Journal articles: 'Aluminum Pipe'

1

Gao, Yong Tao, and Xiao Hu. "Material Test on Aluminum Alloy Round Pipe for Building Structure." Advanced Materials Research 194-196 (February 2011): 981–84. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.981.

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With the unilateral extending test on 4 teams*12 aluminum alloy round pipes, compressing test on 4 teams*4 pipes and repeating extending/compressing test on 4 teams*4 pipes, get the stress-strain relationship of the aluminum alloy round pipe, and get the elastic modulus f0.1 and f0.2. At the same time, get the conclusion that the damaging type is brittleness. The test result is the foundation for follow-up studies on the loading capacity of the aluminum alloys.

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Hangai, Yoshihiko, Yukiko Nakano, Takao Utsunomiya, Osamu Kuwazuru, Soichiro Kitahara, and Nobuhiro Yoshikawa. "Aluminum Foam-Filled Pipe Using Thin-Wall Aluminum Pipe Fabricated from Plate." Journal of the Japan Institute of Metals 80, no. 6 (2016): 386–89. http://dx.doi.org/10.2320/jinstmet.j2016006.

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Sun, Youhong, Xiaofeng Wang, Baochang Liu, Dali Ding, and Qingnan Meng. "Inverse solution to heat transfer coefficient during heat assembly of aluminum alloy drill pipes." Advances in Mechanical Engineering 9, no. 7 (July 2017): 168781401771497. http://dx.doi.org/10.1177/1687814017714970.

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With the rapid development of oil and gas industry, as well as geological exploration industry, the requirements on properties of aluminum alloy drill pipes are increasing. During heat assembly of aluminum alloy drill pipes, the cooling process inside the pipes has a direct impact on the connection performance of pipes. Thus, study of the convective heat transfer coefficient between the cooling water and the internal wall of aluminum alloy pipes is important. Conventional algorithms cannot easily solve the problem of determining the heat transfer coefficient at the complex structure of aluminum alloy drill pipes. Therefore, this article conducts a heat assembly experiment between aluminum alloy drill pipes and steel joints to obtain adequate, accurate temperature data. Based on these experimental data and an inverse heat conduction model, the heat transfer coefficients during the heat assembly process are determined by a finite element program and the differential evolution algorithm. The correlation curve between the cooling water flowrate and the convective heat transfer coefficient obtained in this article is important in the accurate prediction of heat transfer capacity and temperature field distribution during heat assembly at different cooling water flowrates. The analysis results show that the heat transfer coefficients are nonlinear functions of cooling water flowrates. The temperature is highest at location A1 and gradually declines backward along the axis of the drill pipe. The heat transfer coefficient gradually declines backward along the axis of the drill pipe. The increasing flowrate of cooling water will cause the convective heat transfer coefficient along the axis of the drill pipe to escalate irregularly.

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Sriram, V., and B. Kanimozhi. "Investigation of the Effect of Different Materials on Uniform Heat Distribution Over a Solar Collector Pipe." Journal of Computational and Theoretical Nanoscience 17, no. 5 (May 1, 2020): 2021–23. http://dx.doi.org/10.1166/jctn.2020.8842.

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Collector pipe used in solar power plant is a device for converting water from ambient temperature to the raised temperature which in turn used to rotate turbine blades. The raise in temperature is not that much when compared to thermal or nuclear power plant, so researches are going on for improving the heat carrying capacity of collector pipes. The productivity in pipe directly depends on the factors such as solar radiation incident on it, temperature distribution over the pipe, surrounding temperature, material of the pipeline used, and thickness of the pipe. When comparing to all of such parameters, the temperature distribution over the pipe is the main parameter which determines the performance of the collector pipe. For a particular type of solar collector pipe, the temperature distribution is function of length with day variation of solar incidence over it. In this work a collector pipe of length 2.2 m and 7 cm diameter is fabricated and tested under standard laboratory conditions for the uniform heat dissemination over the pipe. For keeping up the uniform temperature over the collector pipe, it is necessary to wound the pipe with metals like copper, aluminum. The results show that the heat distribution over the pipe is increased in case of copper when compared with aluminium.

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Itoh, S., A. Kira, Z. Y. Liu, and S. Nagano. "Deformation of Metal Pipe due to Underwater Shock Wave." Journal of Pressure Vessel Technology 121, no. 2 (May 1, 1999): 176–80. http://dx.doi.org/10.1115/1.2883682.

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The deformation process of the metal pipes, accelerated by underwater shock wave resulting from the underwater detonation of explosive inside the metal pipe, was investigated by means of both the optical observation experiment and the numerical calculation. The expanding deformation of metal pipes was experimentally viewed by both framing and streak photographic means. A computer code based on the arbitrary Lagrangian and Eulerian (ALE) method was used to perform the numerical simulation on this problem. It has confirmed that the deformations of the metal pipes obtained from the streak photographs agree quite well with those obtained by the numerical calculation. The experimental and numerical results both show that the expanding velocity along the radial direction in aluminum pipe is larger than that in copper pipe, under the same loading conditions; and also, the time needed to reach the maximum radial velocity is shorter in aluminum pipe than in copper pipe. The calculations clearly indicate that the metal pipes are able to acquire a maximum expanding velocity along the radial direction in a very short time after the beginning of the action of underwater shock wave, and also this maximum velocity value only decreases a little in the later time period.

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Mao, Jian She, You Hong Sun, and Bao Chang Liu. "Research on One-Shot Process of Hot Extrusion Forming Technology for Aluminum Alloy Drill Pipe." Applied Mechanics and Materials 415 (September 2013): 623–26. http://dx.doi.org/10.4028/www.scientific.net/amm.415.623.

