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- 저자 : Zhu Jingtao (검색결과 3 건)
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Zhu Jingtao,Liu Yang,Zhou Jianrong,Yang Zehua,Zhu Hangyu,Zhou Xiaojuan,Tan Jinhao,Cui Mingqi,Sun Zhijia 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.9
Neutron conversion detectors that use 10B-enriched boron carbide are feasible alternatives to 3 He-based detectors. We prepared boron carbide films at micron-scale thickness using direct-current magnetron sputtering. The structural characteristics of natural B4C films, including density, roughness, crystallization, and purity, were analyzed using grazing incidence X-ray reflectivity, X-ray diffraction, X-ray photoelectron spectroscopy, time-of-flight secondary ion mass spectrometry, and scanning electron microscopy. A beam profile test was conducted to verify the practicality of the 10B-enriched B4C neutron conversion layer. A clear profile indicated the high quality of the neutron conversion of the boron carbide layer.
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Lu Jingtao,Zhu Chengkun,Li Xin 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.5
With the continuous increase of electric multiple unit (EMU) train service life, the train will be out of operation, but there are still some parts on the train can work normally. When EMU trains operate in regenerative braking state, a large amount of energy will be returned to the traction grid. In this paper, the decommissioned train equipment is selected, and the energy conversion method is considered, and a new regenerative braking energy recovery and utilization method is proposed, which is composed of decommissioned power converters, traction motors and vortex spring energy storage devices using mechanical elastic energy storage. And the energy storage system is constructed by feasibility analysis. This method provides a new idea for the reuse of retired equipment.
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Simulation Research on Ice-Breaking Dynamics of Civil Aircraft Flap Mechanism Based on Measured Data
Binwen Wang,Zhu Cheng,Guoyan Qiang,Jingtao Wu,Zhanpeng Ren 한국항공우주학회 2024 International Journal of Aeronautical and Space Sc Vol.25 No.1
In the alpine environment, the flap movement of civil aircraft is easily affected by frozen ice. At present, there are few experimental data on the adhesion strength of frozen ice that can be used to simulate the ice-breaking load of civil aircraft flaps, and the temperature points do not meet the actual use scenarios. To study the dynamic change law of the flap motion mechanism when breaking ice under the condition of ground icing, this paper conducts icing adhesion strength tests at different icing temperature points that meet the actual use scene, and calculates the icing resistance moment under different working conditions according to the experimental data. The icing resistance moment under the condition is the simulation load input. By changing the icing width of the seam to simulate different icing conditions, the process of ice-breaking motion of the flap moving mechanism is simulated, and the general process method of the ice-breaking motion simulation of the moving parts of the civil aircraft is formed, which calibrates the ice-breaking load values of aircraft moving parts under various icing conditions. The research results show that the combination of measured data and dynamic simulation can obtain the variation law of driving torque in the ice-breaking motion of moving parts under various icing conditions, as well as the critical conditions of aircraft use. In addition, the validity and engineering practicability of the method in the anti-ice movement of the civil machine are verified.
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