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HDPE, LDPE and polypropylene were the choice of thermoplastics and an optimum combination of materials for the sandwich structure was evaluated using drop-weight experimental set up.
Sandwich structures are lightweight and exhibit the same strength properties as the conventional materials.
Zhigang, A research progress of dent resistance for automobile body panels, Chinese Journal of Mechanical Engineering.
Wilczynski, Potential weight savings versus dent resistance performance of high strength steel body panels, In IBEC Automotive Body Materials (1993) [3] J.A.
Wang, Low velocity impact response of lightweight metal sandwich panel with corrugated core, Materials Research Innovations. 15 (2011) 198-200

Its excellent physical properties are: wide band gap, refractive index, high transmittance of ZnS quantum dots which make it widely applied in electric induced luminescence, nonlinear optical devices, light-emitting diodes, field effect transistors, dielectric filter, dyes, photo catalysis, sensors, and laser, especially in the manufacture of high efficiency solar cell materials[1,2,3].
Semiconductor quantum dot materials have been widely used in optics; electricity; medicine and other fields because of its large optical nonlinearity and fast time response characteristics[4,5,6].
[5] Sladek, J., et al. : International Journal of Solids & Structures 59(2015):79-89
[8] Fang X., et al. : Progress in Materials Science 56.56(2011):175-287
[9] Sheik-Bahae, Mansoor, et al. : Quantum Electronics, IEEE Journal of26.4 (1990): 760-769.

In order to develop materials for special application, doped ZnO films have been fabricated and investigated by many groups.
Bao: Journal of Applied Physics Vol. 98 (2005), p.073524
Yu: Materials Research Bulletin Vol. 40 (2005), p.1104
He: Journal of Crystal Growth Vol. 290 (2006), p.334
Jiang: Applied Surface Science Vol. 245 (2005), p.414

Application of Electrochemical Techniques in the Porosity Assessment of Electroless Coatings Yang Xu1, a, Yong Zou2,b and Tao Luan1,c 1School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China 2Key Lab of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061, Shandong, China axylm163@163.com, b yzou@sdu.edu.cn, c tluan@sdu.edu.cn Keywords: Porosity assessment, electrochemical technique, electroless coating.
Experimental The substrate material used for the preparation of the coatings was mild steel (Q235).
Carroll, Journal of Materials Science, 25 (1990) 4972-4976
Jappes, , Journal of Materials Processing Technology, 169 (2005) 308-313
Kelly, Electrochemical techniques in corrosion science, Marcel Dekker, 2003

In concrete, mineral admixture and pozzolanic material such as fly ash, slag, zeolite, silica, rice husk ash, wood ash, calcite ash can replace the cement , especially, fly ash is the amount of replacement in the concrete because o f its low cost and good performance[1,4,5].
Moisture content of cattle manure is about 35%, solid material is about 65% (including combustible dust).
Journal of Hainan University Natural Science Edition.2010，28（3）：252－256
Journal of Applied Science.2006,6(13): 2840-2842
Development of self thermal insulation block in severe cold area.New building material, 2009，4：34-37

(3) Material is isotropic and the hysteresis effect of ferromagnetic materials was ignored
(4) Use the equivalent surface current to simulate rare-earth permanent magnet materials
As the permeability of ferromagnetic material is far greater than air’s, magnetic line can be seen as closed line along inner and outer lateral surface of retarder.
Journal of Jiangsu University (Natural Science Edition). 2009, 30(3):256-260
Journal of Tsinghua University (Science and Technology). 2004, 44 (10): 1317-1320

Due to the high atomic number of its elements (ZPb =82, ZI =53), it is a material with potential use as an ionizing radiation detector (X and γ rays) [3-5].
Lead iodide polycrystalline undoped samples with and without annealing are prepared from this material.
[8] Gopik.Kasi, Norman.R.Dollahon and Temer S.Ahmadi, Journal of Physics D:Applied phys, 40 (2007) 1778
[10] D.S.Bhavasar, K.B.Saraf, Journal of Materials Science ,vol.14,No4 (2003) [11] Richard W.Schaeffere, Monica Ardelean, Power Diffraction 16 (2001) 16
[13] B.D.Cullity, Elements of x-ray Diffraction, 2nd edition, Addison Wesley published Company, USA, 1978.[14] D.Hull, D.J.Bacon, Introduction to Dislocations, 3ed edition, International Series on Materials Sciences and Technology, Vol. 37, Pergamon Press, 1985.

During the course of machining, sharp edges on ceramic materials are prone to damage by chipping or flaking when diamond grinding wheel near the edge.
In fact, there is lots of micro-crack and micro-clearance existing in the ceramic material.
Experimental Acoustic emission is an instantaneous elastic wave engendering for material deformations.
Acknowledgment This work is supported by National Natural Science Foundation of China (Grant No: 51075309).
Gant: International Journal of Refractory Metals & Hard Materials, Vol. 19, (2001), p. 293 [5] F.Petit, V.Vandeneedea, F.Cambier: Journal of the European Ceramic Society Vol. 29, (2009), p. 2135 [6] T.

Component and Material Characteristics.
Figure 1 shown that the steel frame structural system of collector, structural materials were steel and section were angle steel and square steel, among the rectangular frame and the lower vertical pillar selected angle steel.
The materials of collector steel structure selected for Q345A steel, and the strength indexes of steel were yield strengthand tensile strength .
Journal of Solar Energy, 2009(7)
[4] Alva, LH; Gonzalez, JE; Dukhan, N.Initial analysis of PCM integrated solar collectors [J].Journal of Solar Energy Engineering. 2006, 128(2)

Experimental Materials.
It enables quick and simple ranking of materials by surface hardness [11].
The main value of this test method is the relative ranking of materials.
Oleiwi, A Study Of Wear Rate Behavior Of Polyester Reinforced By Silica ( SiO2 ) Particles, The Iraqi Journal For Mechanical And Material Engineering. 10 (2010) 108–118
Tall, Preliminary Study of the Influence of Post Curing Parameters to the Particle Reinforced Composite’s Mechanical and Physical Properties, Materials Science. 18 (2012) [13] K.