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Aluminum alloy drill pipe used in deep drilling has great potential and broad field of application. Unlike steel drill pipe production method, aluminum alloy drill pipe is manufactured using forward extrusion in the horizontal hydraulic extrusion press to extrud internal/external upset ends with variable cross-section, and form an assembly line to produce aluminum alloy drill pipe. In this experiment, using 55MN double-action extrusion press on 7075 aluminum alloy tubing to get variable cross-section on one-shot, the extruded pipe body are in good surface quality wihtout cracks, laying the foundation for the forming technology of variable cross-section of aluminum alloy drill pipe.

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Zhu, Wen Feng, Jie Wang, Pei Jian Lin, and Bing Yang Zhang. "Numerical Simulation of Influence of Different Heat Source Models on Temperature Field of Aluminum-Alloy Ring Weld Seam." Applied Mechanics and Materials 456 (October 2013): 216–19. http://dx.doi.org/10.4028/www.scientific.net/amm.456.216.

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Ring-seam joint pipe is more and more widely used in advanced auto-body assembly. However, Aluminums higher conductivity, higher convection coefficient, oxidability and low plasticity in high temperature compared to convectional low carbon steel make its welding numerical simulation much more difficult. Thermal simulation is the fundamental of aluminums coupled calculations of thermo-elasto-plastic for welding. In this paper, a pipe joint of ring seam for ZL114 aluminum alloy is numerically modeled based on birth-death element method and moving-heat-source function loading method. The simulation results agree well with the experiments, which shows that the double ellipsoid heat source model is most suitable for MIG welding simulation of aluminum alloy.

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Ma, Shao Ming, Chuan Liu Wang, and Yun Lin Fan. "Effect of In Situ TiB₂ Particles on the Grain Size and Mechanical Properties of 7075 Aluminum Alloy." Materials Science Forum 1035 (June 22, 2021): 102–7. http://dx.doi.org/10.4028/www.scientific.net/msf.1035.102.

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Light-weight and high-strength aluminum alloy drill pipes are potential and promising to replace traditional steel drill pipes. In this study, the grain size and mechanical properties of aluminum alloy drilling pipe materials reinforced by in-situ TiB2 particles were studied. The results showed when reinforced by in-situ TiB2 particles the grain size of aluminum alloy materials was refined from 155 m to 57 m and ultimate tensile strength was increased from 590 MPa to 720 MPa. Besides, the results also indicated that the friction coefficient was reduced from 0.99 to 0.50 and thus the abrasion resistance of 7075 aluminum alloy was enhanced by 34 %. This study provided theoretical basis for the application of light-weight and high-strength aluminum alloy drill pipes in directional drilling and ultra-deep wells.

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Wu, Hai Bao, Ji Zhen Li, De Fu Li, De Gui Liu, and Guo Qiang Chai. "Microstructures and Properties of Spinning for Silicon Carbide Particle Reinforced Aluminum Composite." Materials Science Forum 944 (January 2019): 571–80. http://dx.doi.org/10.4028/www.scientific.net/msf.944.571.

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In this paper, 15% SiCp/2009A1 composites were subjected to multi-pass hot spinning experiments. The principle of the microstructure and properties of the materials was studied with the increase of thinning rate. The microstructures, interfaces, precipitates and their properties of the tube, which were in the states of spinning, spinning and solution heat treatment were analyzed and discussed.The research shows that it is possible to prepare spinning pipe with good shape and smooth surface by taking use of the spinning process of this paper. During the power spinning process, the force of the rotary wheel to the pipe causes the billet to produce two-way deformation, and the axial and tangential grains are obviously elongated and the flow line is formed.There are mainly Al, SiC, CuAl2and Mg2Si phases in the tube, and the spinning deformation does not change the phase composition of the composites, but the SiC distribution can be more uniform and the oxide film on the surface of the aluminum particles is broken, as a result that the oxygen element will cluster at the interface.The solution heat treatment after spinning can greatly improve the yield strength and tensile strength of SiC/Al composites with a slight decrease in plasticity. The spinning process used in this paper can not only form a composite pipe with a smaller diameter and thinner wall thickness, but it can still be applied when the diameter of the pipe blank becomes larger and the wall thickness becomes thicker.Through the research on spinning process and microstructure, the feasibility of spinning process for preparing aluminum matrix composites pipes was explored, which provided technical and theoretical support for the preparation and processing of Particulate reinforced aluminum matrix composites (PRAMCs) pipes for aviation and aerospace applications.

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10

Nakanishi, Eitoku, Masayuki Hyono, and Seijiro Maki. "Development of Axially Splitting Method for the Pipe Materials with the Cutting Tool." Advanced Materials Research 1017 (September 2014): 350–54. http://dx.doi.org/10.4028/www.scientific.net/amr.1017.350.

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A simple processing method for splitting pipes in the axial direction using a cutting tool was investigated. The special tool developed in this study was pressed into the pipes in the axial direction, and the pipes were split very smoothly without any lubricant. This cutting method did not form fine chips, did not produce a significant heat effect on the inner wall surface. The splitting experiment was carried out with pipes constructed of aluminum and stainless steel. The outer diameters of the pipes were approximately 50 mm, and the thicknesses of the wall varied from 1 to 3 mm. The aluminum pipes were split very smooth by the tool, and curled strip-shaped chips were created by the splitting. On the other hand, the stainless pipes were greatly deformed, making them difficult to cut. Therefore, it was necessary to prevent deformation of the pipe by attaching an outer tool. The outer tool made it possible to cut stainless steel pipes.

