 1c 1Huainan Normal University, Huainan 232001 ; 2 Anhui University Of Science & Technology, Huainan 232001; alwu@hnnu.edu.cn,blyling@aust.edu.cn,cshuaich12@126.com, Keywords: Brushless Motor, Current Commutation Torque Ripple, Matlab Simulation,Direct Torque Control Abstract.
In China rare earth resources are rich and the rotor of brushless motor is constructed with rare earth materials, this further promote the development of brushless motor in our country.
Acknowledgements National Natural Science Foundation (51104003); Natural Science Foundation of Anhui Province (KJ2010B200) Reference [1] Yao Zhiyun, Yang Yuefeng.
Journal of Motor and Control, 2005, vol.9, no 6, pp.533-536.

Motion Performs Evaluation of a Numerical Machine Tool Based on Extenics Theory Chen Liu 1, a, Xiangli Bu 2,b 1 North China Institute of Science and Technology, China, 065201, 2 North China Institute of Science and Technology, China, 065201, aliuchen@ncist.edu.cn, bbuxiangli@ncist.edu.cn Keywords: extenics theory; motion performs evaluation; AHP(analytic hierarchy process); numerical control machine tool Abstract: In order to evaluate motion performs of a numerical control machine tool objectively, the matter-element model for the motion performs evaluation of the NC was established based on extenics theory, the motion performs evaluation indexes of NC was made of multiple elements.
References [1]Zhao Yugang,etc: Technology of Numerical Control, edtied by engineering industry Publishing House, BJ(2003)In Chinese [2]Liu Chen, etc: Quality Evaluation of Belt Conveyor Based on Extenics Theory, Advance Materials Research,Vols.694-697,Mar.2013
[3]Zhang Genbao, etc: A comprehensive evaluation method of fuzzy matter element for CNC equipment quality , Journal of Chongqing University, VOL.34No.1, Jan.2011.
In Chinese [4] Cai Wen,in: Matter-element modle and application, edtied by Literature of Science and Technology Publishing House, BJ(2008).

Experimental research on the frictional effects of the slide-roof system1 ZHANG Liming TIAN Zhichang （Institute of Architecture & Civil Engineering, Inner Mongolia University of Science and Technology） Key words: slide-roof, friction, TMD, roof, isolation, robustness SUMMARY:The experiments of a five-story steel frame on shaking table verify that the slide-roof system can markedly reduce vibration.
The materials of the sliding surfaces are steel-steel, so the static frictional coefficient was about 0.15 and the moving frictional coefficient was about 0.10.
Supported by the fund of Office of Science and Technology, Baotou, China Table 1 Parameters of the experimental models Story Mass(kg) Lateral inter-story stiffness(N•m-1) Story height(m) M-1 M-2 M-1 M-2 1 615 615 3.25×106 3.25×106 0.90 2 615 561 4.58×106 4.58×106 0.80 3 615 615 4.58×106 4.58×106 0.80 4 615 615 4.58×106 4.58×106 0.80 5 720 134 3.82×106 3.82×106 0.85 SRS / 586 / 2.28×105 0.00 Fig.1 Photo of the experimental model Fig.2 Exprimental model of SR Fig.3 The envelops of the displacement histories of the shaking table and Floor 1 excited by harmonic sweep frequency wave with the maximum acceleration 0.57 m/s2 steel-steel kinetic frictional coefficient 0.1 (a) Displacement’s envelop the Shaking table 0 0.5 1 1.5 2 2.5 3 0 20 40 60 Time(s) Disp.
“Optimum friction factor for roof-friction tuned mass damper”, Journal of Tsinghua University (Science and Technology), (S1):, 2002, pp.97-100