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Acoustic Properties of Materials for Vibration Reduction and Resistance on Ultra-precision Machine Dan Huang1, a, Ying Wang2,b 1 School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000 2 School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000 ahuangdan@hpu.edu.cn, bjyjdle@126.com Keywords: ultra-precision machining, porous media, viscous flow, acoustic absorption coefficient Abstract.
A complete theoretical description of waves in materials with pores was obtained by Boit [4] in 1956.
Porous materials absorb acoustic energy by friction with the air that moves inside the pores.
Acknowledgement This research is financially supported by the National Science Foundation of China under grant No. 51102080, Henan Science and Technology Department under grant No. 112102210244, Henan Education Department under grant No. 2011A440002 and the Opening Project of Henan Key Discipline Open Laboratory of Mining Engineering Materials.
Lee: International Journal of Machine Tools and Manufacture, Vol. 50(2010), p. 241 [3] U.

The study discusses the important use of smart materials and how they are incorporated into contemporary materials.
Shape-memory alloys are examples of intelligent materials.
Leka, Aging Effects in Cu-Zn-Al Shape Memory Alloy, Materials Science Forum Vols. 453-454,2004, pp. 187-192 ,doi:10.4028/www.scientific.net/MSF.453-454.187
Series: Materials Science and Engineering 1094 (2021) 012160 IOP Publishing doi:10.1088/1757-899X/1094/1/012160
Series: Materials Science and Engineering 987 (2020) 012028 IOP Publishing doi:10.1088/1757-899X/987/1/012028

The thermal conductivity of CPVC material is very less than the metals used in practice.
Selecting CPVC as pipe material gave influential results leaving less heat losses to surroundings.
Computational fluid dynamics simulation of length to diameter ratio effects on the energy separation in a vortex tube, Thermal Science, Year 2011, Vol. 15, No. 3, pp. 833-848 [6].
Journal of Fluid Mechanics, 1982, p 139 [11].
Journal of Engineering Physics, vol 27, no 6, December 1974, pp 1578-1581

Song, (2008), Journal of Magnetism and Magnetic Materials, 320(21)
Gedanken, (2016), Journal of Materials Science: Materials in Electronics, 27(6)
Naoe, (2001), Journal of Magnetism and Magnetic Materials, 235(1–3)
Morkoc, (2009), In Journal of Materials Science: Materials in Electronics (Vol. 20, Issue 9)
Satyapal, (2020), Journal of Materials Science: Materials in Electronics. doi:10.1007/s10854-020-03454-z  [33] R.

Development of Materials for Solid State Hydrogen Storage Katarína Kušnírová1,a*, Lenka Oroszová1,b, Dagmara Varcholová1,2,c and Karel Saksl1,2,d 1Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic 2Faculty of Materials, Metallurgy and Recycling, Technical University of Košice, Letná 9, 042 00 Košice, Slovak Republic a*kkusnirova@saske.sk, bloroszova@saske.sk, cdvarcholova@saske.sk, dksaksl@saske.sk Keywords: Hume-Rothery criterion; high entropy alloys; solid state hydrogen storage; solid solution.
Interest in solid materials suitable for hydrogen storage in 2016 was focused on high-entropy materials after a publication by M.
High-entropy materials: A brief introduction.
Journal of Applied Physics 109 (2011) 103505
In Progress in Natural Science: Materials Internat. 21 (6) (2011) 433-446

Potential applications of graphene extend across a wide range of industries, including electronics and electronics. materials science, energy storage, medicine and much more, which emphasizes its deep scientific and technological significance [2].
In this way, the word “waste” can be replaced by “renewable resource materials” as the waste is used as feedstock materials in various processes [8].
Ramelan, "Simple synthesis of rGO (reduced graphene oxide) by thermal reduction of GO (graphene oxide)," in IOP Conference Series: Materials Science and Engineering, 2020, vol. 858, no. 1: IOP Publishing, p. 012009
Fadillah, "Green synthesis approach to produce TiO2/rGO nanocomposite as voltammetric sensor for monitoring trace level bisphenol-A," Materials Science and Engineering: B, vol. 286, p. 116083, 2022
Zhang, "The acetic acid gas sensing properties of graphene quantum dots (GQDs)–ZnO nanocomposites prepared by hydrothermal method," Journal of Materials Science: Materials in Electronics, vol. 28, no. 24, pp. 19164-19173, 2017/12/01 2017, doi: 10.1007/s10854-017-7873-7

Different kinds of researches reveal that the material intrinsic length is determined by many factors, including materials (e.g. metal, rock, concrete, and clay), material properties (e.g. shear modulus, yield strength, and hardness), material microstructure (e.g.
After natural drying and sieving (diameter<0.075) of clay collected from Tianhe District of Guangzhou the clay is used as matrix materials in this study.
The basic physical properties of materials are shown as Table 1
Acknowledgement This work was financially supported by State Key Laboratory of Subtropical Building Science (2012ZA04), Natural Science Foundation of China (51208211) and Fundamental Research Funds for the Central Universities(2012ZM0089).
Mechanics of Materials. 2012, 44: 189-211

Twelve types of fabrics made from different textile materials were tested.
Heat-moisture transfer performance of the textile materials such as fabric is one of the key factors affecting clothing wearing comfort, which also decides the performance of some special functional fabric.
Twelve types of fabrics with different structural features and made from different textile materials were tested for the temperature regulation properties.
D., Science, 1941, 94 (2445): 428-430
[10] Mu Yao and Mei-wu Shi, Journal of Northwest Institute of Textile Science and Technology, 2001, 15 (2): 50-52

Journal of Polymer Science Part a-Polymer Chemistry 44, 3629-3639 (2006)
Journal of Polymer Science Part B-Polymer Physics 46, 1652-1659 (2008)
Journal of Applied Polymer Science 70, 1753-1757 (1998)
Chemistry of Materials 9, 761-765 (1997)
Weber William, in Science and Technology of Silicones and Silicone-Modified Materials.

Introduction Electrical Discharge Machining (EDM) is a process for removing material from electrical conductive materials.
[2] J.C Rebelo, A Morão Dias, Ruy Mesquita, Paulo Vassalo, Mário Santos, An experimental study on electro-discharge machining and polishing of high strength copper–beryllium alloys, Journal of Materials Processing Technology, Vol. 103(3), July 2000: 389-397
International Journal of Refractory Metals and Hard Materials, Volume 27(4), July 2009: 676-682
Fukuzawa, “A Study of Micro–EDM on Silicon Nitride Using Electrode Materials” International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, Vol. 2010(1):1-7
Electrical discharge Machining properties of noble crystals, Journal of Materials Processing Technology,Vol.149, Issues 1-3, (2004) :393-397