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11

Li, Feng, and Duan Feng Han. "Erosion Experimental Study on Organ-Pipe Nozzles in Air." Advanced Materials Research 602-604 (December 2012): 1667–71. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.1667.

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Experiment of aluminum block erosion using organ-pipe nozzle was carried out in air. The erosion effects of water jet were used to evaluate the performance of organ-pipe nozzle. The experiment and corresponding data were used to analyze the effects of nozzle configuration, jet pressure, standoff distance. Results have shown that the organ-pipe water jets are much more effective in aluminum block erosion.

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Bai, Li, and Tan Liu. "Research on Different Heat Transfer Characteristics of the Dirt on the Pipe." Applied Mechanics and Materials 644-650 (September 2014): 5179–82. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.5179.

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In this study, the dirt adhered on the tubes of different materials (copper alloy tube, stainless steel pipe, polyethylene-aluminum composite pipe) were studied by the scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, PCR amplification, DGGE electrophoresis analyzers. Experimental results show that the microorganism in dirt on the copper alloy tube is mainly shuttle-type bacteria, and the distribution is dense. Stainless steel pipe’s dirt colony is assembling with long bacilli and cocci, polyethylene-aluminum composite pipe’s dirt is the large bacilli and density cocci. Three kinds of dirt in the pipe contains inorganic crystals with SiO2 and CaCO3, and the same type of element, but the content is differences, polyethylene-aluminum composite pipe have greater richness of microbial species, a copper alloy tube’s dirt is of little microorganisms.

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13

Cheng, Po Jen, David T. W. Lin, Chi Chang Wang, Wu Man Liu, and Chai Wei Chang. "Design of the Cooling Module of LEDs Based on the Aluminum-Acetone Flat Plate Heat Pipe." Applied Mechanics and Materials 764-765 (May 2015): 244–48. http://dx.doi.org/10.4028/www.scientific.net/amm.764-765.244.

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The waste heat generated by high power LEDs is hardly effectively dissipated, therefore, it results in a serious problem in the luminous efficiency. The most important issue of the LED research is to find a potential design of heat removal and solve the problem of LED over-heating. The purpose of this study is to design the LEDs combined with the cooling module of the aluminum-acetone flat plate heat pipe by the experiment for the high efficiency of heat removal. The aluminum-acetone flat plate heat pipe is innovative proposed by our team. The high power LEDs with and without heat pipe cooling module is compared. The heat removal efficiency of the cooling module of the aluminum-acetone flat plate heat pipe reaches 77% and drops the junction temperature of LED about 36 °C. The cooling module of the aluminum-acetone flat plate heat pipe has proven to be effective in solving the heat concentration problems associated with the LED chips. In short, the phase change cooling module will apply on the electronic component of high heat concentration for more effective cooling method.

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14

Potter, John C. "Aluminum‐Coated Corrugated Steel‐Pipe Field Performance." Journal of Transportation Engineering 116, no. 2 (March 1990): 145–52. http://dx.doi.org/10.1061/(asce)0733-947x(1990)116:2(145).

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15

Wang, Xiao Hong, Zheng Wei Peng, Gao Xu Li, Yuan Hua Lin, and Hai Lun Wang. "Effect of Extrusion Texture on Mechanical and Electrochemical Properties of Aluminum Alloy Drill Pipe." Materials Science Forum 913 (February 2018): 157–67. http://dx.doi.org/10.4028/www.scientific.net/msf.913.157.

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Aiming at the special service environment of aluminum alloy drill pipe, in this paper, the influence of extrusion texture on the mechanical and electrochemical properties of aluminum alloy drill pipe was studied. And the macroscopic textures of longitudinal profile and cross section of aluminum alloy drill pipe were tested, and the tensile, compressive and impact mechanical properties were tested, followed by immersion and electrochemical testing. The results show that the texture which 2A12T4 aluminum alloy drill pipe contains is <001> and <111> along the extrusion direction and <223>, <101> in the transverse direction. The test results of mechanical properties show that the extruded texture will affects the mechanical properties of material. When the cross section and longitudinal profile samples of 2A12T4 were soaked in 3.5% NaCl solution at 25°C, 60°C and 90°C, their corrosion resistance are different. The pits of transverse specimens exhibit a dispersed distribution and that of longitudinal specimens are distributed along the extrusion direction.

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Xia, Tian Dong, Xiao Li Liu, Qing Lin Li, and Wei Yuan Yu. "The Brazing of Copper Pipe and Aluminum Pipe Based on the 4R." Advanced Materials Research 476-478 (February 2012): 721–25. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.721.

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The copper-aluminum pipe has been widely used in the refrigeration industry. With the increases of the scrap rate in electronic products, the recycle and remanufacturing of Cu-Al brazed joints becomes the focus. In this study, introduced the green welding, which will improve the recycle ability of the Cu-Al brazed joints from technological design source. The experiment results shows that it is possible to improve the remanufacturing and the mechanical properties of Cu-Al brazed joints with the appropriate lap length,and it complies with the green welding design concept when the lap length of Cu-Al brazed joints is 5 mm.

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WATANABE, Takehiko, Akira SUTOU, Atushi YANAGISAWA, Shizuyo KONUMA, Osamu OHASHI, and Takayuki YOSHIOKA. "Joining of An Iron Pipe to An Aluminum Pipe by Zinc Plating." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 18, no. 4 (2000): 572–79. http://dx.doi.org/10.2207/qjjws.18.572.

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18

KAWAI, Gosaku, Koichi OGAWA, Hiizu OCHI, and Hiroshi TOKISUE. "Friction weldability of various aluminum alloy pipe to SUS304 stainless steel pipe." Journal of Japan Institute of Light Metals 49, no. 2 (1999): 83–88. http://dx.doi.org/10.2464/jilm.49.83.

