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To ensure the operational safety of unique buildings and structures, we studied the change in the structural properties of materials from unfavorable operating conditions, long-term, beyond design-basis static loads, high-intensity dynamic effects, compliance of the support contours and the possibility of local damage and from the failure of cables of the structures under study.
Razzakov, Modeling of stage of construction end operation of unique large-span structures, Modeling and methods of structural analysis JOP Conf Series: Journal of Physics: Conf: Series: 1425(2020) 012100, do,: 10.1088/1742-6596/1425/1/012100
Axmadiyarov, Research of trailing coverings of wide-span unique buildings by the modelling method, European Sciences review Scientific journal Vienna. 5-6 (2018) 275-276
Meek John, Xia Xiaoyan, Computer shape finding of form structures, int.Journal of Spase Structures.
Solovev, Construction of a Generalized Fatigue Diagram of Metallic Materials, Materials Science Forum, Vol. 945 (2019) 563-568 [Online].

By using this nanosecond pulse power supply, we fabricated some micro structures showed as Fig.8 in following condition: fabricating voltage is 6V, 0.6mol/L NaNO3 solution, duty ratio is 1:3, spindle revolving speed is 1200rpm, parts material are SUS304.
Acknowledgement This research was sponsored by the National Natural Science Foundation of China (51105080), Guangdong Natural Science Foundation of China (S2011040003991), Doctor Start-up Foundation of Guangdong University of Technology (113004).
Journal of South China University of Technology (Natural Science), Vol.30 (2002) No.01, P.6
Russian Journal of Electrochemistry, Vol.30 (1994) No.4, P.443
Journal of Materials Processing Technology, Vol.149 (2004) No.1-3, P.426

Materials and methods The main materials and reagents.
Tappi Journal.1989, 72(3): 169~175
Tianjin: Tianjin university of science and technology.2008.
Chinese journal of paper making.2009,24( 1):46~50.
Chinese journal of paper making.2007,22(2):86-89.

The participants enjoyed the material development in the field of materials science and materials processing technologies.
This volume presents recent advances in the field of materials science and materials processing technologies.
Statement of Peer Review All papers published in this volume of "Materials Science Forum" have been peer reviewed through processes administered by the proceedings Editors.
Pan Jisheng, Institute of Materials Research and Engineering/ National University of Singapore (NUS), Singapore Contact Chair Ms.
SungCheal Moon, Korea Institute of Materials Science (KIMS), Republic of Korea Prof.

By validation, we can draw the conclusions: when the non-homogeneous material parameters are degenerated (), the crack-tip higher order fields for FGMs shells are the same as the homogeneous shells.
Acknowledgements The research is supported by the National Natural Science Foundation of China (No.11172332, No.90305023) Reference [1] Delale .F. and Erdogan.
F.: Journal of Applied Mechanics Vol. 50 (1983), p. 609 [2] Liu Chuntu, Jiang Chiping: Fracture Mechanics for plates and shells (Defense Industry Press,Beijing,2000)
Reddy: International Journal of Solids and Structures Vol. 44 (2007), p. 2036 [5] Y.Dai, L.
Zhang, S.M.Li, J.F.Liu, X.Chong: Science China Vol. 8 (2012), p. 852

Photonic band-gaps in porous silicon based mirrors with an ellipse profile refractive index Shuanming Li 1, a, Furu Zhong2,b ， Zhenhong Jia 3 and Min Tian 4 1, 2, 4 College of Information Science and Technology, Shihezi University, Shihezi 832003, China 3 College of Information Science and Engineering Xinjiang University, Urumqi 830046, China alsm_inf@shzu.edu.cn , bzhfuru@163.com Keywords: Porous silicon, photonic crystals (PCs), ellipse refractive index.
Such materials have many applications such as omnidirectional mirrors [1-2], biological molecules detection [3] and has excellent thermal and mechanical properties, and it is compatible with the silicon-based microelectronics technology.
Saldaña: Journal of applied physics Vol.100, (2006), 044911
[2] J.O.Estevez, J.Arriaga, A.Méndez Blas and V.Agarwal: Journal of applied physics Vol.93, (2008), 191915

Pyroelectric materials have been used in the conversion of thermal energy to electric energy.
The responses were proportional to the temperature variation rate in the PZT pyroelectric materials.
Taroni: IEEE Sensor Journal Vol. 3 (2003), p. 212 [5] E.
Nitsche: Journal of Applied Physics Vol. 37 (1966), p. 510 [6] A.
Chang: Sensors and Materials Vol. 22 (2010), p. 417 [10] V.

Efficiency of application of reinforcing construction made of composite materials includes not only increased corrosion resistance, but also better compatibility of materials in strength and deformation properties.
Visnap, The Use of Reinforcing Rod in the Products of Fiber Foam Concrete, Construction materials. 7 (2015) 52-54
Thesis for a Candidate Degree in Technological Sciences.
Mechanical Properties of Fiberglass Reinforcement with Concrete Cohesion Bond, Mechanics of composite materials. 4 (2014) 641 - 654
[9] Md Azree Othuman My din, Sara Soleimanzadeh, "Effect of Polypropylene Fiber Content on Flexural Strength of Lightweight Foamed Concrete at Ambient andelevated Temperatures", Advances in Applied Science Research Journal, Pelagia Research Library. 3 (2012) 2837-2846

Materials and methods The test materials.
Chen: Chinese Journal of Veterinary Science Vol. 24 (2004), p. 515-517 [2] T.Y.
Holley: Journal of Environmental Quality Vol. 32 (2003), p. 383-392 [3] W.P.
Chen and J.L .Liu: Environmental Science Vol. 25 (2004), p. 105-108 [4] H.M.
Gu: Journal of Ecology and Rural Environment Vol. 24 (2008), p. 69-73 [5] S.Q.

However, the hard machinability of titanium alloy material is crucial for its further applications.
The main reasons are as follows: (1) The poor thermal conductivity of the material leads to the sharply rising temperature in the cutting zone, and the temperature on the tool face can even reach 1000°C or more. (2) Titanium alloys can maintain its high strength at high temperature which may lead to a stubborn cutting resistance at higher cutting speeds. (3) The small tool-chip contact area usually will cause a highly concentrated stress and heat generation on the tool nose. (4) Titanium is easy to react with tool materials under a high cutting temperature[2].
Acknowledgements This research is supported by the National Natural Science Foundation of China (Nos. 51375011, 51275302), the Natural Science Foundation of Jiangsu Province (No.
, International Journal of Refractory Metals and Hard Materials, 17 (1999) 275-282
[7] Pu J-C, Wang S-F,Sung JC, High-temperature oxidation behaviors of CVD diamond films, Applied Surface Science, 256 (2009) 668-673.