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Introduction To date, carbon-filled polymer composites are the most used materials for the manufacture of tribological assembly [1].
From the analysis of modern antifriction materials market, it has been found out that one of the main ones is caprolon (PA 6).
Alshennawy, Friction and wear of polymer composites filled by nano-particles: a review, World Journal of Nano Science and Engineering, 2 (2012), 32-39
Geier, Micro-mechanical modelling of Young’s modulus of semi-crystalline polyamide 6 (PA 6) and elastomer particle-modified-PA 6, Computational Materials Science, 50 (2011), 1315–1319
Kuzmin, M.A.Okin, E.A.Kotina, Calculation of thermophysical characteristics of thermoplastic composites with vegetable fillers// Materials Science, 10 (2017), P. 25-29.

The friction between the filled soil and the reinforcement materials can not only transfer to reinforced material tension but also can prevent the development of the soil’s lateral deformation.
When stiffened by pull force, the frictional resistance will prevent the reinforcement material be plucked up.Therefore, as long as reinforcement materials keeping a enough strength and enough friction, the reinforcement of the soil can balance stable.
Consideried the reinforced structure as a whole, the reinforced structure can be regarded as a anisotropy of composite materials.
These materials can be isotropic or orthogonal anisotropic linear elastic material and no destroy limit.The geogrid has a shearing friction with the soil surface in the cutting plane direction,but in normal direction is attached to the grid.
The current safety situation of tailing reservoir in China and preventivem easures.Journal of Safety Science and Technolog.Vol. 21(2009),p. 48.

Construction and Building Materials.
Viscosity-enhancing admixtures for cement-based materials — An overview.
ACI Materials Journal
Science and Technology of Concrete Admixtures.
Construction and Building Materials, 139, 584-593

However, less attention has been given to the machinability of these materials.
Acknowledgements This research is supported by the National Natural Science Foundation of China (No. 50575135 and No. 50475026).
Shen: Diamond and Related Materials, Vol. 12 (2003), pp. 711-718
Traversa: Diamond and Related Materials, Vol. 10 (2001), pp. 786-789
Paulo Davim and Francisco Mata: Journal of Materials Processing Technology, Vol. 170 (2005), pp. 436-440. 0 10 20 30 40 50 60 0.0 0.1 0.2 0.3 0.4 0.5 0.6 Flank wear VB (mm) Cutting time (min.)

Material S-N curve is needed in local stress-strain method.
As to the material of DYB-3 aeronautic cabin glass, the fatigue test is taken under MTS 810-500KN material testing system (uniform amplitude, stress radio=0.1, loading frequency=1Hz, surroundings temperature=20ºC).
Acknowledgements The work was supported by the National High Technology Research and Development Program of China (Project 2009AA04Z406) and the National Nature Science Foundation of China (Project 50975284).
References [1] Wu Guang-ren: The No.1 Institute of China Air Force, Beijing (1998) [2] ZHANG Zhi-lin, YAO Wei-xing, and FU Xiang-jiong: Chinese Journal of Aeronautics Vol. 25(2004), p. 569 [3] ZHANG Zhi-lin and YAO Wei-xing: Journal of Nanjing University of Aeronautics & Astronautics Vol. 36(2004), p. 298 [4] HB3244-3296-79, On-Board Tools , China (1981) [5] China Aeronautical Materials Handbook Editorial Committee: China Aeronautical Materials Handbook Vol.7 , China Standard Press, Beijing ( 2001) [6] C.H.Chien and L.F.
Coffin: Fatigue and Fracture of Engineering Materials and Structures (1998) [7] Neuber: ASME, J.A.M.

Materials Science and Technology, 1983(4): 5
Materials Science and Technology, 2013, 29(8): 937-942
Materials Science and Engineering: A, 2018, 725: 466-478
Materials Science and Engineering: A, 2019, 747: 98-110
Materials Science and Engineering: A, 2019, 744: 46-53

The reasons include the change of crystal phase content and the increase of thickness, the refractive index change between base materials and venner, the variation of porosity between layers of materials and the corresponding changes of base materials brought by repeated sintering [11-12].
Comparison of the transmissivity of In-Ceram ceramics and Cercon all-ceramic materials , Journal of Clinical Stomatology, 23 (2007): 67-69
Comparativ determination of relative transparency of three dental all-ceramic underlayer materials, Journal of Oral Science Research, 21 (2005): 517-519
Part II: core and veneer materials, J Prosthet Dent , 88 (2002): 10-15
Part II: core and veneer materials , J Prosthet Dent, 88 (2002): 10-15

The experimental raw materials include converter slag, chemical reagents (CaO, SiO2, Fe2O3, P2O5), coke powder, nitrogen.
Acknowledgements Presented research was supported by Key R&D Project Self-Funded Project of Hebei Province of China (17214012), Hebei Province Higher Education Science and Technology Research Project(QN2018167), Tangshan Special Metallurgy and Material Preparation Basic Innovation Team Project(17130202D)，and North China University of Science and Technology Doctoral Startup Fund Project (28411099).
Metal Materials and Metallurgical Engineering,2017,45(01):50-54+60
Journal of Iron and Steel Research, 2016, 28(06):31~34
Journal of Materials and Metallurgy, 2003, 2(03):167~172.

Pore size dependence of compressive behavior and energy absorption properties of porous copper Gang Ling Hao1,a, Qiao Ping Xu1,b and Fu Sheng Han2,c 1 College of Physics and Electronic Information, Yan’An University, Yan’An 716000, China 2 Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China aglhao@issp.ac.cn, bxiaoppingxu@126.com, cfshan@issp.ac.cn Keywords: Porous copper; Processing; Compressive behavior; Energy absorption property Abstract.
Experimental The copper particle with a purity of around 99.5% and ordinary commercially carbamide particle (CO(NH2)2) with a purity of around 99% were used as the parent materials, in which the carbamide has two kinds of particle size and shape.
The quasi-static compressive tests were carried out using a Sans/CMT4204 materials testing system at a crosshead speed of 2 mm/min.
Sakai: Journal of the Japan Institute of metals. vol. 71 (2007), p. 7108 [9] T.
Gibson: International Journal of Mechanical Sciences. vol. 43 (2001), p. 681 [11] Y.

Some developed countries began to make research and developed permeable pavement materials from the 1970 s.
After 1990's, it has become a general experience for the developed countries in urban construction by applying permeable materials to replace the traditional materials for building roads [1].
JB10144), Xiamen Science and Technology Plan Project (No.3502Z20110016) and Open Fund of Chinese Academy of Sciences (No.
(In Chinese) [8] Yinding Lin: Journal of Chinese Landscape Architecture Vol. 19 (2003), P. 36-38.
(In Chinese) [11] Min Le, Yupei Yang: Journal of Chinese Urban Forestry Vol. 3 (2005), P. 39-41.