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Experimental Materials and Methods AZ31 magnesium alloy was selected as welding material.
This is due to the ultrasonic vibration energy is absorbed by the medium, which makes materials mutual friction to product heat.
Metallurgical Evaluation of AZ31B-H24 Magnesium Alloy Friction Stir Welds, Journal of Materials Engineering and Performance, 5(2007) 655–662
Bhole, Friction Stir Welded AZ31 Magnesium Alloy: Microstructure, Texture, and Tensile Properties, Metallurgical and Materials Transactions A, 44A(2013) 323-336
Li, Study on ultrasonic stir compound welding of aluminium alloy, Journal of welding, , 12(2011) 70-72

This leads to large quantity of waste materials.
Materials and Method Material.
The composite materials were later crushed to form pallets.
Journal of Materials Processing Technology, 212: 2541– 2548
Journal of Applied Polymer Science, 110(2): 1085-1092

Construction and Building Materials. 21 (2007) 66-67
Construction and Building Materials.21 (2007) 328–337
Rutting resistance of rubberized asphalt concrete pavements containing reclaimed asphalt pavement mixtures,J.Journal of Materials in Civil Engineering.19 (2007) 475-483
[6] M.A.MULL,K.STUART,A.YEHIA.Fracture resistance characterization of chemically modified crumb rubber asphalt pavement,J.Journal of Materials Science.37 (2002) 557– 566
Construction and Building Materials.22 (2008) 1323-1330.

Mechanical behavior of TiB2 Nanoparticles Reinforced Cu Matrix Composites Synthesized by In-Situ Processing Dae-Hwan Kwon 1, a , Khoa Xuan Huynh 1, b, Thuy Dang Nguyen1, c , Pyuck-Pa Choi1, d , Myung-Gyu Chang2, e , Young-Jin Yum 2, f, Ji-Soon Kim 1, g and Young-Soon Kwon1, h 1 School of Materials Science & Engineering, Research Center for Machine Parts and Materials Processing, University of Ulsan, San 29 Mugeo-dong, Nam-gu, Ulsan 680-749, Korea 2 School of Mechanical and Automotive Engineering, Research Center for Machine Parts and Materials Processing, University of Ulsan, San 29 Mugeo-dong, Nam-gu, Ulsan 680-749, Korea a hani1972@ulsan.ac.kr, bkhoa_hx@yahoo.com, ctnguyendang2000@yahoo.com, d ppchoi@mail.ulsan.ac.kr, eche1541@hanmail.net, fyjyum@ulasn.ac.kr, g jskim@mail.ulsan.ac.kr, hyskim@ulsan.ac.kr Keywords: Titanium Diboride, Copper Matrix Composite, Self-Propagating High Temperature Synthesis
Experimental Titanium (99.5%, 10µm, irregular shape), amorphous boron (97%, < 1 µm, irregular shape) and copper (99.5%, 40µm, rounded) powders were used as starting materials.
Li : Journal of Materials Engineering Vol.10 (1995), p. 23
Lomovsky : Journal of Alloys and Compounds Vol. 297 (2000), p. 87
Onose : Journal of Nuclear Science and Technology Vol.36(4) (1999), p.380

‘Friction stir welding of aluminium alloys’ International Materials Reviews, Vol. 54, No. 2, pp. 49-93 (2009)
‘Recent Developments in Friction Stir Welding of Al-alloys’, Journal of Materials Engineering and Performance, , Vol 23, No. 6, pp. 1936–1953 (2014)
‘Dynamics of rotational flow in friction stir welding of aluminium alloys’, Journal of Materials Processing Technology, Vol 252, No. 1, pp. 643-651 (2018)
‘Recent Advances in Friction Stir Welding/Processing of Aluminum Alloys: Microstructural Evolution and Mechanical Properties’ Critical Reviews in Solid State and Materials Sciences, https://doi.org/10.1080/10408436.2017.1358145 (2017)
‘Influence of plate position, tool offset and tool rotational speed on mechanical properties and microstructures of dissimilar Al/Cu friction stir welding joints’ , Journal of Materials Processing Technology, Vol. 235, no. 1, pp.55-67 (2016).

