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Compression Behavior of Pa-12 Pipes Under Large Displacements: Crimson Publishers

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Compression Behavior of Pa-12 Pipes Under Large Displacements by De Almeida LS, de Oliveira TA, Maurício MHP and d’Almeida JRM* in Crimson Publishers: Materials science Polyamide (PA) pipes are being increasingly employed in fluid distribution networks . Most of these pipes is used in underground networks, where overloads can cause large deflections. Excessive displacement can lead to product failure and can cause surface cracks and leakage of the fluid being transported. This condition can be maximized if the pipe is aged due to effects of the environment or of the fluid itself. In this work, the effect of aging PA pipe segments by their exposure to hot water is presented and discussed. The deformation characteristics of the material before and after aging are evaluated. The results indicate plasticization of the pipes due to exposure to hot water, and, thus, the loads required to cause a specific degree of compression, characterized by reduction of the pipe’s diameter, a...
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Crimson Publishers-Analysis of Hybrid Power Train System Based on Degree of Freedom

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Analysis of Hybrid Power Train System Based on Degree of Freedom by Kun Zhao in  Evolutions in Mechanical Engineering The hybrid power train is one of the most important technologies that have been developed to satisfy the challenging fuel economy and emission standards. A suitable configuration of hybrid power train should not only meet the requirements of vehicle kinematics and dynamics, but also meet the requirement of fuel economy and emission. For this purpose, a hybrid power train system should contain multiple power sources so that the speed and torque of the power sources can be properly distributed to achieve high system efficiency. To achieve optimal distribution of speed and torque, the system should have more speed DOF and torque DOF. Therefore, the hybrid power train system can be analyzed based on the viewpoint of degrees of freedom. https://crimsonpublishers.com/eme/fulltext/EME.000504.php For more open access journals in Crimson Publishers please ...
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Design and Manufacture of an Electrolyser for its Application in Obtaining Hydrogen as Fuel_Crimson Publishers

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  Design and Manufacture of an Electrolyser for its Application in Obtaining Hydrogen as Fuel by Jorge Ivan Cifuentes_ Alkaline Electrolyser Abstract  This paper shows the most important aspects of the operation of an alkaline electrolyser which was sized to adapt to the fuel demand conditions of an internal combustion engine under idle speed and considering a stoichiometric mixture. In the experimental part, the hydrogen flow rate generated by the electrolyzer was determined under nominal conditions, using a flowmeter based on the principle of gas collection in water. With the built electrolyser, a capacity factor of 2.62ml W-1 min-1 and a flow rate of 3.29lpm were obtained which was sufficient for the satisfactory operation of the engine. With the development of this project was proved that an ordinary internal combustion engine can operate using only hydrogen as fuel, without the need for any modification in its factory design. https://crimsonpublishers.com/eme/fullte...
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