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The most effective way to reduce the weight of on-board wires is to improve the physicomechanical characteristics of conductive materials [1].
Wang, Mechanisms for Ce-induced remarkable improvement of conductivity in Al alloys, Journal of Materials Research. 32, 3 (2017) 566-574
Wang, Microstructure and mechanical properties of rare-earth-modified Al−1Fe binary alloys, Materials Science and Engineering. 632 (2017) 62-71
Kaibyshev, Effect of the thermomechanical processing on microstructure and properties of an Al-Ce alloy, Materials Science Forum. 706-709 (2012) 361-366
Voroshilov, Application and Research Twin Roll Casting-Extruding Process for Production Longish Deformed Semi-Finished Products from Aluminum Alloys, Materials Science Forum. 918 (2018) 13-20

Materials Science and Engineering: A, 2013, 559: 496-505. https://doi.org/10.1016/j.msea.2012.08.131
Journal of Materials Science & Technology, 2013, 29(5): 439-445. https://doi.org/10.1016/j.jmst.2013.02.009
Materials Science Forum, 2018, 929: 56-62. doi:10.4028/www.scientific.net/MSF.929.56
Materials Science and Engineering: A, 2014, 611: 223-233. https://doi.org/10.1016/j.msea.2014.05.088
Materials Science and Engineering: A, 2015, 644: 425-430. https://doi.org/10.1016/j.msea.2015.07.076

Over the past several decades, a variety of cumulative damage theories have been developed for metallic materials.
An anisotropic damage model of quasi-brittle materials and a two-scale damage model for HCF of metallic materials are studied by Desmorat, and numerical simulation method was obtained[13,14].
Fig.1　The simplified steady stress-strain curve for metallic materials.
[7] Chaboche JL, Lesne PM: Fatigue and Fracture of Engineering Materials and Structures,1988, 11(1):1-7
[23] Gao Zhentong, Liu Zhijing, Jia Guorong, Handbook of fatigue properties of Aeronautical Materials (Peking：Beijing Institute of Aeronautical Materials,1981(In Chinese)).

So this results in the lack of intellectual property rights of self- development performing materials of near space airship, and the scientific test standard and testing methods of NSA envelope have not formed.
Advanced Materials Research, 2011, 217: 158-162
Applied Mechanics and Materials, 2014, 477: 34-38
Tear resistance of orthogonal Kevlar PWF-reinforced TPU film [J].Chinese Journal of Aeronautics 2011;24:113-118
Research progress and requirement analysis of envelope materials for near space airship [J].

Permeability coefficient of various materials used in the calculation based on reference hydro-geological data and reference values.
Wu, Penalty function element-free method for solving seepage field of embankments, Journal of Hohai University (Natural Sciences), 36 (2008) 44-48
Sun, Analysis of the steady seepage field with free surface using element-free Galerkin method, Journal of Xi¢an Shiyou University( Natural Science Edition), 22 (2007) 92-95
Lv, Study on Seepage Calculation Model for the Concrete Face Slab with Cracks, Journal of Basic Science and Engineering, 17 (2009) 668-674
Chai, Numerical analysis of unsteady seepage through fracture network in rock mass simulated by the Monte–Carlo method, Journal of Basic Science and Engineering, 13 (2005) 81-86.

Materials and Methods Forsterite powder was prepared by solid-state reaction using magnesium oxide (MgO; Merck, 97%) and talc (Mg3Si4(OH)2; Sigma-Aldrich, 99%) as the starting materials.
Kharaziha, Mechanically activated crystalization of phase pure nanocrystalline forsterite powders, Materials Letters. 62 (2008) 4306-4309
Hasselman, Evaluation of KIC of brittle solids by the indentation method with low crack-to-indent ratio, Journal of Materials of Science Letters. 1 (1982) 13-16
Emadi, Synthesis of nanocrystalline forsterite (Mg2SiO4) powder by combined mechanical activation and thermal treatment, Materials Research Bulletin. 45 (2010) 388-391
Pinkerton, Porous structures fabrication by continuous and pulsed laser metal deposition for biomedical applications, modeling and experimental investigation, Journal of Materials Processing Technology. 211 (2011) 602-609

La Via Journal of Crystal Growth 310, 971 (2008) ,[] M.
La Via, Journal of Computational Physics 227, 1075 (2007). ].
La Via, Material Science Forum 679, 358 (2011) ].
Matsunami, Journal of Applied Physics 75, 850 (1994). ,[] M.
La Via, Surface Science 603, 2226 (2009) ,[] M.

Few constructive models that can involve intelligent materials are analyzed to establish the advantages in usage of shape memory elements mechanical implementation.
Equipment or machinery used in the rehabilitation of limb joints of the human body are now developed by the mechatronics, a branch of engineering that combines mechanics and electronics, which must be added due to medical applications, science such as biomechanics, physiology and materials science.
The main goal of intelligent materials is to reduce the weight and volume of the associated machine components.
Nejneru, Internal friction phenomena at polymeric and metallic shape memory materials.
Scandinavian Journal of Medicine and Science in Sports. 2 (1992) 100–118

Liner elastic material parameters Materials Elastic modulus [E/Mpa] Poison’s ratio [µ] CTE [α1 ppm/K] Si ROIC InSb chip Indium bump underfill 163000 409000 10600 9000 0.28 0.35 0.45 0.3 2.50 5.04 33.00 26.00 InSb chip, Si ROIC substrate and underfill are all considered to be linear elastic materials.
Patrick Mccluskey: Journal of Electronic Materials, Vol. 38(9) (2009), p.1855-1859
Ledbetter: Materials Science and Engineering A, Vol. 252 (1998), p.139-143
Walsh: Materials Science and Engineering, Vol. 102(2) (1988), p.227-236
Sun: Applied Mechanics and Materials Vol. 33-34 (2010), p.207-211.

Table 1 Physical and mechanical properties of materials [8].
Wenhui Liu, Zhigang Chen and Datian Cui, Advanced Materials Research, 291-294 (2011) 1057-1061
Cizelj, Computational Materials Science, 39 (2007) 817-828
Mishra, Mechanics of Materials 41 (2009) 506-519
Xiaohua, Rare Metal Materials and Engineering, 43 (2014) 257-263.