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Some experiment [1] have shown that under certain conditions, the yield strength of structure increased by a specified number of repeated cyclic loading effects, the strain hardening index of material decreased and the fatigue strength of material increased.
So the use of shakedown theory in the design of gear can effectively improve the utilization of materials, and can reduce weight and improve fatigue life of gears under the same condition.
The parameters of the gear model are as follows: the modulus m=3.5, the tooth number z=36, the pressure angle ,the elastic modulus of gear material , , the Poisson ratio , the shear yield strength , the load distribution factor , the speed of gear is 2000r/min, and the lubricating oil is mineral oil.
Acknowledgments This work was supported by the National Natural Science Foundation of China (No. 50875214, 10672134, 11072196) and Graduate starting seed fund of Northwestern Polytechnical University (No.
Keer: Journal of Tribology Vol. 115 (1993), p. 227 [5] D.L.

When repairing facilities, attentions need pay on anti-filtration drainage ability of the geosynthetics material. 3.4 Reinforcements on gates and hoisting devices Subjected to the technological and economic condition in the past, the gates in sluices are mostly made by concrete and fixtures, which approach its lifespan.
If the concrete denudes without exposure of coarse aggregates, we apply the hydraulic powered stone mill; if the concrete denudation is serious, we flush the denudation surfaces first, and then mend the surfaces with mending materials.
Choosing the mending technology and materials need to consider the technical, economic and environment factors according to the erosion environment the concrete in and the concrete structure characteristics.
Journal of Three Gorges University (Natural Sciences Edition), 2005, 27(2): 119-122

Theoretical Foundations of Correct Wavelet-Based Approach to Local Static Analysis of Bernoulli Beam. // Accepted by the Scientific Committee of CEABM 2014 and will be published in journal "Applied Mechanics and Materials"
Correct Wavelet-based Multilevel Discrete-Continual Methods for Local Solution of Boundary Problems of Structural Analysis. // Applied Mechanics and Materials Vols. 353-356 (2013), pp. 3224-3227
Wavelet-based Multilevel Discrete-Continual Finite Element Method for Local Plate Analysis. // Applied Mechanics and Materials Vols. 351-352 (2013), pp. 13-16
Wavelet-based Multilevel Discrete-Continual Finite Element Method for Local Deep Beam Analysis. // Applied Mechanics and Materials Vols. 405-408 (2013), pp. 3165-3168
[5] Akimov P.A., Mozgaleva M.L.: Correct Wavelet-based Multilevel Numerical Method of Local Solution of Boundary Problems of Structural Analysis. // Applied Mechanics and Materials Vols. 166-169 (2012), pp. 3155-3158

In such complex harsh working conditions, the blades will inevitably produce cracks, wear, damage and even lead to scrap, which will seriously affect flight safety. [1] In recent years, it has become the major research emphasis at home and abroad on improving the mechanical properties of materials by the surface modification techniques to process materials or components without changing the base material. [2] Through plastic deformation ultrasonic shot peening (USP) and laser shock peening (LSP) are effective technical methods to improve fatigue life, which can generate residual compressive stress, fabricate grain-refinement surface.
Material Science Engineer， 2001， A298: 296-299 [5] Michael R H， Adrian T D，Anne G D et al.
Advanced Materials & Processes,2003,161(8),65-71 [6] Universal Technology Corporation.
High Cycle Fatigue(HCF) Science and Technology Program 2002 Annual Report[R].2003 [7] Richard D T， David F L.
Journal of Laser Applications, 1998, 10: 265~279

He indicated that the smart and intelligent materials are catching the interest of the researchers in materials science, electronics and computer engineering, as well as product designers and textile and clothing makers, at a fast pace.
Chan Vili and Yvonne Y.F. [2] investigated Smart aspects of textiles based on shape memory materials particularly for enhancing the aesthetics of woven interior textiles.
Shape memory alloy and shape memory polymer have been modified to allow the materials to be incorporated into the woven structure.
Performance of Raw Materials and Specifications of Smart Thermostat Woven Fabric Raw materials for Smart Thermostat woven fabric include two kinds of fibers, one is cotton fiber, the other is thermostat viscose fiber researched and developed by Beijing dragon Institute of Science and Technology, China.
References [1] Sastry Usha Rashmi Bhaskara: Technical Textiles International, Vol. 13(4) (2004), p. 31 [2] Chan Vili and Yvonne Y.F. : Textile Research Journal, Vol. 77(5) (2007), p. 290 [3] Khalil S., Yuan J. and El-Sherif, M.: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5270 (2004), p. 38 [4] Cherenack Kunigunde, Zysset Christoph and et al.: Advanced Materials, Vol. 22 (45) (2010), p.5178

