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mechanical and functional properties due to the combination of its constituent materials that possesses desirable properties.
H., Hocheng, H., Tai, N., and Liu, S.Y, Effect of electrical discharge machining on the characteristics of carbon fiber reinforced carbon composites, Journal of Material Science. 36 (2011) 2037- 2043 [3]Arul, S., Vijayarahavan, L., Malhotra, S.
Ishikawa, Journal of Macromolecular Science,Physics.
C, Compresensive analysis of delamination in drilling of composite materials with various drill bits, Journal of Materials Processing Technology. 140 (2003) 335-339 [9] Devim, J.
Materials Processing Technology. 140 (2003) 335–339 [19] Taso, C.C, Taguchi analysis of drilling quality associated with core drill in drilling of composite material, Int.

Materials (Basel), 13(10): 2321 (2020)
Advanced Functional Materials (2019)
Materials Science and Engineering: C, 125 (2021) [49] C.
Journal for Science, 20(1), 70-76: (2015) [56] O.
Journal of Materials Science: Materials in Electronics 33(2): 1078-1090 (2022) [57] G.

The variation of Poisson’s ratios has very insignificant effect on the stress intensity factor of non-homogeneous materials [[6] F.Delale, F.Erdogan, Interface Crack in a nonhomogeneous elastic Medium, International Journal of Engineering Science. 26 (1988) 559-602. ].
The boundary condition of the crack surface is (3) Crack-Tip Higher Order Asymptotic Field The crack tip stress field would be equipped with the same square root singularity as that of homogeneous materials when the material parameters of different composite materials at the interfaces are continuous[6,[7] Z.
Noda, Crack-tip Singular fields in Nonhomogeneous Materials, Journal of Applied Mechanics. 61 (1994) 738-740. ].
The fields are similar to the famous Williams’ solutions for homogeneous materials.
Acknowledgements The research is supported by the National Natural Science Foundation of China (No.11172332, No.90305023) References

Synthesis and properties of inorganic organic composite UVshielding materials with supramolecular structure Xiaobo Zhang 1, a 1Yanching institute of Technology, Sanhe 065201, China azxb_1015@163.com Keywords: HASB; hydrotalcite; intercalation assembly; supramolecular; UV shielding properties Abstract.
The material was obtained in the ratio of MgZn2Al, can achieve the UV absorption maximum and better thermal stability, resulting in a new type of inorganic - organic composite supramolecular UV shielding materials.
Experimental 2.1 Materials Mg (NO3) 2 • 6H2O (99.9 wt%) and Al (NO3) 3 • 9H2O was purchased from Shanghai Zhizhen Chemical Co., Ltd.; Zn (NO3) 2 • 6H2O (99.9 wt%) was purchased from Tianjin jinhuitaiya chemical reagent Co.
Journal of zhejiang institute of science and technology.
Chinese journal of inorganic chemical.

· Ductile materials and high stresses
Shivpuri, Prediction of chip morphology and segmentation during the machining of titanium alloys, Journal of Materials Processing Technology 150 (2004) 124–133
%V alloy, Materials Science and Engineering A 190 (1995) 173–180
CIRP Journal of Manufacturing Science and Technology 1 (2008) 81–85
Journal of Materials Processing Technology 167 (2005) 1–13

Kovkov, Sharing of metallurgical slags and cinder-slag material for production of ceramic materials.
Vasilenko, Use of Electric Steel Melting Slag in Production of Expanded Clay Gravel, Materials Science Forum, (2016) 345-351
Gorodov, The chemical technology of ceramic materials, 1990
Lupandina, Pore-forming additives for ceramic gravel production made of technogenic material, Materials Science Forum, (2016) 196-201
Fadaly, Chemical and microbiological Analyses of certain water sources and industrial wastewater samples in Egypt, Pakistan Journal of biological Sciences, 3(5) (2001) 777-781

In recent years, with the deep research on new materials, both the traditional plastic cushioning materials such as EPE, EPS, and the paper-based cushioning materials such as honeycomb paperboard, corrugated cardboard are widely used.
In the derivation process of equation (9), there is not any linearity assumption of the material, so the equation is applicable to the overlay combination of linear materials and non-linear materials.
Parallel pads were usually made by same materials.
The C-curves of two materials are shown in Fig.2.
(In Chinese) [4] Z.W.Wang and Y.P.E: Materials and Design, vol. 31 (2010), pp. 4321–4328; [5] D.Gao and F.D.Lu: Journal of Vibration and Shock, Vol. 29 (2010) No.10, pp. 131-136.

Nix, A Method for Interpreting the Data from Depth-Sensing Indentation Instruments, Journal of Materials Science 1 (1986) 601-609
Swain, Determining the Mechanical Properties of Small Volumes of Material from Submicrometer Spherical Indentations, Journal of Materials Research 10 (1995) 101-112
Oliver, Indentation Power-Law Creep of High-Purity Indium, Metallurgical and Materials Transactions A30 (1999) 601-610
Limarga, Measurement of Creep-Induced Localized Residual Stress in Soda-Lime Glass using Nano-Indentation Technique, Materials Science and Engineering A318 (2001) 211-215
Karlsson, On the Determination of Residual Stress and Mechanical Properties by Indentation, Materials Science and Engineering A 416 (2006) 139-149

Materials and Methods Raw materials Sn-0.7Cu, Al and SiC powder with the approximate size 45 micron, 63 micron and 44 micron respectively, were used in this research.
Materials Science and Engineering A 529 (2011) 41 - 48 [5] YAN Yan-fu and ZHU Jin-hong (2006).
Journal of Materials & Design. 837-845 [7] Kang-I Chen, Shou-Chang Cheng, Sean Wu and Kwang-Lung Lin (2005)..
Journal of Materials Engineering and Performance, 2010.19(30):p.335-341
Materials Science and Engineering: A, 2006. 423 (1-2): p/ 166-169 [14] Nai, S.M.L., J.

Moreover, the material is generally presumed to be rigid perfectly plastic.
Their theoretical model assumes an elastic plastic material with linear strain hardening.
The authors gratefully acknowledge the support by Warsaw University of Technology under Grant No N501 156038, Ministry of Science and Higher Education (Poland).
Symonds, Large deformations of beams under transverse impast, Journal of Applied Mechanics 19 (1952) 308-314
Nowacki, New applications of Hopkinson's pressure bar technique for determining dynamic behaviour of materials, Journal of Theoretical and Applied Mechanics, 34 (1996) 259–280.