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Introduction Functionally graded materials (FGM) have widely used as structural components in aerospace, automotive engineering [1].
Therefore, structures where a substrate made of FGM is coupled with surface-bonded piezoelectric layers and using piezoelectric materials to realize structure vibration control in the engineering department has a broad application prospect.
Material Properties Generally speaking, most of the FGM are employed in high-temperature environments and many of the constituent materials may possess temperature-dependent properties.
International Journal of Mechanical Sciences 03 (2002) p.561-584 [4] Huishen Shen.
Journal of Applied Mechanics ASME 51 (1984) p.745–752

Journal of Materials Processing Technology 2005;169,427–436
Procedia Materials Science 2014;5, 633 – 1639
Journal of Materials Processing Technology 2017;245,70–79
Journal of Materials Processing Technology 2005;170,385–391
Journal of Materials Processing Technology 1998;79,30–40

The article studies scientific approaches to the creation of biocompatible implant materials, considers their types, defines the basic requirements for biocompatible materials.
There are three groups of materials (Figure 1) Figure 1.
Therefore, modern science faces the task of developing these materials that can withstand the aggressive medium of the body, but at the same time guarantee a long service life and maintain the required qualities without negative responses in the body.
Implant materials and osteogenesis.
International Journal of Pharmaceutical Research. 2020; 12(4): 3454-3463.

Surface Characteristics and Modification of Different Carbon Materials M.
Experimental Materials.
Silver deposition at the surface of carbon materials was performed by immersing carbon materials in AgNO3 of different concentrations: 25, 50, 75, 100 and 125 mg/dm 3.
Table 1 Surface characteristics of carbon materials.
Schwarz: Journal of Colloid and Interface Science Vol. 130 (1990), p. 157

Combining materials handling and stacking operations, this paper takes the fertilizer bags as the object and studies on the image processing method of the material stacking and segments the stacking image.
Introduction Materials handling and stacking is a common industrial and agricultural production operations.
The powder products such as cement, fertilizer, rice, flour, starch, feed, building materials, chemical raw materials, and metal products widely are used woven bags for packaging, and the production of these materials is very large.
There are some advantages by using robot load-unloading materials, such as gripping reliably, moving flexibly, placing neatly and so on.
References [1] Li Changchun, Liu Guangzhi: submitted to Journal of University of Jinan (Science and Technology), in Chinese, Vol. 21, No. 3 (2007), p. 238-242

International Journal of Minerals, Metallurgy, and Materials, 2017, 24(9): 999-1003
Materials Science and Engineering A, 2003, 343(1-2): 71 - 75
Materials Science Forum, 2008, 591-593:649-653
Science of Advance Materials, 2019, 11: 483-488
International Journal of Refractory Metals and Hard Materials, Volume 36, January 2013, Pages 162-166

Australian Journal of Basic and Applied Sciences. 2012, 6(12):492-498
Indian Journal of Materials Science. 2014, 2014:7 P
Dental Materials Journal. 2009, 28(6): 671-678
Dental Materials: Official Publication of the Academy of Dental Materials. 2007, 23(8):983-993
Dental Materials: Official Publication of the Academy of Dental Materials. 2006, 22(11):1035-1044

Compared with analytical models, numerical models is promising in the prediction of machinability of workpiece materials, tool wear, tool failure, and surface integrity of the machined surface [1].
Acknowledgement This paper is sponsored by the National Natural Science Foundation of China (No.
Astakhov: Journal of Materials Processing Technology.
Guo:Journal of Materials Processing Technology, Vol.142 (2003), pp.72-81
Otho, M.A: International Journal of Machine Tool & Manufacture, Vol.42 (2002), pp.1373-1383

Explosion-protection performance test After fill materials in the container, the lower the pressure we get the better of the explosion-protection material.
Fill the materials into the explosion box.
Fig 6.The curve when not filled with materials Fig 7.
We can know from the fig that the maximum pressure of the LPG explosion when filled with materials is about 50KPa far lower than not filled the materials.
References [1] Lifeng Xie; Jinghong Wang; Lifang Rao and Bin Li: Petroleum chemical safety and environmental protection technology. 2010,26(1):34-37（published in Chinese) [2] Yuan Tian; Weifang Gu and Hong Tian: Industrial Safety and Environmental Protection. 2007,33(3):38-40（published in Chinese) [3] Xujie Lu and Bangqin Ding: The journal of the Institute of project of Shen Yang (natural science edition) .2006,2(2):176-178（published in Chinese) [4] Shuyou Wang; Yingmin Zheng and Xiaohui Gu: Explosive Materials. 2005,34(3): 36-38（published in Chinese) [5] Zijiang Nan; Ai-ying Shong; Fa Cao and Bingyuan Fan: Ordnance Material Science and Engineering. 2001,24(4):19-22（published in Chinese) [6] Hongwen He and Jinyuan Cheng: Electric Explosion Protection. 2005:35,36（published in Chinese)

Mohamed, H.A Azhar, Postural Sway and Shooting Accuracy of Skilled Recurve Archers, Journal of Movement, Health & Exercise. 1(1) (2012) 49-60
Balaji, Optimization of Ovality on Drilling Glass Fibre Reinforced Plastic Composites with Coated Tungsten Carbide Tool: International Journal of Innovative Research in Science, Engineering and Technology, India, 2, (7), 2013
Wiliams, Design and Manufacturing of a Formula SAE Intake System Using Fused Deposition Modeling and Fibre-Reinforced Composite materials.
Rapid Prototyping Journal. 16(3), (2010) 174-179 [5] E.
Journal of Motor Behaviour. 40 (5) (2008) 400-408