Myriounis 3 1,2,3: Faculty of Arts, Computing, Engineering and Sciences, Sheffield Hallam University, Sheffield, United Kingdom.
Erdogan, in: Transient Thermal Stress Problem for a Circumferentially Cracked Hollow Cylinder, submitted to Journal of Thermal Stresses, Vol. 6 (1983), p. 1-14
Valle, in: Elastodynamic Solution for the Thermal Shock Stresses in an Orthotropic Thick Cylinder Shell, submitted to Journal of Applied Mechanics, Vol. 65(1998), p. 184
Kardomateas, in: Transient Thermal Stresses in Cylindrically Orthotropic Composite Tubes, submitted to Journal of Applied Mechanics, Vol. 56 (1989), p. 411
Jaeger, in: Conduction of Heat in Solids, edited by Oxford Science Publications, Oxford (1959)

Experimental Section Materials.
AlHP was purchased from Shanghai Meilaipo Chemical Materials Co.
Epoxy resin (E-51) was from Dailian Qihua Chemical Materials Co.
Chen, et al: Journal of Applied Polymer Science, 2011, 119(4), 2379-2385
Fu: Journal of Analytical Science, 2001, (06), 493-496.

Fig.2 Exhaust manifold model Fig.3 Exhaust tail pipe model Fig.4 System assembly model System frequency finite element analysis Exhaust system structure, various spare parts materials, manufacturing technology, the overall quality will affect the vibration of exhaust system [6].
So lug materials, structure and vibration characteristic parameters influence exhaust system vibration to be bigger [8].
Huang: Structure Introduce of Gasoline Direct Injection System and Exhaust System, The Journal in Chinese of Science & Technology Information.2006-29（2）P23-26
Wang: Engine Exhaust System Vibration Analysis, in Chinese Journal of Journal of Hebei University of Technology, 2005(05) P35-38
Deng: A car exhaust system vibration analysis, The Journal in Chinese of Vibration and Impact，2011 (08) P26-29

Materials and methods 2.1 Materials.
Stability of copigmented anthocyanins and ascorbic acid in muscadine grape juice processed by high hydrostatic pressure, Journal of food science, vol.72 (2007), p.247-253
Influence of pigment composition on skin color in a wide range of fruit and vegetables, Journal of the American Society for Horticultural Science, vol.122 (1997), p594-598
Kishmish Chornyi (Sharad Seedless) during maturation, International journal of food science & technology, vol.41 (2006), p.1-9
Effect of irrigation on changes in the anthocyanin composition of the skin of cv Tempranillo (Vitis vinifera L) grape berries during ripening, Journal of the Science of Food and Agriculture, vol.81 (2001), p.409-420

The Effect of Heavy Metal Ion on Microorganism in Activated Sludge Liu Meijie1, a, Dong Guori1, b , Wang Jibin2,c 1School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, Hebei , China 2 Environmental Management College of China, Qinhuangdao, Hebei, China a2543722493@qq.com, bdgrcsu@163.com, c85500946@qq.com Keyword: Heavy metal, activated sludge, Microorganism, Combined action, Virulence Abstract.
[3] Yunian Liu, Huabin Yin, Li Zhao, Review and Prospect of Research on the Influences of HeavyMetal Ions on the Biological Treatment of Waste water, Journal of Anhui Agricultural Sciences, 2008, 36(18): 7893-7895
[5] Mengde Zhu, Guowei He, Linghui Li, The influence of heavy metals on activated sludge , Journal of Anhui Agricultural Sciences, 2010 (21): 11434-11435
Journal of safety and the environment, 2004, 4(6): 43-45
Single and combined effects of nickel (Ni (II)) and cobalt (Co (II)) ions on activated sludge and on other aerobic microorganisms: a review, Journal of hazardous materials, 2008, 159(2): 187-203