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In this case, one of the promising areas is the development of wear-resistant polymer composite materials, to improve the antifriction properties of which nanoscale additives are used [1, 2].
This method of modeling the stress-strain state during contact interaction extends to two-phase materials used as coatings in heavily loaded friction units.
Avdeychick et al, Nanocomposite Engineering Materials: Experience in Development and Application / Ed.
Journal of solids and structures Vol. 44, 11 (2007) 3756-3772
European Mechanical Science, Vol. 2, 2 (2018) 68-75

Introduction There are two measures to enhance the resistance of protective engineering, the first one is adopting advanced structure system, and the second one is developing new protective materials.
Using new compound materials and rational structures has become the key task in current research to improve the resistance both in domestic and abroad.
Journal Southeast University , 1991 ,21 (1) :1-7.
Size effect on compressive strength of PRC [J]．Journal of China University of Nining＆Teehnology，2008,(2):279-282.
Nanjing: PLA University of Science and Technology,2004.

Materials Science and Engineering: A, 2011(528): 3489-3495
Materials Science and Engineering: A, 2013(582): 270-275
Materials Science and Engineering: A, 2014(603): 37-51
Materials Science and Engineering: A, 2014(590): 174-185
Procedia Materials Science, 2014(3): 1780-1785

Table 3 Breach threshold value of relative damage degree BTVDL Mode 1 Mode 2 sim 0.43 0.48 exp 0.47 0.53 Most of real engineering structures have been more or less damaged, in spite that some new finished ones are also have fault, because of some factors such as structural materials and construction process.
The BTVDL will be different for different material and different section and dimension, which will be studied further in future.
[4] Jun Zhao, Liangyan Cheng, Hongwei Ma: Journal of Jinan University (Natural Science & Medicine Edition) (in Chinese).vol.29(5) (2008), p.470-477
Ratcliffe: Journal of Vibration and Acoustics, vol.122(2000), p.324-329
Ruta: Journal of Sound and Vibration,vol.314(2008), p.83-94

Through a screen, the materials were separated by size.
The screening efficiency can be calculated according to Eq.(3): ( )( ) ( )( ) %100]100 100 [ 1 321 12311 ×−− ×−−= AAAAAAAAη (3) where A1 denotes the percentage of small particle to the original materials, A2 the percentage of small particle to oversize materials, and A3 the percentage of the small particle to the downsize materials.
In: SPIE 8th annual symposium on smart structures and materials, Newport Beach, CA(2001)
Smart Materials andStructures.
ASME Journal of Applied Mechanics.

As reported in the literature, the effective elastic modulus of a perforated plate is obtained by equating the strains in an equivalent solid material to the average strain in a perforated material [7].
Chang.: Micro­droplet Atomizer PZT Actuator, (Journal of Mechan­ ics)(2010) p.423­29
Young : The Method of Fundamental Solutions for Eigen­frequencies of Plate Vibrations, (CMC­Tech Science Press) 4(2006), p.1­9
O'Donnell: Effective Elastic Constants for Thick Perforated Plates with Square and Triangular Penetration Patterns, (Journal of Engineering for Industry) 93(1971), p.935­942
Hoppmann II : Frequency of Vibration of Shallow Spherical Shells, (Journal of Applied Mechanics) 13(1961), p. 305­307

Materials are placed arbitrarily.
(3) Delivery delay of some supplies causes the frequent waiting for materials in the production site.
For example, it is hard for them to have any ideas of when the materials are absent.
Thus, it is common in the production site with lack of materials.
The requirement information flow pulls the materials flow backward.

Silicon carbide nanotubes (SiCNTs) are one kind of such materials.
One of the major problems lies in the difficulty in finding efficient storage materials.
Nowadays, most of the scientists working in this field believe that the solution of this problem will come from the synthesis and development of new specific materials.
Ltd.) was used as template materials.
Sun: International Journal of Hydrogen Energy, Vol.29(2004), p.475

Many researchers have been actively seeking cost-effective materials to adsorb heavy metal ions for wastewater purification[3-6]. peanut shell is a waste of agricultural processing.
Beijing: Chinese environmental science press, 2002.344.349.
Adsorption of Phenolic Acids on New Type of Amino Modified Polystyrene.Journal of tongji university(natural science) 2004, 32(9), 1183-1187.
[15] C.H.Xiong, C.P.Yao, Preparation and application of acrylic acid grafted polytetrafluoroe- thylene fiber as a weak acid cation exchanger for adsorption of Er(III).Journal of Hazardous Materials 2009, 170, 1125-1132.
Enhanced abiotic reduction of Cr (VI) in a soil slurry system by natural biomaterial addition.Journal of Hazardous Materials 2008, 160, 422-427.

Producing Nano-porous TiO2 fibers by Electrospinning with Phase Separation Zhaowei Liua, Yufei Tangb,*, Kang Zhaoc and Heng Zhangd School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China alzwyer617@163.com, byftang@xaut.edu.cn, ckzhao@xaut.edu.cn, d904577574@qq.com Keywords: Electrostatic spinning, Phase separation, Nano-porous TiO2 fibers, Photocatalysis.
Synthesis of highly-active single-crystalline TiO2 nanorods and its application in environmental photo-catalysis [J].Materials Letters, 2009, 63: 1471-1474
Titania nanofibers prepared by electrospinning [J].Materials Letters, 2008, (62): 4470-4472
Materials Chemishy and Physics, 2008, 107(2-3): 480-487
Microporous and Mesoporons Materials, 2004, 69(1-2): 77-83