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The surface morphologies, chemical composition, phase composition, compactness, thickness and the corrosion resistance of porous anodic films prepared in the sulfuric electrolyte with different additives at 35°C were investigated by XRD, FESEM, EDS, drop method in this paper. The additives are including organic acids, polyhydric alcohols and rare earth (REE) salts. It is indicated that a porously anodic film with about 20 nm holes in diameter can be obtained by additives into the sulfuric electrolyte. The main chemical compositions of the anodic films are Al, O elements, and a small amount of S. The film after boiling water sealing is composed of boehmite phase (Al₂O₃·H₂O) and alumina (Al₂O₃). The corrosion resistance of the anodic film can be improved by the coupling effect of the additives. The mechanism is discussed.

Copper wire continuous annealing is a key process of the cable production line. The accuracy of the temperature control directly determines whether the quality of copper wire meets the requirements. In this paper, the fuzzy-PI compound controller was selected and the structure of the annealing temperature fuzzy-PI control system was designed based on temperature measurement. Through the simulation of traditional PI control system and the improved Fuzzy-PI control system, the results show that the Fuzzy-PI controller is better than traditional PI controller. It verifies the feasibility and effectiveness of the Fuzzy -PI controller and proves that Fuzzy-PI algorithm can be successfully applied to the copper wire continuous annealing temperature control system.

Semi-solid thixoforming process was applied to produce track shoe of 15%SiCp/2A14 composites. The thixoforming process optimization was simulated by using Deform 3D software. The effects of forging pressure, slug size and reheating temperature on formability of track shoe were investigated. The results showed that a track shoe with better integrity was prepared by optimizing the process, and its microstructure and mechanical properties could meet requirements.

This article is based on the theory of fractional calculus control, and put forward a kind of fractional order PI controller design method for lateral attitude control system of unmanned aerial vehicle (UAV) model. And the unit step response of the control system is analyzed in the simulation to improve the UAV flight control system stability and robustness. Use the controller parameter tuning method and combined with fuzzy reasoning to design IOPID controller, FOPI controller and fuzzy fractional order PI controller. Then, by exploiting Matlab, the frequency domain response and unit step response characteristics of the different control systems can be plotted. The results verified that the designed fuzzy fractional order controller for the attitude control system is effective.

This work surveys the latest advances in, and applications of, biomaterials, new functional materials, hydrogen and fuel-cell science, engineering and technology, environmental catalysis and environment-friendly materials, new energy materials, polymeric materials, mechanical behavior and fracture, thin films, etc. It not only offers a broad overview of the latest advances, but also provides a valuable summary, and references, for researchers in this field.

This work brings together the latest applications of, and advances in, CAD/CAM/CAE, energy storage and energy development, mining machinery manufacturing, new energy equipment and manufacturing, cloud manufacturing and extreme manufacturing, bio-manufacturing, enterprise informationization, integrated manufacturing systems, quality monitoring and control of manufacturing processes, measurement control technologies and intelligent systems, embedded systems, etc. This broad overview of the latest advances also provides a reference source for researchers in this field.

An experimental table of the heating system of phase change heat storage is built with thermal-storage tank packaging phase change material, which transferred heat with internal fluid. The flow rate, inlet temperature, outlet temperature of internal fluid and the temperature of heat storage material are measured. The influences on the properties of heat storage system are analyzed.

This paper proposes an effective genetic algorithm for the job-shop scheduling problem (JSP) to minimize makespan time. An effective chromosome representation based on real coding is used to conveniently represent a solution of the JSP, and different strategies for selection, crossover and mutation are adopted. Simulation experimental results have shown that the scheduling model using the algorithm can allocate jobs efficiently and effectively.

In the acidic oral environments containing fluoride ions, hydrofluoric acid (HF) would form and affect the color of Titanium porcelain crown, but there is a lack of information on how color is affected by this oral fluid. The purpose of this study was to investigate the effects of various artificial saliva simulating oral environments in the presence of fluoride ions with different pH value on the color of self-made dental opaque, body porcelain, belonging to the Na2O-K2O–MgO–CaO–Al2O3–SiO2 glass system. Disc-shaped specimens, 5 mm diameter and a 2-mm thickness, were made by firing. Specimens were immersed in artificial saliva in the presence of fluoride ions with different pH value for 7, 14, 21 days, and then the color of the specimens was compared with the color of the initial specimen. The interactions were present in L*a*b* values between pH value and the day of immersion. The changes in L*a*b* color data as the day of immersion and pH value increased were revealed, which can resulted in perceptual color changes in L*a*b* color parameters.