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Introduction In machining process, part material is removed in each cutting operation.
The feature information and cutting parameters of POi+1, such as feature surface, direction of material removal, cutting tool type, cutting machine and cutting allowance, are used to select the proper type and parameters of solid local operations.
Acknowledgements The research is supported by a grant from National Natural Science Foundation of China (No. 51075036) References [1] Verma, Arvind Kumar andRajotia, Sunil, 2010, “A review of machining feature recognition methodologies”, International Journal of Computer Integrated Manufacturing, 23: 4, 353- 368 [2] NandakumarSridharan, Jami J.
Shah, 2004, “Recognition of multi axis milling features: part I – topological and geometric characteristics”, Journal of Computing and Information Science in Engineering, September 2004, v4, 242-250 [3] NandakumarSridharan, Jami J.
Shah, 2005 “Recognition of multi-axis milling features: part II – algorithms & implementation”, Journal of Computing and Information Science in Engineering, March 2005, v5,25-34 [4] M.Gulesin.

., USA) is a typical fused deposition modeling (FDM) processing equipment which composed of feeding system and nozzle, that is R=(Elite, Nozzle)；It is also can be “is a”, shows class A is subclass of B, it means the concept that “kind-of” parent class expressed, such as Elite 3D printer nozzle includes model tip and support tip, there is R=(Nozzle, Model tip); When it expressed “attribute-of”, means attribute relationship, for example, Elite 3D printer needs supply water-solubility support materials, that is R=(FDM, Support); also be instance relationship “instance of”, for example, R=(FDM, Elite). 3) A glossary set in the field will be constituted by conceptual entity set E, for example, the equipment and service of enterprise include RP/RT, CAD/RE, precision measurement and detection, CNC processing, RP raw materials service, RP software maintenance and inter-discipline promotion.
Gruber, International Journal of Human-Computer Studies, 5(1995) 907-928
Jin, Journal of Software, 3 (2003) 350-355
Tan, Information Sciences, 179 (2009) 2794-2807
Xin, The Journal of China University of Posts and Telecommunications, 4 (2008) 126-130

The following parameters were considered materials listed in Table 4 below.
Reif, Thermal Insulation Plasters Utilising Natural Fibres, in Advanced Materials Research (2015) 97-100
Vodová, Development of Thermal Insulation Materials Based On Silicate Using Non-Traditional Binders and Fillers, International Science Index, 2014, pp. 684-687
Polypropylene), in: Construction and Building Materials, 2014, pp. 159-165
Vinson, Shrinkage Cracking and Durability Characteristics of Cellulose Fiber Reinforced Concrete, in: Materials Journal, 1993, pp. 309-318.

Soil and water conservation academic journal,2002,16(3):114-117
Journal of Arid Land Resources and Environment,2011,25(11):176-180
Journal of Irrigation at ion and Drainage,2006,26(6)：71-73
Journal of hydraulic engineering,2004,35( 5):20-24
Beijing: Science Press,2012.

Their effects on the different properties of materials (fatigue, rupture, corrosion, friction, etc.)
Indeed the material is not homogeneous and presents a lateral stress gradient.
Barral: Proceeding of ICRS2, Elsevier Applied Science, London, (1989), p.172
Barrallier : Texture characterization of hexagonal metals : magnesium AZ91 alloy, welded by laser processing, Materials science and engineering, in press, (2006)
Constantinescu: On the inversion of subsurface residual stresses from surface stress measurements, Journal of the mechanics and physics of solids, Vol. 42, (1994), p. 1767-1787