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Deng, Jiaquan, Yongshou Liu, Zijun Zhang, and Wei Liu. "Dynamic behaviors of multi-span viscoelastic functionally graded material pipe conveying fluid." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 231, no. 17 (April 4, 2016): 3181–92. http://dx.doi.org/10.1177/0954406216642483.

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In this paper, the dynamic behaviors of a multi-span viscoelastic functionally graded material pipe conveying fluid are investigated by dynamic stiffness method. The material properties of the functionally graded material pipe are considered as graded distribution along the thickness direction according to a power-law. Several numerical examples are performed to study the effects of volume fraction exponent, fluid velocity, internal pressure, and internal damping on the stability and frequency response of the fluid-conveying functionally graded material pipe. It’s found that the viscoelastic functionally graded material pipe exhibits some special dynamic behaviors and it could increase the stability significantly when compared with the aluminum and steel pipes. The numerical results also demonstrate that by the introduction of the functionally graded material, the stiffness of the piping system could be modulated easily by designing the volume fraction function. Therefore, if the dominant frequency contents of the external loads are known, a preferable design of the functionally graded material pipe to reduce the vibration is possible.

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Naggar, H. El, E. N. Allouche, and M. H. El Naggar. "Development of a new class of precast concrete pipes - an experimental evaluation." Canadian Journal of Civil Engineering 34, no. 7 (July 1, 2007): 885–89. http://dx.doi.org/10.1139/l06-171.

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Concrete pipes represent the backbone of the municipal storm and wastewater collection systems of Ontario, Canada. Industry and academia partnered on a research effort that aimed at developing new precast-concrete pipe products that provide added value to the final user in comparison with existing products. This paper describes a full-scale experimental evaluation of the design, manufacturing, and performance aspects of a "cellular" concrete pipe, a precast concrete pipe in which multiple continuous conduits were incorporated within its wall. Two fully-instrumented prototype segments of the proposed cellular concrete pipe were manufactured using standard dry-cast manufacturing procedures. The pipe segments were subjected to a D-load test to evaluate their structural performance. The observed structural performance was found to be comparable to solid-wall specimens, particularly when a four-conduit configuration was used. Of the six materials used as conduits, PVC and aluminum were found to perform the best. The presence of the conduits appears to delay the on-set of major cracks, thus increasing the D-load value. Key words: precast, concrete, pipe, experimental, conduit system, trenchless construction methods.

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Malyshev, Vladimir, Mikhail Gelfgat, Arseniy Scherbakov, and Alexey Alkhimenko. "Protection enhancing of threaded connections of light-alloy drill pipes against contact corrosion." E3S Web of Conferences 225 (2021): 03003. http://dx.doi.org/10.1051/e3sconf/202122503003.

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When using light-alloy drill pipes (LAIDP) with steel tool joints, the development of contact corrosion is observed under certain operating conditions. The value of corrosion mainly depends on the difference in electrochemical potential (ECP) of the contacting metals. One of the effective methods for increasing the corrosion resistance of aluminum alloys is the micro-arc oxidation (MAO) method. This is an electrochemical process in combination with micro-arc-discharges phenomena at the anode-electrolyte border, which allows forming ceramic coatings of aluminum oxides on the surface, including its high-toughness and wear-resistant phase - α-Al2O3 (corundum). MAO-technology is a highly efficient and environmentally friendly process. At the forming of such a coating on the threaded part and in the tool joint zone of the pipe, a barrier for contact corrosion between the steel tool joint and the surface of the aluminum pipe is created. In this work, contact corrosion on samples in a pair of 1953T1 aluminum alloy - 40KhN2MA steel in a 5% NaCl solution at 80 °C was investigated. The data obtained showed the effectiveness of using protective MAO-coating to reduce contact corrosion and increase the reliability of the tool joint threaded connection of LAIDP.

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Yan, Qing Song, Huan Yu, Zhi Feng Xu, Chang Chun Cai, Bo Wen Xiong, and Yu Hui Zheng. "Study on Size and Microstructure of Complex Cavity Aluminum Alloy Castings Formed by Pre-Burying Copper Pipe Core." Advanced Materials Research 97-101 (March 2010): 999–1002. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.999.

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The feasibility of especial technology which complex cavity aluminum alloy castings are formed by corroding pre-burying copper pipe core is discussed by researching on the size and microstructure of cavity formed by corroding pre-burying copper pipe core. The results indicate the size of cavity formed by corroding pre-burying copper pipe core is basically consistent with the original size of the castings, with a dimensional tolerance in permission scope which is about 0.01mm. Meanwhile, the microstructure of cavity wall formed by corroding pre-burying copper pipe core is identical with that of the castings without corrosion. Moreover, because the pre-burying copper pipe core is equal to the chilled iron, bringing cold effect, the crystal grain of cavity wall formed by corroding pre-burying copper pipe core are tinier. Therefore, the technology of using pre-burying copper core to form complex cavity of aluminum alloy casting is entirely feasible.

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Liu, Heng, Yu Qing Xiong, and Ji Zhou Wang. "Kinetics Study of Aluminum Deposition on Inner Wall of Pipes by Atomic Layer Deposition." Advanced Materials Research 482-484 (February 2012): 627–32. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.627.

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In this paper, feasibility of aluminium deposition on inner wall of pipes by atomic layer deposition was studied. Firstly, by solving kinetics equation of gas adsorption on the pipe inner wall, the time for the reactant to reach saturated adsorption on the wall was calculated. Secondly, according to the aluminium crystal structure, the thickness of each deposition cycle was obtained. Finally, the minimum aluminium thickness and number of atomic layer deposition cycles that can meet electromagnetic requirement of wave guide was calculated.

