A5100326868- Surface Treatment and Residual Stress
- Metal Alloys Wear and Properties
- Microstructure and mechanical properties
- Biomimetic flight and propulsion mechanisms
- Aluminum Alloy Microstructure Properties
- Fluid Dynamics and Turbulent Flows
- Metal and Thin Film Mechanics
- Structural Behavior of Reinforced Concrete
- Erosion and Abrasive Machining
- Titanium Alloys Microstructure and Properties
- Remote-Sensing Image Classification
- Satellite Communication Systems
- Aerodynamics and Fluid Dynamics Research
- Antenna Design and Analysis
- Spacecraft Design and Technology
- Fluid Dynamics and Vibration Analysis
- Inertial Sensor and Navigation
- Metallurgy and Material Forming
- Mechanical stress and fatigue analysis
- Space Satellite Systems and Control
- GNSS positioning and interference
- Civil and Geotechnical Engineering Research
- Aerogels and thermal insulation
- Optical Polarization and Ellipsometry
- Advanced Welding Techniques Analysis
Changchun Institute of Technology
2025
China Academy of Space Technology
2023-2024
Peng Cheng Laboratory
2024
Beijing Institute of Technology
2024
Guizhou University
2023-2024
Guizhou University of Finance and Economics
2024
National Engineering Research Center for Compounding and Modification of Polymer Materials
2024
Beijing Jiaotong University
2024
Lanzhou University of Technology
2019-2023
Northwestern Polytechnical University
2009-2023
Extraordinary fretting fatigue endurance is critical for engineering structures prone to contact with expected long service lifetimes. Here, we propose a strategy achieve ultrahigh in titanium alloy. A special hierarchical structure, i.e. gradient amorphous-nanocrystalline grain/coarse grain, was designed TB8 alloy via surface severe plastic deformation, which forms an nanocomposite structure comprising of and nano-lamellae β α phase transformation upon repeated wear. The suppress cracks...
A Dy6 complex with centrosymmetric edge-to-edge assembly of Dy3 triangles showing toroidal arrangement the magnetic moments was encapsulated in a macrocycle.
In this study, the influence of nanocrystalline structure on plasma nitriding (PN) behavior 17-4PH steel and corresponding corrosion mechanisms under different treatments were systematically investigated. The results showed that structures introduced by ultrasonic surface rolling process (USRP) would affect nitrides morphology, composition distribution via accelerating element diffusion. fabricated could enhance resistance original plasma-nitrided steel, which was attributed to its various...
Herein, it is aimed to reveal the effect of annealing temperature on α microstructure parameters and mechanical properties Ti‐55531 alloy under multiple heat‐treatment process “solution (855 °C) + (700, 730, 760 aging (600 °C).” The characterized by using optical microscopy, scanning electron transmission microscope. In results, indicated that does not change volume fraction s phase alloy. as‐annealed precipitation‐free zone renucleates after treatment, resulting in a bimodal distribution...
The slotted wingtip structure of birds is considered to be the product improving flight efficiency in process evolution. It can change vortex and improve aerodynamic efficiency. This paper reports a numerical investigation wing configuration undergoing bio-inspired flapping kinematics (consisting plunging in-line movement) extracted from free-flying bald eagle wing. aim eluci-date collective mechanism flow generated by tips lift contribution each tip. Specifi-cally, objective study determine...
When light is reflected from object surface, its spectral characteristics will be affected by surface's elemental composition, while polarimetric determined the orientation, roughness and conductance. Multispectral imaging technique records both of light, adds dimensions to spatial intensity typically acquired it also could provide unique discriminatory information which may argument material classification techniques. But for sake non-Lambert change along with illumination angle observation...
To investigate the influence of alloying elements (Zn, Mg, and Cu) on structural dynamical properties liquid Al−9Si alloy, we conducted ab initio molecular dynamics (AIMD) simulations. Our results indicate that structure Al−Si−M ternary alloys is determined with a combination atomic radii mixing enthalpy, while dynamic are primarily influenced by electronic elements. Specifically, addition Cu promotes formation Al−Cu short-range order (SRO), Zn has higher propensity for Zn−Zn SRO. The SRO in...
Efficient and reliable thermal insulation for cryogenic propellant storage in orbit is an essential ingredient long-duration missions future space exploration. A new combinational composed of spray-on foam (SOFI) variable density multilayer (VD-MLI), suitable due to its excellent heat light quality. Based on the transfer calculation model SOFI/VD-MLI ground stages, variations total flux through with thickness SOFI VD-MLI, warm boundary temperature, medium were analyzed. Comparison between...
Deep T-section beams have been widely used in engineering structures due to their high bearing capacity, construction efficiency and economic benefits, while the current beam design theory can hardly interpret reasonably mechanical behaviors of deep beams. The performance features T-beam were investigated, involving strain distribution principal stress trace using experimental tests. Different near surface mounted (NSM) reinforcement schemes proposed for T-beams aiming at improving shear...
We develop a new synthetical model of high-power pulsed laser ablation, which considers the dynamic absorptance, vaporization, and plasma shielding. And corresponding heat conduction equations with initial boundary conditions are given. The numerical solutions obtained under reasonable technical parameter by taking YBa2Cu3O7 target for example. space-dependence time-dependence temperature in at certain fluence presented, then, transmitted intensity through plume, ablation rate different...
Bird wings have split primary feathers that extend out from the wing surface. This structure is called wingtip slot, which recognized as a product of bird evolution to improve flight performance. In this paper, numerical simulations based on RANS (Reynolds-averaged Navier–Stokes) equations are conducted examine and understand influence slots six at Re = 100 000. The overlapping grid method, driven by an in-house UDF (User Defined Function), used model motion bionic slotted wings. law...
Abstract Compared with pseudorange measurement, carrier phase tracking is much less noisy, which can provide accurate positioning solutions. The existing phase-based methods rely on precise ephemeris or base station, may cause poor real-time and increase complexity in the system. To simplify calculation model achieve navigation solutions a stand-alone receiver, new GPS/BDS based non-differential method proposed. Due to need estimate ambiguity terms of measurements, dimension state larger...
With the improvement of satellites’ maneuverability, agile earth observation satellites (AEOSs) can pitch and roll themselves to observe targets with longer visible time window (VTW), which enables more be observed while bringing greater uncertainties mission planning conflicts resources. Meanwhile, mega constellation networks (MCNs) provide powerful tools transmit massive data. In MCNs, AEOSs agilely access communication (CSs) by inter-satellite links (ISLs) offload Based on this...
With the improvement of satellites’ maneuverability, agile earth observation satellites (AEOSs) can pitch and roll themselves to observe targets with longer visible time window (VTW), which enables more be observed while bringing greater uncertainties mission planning conflicts resources. Meanwhile, mega constellation networks (MCNs) provide powerful tools transmit massive data. In MCNs, AEOSs agilely access communication (CSs) by inter-satellite links (ISLs) offload Based on this...
GH4169 superalloy has excellent corrosion resistance, high temperature strength, good machinability and stability.Therefore, was widely used in the manufacturing field of aviation equipment components. In this paper, as research material to analyze effects aging treatment thread rolling process sequence on metallographic structure, morphology, tension-tension fatigue life fracture morphology. The results showed that before can reduce grain size have its is higher than after process. And...