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When these hard and brittle materials are used for mechanical structural parts, the need to cut or drill them is inevitable.
Currently, the methods of drilling hard and brittle materials include grain machining, which is a mechanical method, electronic beam machining, which is an electrical method, and laser machining, which is an optical method [4].
Among these, the grain machining has been widely used because of fewer restrictions in the materials and cost efficiency in facilities.
So brazed diamond tools are taken as the best one to machine hard and brittle materials.
Treadwell: International Journal of Machine Tools & Manufacture, (2005) No.45, pp. 1402 [6] A.K.

Performance degradation of piezoceramics at cryogenic environments leads researchers toward other materials that need low voltage operation and negligible power dissipation [4].
Teter, Journal of Applied Physics, Vol. 87, no. 9(2000) 6313
Flatau, Journal of Applied Physics, Vol. 97 ( 2005) 10R505
Clark, SPIE proceeding Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring (2008)
Glezer and V.Molotilov , Soviet Material Science Reviews, Vol. 1 (1987) 385- 388

Kaewkhao1,2, b 1Science Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, Nakhon Pathom, 73000, Thailand 2Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom, 73000, Thailand akeyrati@hotmail.com, bmink110@gmail.com Keywords: Lu2O3, Glass, Attenuation coefficients, Photon Abstract.
Introduction The development of new multi-functional materials, based on the widely used purpose, has attracted much attention as the field of materials science and technology.
In order to meet increasing the demand, there has been extensive attempt in order to employ on materials researches.
Glass is also one of the promising functional materials for various fields of research not only optical materials, glass ceramics, but also in radiation physics and radiation protection [1-3].
Lutetium oxide-based host material has received much attention for its potential application in especially, scintillator materials for gamma ray detections [7-9].

These waste materials not biodegradable in nature, so it is left as stocks or dumped illegally.
Size of rubber is close to size of these materials (unlike previous researches).
Fig. 1 shows some materials were used in experimental work.
[7] ASTM C33 (2018), Standard Specification for Concrete Aggregate″, American Society for Testing and Materials
J Emenike, Effect of curing methods on density and compressive strength of concrete, International Journal of Applied Science and Technology. 3 (2013)

The 108 × 3 mm B10 tubes were used as the experimental materials.
Materials China, 2014, 33(2): 65-76. https://www.cnki.net [2] Glover T J.
Journal of Materials Science and Technology, 2021, 86: 227-236. https://doi.org/10.1016/j.jmst.2021.01.034 [16] Zhukov A.
Materials Horizons, 2021, 8(3): 948-955. https://doi.org/10.1039/D0MH01341B [18] P Roberto, D Farkas.
Computational Materials Science, 2020, 173: 109366. https://doi.org/ 10.1016/j.commatsci

Flow Stress Model for Workpiece Materials.
Lagrangian techniques, the tracking of discrete material points, have been applied to metal cutting modeling.
Zeren: Journal of Engineering Materials and Technology, Vol. 153-154 (2004), pp. 1019-1025
Guo: International Journal of Mechanical Sciences, Vol. 42(2000), pp. 1069-1086
Erman: International Journal of Machine Tools & Manufacture, Vol. 44 (2004), pp. 933-944

Therefore, structural damping is obtained through additional materials with high damping (e.g., rubber pads) or specially designed structures (e.g. viscous dampers).
International Journal of Solids and Structures.
Journal of Nonlinear Mechanics.
Sci-tech journal of Moscow State University of Civil Engineering.
Applied Mechanics and Materials.

Pure aluminum is used as the casting material.
Flow-induced defects Pure aluminum is adopted as the casting material.
Journal of Computational Physics, Vol. 34(1980),p.287
Hirt: Modeling Turbulent Entrainment of Air at a Free Surface (Flow Science Inc.
Wood: Materials Science and Technology, Vol. 20 (2004),p.505

The scope of tasks to be solved using this method includes: quality control of materials, study of thermal stability, determination of the thermal effects of chemical reactions, determination of temperature and enthalpy of phase transitions, study of oxidative stability, determination of crystallinity of semi-crystalline materials.
Ritchie, Architecture of high-strength aluminum–matrix composites processed by a novel microcasting technique, NPG Asia Materials. 11(1) (2019) 1-12
Ghomashchi, Effects of modification during conventional and semi-solid metal processing of A356 Al-Si alloy, Materials Science and Engineering A. 415 (2006) 273-285
Tynchenko, An experience of a liquid glass mixture using for AlpHaset process in Russia, Materials Science Forum. 946 (2019) 690-695
Saha, Thermal analysis during turning of AZ31 magnesium alloy under dry and cryogenic conditions, The International Journal of Advanced Manufacturing Technology. 91(5) (2017) 2855-2868

Vacuum exhaust processes in vacuum pressure-swing adsorption for upgrading methane in ventilation air methane Yongling Li1,a, Chuanzhao Zhang1,b, Yingshu Liu1,c, Xiong Yang1,d, Yu Meng1,e 1Department of Thermal Engineering, University of Science and technology Beijing, Beijing, 100083, China ayl_li03@me.ustb.edu.cn, bchuanzhao.zhang@163.com, cysliu@ustb.edu.cn, dkindy_yang@163.com, egroundsnail@sina.com Keywords: VAM, Adsorption, Upgrading, Activated carbon, Vacuum exhaust.
Color figures are welcome for the online version of the journal.
Acknowledgements This work was supported by the National High-Tech R&D Plan of China ("863" plan). (2009AA063201), and Beijing Natural Science Foundation (3113031).
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