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Huang, Xu, Yajun Wu, Huaifeng Peng, Yaohu Hao, and Chenyang Lu. "Thermomechanical Behavior of Energy Pile Embedded in Sandy Soil." Mathematical Problems in Engineering 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/5341642.

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The traditional energy pile (solid energy pile) has been implemented for decades. However, the design of different kinds of energy piles is still not well understood. In this study, a series of model tests were performed on an aluminum pipe energy pile (PEP) in dry sandy soil to investigate the thermal effects on the mechanical behaviors of pipe energy pile. The thermal responses of the PEP were also analyzed. Steady temperatures of the PEP under different working conditions were also compared with that of the solid energy pile. Different loading tests were carried out on four pipe energy piles under three different temperatures of 5, 35, and 50°C, respectively. The bearing capacity change can be interpreted through the load-displacement curves. Experiment results were also compared with the solid energy pile to evaluate bearing capacities of the PEP and the solid energy pile under different temperature conditions. The mobilized shaft resistance was also calculated and compared with the solid energy pile data and the results show that the PEP has a similar load transfer mechanism with the solid energy pile. It could also be found that, for PEPs under working load, plastic displacement would appear after a whole heating cycle.

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Take, Koichiro, and Ralph L. Webb. "Thermal Performance of Integrated Plate Heat Pipe With a Heat Spreader." Journal of Electronic Packaging 123, no. 3 (April 1, 2000): 189–95. http://dx.doi.org/10.1115/1.1348010.

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The air flow rate available for cooling of notebook computers is very limited. Thus, notebook computer manufacturers desire a “passive” cooling method. Heat pipes are typically used to transport the heat from the CPU to a forced convection, air-cooled condenser. This paper describes a passive, keyboard sized aluminum Integrated Plate Heat Pipe (IP-HP) that has been developed for notebook computers. Analysis was performed to estimate the several thermal resistances in the heat pipe, including the effect of the vapor pressure drop. The modified design using a heat spreader at the evaporator significantly reduces the heat pipe resistance. Further work was done to evaluate the thermal contact resistance at the IP-HP/CPU interface. Test results show that the IP-HP can reject 18 W while maintaining the CPU 65°C above ambient temperature.

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Wang, Yanli, Qiaoyu Guo, Lucai Wang, and Hong Xu. "Evaluation of Compression Performance of APM Aluminum Foam-Polymer Filled Pipes Prepared via Different Epoxy Resin Bonding Processes." Advances in Materials Science and Engineering 2019 (September 15, 2019): 1–10. http://dx.doi.org/10.1155/2019/7978140.

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The composite structurehttp://mts.hindawi.com/update/) in our Manuscript Tracking System and after you have logged in click on the ORCID link at the top of the page. This link will take you to the ORCID website where you will be able to create an account for yourself. Once you have done so, your new ORCID will be saved in our Manuscript Tracking System automatically."?> with aluminum foam not only has the strength and toughness of the dense material but also reduces the weight of the component and increases specific deformation energy absorption performance. In this paper, advanced pore morphology (APM) foam elements are combined with thin-walled circular steel pipes by epoxy-bonding and epoxy foam-bonding processes to prepare composite circular pipes. The direct epoxy-bonding process using epoxy resin refers to coating the surface of APM spheres, whereas the epoxy foam-bonding process involves the mixing of the epoxy resin with the epoxy foaming agent and then coating the surface of APM spheres with this mixed epoxy resin. The compression performances and energy absorption performances were analyzed by quasistatic compression tests. Results indicate that the different bonding modes change the deformation mode of the specimen under compression. The epoxy foam-bonding APM composite pipe has a higher compression load level than the epoxy-bonding APM filled pipe. The epoxy foam-bonding APM composite pipe is superior to the epoxy-bonding APM composite and thin-wall hollow pipe. Hence, the combination of foaming and bonding of epoxy can be used as a new filling process for APM fillers.

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Hangai, Yoshihiko, Ryusei Kobayashi, Ryosuke Suzuki, Masaaki Matsubara, and Nobuhiro Yoshikawa. "Fabrication of Aluminum Pipe from Aluminum Chips by Friction Stir Back Extrusion." Journal of the Japan Institute of Metals and Materials 82, no. 2 (2018): 33–38. http://dx.doi.org/10.2320/jinstmet.j2017045.

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Gao, Yong Tao, Ting He, and Peng Bin Fu. "Stability Test on Aluminum Alloy Round Pipe for Structure." Advanced Materials Research 368-373 (October 2011): 253–57. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.253.

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For the aluminum alloy pipe stable form and buckling capacity, axis compressing test for 4 sections which each specification in three members, total 36 members, thus, we work out the ultimate bearing capacity for a little slenderness ratio alloy round pipe and relation between slenderness ratio and coefficient of stability, to provide test data for drawing pillars curve of the same type member. Through observed aluminum alloy compressing member changing with test process, record test phenomenon, and combined with instruments of test data record, providing the basis for further theoretical analysis.

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Zhang, Yue, Qi Dong Li, Tai Li Sun, and Xi Chuan Zhang. "Design and Testing of the Copper Pipe and Aluminum Pipe Welding Control System." Applied Mechanics and Materials 33 (October 2010): 84–87. http://dx.doi.org/10.4028/www.scientific.net/amm.33.84.

