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Because in the FSW method, welding occurs in the solid state, much less heat is supplied to the joined materials as compared to the case of conventional welding.
An example of the Nyquist chart for a sample of the native material 7020 a) b) Fig. 4.
Charge transfer resistance value by a double layer of Rct is smaller for a sample of the native material and sample welded by MIG, which indicates a lower resistance to withstand the charge exchange (ions, electrons) between the material and the electrolyte.
Czechowski, Effect of anodic polarization on stress corrosion cracking of some aluminium alloys, Advances in Materials Science 7(1/11) (2007) 13–20
Czechowski, Low-cycle fatigue of friction stir welded Al-Mg alloys, Journal of Materials Processing Technology 164–165 (2005) 1001–1006

Introduction Hall-Petch relationship, σy=σ0+kd-1/2, where σy　is the yield stress, k　is constant, d is grain size, is well established in the polycrystalline metallic materials.
Cheng: Science Vol.300 (2003), p.1275 [3] X.Z.
Ma, Y.T..Zhu: Journal of Materials Science Vol.42 (2007), p.1427 [6] A.H.
Aust, U.Erb: Materials Science and Engeering A Vol.237 (1997), p.150 [9] L.I.
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Specifically, is based on the using character and environment of indoor, using materials, technology and art to create a internal space of function reasonable, comfortable and beautiful, consistent with people's physiological and psychological needs.
Simple and careful craft, materials focus on texture, rich connotation expression.
If the material of furniture, lighting, shape, color are the same, space is easy to reach visual balance effect.
[3] Shan Wei.Furnishing arts aesthetic composition and performance.Journal of Nanjing Arts Institute,2009(01):49-52
[9] Jiang Hui.Analyses on modern interior furnishing design arts.Friend of Science Amateurs,2010(22):65-67

Introduction Refining treatment to structure of material is the most efficient method to improve strength as well as malleability of material [1-2].
Acknowledgements This work was financially supported by Inner Mongolia Natural Science Foundation (2010BS0704) and Innovation fund of Inner Mongolia University of science & Technology (2009NC001).
Materials Chemistry and Physics, Vol.107 (2008), p.231
Materials review, Vol18 (2004), p.50 [3] Ying Yang, Chaobin Lai, Fuming Wang.
Journal of University of Science and Technology Beijing, Vol.14 (2007), p.501 [4] Senuma T.

Wen 1 1 College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China a Long2211@163.com, bchendfu@cqu.edu.cn.
Material Science and Technology.
Materials Science and Technology.
International Materials Reviews..
Materials Scinence and Technology.

This study presents the design and accuracy testing of an open-loop control system for an Arduino-based robotic arm, featuring a 3D-printed body made from PLA+ material.
This research focuses on the development and accuracy testing of an open-loop control system for a robotic arm built with Arduino microcontrollers and a body constructed from PLA+ 3D printing material.
The absence of feedback hardware reduces material and production costs, while the simpler control algorithms lower the computational requirements.
Otto, “Usercentred design in industrial collaborative automated systems,” Proceedings of the Estonian Academy of Sciences, vol. 70, no. 4, 2021, doi: 10.3176/proc.2021.4.10
Ashrafiuon, “Asymptotic Solution and Trajectory Planning for Open-Loop Control of Mobile Robots,” Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME, vol. 139, no. 5, 2017, doi: 10.1115/1.4035169

Liu: Journal on Communications, Vol. 31 (2010), p.109-114 [7] M.
Su: Journal of Networks, Vol. 5 (2010), p. 475-483 [9] F.
De Roeck: Lecture Notes in Computer Science, Vol. 4628 (2007), p. 13-24 [19] F.
Matzinger: Science, Vol. 12 (2002), p. 301-305 [24] F.
Sun: submitted to Journal of Advanced Materials Research (2010)

Acknowledgment The projects are supported by the natural science foundation of shaanxi province (No.2010JM6012) and China postdoctor (No. 20100471835).
Hua: Some recent investigations and new progresses in the application of boundary element methods, Journal of Tsinghua University, Vol.41(4/5) (2001), p. 89-93 [5] G.P.
Shi: Predicting dynamic behaviors of a whole machine tool structure based on computer-aided engineering, International Journal of Machine Tools and Manufacture, Vol.43 (2003), p. 699-706 [6] Y.W.
Zhang: Research on dynamic characteristics of assembled thin plates structure by BEM, Key Engineering Materials, Vol. 297-300 (2005), p. 2368-2374

Generally there are A, C stages for Brittle materials and A, B stages for salt layers, in which stage B is last for a longer time.
SPE11374, 1983 [3] Yang Chunhe, Daemen J J K, Yin J1altHua: International Journal of Rock Mechanics and Mining Science, 1999, 36 (2):233-242 [4] TANG Jiping, Wang Shuqi, Chen Mian, The drilling theory and practice in salt rock stratum [M].
(In Chinese) [5] Lou Yishan, Li Zhonghui, Zhang Chunyang et., Chinese Journal of Rock Mechanics and Engineering, 2008, 27 (S2): 3570-3574.

In fact, the RCC can be looked as a composite material.
The shape function, the relation of stress and strain and the methodologies of calculating interlaminar Shear Stress have been proposed. 3-D composite layered elemen Fig.1. 8 node composite layered element It assumes that all material orientations are parallel to the reference plane (Figure.1), further, any warped layers act as if they are flat and parallel to the reference plane.
Acknowledgements This work was financially supported by the ShanDong Science Programe (2010GFS10607).
L., A Non-Conforming Element for Stress Analysis, International Journal for Numerical Methods in Engineering, 1976(10): 1211-1219
Journal of DaLian university, 1996(6): 301-306.