A5101474596- Biomimetic flight and propulsion mechanisms
- Gyrotron and Vacuum Electronics Research
- Underwater Vehicles and Communication Systems
- Micro and Nano Robotics
- Advanced Surface Polishing Techniques
- Soft Robotics and Applications
- Heat Transfer and Boiling Studies
- Metal and Thin Film Mechanics
- Aerospace Engineering and Energy Systems
- Microwave Engineering and Waveguides
- Integrated Circuits and Semiconductor Failure Analysis
- Structural Analysis and Optimization
- Mechanical and Optical Resonators
- Optical Systems and Laser Technology
- Advanced Measurement and Metrology Techniques
- Particle accelerators and beam dynamics
Northeast Forestry University
2024-2025
Harbin Institute of Technology
2021
Institute of Electronics
2007-2009
Nickel–phosphorus (NiP) alloys have been widely used in many engineering fields such as aerospace, automotive, and optics; however, it is difficult to study the material removal mechanism microscopic size changes polishing process of nickel–phosphorus through simple experiments. In light these difficulties, there a need improve our understanding surface friction wear mechanisms NiP materials. present study, molecular dynamics simulations are employed for first time investigate mechanism,...
A new experimental evaluation method is presented for evaluating and comparing the heat dissipation capability of slow-wave structures (SWSs) helix traveling-wave tube (TWT). The practicality simplicity have been validated through tests in some components with different assembling processing methods, such as cold stuffing, shrink, hot insertion, molybdenum wrapping so on. Experimental results demonstrate that our can be used effectively conveniently to estimate compare thermal SWSs TWT
Compliant robotic fish can achieve a better swimming performance than rigid-bodied fish. Therefore, this article investigates the behavior of compliant based on new model that combines large-amplitude elongated-body theory with decoupled natural orthogonal complement matrices. The simulation reveals multi-order resonances are generated in tail-beat amplitude, forward speed, stride length, and transport efficiency when is driven at corresponding frequency. Moreover, resonant effects...
Fish propelled by body and/or caudal fin (BCF) locomotion can achieve high-efficiency and high-speed swimming performance, changing their motion to interact with external fluids. This flexural be prescribed through its curvature profile. work indicates that when the fish swims high efficiency, amplitude reaches a maximum at peduncle. In case of swimming, shows three maxima on entire length. It is also demonstrated that, Reynolds number in range 104–106, speed, stride length, Cost Transport...
This paper presents the study on thermal conduction reliability of helix traveling-wave-tube (TWT) slow-wave structure (SWS), considering two affecting factors, such as outside condition and manufacturing process. ANSYS has been used to analyze variation heat dissipation capability SWS under different conditions. Several experimental tests have implemented effect process SWS. The conclusions obtained are expected be a valuable aid manufacture TWT.
The effect of the iridium nanoparticulate film on heat dissipation capability vacuum device has been studied in this letter. In experimental tests, copper barrels slow-wave structures have deposited with normal-Ir and nano-Ir film, respectively. radiation emissivity coefficients differential materials accurately calculated using results, then applied computer simulation. agreement between results simulation is excellent, suggesting that enables much better performance than normal metal materials.
We developed an untethered robotic tuna featuring tensegrity joints for the purposes of simplifying design procedure, reserving enough internal space, reducing frictional loss structures and generating a relatively smooth fish body wave. To achieve these objectives, novel shell-like joint was introduced, paired with single-motor multiple-joint driving mechanism. The morphology matching method proposed to fit streamlined body, where deflection angles each were predetermined generate specific...
Over the past 30 years, researchers have developed X-ray-focusing telescopes by employing principle of total reflection in thin metal films. The Wolter-I focusing mirror with variable-curvature surfaces demands high precision. However, there has been limited investigation into removal mechanisms for X-ray mandrels, which are crucial achieving desired surface roughness and form accuracy, especially reducing mid-spatial frequency (MSF) errors. It is essential to incorporate flexible control...
The effect of a copper-embedded barrel on the performance helix slow-wave structure (SWS) has been studied theoretically and experimentally. heat dissipation capability cold-test characteristics SWSs with monel barrel, normal copper have analyzed compared. With its combination high mechanical strength good thermal conductivity, enables better than other types low RF losses.