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The copper - aluminum pipe has been widely used in the refrigeration industry. And the welding quality becomes the focus. A PLC control system was developed to accurately control the resistance welding process of the Cu-Al pipe. The welding voltage was adjusted by a couple of silicon controlled rectifiers (SCR). To restrain the effect of network voltage fluctuation on the welding heat generation, it was obtained that the experimental relationship of the angle of flow and the network voltage, and fitted to a quadratic polynomial equation. Therefore, the control system can calculate the exactly the angle of flow value according to the current network voltage. The experiment results show that the error of the welding heat generation is limited in 5% when the network voltage fluctuates in the range of 380V ±10%. And the SEM and EDS analyzing results suggests that the welding seam length is more than 5mm, and there is hardly eutectic composition.

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Yue, Zhang, Han Li, Sun Taili, Li Qidong, and Zhang Xichuan. "Automatic Control System of Copper Pipe and Aluminum Pipe Butt Resistance Welding Machine." Procedia Engineering 15 (2011): 613–17. http://dx.doi.org/10.1016/j.proeng.2011.08.114.

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Hao, Cheng Gang, De Zhi Li, and Jian Min Zeng. "Research on Porous Sprayer for Refining of Aluminium Melt." Advanced Materials Research 418-420 (December 2011): 1856–59. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.1856.

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The relationship among the transfer coefficient of hydrogen, the size and the moving velocity of bubbles has been obtained according to the transfer model of hydrogen in aluminum melt. The experiments were carried out to invetstigate the degassing efficiency of a porous sprayer immersed in the molten aluminum. The results indicate that refining of molten aluminum can be conducted with a porous sprayer that was immersed in the melt at one end and was connected with inert gas at another end through a pipe. The refining efficiency is affected by number of bubbles or size of bubbles and by floating speed of bubbles. The hydrogen concentration in aluminium melt decreases with the increasing of the spraying time. In the condition of 0.6 m3/h flowing rate and spraying time of 10 minutes, the removal rates of hydrogen and impurities are about 60 percent and 68 percent，respectively for A357 casting aluminium alloy.

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Yoo, C. K., K. J. Kim, and S. T. Won. "Biaxial Compressive Deformation Characteristics of Round Aluminum Pipe." Transactions of Materials Processing 21, no. 2 (April 1, 2012): 89–95. http://dx.doi.org/10.5228/kstp.2012.21.2.89.

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INAGAKI, Toshiyuki, Norio TAKATSUJI, Satoshi MURAKAMI, and Kouki KURODA. "301 CAE model of Aluminum Rectangular Extruded Pipe." Proceedings of the Materials and processing conference 2009.17 (2009): _301–1_—_301–2_. http://dx.doi.org/10.1299/jsmemp.2009.17._301-1_.

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Kagan, L. S., V. I. Ivanova, G. M. Fain, I. A. Belyashova, and S. Yu Klepachevskaya. "Texture of aluminum alloy pipe with internal ends." Metal Science and Heat Treatment 29, no. 2 (February 1987): 142–45. http://dx.doi.org/10.1007/bf00667529.

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35

MITSUNOBU, Yuki, Koichi KAIZU, Masahiro KUSAKA, and Masaki KIMURA. "Investigation for Energy Absorption Characteristics of Square Pipe Filled with Aluminum Circular Pipes." Proceedings of the Materials and Mechanics Conference 2016 (2016): PS—07. http://dx.doi.org/10.1299/jsmemm.2016.ps-07.

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36

Kumar, Vootla Ashok. "A Composite Surface Formation during Friction Surfacing for Aluminum Pipe Internally Coated With Zinc." Bonfring International Journal of Industrial Engineering and Management Science 4, no. 2 (May 30, 2014): 90–95. http://dx.doi.org/10.9756/bijiems.4825.

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Kotani, Yuji, Hisaki Watari, and Akihiro Watanabe. "Increase Characteristics of Local Wall Thickness of a Pipe during Die Forming." Advanced Materials Research 320 (August 2011): 456–61. http://dx.doi.org/10.4028/www.scientific.net/amr.320.456.

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In recent years global warming has become a worldwide problem. Reduction of carbon dioxide emissions is one of the most important issues also in the automobile industry. This weight reduction technology is important even if applied to electric vehicles rather than gasoline vehicles, as reduction of energy consumption is an important issue. Plastic processing of hollow pipes is an important technology for realizing weight reduction of automobile components. As an example of research into pipe forming there is the research by Ohashi et al. [1-2], who have carried out processing to enlarge pipe diameters using a lost core, which achieved suppressing reduction in wall thickness and greater pipe expansion than hydroforming. In this research, a method of increasing the wall thickness of pipe by press forming was investigated. The establishment of technology for controlling the wall thickness of pipe without buckling the pipe is an important technology for weight reduction of products. Using the finite element analysis method it was predicted that it is possible to increase the wall thickness of aluminum pipe with 2mm wall thickness by approximately 20% by hollow pipe press forming. Also, it was predicted that it is possible to increase the wall thickness by approximately 30% in places by eccentric pipe wall thickness increase. Also, the effect of the metal die which has a large effect on processing a pipe from a circular cylindrical shape to a rectangular tube shape was investigated.

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Kotani, Yuji, Shunsuke Kanai, and Hisaki Watari. "Characteristic Features of Thickness Change of Pipe during Die Forming." Advanced Materials Research 383-390 (November 2011): 2794–800. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2794.

