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It will be hopefully to provide theoretical guidance in the option of sound insulation materials.
The Radiation Efficiency of Different Building Materials Some common building materials are used to calculate the radiation efficiency with 1/3 octave band center frequency.
The critical frequency of the same materials decreases with the thickness of a wall.
[4] Application technical specifications of building materials (Revision).
Zhang: Journal of Shandong Agricultural University (Natural Science).

Institute for Materials Discovery, University College of London, 2Kathleen Lonsdale Building, Gower Place London WC1E6BT, United Kingdom, 3Faculty of Engineering, Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham NG7 2RD, United Kingdom.
Ceramic oxide thin films are an important material, with applications in many areas of science and technology.
Titanium oxide (TiO2) is also a well-known and important material for applications such as gas sensors [1], photocatalysis materials [3], and electrochemicals [1], due to its self-cleaning [2], good corrosion resistance and biocompatibility.
Yanqing, Hydrothermal preparation and characterization of brookite-type TiO2 nanocrystallites, Journal of Materials Science Letters. 19 (2000) 1445-1448
Rauhala, Atomic layer exitaxy growth of titanium dioxide thin films from titanium ethoxide, Chemistry of Materials. 6 (1994) 556-561

Because the ceramics material is very fragile, and is highly sensitive to the surface flaw, the machining of ceramics material is difficult [1].
The machining methods of ceramics materials mainly include grinding, laser processing, ultrasonic machining and electrical discharge machining (EDM).
Sanders: Journal of Materials Engineering and Performance Volume 13(2004), p. 753-757
Vasilos: Journal of Materials Science Vol. 37 (2002), p. 2587-2590
Deng: Forecast and Decision of Grey System (Huazhong University of Science and Technology Publications, China 1986)

The experimental results illustrate that the proposed PMTM is capable of performing multiaxial loading tests of materials and thus a suitable candidate for multiaxial material testing machine.
In conclusion, the PMTM is a viable choice for multiaxial mechanical properties test of materials.
Tokuda, "Mechanical evaluation of spinal deformation using 6-axis material testing machine," Journal of Biomechanics, vol. 39, Supplement 1, p.
Hinton, "Adaptive control of materials-testing machines," Automatica, vol. 33, pp. 1119-1131, 1997
Ince, "Fatigue characterization and modeling of 30CrNiMo8HH under multiaxial loading," Materials Science and Engineering A, vol. 528, pp. 2484-2494, 2011

Materials and Methods The parameters of the original Mohr – Coulomb plasticity condition are determined from triaxial tests.
Canadian Geotechnical Journal. 18(4) (1981) 599-603
Series: Materials Science and Engineering. 463 (2018) 1–11
Materials Science Forum. 945 (2019) 813-820
IOP Conference Series: Materials Science and Engineering. 463 (2018) Paper № 032101.

Friction in closed flaws is modeled by inserting ideal elasto-plastic materials into the flaws.
International Journal of Rock Mechanics & Mining Sciences, Vol.38 (2001), p. 909-924 [6] C.A.
Analysis of crack coalescence in rock-like materials containing three flaws--Part II: numerical approach.
International Journal of Rock Mechanics & Mining Sciences, Vol.38 (2001), p. 925-939 [7] Sahouryeh, E, Dyskin, A.V. and Germanovich, L.N.
International Journal of Rock Mechanics & Mining Sciences, Vol.41(3) (2003), p. 419-419. .

Pietrzyk, Through-process modelling of microstructure evolution in hot forming of steels, Journal of Materials Processing Technology, 125-126 (2002) 53-62
Logé, Development of numerical tools for the multiscale modelling of recrystallisation in metals, based on a digital material framework, Computer Methods In Materials Science, 7 (2007) 142-149
Rolfe, Modeling of Advanced High Strength Steels with the realistic microstructure–strength relationships, Computational Materials Science, 45 (2009) 860-866
Bleck, Characterization and modelling of failure initiation in DP steel, Computational Materials Science, 75 (2013) 35-44
Kurzydlowski, Modeling structures of cellular materials for application at various length-scales, Computer Methods in Material Science, 13 (2013) 493-500

Experimental Materials Preparation.
Zhou: Journal of Materials Chemistry, Vol.9 (2012) No.22, p.3680
Wang: Materials Technology: Advanced Functional Materials, Vol.A2 (2014) No.29, p.A59
Tatsumi: Chemistry of materials, Vol. 18(2005) No.17, p.4668
Hackney: Journal of Materials Chemistry, Vol. 23(2005) No.15 ,p. 2257

Study on the improvement of microprism retroreflective material Zhu Wenkun1, a, Zhu Min1, b, Yuan Changying1, c, Diao Ruimin2, d 1Southwest University of Science and Technology, China Academy of Engineering Physics Research Center of Laser Fusion properties of matter under extreme conditions Joint Laboratory, China, Mianyang, 621010 2Mianyang Longhua Film Co., Ltd., China, Mianyang, 621000 azhuwenkun@swust.edu.cn,b419109279qq.com, cyuanchangying@swust.edu.cn, dmarket@longhuafilm.com Keywords: microprism retroreflective material, improvement and optimization Abstract.
Meanwhile, the distinctive road signs designed by reflective materials can make drivers engender a good conditioned reflex, thus decreasing accident rate by 30% to 40%.
Elementary introduction to the current situation of retroreflective materials in China and the perspective of development trend, J.
China Safety Science Journal. 142 (2004) 71-76
Journal of Zhejiang University Of Technology. 383 (2010) 351-354

Hwang: Application of a genetic algorithm to the optimal design of the die shape in extrusion, Journal of Materials Processing Technology Vol. 72 (1997), pp. 96-77 [2] A.
Abdel-Hamid: An optimum-curved die profile for the hot forward rod extrusion process, Journal of Materials Processing Technology Vol. 73 (1998), pp. 97-107 [3] P.
Ulysse: Extrusion die design for flow balance using FE and optimization methods, Journal of Mechanical Sciences Vol. 44 (2002), pp. 319-341 [5] S.
Kim: A study on the optimal tool shape design in a hot forming process, Journal of Materials Processing Technology Vol. 111 (2001), pp. 127-131 [7] N.
Xinwu: Numerical simulation and die structure optimization of an aluminum rectangular hollow pipe extrusion process, Materials Science and Engineering Vol. 435-436, pp. 266-274 [11] U.