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Introduction (a) Schematic of off-axis cutting (b) Two-dimensional off-axis cutting Fig. 1 Off-axis laser beam cutting realized by radial motion of the lens Laser beam machining is widely used in many industries because a high energy laser beam can not only cut almost any materials without contact with the work-pieces, but can also machine complex geometrical profiles and make miniature holes on the material.
Yadava, Laser beam machining--A review, International Journal of Machine Tools & Manufacture. 48 (2000) 609-628
Manna, Laser processing of materials, Sadhana. 28, Parts 3 & 4, (2003) 495–562
Nikumb, Effect of focus position on informational properties of acoustic emission generated by laser-material interactions, Applied Surface Science. 253 (2006) 1122-1129
Noor, Optimization of laser deep-hole drilling of inconel 718 using the taguchi method, Journal of Material Processing Technology. 37 (1993) 741-757

But as a kind of electrical insulator materials, the epoxy resin has no shielding function for electromagnetic waves.
Electronic materials and processes handbook.
Advances in composite materials for thermal management in electronic packaging.
Journal of Applied Polymer Science, 109, (2008), 3679-3688 [7] HE W Q, WANG H, WANG W C, et al.
Materials Protection, 39(12), (2006), 19-22 (in Chinese) [9] ZHANG T C, TU X W, WANG X, et al.

The values of σDC obeyed a percolation power law with MWNTs concentration threshold 0.10 mass fraction. 10 -2 s/cm conductivity for 0.15 mass fraction MWNTs loading indicated that the composites could be used as lightweight electrostatic shielding materials. 1.
Materials Multi wall carbon nanotubes (MWNTs) was supplied by Shenzhen Nanotech Port Co.
DC volume resistivity was measured by four-contact scheme, using EST991 Electric and Electrostatic Shielding Materials Volume Resistivity Meter. 3.
Materials Science and Engineering B.Vol.141( 2007), p.61-70 [3] Stauffler D, Aharony A.
European Polymer Journal.

Study on the Microstructure and the Mechanical Properties of TA2 Xiaodong Hu 1, 2, a, Sen Zhang 1, Yong Zhang 1, Yajiang Li 2, b 1 College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China 2 Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials; Ministry of Education; Shandong University, Jinan 250061, China a huxdd@sohu.com, b Yajli@sdu.edu.cn, Keywords: TA2, welding, metallographic structure, microhardness, Abstract：The microstructure and the mechanical properties of welding joint with the material of TA2 have been studied in this paper with the specimens made with the method of argon-arc welding.
Conclusions have been obtained as follows: The organizations of the welding joint include base material, recrystallization zone, overheated area, fusion zone and the weld zone; the hardness tendency of the weld joint is depicted as M-shape with the softest point located at the center, and the hardest is located at the overheated zone; the annealing treatment can enhance the weld joint hardness mainly at the center, and the hardness of other zones change little.
B Heat-affected zone microstructure analysis The heat affected zone of weld joint with the material of TA2 includes incomplete recrystallization and overheated zone.
Conclusions The organization and the mechanical property of butt weld seam welded with the material of TA2 have been analyzed in this paper, and the conclusions have been obtained as follows: (1) The organization of the heat affected zone includes base plate, recrystallization zone, overheated zone, fusion zone and weld seam zone with the hardness distribution as M-shape during the weld zone. (2) The hardest position locates in the overheated zone where the lath β-phase grains are precipitated in coarse grains of α.
Wang: Journal of Materials Science & Technology, Vol. 21(2005) No.3, P.357.

The results show that selected N2 gas sprayed and increasing the gas velocity would be raise adhesive strength of the spraying coating, and provides theoretical evidence for choice of spraying materials and control in HVAS.
Acknowledgements This work was financially supported by the Science and Technology of Chongqing Municipal Education Commission funded project (KJ090704, KJ100722); and the Key Science and Technology Research Program of Chongqing (CSTC, 2009AB3234), Chongqing University Innovation Team Project (KJTD201019).
Development of automatic high velocity arc spraying process and new coating materials.The 4th Asian Thermal Spray Conference,2009,10,Xi’an,China
Journal of Thermal Spray Technology, 2000(2) [5] ZHU Zi-xin, XU Bin-shi, MA Shi-ning, et al.
Chinese Journal of Nonferrous Metals, Vol.12 (2001), p.1083-1088, in Chinese

The crystallizing phases such as cordierite, mullite, corundum and berlinite among others, are characterized by electronic, optical, thermal and chemical properties, enabling them to be utilized as substrate and packaging materials, as well as insulating materials in high-frequency electronics.
Marghussian: Optical Materials, Vol. 34 (2012) p. 596 [2] H.
Chae: Japanese Journal of Applied Physics, Vol. 50 (2011), p. 09NF01-05 [3] W.
Aboud: submitted to IOP conference series: Materials Science and Engineering (2013) [5] T.
Third Arab Congress on Material Science, Cairo-Hurghada, Egypt (2003), Part 2, p. 15

Materials and Methods Samples were collected using bottom trawl net in the Bohai Bay from April to September 2009.
Cao: South China Fisheries Science. vol. 10(2014), P. 57-61
Fisheries Science. 33(2014), P. 142-146
Menezes: Journal of Applied Ichthyology. vol. 28(2012), P. 156-159
Ndimele: Asian Journal of Agricultural Sciences. vol. 2(2010), P. 174-179.

Mechanical Properties of Dental Porcelain Discs by Different Producing Methods Haitao Wang1, Yihong Liu1a, Yong Wang1, Huijuan Chen2, Yan Qiu3, Yiwang Bao3 1 Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing 100081, PR China 2 Beijing University of Chinese Medicine Dongfang Hospital, Beijing 100011, PR China 3 State Key Lab of Green Building Materials, China Building Materials Academy, Beijing 110024, PR China a kqliuyh@163.com (corresponding author) Keywords: Porcelain; Mechanical property Abstract.
In commonly, the main chemical composition of dental porcelain is silicate based glasses, belonging brittle materials [4,5].
A comparison between materials can only be achieved if specimen preparation occurs consistently between test centers and therefore these results appear to have implications for the laboratory testing of materials [9].
Materials and Experiments Dental porcelain discs.
Journal of Dentistry, 30(2002), 161-169

Chinese Journal of Geotechnical Engineering (in Chinese), 1996, 18(1): 95-97. ].
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In recent years, electrospinning nanofibers materials were found to show unique properties suitable for use as catalysts.
Materials Science and Engineering. 131 (2006) 147-155
Materials Science and Engineering. 146 (2008) 212-215
Journal of Physical Chemistry B. 108 (2004) 570-574
Materials Letters. 64 (2010) 2692-2695