Search results

These are sudden vibrations between a material and the tool during machining.
The machinability of metals such as Titanium and its alloys is generally considered poor owing to several inherent properties of the materials [5-8].
Dong-Woo, Prediction of Chatter in CNC machining based on dynamic cutting tool for ball end milling, sciences direct, (2009)
International Journal of Precision Engineering and Manufacturing 1 (2) (2000) 67–75
Mosaddegh, Prediction of chatter in high speed milling including gyroscopic effects, International Journal of Machine Tools and Manufacture, 46(9) (2006) 996-1001.

According to the metallic material manual, the mechanical property parameter can be got as the table 1 shows below.
Table 1 Material property of the parts Part name Material Yield limit (Mpa) Poisson ratio Elastic Modulus (Gpa) Shell and drive block 40Cr 784 0.30 211 Rivets 35 265 0.31 212 By the use of the software Hypermesh, the solid model is meshed in this software.
Journal of Vibration and Shock, Vol. 28(2009), p.92-96 [6] Zhang H X, Automobile Design.
Mechanical Science and Technology, Vol. 25(2006), p.472-475 [8] Shen J H, Chen Sh H.
Journal of Vibration and Shock, Vol. 28(2009), p.90-93

Microstructure Evolution and Mechanical Properties of Mg-10.37Gd-3.66Y-2.27Zn-0.52Zr Alloy during Reciprocating Upsetting-Extrusion Guoqin Wua, Jianmin Yub,*, Leichen Jiac, Wenlong Xud, Yonggang Tiane and Zhimin Zhangf School of Material Science and Engineering, North University of China, Taiyuan, 030051, China awuguoqin5656@hotmail.com, byujianmin@nuc.edu.cn, cjlc226688@hotmail.com, dwenlong0610@hotmail.com, etianyonggang@outlook.com, fzhangzhimin@nuc.edu.cn Keywords: Mg-Gd-Y-Zn-Zr; RUE; Microstructure; Mechanical properties Abstract.
Materials and Methods The as-cast Mg-10.37Gd-3.66Y-2.27Zn-0.52Zr alloy was homogenized at 520 °C for 16 hours firstly for eliminating dendrite segregation.
Dong, Texture and texture optimization of wrought Mg alloy, The Chinese Journal of Nonferrous Metals.21(2011) 2371-2381 [8] M.H.
Journal of Alloys Compounds. 2011,509(26):7303-7315
A two-step dynamic recrystallization induced by LPSO phases and its impact on mechanical property of severe plastic deformation processed Mg97Y2Zn1 alloy, Journal of Alloys and Compounds, 704(2017)509-517

Aperture size impact resistance which the airflow producing sound wave through the material holes produced and impact the size of rigidity of sandwich panels.
At the same time, the aperture size of sound panel increases, resistance which airflow producing sound wave through the material holes produced decreases, energy loss decreases, frequency response sensitivity increases.
Increase the thickness of the material, the effect of sound absorption was improved obviously at the low frequency [11].
Vol. 33(2009), P. 21 [7] Martin Colloms, Joerg Panzer, Vladimir Gotcharov, et al: preprint of the 104th AES convention, Amsterdam, (5)1998, P16 [8] Zhi Wang, Zhe Jiang: Journal of Jiangsu University of Science and Technology (in Chinese).
Vol. 19(2002), P. 94 [10] ChengGuo Wang, ZunMin Geng, MuSen Li: Materials Science and Technology(in Chinese).

Decoration materials, kitchenware, detergent, disinfectant, gas heater, mosquito-repellent incense, cigarette, kitchen oil fume , all of which will release formaldehyde, benzene, methylbenzene , dimethylbenzene, acetic ether, vinyl chloride, ammonia, nicotine, carbon monoxide, nitric oxide, carbon dioxide, sulfur dioxide etc.
Construction materials: e.g. granite, marble, cement, enameled bricks contain radioactive elements, radium, thorium, uranium and their decaying product—radon, which can influence the hematopoietic function of human body; to induce teratogenicity, and finally to lead to leukemia.
If we want to improve or control the serious pollution, the comprehensive prevention and control should be taken. [7]If we want to eliminate the pollution completely, we have to control the air pollution source, correctly choose the construction and decoration materials, improve the indoor ventilation, ventilate or air the room and value the cleaning environment, etc.
[5] Liken Chen, Lilli, Wangling, Latest methods on disinfection and purification of the indoor air 2006 Journal of Public Hearth and Preventive Medicine 17(6):109-113
The Science of the Total Environment,285:53-67 [7] Lee Ch-Wada Y-Tachyon Ch-Heat al. 2006.Characteristics and health impacts of volatile organic compounds in photocopy centers.

The Bayesian Linear Regression Model has been successfully utilized in surface roughness prediction of machined materials other than RSA-443.
Furthermore, the application of the hybrid model to other fields and materials has been recommended.
(2) Materials and Method Three control variables (cutting speed, feed rate and depth of cut) have been selected prior to designing the experiment.
Alique, "A Bayesian network model for surface roughness prediction in the machining process," International Journal of Systems Science vol. 39, 2008
Jia, "Modeling and Predicting Surface Roughness in Hard Turning Using a Bayesian Inference-Based HMM-SVM Model," IEEE Transactions on Automation Science and Engineering, vol. 12, pp. 1092-1103, 2015

The Effect of Initial Orientation and Rolling Schedule on Texture Development in Duplex Steel Janusz Ryś 1,a , Wiktoria Ratuszek 2,b and Małgorzata Witkowska 3,c 1-3 AGH-University of Science & Technology, Faculty of Metallurgy & Materials Science, av.
Material and Experimental Procedure Material under examination was the ferritic-austenitic duplex type steel Fe-24%Cr-6%Ni with the chemical composition shown in Table 1.
Ryś: Journal of Materials Processing and Technology, vol. 64 (1997), p. 343. 30 µµµµm b a 30 µµµµm

This paper studies the various parts of the automatically benchmarked device using 45 steel materials.
Its material properties are shown in Table 1.
Material properties Description Modulus of elasticity/Gpa Poisson ratio Density/ 45 200 0.3 7.85 Meshing has a direct impact on the whole calculation results.
LM201374), Shanghai Science and Technology Innovation Project(NO. 14YZ143), Shanghai Institute of Technology graduate course construction funds(NO.101YM130007).
[4] Guangfeng Shi, Kun Ni, Guoquan Shi etc, “Modal analysis of laser drilling machine based on ANSYS Workbench”, Journal of Changchun University of Science and Technology, vol.33, 2010, pp. 95-97

These materials have good processability and light weight.
Inagaki, Composites Science and Technology, 63 (2003) 1281
Ochi, Mechanics of Materials, 40 (2008) 446
Kawai, Journal of Wood Science and Technology, 53 (2007) 481
Mariatti, Applied Mechanics and Materials, 271-272 (2013) 81

Introduction To achieve superior performance in machine parts and structures, various materials have been researched and developed with the aim of achieving high strength, ductility and desirable performance criteria.
The specimen was gray cast iron, which is representative brittle material widely used in industry.
Specimen The material of the specimen used in this test was FC 200 (gray cast iron).
References [1] Toshihisa Nishioka, Hiroyuki Tokudome and Masahiro Kinoshita: International Journal of Solids and Structures.
Vol. 77 (2010), p. 479 [4] Cheng Hsun Hsu, Shen Chih Lee, Yih Hsun Shy and Wei Tang Chiou: Materials Science and Engineering.