In recent years, solar energy has attracted significant attention due to its abundance and renewable nature. This study utilized the heat transfer module in COMSOL Multiphysics 6.1 to investigate the temperature distr...
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In this study, the YSZ thermal barrier coatings (TBCs) with gradient porosity was developed through design the spraying parameters. The effect of the gradient porosity on the bond strength and thermal shock life was i...
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Ideal tissue engineering scaffolds need interconnected pores and high porosity to enable cell survival,migration,proliferation,and ***,obtaining a high-resolution structure is difficult with traditional one-temperatur...
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Ideal tissue engineering scaffolds need interconnected pores and high porosity to enable cell survival,migration,proliferation,and ***,obtaining a high-resolution structure is difficult with traditional one-temperature control fused deposition modeling(FDM).In this study,we propose a dual-temperature control method to improve printability.A numerical model is developed in which the viscosity is a function of temperature and shear rate to study the influence of two different temperature control *** tests are used to assess filament formation and shape fidelity,including one-dimensional filament printing,deposition at corners,fusion,and *** using dual-temperature control,the width of the deposited poly(ε-caprolactone)filament is reduced to 50μ*** comparative results of both the experimental method and numerical simulation suggest that the dual-temperature control FDM can manufacture spatially arranged constructs and presents a promising application in tissue engineering。
Forward dynamics simulations can significantly reduce the development costs associated with new wearable assistive devices by minimizing the need for prototyping and experimentation. However, current model-based metho...
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In the current situation, environmental monitoring and disaster mitigation become a concern. There are many developed robot in different type for enviromental issue, but some robot has limitation on coverage area. To ...
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In this study,a Grey-box(GB)model was developed to predict the optimum mass flow rates of inlet streams of a Shell and Tube Heat Exchanger(STHE)under varying process *** Exchanger Design and Rating(Aspen-EDR)was initi...
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In this study,a Grey-box(GB)model was developed to predict the optimum mass flow rates of inlet streams of a Shell and Tube Heat Exchanger(STHE)under varying process *** Exchanger Design and Rating(Aspen-EDR)was initially used to construct a first principle model(FP)of the STHE using industrial *** Genetic Algorithm(GA)was incorporated into the FP model to attain the minimum exit temperature for the hot kerosene process stream under varying process conditions.A dataset comprised of optimum process conditions was generated through FP-GA integration and was utilised to develop an Artificial Neural Networks(ANN)***,the ANN model was merged with the FP model by substituting the GA,to form a GB *** developed GB model,that is,ANN and FP integration,achieved higher effectiveness and lower outlet temperature than those derived through the standalone FP *** of the GB framework was also comparable to the FP-GA approach but it significantly reduced the computation time required for estimating the optimum process *** proposed GB-based method improved the STHE's ability to extract energy from the process stream and strengthened its resilience to cope with diverse process conditions.
mechanical agitation in baffled vessels with turbines plays a vital role in achieving homogeneous fluid mixing and promoting various transfer ***,designing vessels with optimal energy efficiency and flow dynamics is e...
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mechanical agitation in baffled vessels with turbines plays a vital role in achieving homogeneous fluid mixing and promoting various transfer ***,designing vessels with optimal energy efficiency and flow dynamics is essential to enhance operational performance and eliminate flow ***,the present research focuses on a numerical investigation of the impact of inclined slots with different angles installed at the side-wall of a cylindrical vessel equipped with a Rushton *** study explores power consumption and vortex size while considering various rotation directions of the impeller with different rotation *** numerical simulations are conducted for Reynolds numbers ranging from 104 to 105,using the RANS k-εturbulence model to govern the flow inside the stirred vessel,accounting for mass and momentum *** results have shown that the installation of slots reduces power consumption and vortex size compared to conventional vessel ***,increasing the slot angle from 0 to 32.5°further reduces energy consumption and vortex size,especially with negative rotation *** the other hand,increasing the Reynolds numbers leads to a decrease in power consumption and an increase in vortex *** present research therefore proposes a design for con-structing Rushton-turbine stirred vessels offering optimal operation,characterized by reduced energy consumption and minimized vortex size.
The chaotic secure communication issue is addressed in this research using event-triggered extended high-gain observers. The communication system is based on two-channel communication, in which the transmitter system ...
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Deployment structures with latch capabilities have different applications in various engineering fields owing to their convenience in foldable storage,diverse configuration properties,and controllable deformation path...
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Deployment structures with latch capabilities have different applications in various engineering fields owing to their convenience in foldable storage,diverse configuration properties,and controllable deformation pathways[1].This latch capability is typically achieved through one of the three approaches:conventional latch designs[2],energy-dependent multistable structures[3],and metamorphic mechanisms.
Ceramic cutting inserts are a type of cutting tool commonly used in high-speed metal cutting ***,the wear of these inserts caused by friction between the workpiece and cutting inserts limits their overall *** order to...
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Ceramic cutting inserts are a type of cutting tool commonly used in high-speed metal cutting ***,the wear of these inserts caused by friction between the workpiece and cutting inserts limits their overall *** order to improve the tool life and reduce wear,this study introduces an emerging method called magnetic field-assisted batch polishing(MABP)for simultaneously polishing multiple ceramic cutting *** polishing experiments were conducted under different conditions,and the wear characteristics were clarified by cutting S136H *** results showed that after 15 min of polishing,the surface roughness at the flank face,edge,and nose of the inserts was reduced to below 2.5 nm,6.25 nm,and 45.8 nm,***,the nose radii of the inserts did not change significantly,and there were no significant changes in the weight percentage of elements before and after ***,the tool life of the batch polished inserts was found to be up to 1.75 times longer than that of unpolished *** findings suggest that the MABP method is an effective way to mass polish ceramic cutting inserts,resulting in significantly reduced tool ***,this novel method offers new possibilities for polishing other tools.
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