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Recently the growing demand for light weight products with high strength has been increased by the rapid development of automobile and aircraft technology. Also, reduction of carbon dioxide emissions is one of the most important issues also in the automobile industry. The weight reduction technology is important even if applied to electric vehicles rather than gasoline vehicles, as reduction of energy consumption is an important issue. Plastic processing of hollow pipes is an important technology for realizing weight reduction of automobile components. As an example of research into pipe forming there is the research by Ohashi et al. [1-2], who have carried out processing to enlarge pipe diameters using a lost core, which achieved suppressing reduction in wall thickness and greater pipe expansion than hydro forming. The authors investigated into a method of increasing the wall thickness of pipe by press forming. Using the finite element analysis method it was predicted that it is possible to increase the wall thickness of aluminum pipe with 2mm wall thickness by approximately 20% by hollow pipe press forming. Also, it was predicted that it is possible to increase the wall thickness by approximately 30% in places by eccentric pipe wall thickness increase. Also, the effect of the metal die which has a large effect on processing a pipe from a circular cylindrical shape to a rectangular tube shape was investigated.

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39

Hangai, Yoshihiko, Ryusei Kobayashi, Ryosuke Suzuki, Masaaki Matsubara, and Nobuhiro Yoshikawa. "Fabrication of Porous Aluminum Filled Aluminum Pipe from Aluminum Recycle Chips by Friction Stir Back Extrusion." Journal of the Japan Institute of Metals and Materials 83, no. 8 (August 1, 2019): 288–91. http://dx.doi.org/10.2320/jinstmet.j2019013.

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Kaithari, Dinesh Keloth. "Development of Corrosion Resistance Coatings for Sea Water Pipeline." International Journal of Students' Research in Technology & Management 4, no. 2 (June 29, 2016): 24–29. http://dx.doi.org/10.18510/ijsrtm.2016.421.

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The pipelines that are used for transporting sea water to desalination plants are made of expensive steel alloys. However because of the salt content in water and also other atmospheric factors this pipe undergoes severe corrosion problem. This causes pits and holes in pipe surface making it useless and lead to huge replacement cost of pipes. Hence a way to control corrosion is needed.In this project use of different coatings to overcome corrosion is tested experimentally. Five types of coatings namely epoxy, aluminum, enamel, rubber, and chrome are coated on the samples prepared from actual pipeline used in the plant and the experimental results and analysis are summarized for finding the best coating for reducing corrosion of pipes. Among the five different coatings tested the rubber and epoxy coatings resulted with minimum corrosion rate and weight loss.

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Kotani, Yuji, Shunsuke Kanai, and Hisaki Watari. "Characteristics of Wall Thickness Increase in Pipe Reduction Process Using Planetary Rolls." Advanced Materials Research 430-432 (January 2012): 1241–47. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.1241.

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In recent years, global warming has become a worldwide problem. The reduction of carbon dioxide emissions is a top priority for many companies in the manufacturing industry. In the automobile industry as well, the reduction of carbon dioxide emissions is one of the most important issues. Technology to reduce the weight of automotive parts improves the fuel economy of automobiles, and is an important technology for reducing carbon dioxide. Also, even if this weight reduction technology is applied to electric automobiles rather than gasoline automobiles, reducing energy consumption remains an important issue. Plastic processing of hollow pipes is one important technology for realizing the weight reduction of automotive parts. Ohashi et al. [1-2] present an example of research on pipe formation in which a process was carried out to enlarge a pipe diameter using a lost core, achieving the suppression of wall thickness reduction and greater pipe expansion than hydroforming. In this study, we investigated a method to increase the wall thickness of a pipe through pipe compression using planetary rolls. The establishment of a technology whereby the wall thickness of a pipe can be controlled without buckling the pipe is an important technology for the weight reduction of products. Using the finite element analysis method, we predicted that it would be possible to increase the compression of an aluminum pipe with a 3mm wall thickness by approximately 20%, and wall thickness by approximately 20% by pressing the hollow pipe with planetary rolls.

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Howard, A. H., and G. P. Peterson. "Investigation of a Heat Pipe Array for Convective Cooling." Journal of Electronic Packaging 117, no. 3 (September 1, 1995): 208–14. http://dx.doi.org/10.1115/1.2792093.

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A combined experimental and analytical investigation was conducted to evaluate a heat pipe convective cooling device consisting of sixteen small copper/water heat pipes mounted vertically in a 4 × 4 array which was 25.4 mm square. The analytical portion of the investigation focused on determination of the maximum heat transport capacity and the resistance of the individual heat pipes. The resistance of each heat pipe was found to be 2.51 K/Watt, or more than 3 times smaller than the resistance produced by a solid copper rod with the same dimensions. The maximum predicted heat rejection for the module was over 50 Watts, or a power density in excess of 7.75 Watts/cm2. In the experimental portion of the investigation, two different modules were tested. The first module utilized ten circular aluminum fins mounted on the condenser end of each heat pipe to enhance heat rejection, while the second contained only the sixteen copper/water heat pipes. The effects of flow velocity, input power, and base plate temperature on the overall thermal resistance and the heat rejection capacity were determined, as well as the pressure drop resulting from each module. The finned heat pipe array was found to have a lower overall thermal resistance and thus, a higher heat rejection capacity, but also resulted in a significantly larger pressure drop than the array without fins. The results of the heat pipe array experiments were also compared with experimental and empirical results obtained from flow over a flat plate 25.4 mm square.

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TAKEMOTO, Tadashi, Masami MIZUTANI, Ikuo OKAMOTO, Tetsuo ABIKO, and Shousuke IWASAKI. "Effect of pipe diameter on fillet formation during brazing of aluminum pipe and sheet." Journal of Japan Institute of Light Metals 40, no. 5 (1990): 344–50. http://dx.doi.org/10.2464/jilm.40.344.

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Kawai, Gosaku, Koichi Ogawa, Ryoji Tsujino, Hiroshi Yamaguchi, and Hiroshi Tokisue. "Statistical Tensile Strength Characteristics of Aluminum Alloy Pipe and Steel Pipe Friction Welded Joints." Materials Science Forum 331-337 (May 2000): 1731–36. http://dx.doi.org/10.4028/www.scientific.net/msf.331-337.1731.