Cadmium chloride and thiourea were used as raw materials to synthesize precursor solution, and CdS thin films were prepared on glass substrates by the home-made spray pyrolysis thin-film preparation device.Affects of preparation parameters, for example, the substrate temperature and fog particle velocity on the structure of CdS thin films were emphatically studied in the paper.
The CdS film as the window material of CdTe/CdS solar cells is also one of the focuses in the field.
References [1] Wu X, Keane J C, Dhere R G et al: 2001Proceedings of 17th European Photovoltaic Solar Energy Conference(Munich:WIP) p995 [2] Cunningham D, Davies K, Grammond L et al: 2000Proceedings of 28th IEEE Photovoltaic Specialist Conference(Anchorage: IEEE) p13 [3] Fthenakis VM, Kim H C: 2006European Material Research Society Meeting, Symposium O(Nice:EUMRS) p125 [4] Cunningham D, Rubcich M, Skinner D: 2002 Prog Photovolt Res.Appl.10159 [5] Bonnet D: 2000 Thin Solid Films361-362 547 [6] Rose D, Powell R, Jayamaha U et al: 2002Proceedings of29thIEEE Photovoltaic Specialist Conference(New Orleans: IEEE) p555 [7] Suyama N,AritaT,Nishiyama Y et al: 1990 OptoelectrDev.Tech.5259 [8] Zhang Junsong, Ma Juan, Cao Zhijian et al: 2005 Journal of Nanjing Normal University (Natural Science) 28 p64

The paper is focused on a numerical study of fracture test of quasi-brittle materials which is a combination of both the wedge splitting and the three-point bending configuration.
Fracture-plastic material model for simulation of quasi-brittle materials (concrete) – which is used for all configurations – combines the constitutive models for tensile (fracture) and compressive (plastic) behaviour.
Veselý, Selecting a suitable specimen shape with low constraint value for determination of fracture parameters of cementitious composites, Key Engineering Materials Vols. 577–578 (2014) 481–484
Bažant, Analysis of work-of-fracture method for measuring fracture energy of concrete, ASCE Journal of Engineering Mechanics 122(2) (1996) 138–144
Frantík, Reconstruction of a fracture process zone during tensile failure of quasi-brittle materials, Applied and Computational Mechanics 4 (2010) 237–250

School of Science, Sichuan University of Science & Engineering, 643000, Zigong China; 2.
Material and Methods 1.1 Study area The Jinsha River Basin, with an area of 3.4×104 km2 and a length of 2316 km, was chosen in this study.
Journal of Hydrology.
Journal of Sichuan University of Science ＆ Engineering Vol.25. (2012), P.1-4 (in Chinese) [4] Ghanbarian-Alavijeh B, Millán H.
Water Science and Engineering.

Design of Ultrasonic Ranging Alarm Device Based on SN8P2501B Panfeng Zhang 1, 2, a, Lingkun Ma 1,b and Huizhen Li 1 1College of Electrical Engineering Shaanxi University of Science and Technology Xi’an, Shaanxi, 710021, P.R China 2.Shaanxi Research Institute of Agricultural Products Processing Technology Xi’an, Shaanxi, 710021, P.R China azhangpanfeng@sust.edu.cn, b xyzpf3579@163.com Keywords: ultrasonic; temperature compensation; SN8P2501B; 555 time-base circuit Abstract.
Error Analysis.The above design is used to test at normal temperature, the maximum distance is not less than 3 meters, error analysis shows that the maximum relative error is limited to 1.0%, using oscilloscope to observe waveform , we can find that the reason of the error is related with the temperature, humidity, material surface and test ultrasonic transmitter power.
Acknowledgment This paper was supported by the National Natural Science Foundation of china (No. 60972152) and xian’yang city science and technology plan project (No. 2012k16-09), thanks here.
Journal of Hunan Institute of Engineering (Natural Science Edition), Vol 6, pp.13-15,Febrary 2011 (In Chinese)
(In Chinese) [4] Lijun Ding, Liang Huaand Feng Chen, Sense-measurement System Design for Mobile Robot Using Ultrasonic and Infrared Sensors, Journal of Nantong University(Natural Science Edition), vol. 14. 2008(02): pp.13–17.

However, there is a concern that as gamma rays eliminate microorganisms from the devices during sterilization, it may also change the molecular structure of the materials and significantly affect its intended clinical use.
The alkene group may come from the unreacted starting materials or from the competing radiolytic degradation product [12].
Acknowledgments The authors would like to thank the Advanced Materials Testing Laboratory and the Standards Testing Division of the Department of Science and Technology-Industrial Technology Development Institute for the characterization of specimens.
International Journal Advanced Manufacturing Technology (2016) 83:389–405 DOI 10.1007/s00170-015-7576-2 [7] Formlabs White Paper.
J.,2011, Stereolithographic Processes, pp. 10, Stereolithography, Materials, Processes and Applications, ISBN978-0-387-92903-3.