Experimental procedure The test material was based on 6061 aluminium alloy containing different amounts of Si =0,4 and 0,9%, and Mg=1,2 and 0,8%, to obtain an Mg/Si ratio of 0.3 and 1, respectively.
The reference material were specimens cut out from a φ330mm ingot cast under industrial conditions, characterised by the chemical composition given in Table 1.
The content of silicon, magnesium and copper was similar to the material cast under laboratory conditions, but the industrial ingot contained much less iron.
Acknowledgements This research was supported by Polish Ministry of Science and Higher Education under Grant No.
Hamerton; Materials Science and Engineering A304-306 (2001) 612-616 [4] M.Warmuzek, J.Sieniawski, K.Wicher, G.Mrówka; Journal of Materials Processing Technology 175 (2006) 421-426 [5] S.N.Samaras, G.N.Haidemenopoulos; Journal of Materials Processing Technology 194 (2007)63-73 [6] P.Liu, T.ThorValdsson, G.L.Dunlop; Mater.Sci.Technol. 2 (1986) 1009-1018 [7] T.Turmezey; Mater.Sci.Forum. 13-14 (1987) 121-132 [8] S.Zajac, B.Hutchinson, A.Johansson, L.O.Gullman; Mat.Sci.Tech. 10 (1994) 323-333

Materials Review. 25 (2011) 118-121
Journal of Materials Processing Technology. 160 (2005) 128-137
Materials Review. 31 (2017) 66-71
Welding Journal. 53 (1974) 203-214
Journal of Materials Heat Treatment, 39 (2018) 113-118

Ammonia gas sensor based on chitosan biopolymer Devi Shantini Chandrasakaran1,a, Irwana Nainggolan1,b*, Tulus Ikhsan2,c, Mohd Nazree Derman1,d 1School of Material Engineering, Universiti Malaysia Perlis 02600 Jejawi, Arau, Perlis, Malaysia 2Physics Department, Faculty of Mathematic and Natural Science, Universiti of Sumatera Utara, Medan 20155, Sumatara Utara, Indonesia ashantini_87@yahoo.com, b*irwana@unimap.edu.my, ciksan@unimap.edu.my, dnazree@unimap.edu.my Keywords: Chitosan, electrochemical deposition, ammonia Abstract.
Chitosan film was selected as a sensing material for ammonia detection in this study.
However, there was no report stating that chitosan film being used as the sensing material for ammonia gas detection.
Du, One-step electrochemically deposited interface of chitosan – gold nanoparticles for acetylcholinesterase biosensor design, Journal of Electroanalytical Chemistry. 605 (2007) 53-60
Landry ,James: Infrared Spectroscopy in Conservation Science, Scientific tools for Conservation, The Getty Conservation Institute Los Angeles, 1999, p. 93-98.

The higher quality FRP materials are now available in shapes and forms more attractive for civil engineering constructions.
Such materials are expected to substitute composites with organic matrix as epoxy, unsaturated polyester or phenol resins.
Bank: Composites for Construction: Structural Design with FRP Materials, John Wiley & Sons Ltd., Chichester (2006)
Melcher: Design limit state: Reality or (science) fiction?
Prokeš, J.: Fibre reinforced composite materials with alkali activated matrix, In Proceedings of the 11th International Conference of Research Institute of Building Materials “Ecology and New Building Materials and Products” held in Telč, VUSTAH Inc., Brno (2007), pp. 282-285.

Pancholi: Materials Science and Engineering: A.
Holmedal: Journal of Materials Processing Technology.
Koç: Materials & Design.
Boumaza: Materials Characterization.