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Resistance Spot Welding between Copper Coated Steel and Aluminum Alloy Lihu Cui a, Ranfeng Qiub , Hongxin Shi, Yaomin Zhu School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471003, China a hekeda131@126.com, bqiurf1221@163.com Key words: Resistance spot welding, Aluminum alloy, Copper plating Abstract: Aluminum alloy A6061 and copper coated steel was welded by resistance spot welding with.
Experimental The materials used in this study were 1.0 mm thick plates of aluminum alloy A6061 and mild steel Q235.
Table 1 Chemical composition of materials (Mass %) Cr Cu Ti Mg V C P S Si Mn Fe Al A6061 0.04 0.3 0.15 1.0 — — — — 0.6 0.15 — Bal.
References [1] Ranfeng Qiu, Shinobu Satonaka, Chihiro Iwamoto, Effect of interfacial reaction layer continuity on the tensile strength of resistance spot welded joints between aluminum alloy and steels, Materials and Design. 30 (2009) 3686–3689
Welding Journal, 2004, 83(6): 188-195

The evaluation of video surveillance system can provide real and effective data material to the users and the decision makers for better design and improvement in the future.
Journal of Chinese People’s Public Security University.2006 (4) 94-97
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Treatment Dyeing Organic Wastewater by Titanium Dioxide Prepared with Ion Liquids For Environmental Protection Jie Yang1,a, Yilu Liu2*,b , Qihua Wu2,c 1 Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, China 2 College of Science, Foshan University, Foshan 528000, China a yangmao2001@126.com, b lyl1300@sina.com,c sky402690789@qq.com Corresponding author: YiLu Liu, lyl1300@sina.com Keywords: Titanium Dioxide; Nickel foam; electrolyze; ion liquid Abstract.
Ion liquid has become a new and indispensable kind of functional material and solvent whose electrochemical behaviors of substance can be studied, and it has also become a kind of binder and modifier which can support the electrolyte and can prepare and modify the electrode and Electrochemical Biosensor[2].
Experiment 1. materials 70PPI nickel foam, stainless steel coupon, dyeing wastewater from Foshan wastewater treatment center 2. methods Colored wastewater samples were collected from Foshan textile dyeing and printing industry located on Guangdong Province,China.
Journal of chemical industry and engineering, 2003, 24 ( 4): 39-41 [2] Liu Yan. ion liquid in electrochemical biosensor applications [J].
Journal of Harbin Institute of Technology, 2004, 36 ( 4) :450-455

It is obvious that from the strain value corresponding to 65% up to 100% of a yield strain there is a significant difference between recalculated value of a stress obtained by the individual material models that are usually used.
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Margetin, A Critical Review on Multiaxial Fatigue Life Estimation of Metallic Materials.
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Loza Yañez, “Effects on mechanical properties of recycled PET in cement-based composites,” International Journal of Polymer Science, vol. 2013, no. 1, pp. 1–7, 2013
Roman, “Mechanical properties of recycled PET fibers in concrete,” Materials Research, vol. 15, no. 4, pp. 679–686, 2012
Iyappan, “Polyethylene terephthalate bottle concrete slab system,” International Journal of Modern Trends in Engineering and Science, vol. 5, no. 2, pp. 36–39, 2018
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Choi, “Two-Way Flexural Behavior of Donut-Type Voided Slabs,” International Journal of Concrete Structures and Materials, vol. 12, no. 1, 2018

Selective Laser Melting combines CAD, optics, materials science and numerical control technologies for rapid manufacturing of metal parts by discrete deposition modeling principles.
This technology has a wide range of materials selection, high utilization of materials and simple process, and can quickly mold parts with complex shapes, truly achieve digital and intelligent processing, and formed metal parts possess excellent mechanical properties.
In recent years, the development of materials and processing technology of die steel is also very rapid.
Journal of University of Science and Technology Beijing. 1 (2011) 28-32
Journal of Heilongjiang Institute of Science &Technology. 1 (2013) 47-50

According to the related references [4], the wood material of Wenxing Lounge Bridge is Chinese fir and the strength and elastic modulus of the material could be decreased by a certain degree [5].
The degradation of wood material and effect of strong external force and unfavorable factors from environment or human accelerated the damages of bridge.
During the repair of Wenxing Lounge Bridge, the building technology and structural characteristics and material and using function and relevant codes should be combined to consider.
The research into the countermeasures of the protection and value-analysing of “legacy of the world”–the ancient lounge bridge in Taishun[J].Journal of Wenzhou University. 2005,18(4):34-38 [2] Zhang Jun.
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Moreover， it is easy to happen the phenomenon which the material rolls from the adhesive tape, so the belt conveyer's start acceleration generally must be controlled within 0.3m/s2.
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Introduction Zirconium oxide (ZrO2) is a technologically important material and widely used due to its attractive properties such as high refractive index, low absorption of light, transparent over a wide spectral range, large resistance against oxidation and excellent thermal stability [1,2].
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Limsuwan, “Comparison of Nanocrystalline TiO2 Films Prepared on Unheated Substrates Using Single- and Dual-Cathode DC Unbalanced Magnetron Sputtering Systems,” Japanese Journal of Applied Physics. 49(2010) 0511011-0511015
Swanepoel, Determination of the thickness and optical constants of amorphous silicon, Journal of physics E. 16 (1983) 1214-1222
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Simplified Model of Bolted-Joints Flange bolted-joints structure discussed in this paper is composed of two shells whose material is Q235.
Wen: Journal of Vibration Engineering, Vol. 16 (2003) No. 2, pp. 137-142
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