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Tanaka, Hiro, Mayuko Kimura, Masato Iimori, Yoji Shibutani, and Yang Liu. "Failure Criteria of Adhesive Joints between Aluminum Circular Pipes under Multiaxial Stress State." Key Engineering Materials 725 (December 2016): 383–88. http://dx.doi.org/10.4028/www.scientific.net/kem.725.383.

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In this study, we developed a new conceptual test method of adhesive joining using aluminum circular pipes with sloping bonded surfaces to evaluate the failure strength of the adhesive layer under a multiaxial stress state. In our experiment, we prepared several test specimens made of A5052 aluminum with cross-sectional surfaces possessing angles of inclination varying from 0–90 degrees. We then carried out uniaxial tensile tests, employing paired aluminum pipe halves joined by adhesives. From the load‒displacement curves, we estimated the first invariant of the stress tensor and the second invariant of the deviatoric stress tensor, and we applied two kinds of criteria, both of which effectively represent the failure stress of the adhesive joint. According to the failure criteria, the thickness-dependent strength of the adhesive layer and its power law are discussed.

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46

Zheng, M., J. Hu, H. P. Teng, and Y. Zhao. "On the evaluation of plastic buckling of pipeline bending." International Review of Applied Sciences and Engineering 8, no. 1 (June 2017): 25–35. http://dx.doi.org/10.1556/1848.2017.8.1.5.

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In the present paper, various formulae for evaluating critical buckling strain of bending pipeline are analyzed on basis of its actual nature, available test data or finite element calculation results. The available test data is from different resources, it provides a more objective comparison; Especially, the experimental bending buckling data of Corona et al. and Kyriakides et al. for Al-6061-T6 aluminum pipes with various D/t value, as well as the prediction of Minnaar’s FEM regressive formula for high grade steel pipe are reanalyzed to check the reasonability of the plastically elliptical cross-section model. It shows that the consequence of the plastically elliptical cross-section model is more reasonable than others for the critical buckling strain prediction of a pipe bending in most cases.

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Song, Ji Shun, Yun Tao Li, De Heng Du, Xu Ma, and Kang Yin. "Numerical Simulation of Eccentric Extrusion Form Bending Pipe Parts." Materials Science Forum 704-705 (December 2011): 1492–97. http://dx.doi.org/10.4028/www.scientific.net/msf.704-705.1492.

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Eccentric extrusion method is used in this paper，through this method achieved bending aluminum-alloy tube extrusion forming process. Used finite element method，achieved three-dimensional numerical simulation of bending aluminum-alloy tube in eccentric extrusion by DEFORM-3D finite element commercial software，analyzed velocity field distribution，material flow，squeezing pressure，stress and strain field distribution of the process；Introduce the mechanism of one step direct extrusion forming tube bending process，it will be of great guiding significance the actual die design.

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Zhu, Baozhong, Fan Li, Yunlan Sun, Qichang Wang, Yuxin Wu, and Zicheng Zhu. "The effects of additives on the combustion characteristics of aluminum powder in steam." RSC Advances 7, no. 10 (2017): 5725–32. http://dx.doi.org/10.1039/c6ra24911f.

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To develop the combustion characteristics of aluminum powder in steam, the ignition and combustion process of aluminum powder with different additives (KBH₄, ammonium perchlorate (AP) and NaCl) addition at different levels were studied using a transparent pipe furnace.

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Atak, Ahmet. "Analytical and Numerical Model of Aluminum Alloy Swaging Ring Design to Study the Effect on the Sealing for Piping Systems." Civil Engineering Journal 7, no. 1 (January 1, 2021): 107–17. http://dx.doi.org/10.28991/cej-2021-03091641.

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In various fields of engineering, the assembly and repair of hydraulic installations are accomplished by joining the pipes. In such applications, the ring swaging method is used to connect the fittings to the pipes by means of a hydraulic hand tool. The basis to develop a swaging tool relies on the knowledge of the design parameter that influence plastic deformation of the swaging ring. In addition to build control over the design parameters, it is necessary to join pipes under severe conditions such as cryogenic vacuum and constrained space which require an intact sealing. In this study, the effect of swaging ring designs on sealing and strength has been examined and different swaging methods have been investigated by finite element modeling methods. Based on the obtained results, the analysis methodology of ring swaging and the characteristic impact of swaging ring design on the sealing of pipe connection are shown. The prime novelty of the study is to report the impact of swaging ring design and geometry on sealing efficiency of the pipe connection. The results of the study open new avenues for the development of efficient tools for designing swaging rings. Doi: 10.28991/cej-2021-03091641 Full Text: PDF

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Kou, Zhi Hai, Min Li Bai, and Hong Wu Yang. "Thermal Performance of a Novel Flat Heat Pipe with Integral Micro-Grooved Wick for Energy Saving." Advanced Materials Research 648 (January 2013): 202–5. http://dx.doi.org/10.4028/www.scientific.net/amr.648.202.

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A novel flat heat pipe is put forward. The novel flat heat pipe is characteristic of its integral wick structure of microgrooves, which is made of a series of thin aluminum foils folded side by side. The thermal performance of the novel flat heat pipe under the different heat loads and incline angles has been investigated experimentally. It is found that the equivalent thermal conductivity of the novel flat heat pipe can be 12.3 times higher than that of the heat pipe material. Moreover, the novel flat heat pipe with integral micro-grooved wick has good temperature uniformity. The novel flat heat pipe can play a pronounced role in heat transfer enhancement, and be expected to be good candidates for thermal management of electronic devices.

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Journal articles on the topic 'Aluminum Pipe'

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