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All mentioned achievement has provided sufficient data and theory base for further study, however, most of these studies have followed the research path of cable materials, and also have little focus on partial discharge.
CSEE Journal of Power and Energy Systems, 2019, 5(1): 73-81
Journal of Nanomaterials, 2013, 2013(1): 1
Electrical Conduction and Carrier Traps in Polymeric Materials[J].
Materials, 2017, 10(1): 90.

Different material models produced drastically different results.
The material constants used in the cyclic plasticity theory can be seen in Ref. [1].
The decay of the wave depth rate is associated with the cyclic plasticity behavior of the material.
Senuma: ASME Journal of Lubrication Technology Vol. 103 (1981), p. 26 [3] K.L.
Li: Journal of Sound and Vibration Vol. 293 (2006), p. 830 [8] X.S.

Wang Dan, Chen Dong, Wang Pan, etc. studied the influence of adhesive chemical materials on the tensile failure of CFRP single - lap structures.
Experiment Materials and Specimen Preparation This paper selects the prepreg carbon fiber/epoxy resin composite laminate produced by Guangwei Company in Weihai City, China.
Araldite®2015 Material Properties Properties Araldite®2015 E11/MPa 1850 G12,G13/MPa 560 S/MPa 28.12 ρ/(T/mm3) 25.61 Gnc/(N/mm) 0.43 Gtc,Gsc/(N/mm) 4.70 E11/MPa 1850 G12,G13/MPa 560 This paper fabricates and tests bonded structure specimens in accordance with ASTM standard D5573 - 99 of the American Society for Testing and Materials.
For composite materials, this is attributed to the significant structural randomness of fibers, which encompasses extensive random variations in fiber size, position, and shape.
Compared with the traditional bulk curing process, this local pre-curing technology does not require changing the joint geometry or adding extra materials.

Work material adopted is die & mould steel SKD11 with hardness HRC61.
Acknowledgement The work is supported by the National Natural Science Foundation of China (No.50935001, No.U0734007), Important National Science & Technology Specific Projects (2009ZX04014-041) and National Basic Research Program of China (2010CB731703).
Ray: International Journal of Machine Tools & Manufacture, Vol. 48 (2008), p.184 [2] M.
ASME Journal of Dynamics System, Measurement and Control, Vol. 120 (1998), p.22 [8] E.
ASME Journal of Dynamics System, Measurement and Control, Vol. 120 (1998), p.31 [9] Y.

Mechanical Behaviour of Gas Tungsten arc Surface Modified Composite Layer on Mg Alloy AZ31 with SiCp and Aluminum Haiyan Jiang, Wenbin Ding, Xiaoqin Zeng, Dehui Li, Shoushan Yao School of Materials Science and Engineering, Shanghai Jiao Tong University, Huashan Road, No. 1954, Shanghai 200030, China E-mail: dingwb@sjtu.edu.cn, Telephone: +86-21-62932549, Fax: +86-21-62932113 Keywords: AZ31 alloy, Gas tungsten arc, surface modification Abstract.
Introduction Magnesium alloys are gaining increasing importance as structural materials for applications where weight reduction is critical owing to their low densities (from 1.75 to 1.85 g/cm 3) and high stiffness-to-weight ratio, and these applications include automotive, industrial, materials handling, and aerospace equipment where there is an obvious need for lightweight materials [1, 2].
Munitz, Journal of Material Science Letters. 18 (1999) 853
Welding Journal. 83 (2004) 203
Materials and conditions Yield bend strength (MPa) Ultimate bend strength (MPa) Elastic modulus (GPa) As-received AZ31 163.2 406.4 41.2 GTA surface modified layer with AZ31 Al + SiC welded by I=150A, v=200mm/min. 159.3 403.1 39.3 GTA surface modified layer with AZ31 Al + SiC welded by I=150A, v=150mm/min. 157.6 398.7 38.1

Introduction Nanocomposites include a class of polymeric materials with inorganic substances of nanometer dimensions, such as clays and other minerals, are dispersed within a polymeric matrix [1].
The different molecular weight of PA6 had influence on the rheological properties of materials.
Pavlidou, C.D.A Papaspyrides: Progress in Polymer Science Vol. 33 (2008), p. 1119
Passador: Materials Science Forum Vols. 775-776 (2014), p. 383
Domka: Journal of Physical and Chemistry of Solids Vol. 65 (2004), p. 441

The model developed allows for the simulation of the following mechanical properties exhibited by porous brittle materials: (1) degradation of elastic moduli and softening of material strength due to damage accumulation; (2) inelastic deformation due to growth of micro-cracks and evolution of micro-pores, and its effect on material strength; (3) effect of pore-fluid pressure on material strength.
Actually, the materials are divided into two parts, damage evolution region and complete destroyed region.
This characteristic may be related to the material strength of granite.
Journal of Geophysical Research, Vol.76, No.32, 7947-7962, 1971
Dissertation, Hefei: University of Science and Technology of China, 2005.

In recent years, with the building being higher, the wall materials are received increasing attention.
As a new kind of energy saving building material, foam concrete is widely used in wall materials and other heat insulation materials due to its good thermal properties.
Experimental Materials.
Advanced Materials Research374(2011), p.1523-1526
[6] Qiang Wang,Peiyu Yan.Characteristics of hydration products of steel slag[J].Journal of the chinese ceramic society38(2010), p.1731-1734.

Introduction Among cellular materials, aluminum foams are in attention because its provides a unique combination of properties such as very low density, high energy absorption under static and dynamic compressions, sound absorption and flame resistance [1].
Materials and Method Aluminum powders with particles size <35 um were mixed with spherical carbamide ((NH2)2CO) granulates with range of 1–5 mm sizes in a ball mill for 1 h according to the composition ratio listed in Table 1.
Simančík, Metallic foams – ultra light materials for structural applications, Nźynieria Materiałowa, 5(5) (2001) 823–828
Dhara, Cellular metals and ceramics for defence applications, Defence Science Journal, 61(6) (2011) 567–575
Higashi, Processing of cellular magnesium materials, Advanced Engineering Materials, 2 (2000) 184-187

The research and materials are rare about natural gas downhole choke flow numerical calculation.
Science press, Beijing, China, 2001, p.15-27
Journal of Petroleum Science and Engineering, Vol.39 (2003), p. 99-116
Energy absorption of structures and materials, Chemical Industry Press.
Simmonds: Journal of Applied Mechanics, Vol.70(2003), p.799-808