A5101578615- Aluminum Alloy Microstructure Properties
- Aluminum Alloys Composites Properties
- Innovative Energy Harvesting Technologies
- Advanced Computational Techniques and Applications
- Wireless Power Transfer Systems
- Metallurgy and Material Forming
- Advanced Algorithms and Applications
- Energy Harvesting in Wireless Networks
- Vibration and Dynamic Analysis
- Simulation and Modeling Applications
- Network Security and Intrusion Detection
- Advanced Sensor and Control Systems
- Industrial Technology and Control Systems
- Nuclear Materials and Properties
- Seismic and Structural Analysis of Tall Buildings
- Material Properties and Applications
- Structural Engineering and Vibration Analysis
- Bladed Disk Vibration Dynamics
- Hydrogen Storage and Materials
- Magnesium Alloys: Properties and Applications
- Building Energy and Comfort Optimization
- Power Systems and Technologies
- Structural Health Monitoring Techniques
- Hydrology and Watershed Management Studies
- Embedded Systems and FPGA Design
Storagenergy Technologies (United States)
2023
Xi'an University of Technology
2006-2023
Tsinghua University
2010-2021
Kyoto Institute of Technology
2018-2019
Beijing Institute of Aeronautical Materials
2014-2019
Tianjin University
2015
Wuhan University of Science and Technology
2003-2014
Modern Electron (United States)
2014
Ministry of Public Security of the People's Republic of China
2011-2012
Beijing Jingshida Electromechanical Equipment Research Institute
2010
Abstract This paper presents preliminary design guidelines specifically for diagrid tube structures composed of straight diagonals with gradually changing angles. A graphic approach to configurating a this type is introduced, two basic geometric variables involved, i.e. the bottom and top diagonal In terms both stiffness strength criteria, methodology calculating member sizes developed applied set height‐to‐width aspect ratios ranging from 3.6 9. The are designed various combinations angles...
Diagonal arrangement is a prerequisite for diagrid tube structures in preliminary design. Two scenarios made up of curved or varying-angle straight diagonals, all established by only two basic geometric variables, i.e. the bottom angle and top control arc diagonal, are evaluated under seismic wind loads. Approaches to configuring these types introduced graphically. A set composed diagonals with various combinations angles, height-to-width aspect ratios ranging from 3.6 9, investigated...
The microstructure evolution during homogenization of 2A66 Al-Cu-Li alloy was investigated by optical microscopy (OM), scanning electron (SEM), energy dispersive X-ray spectrometry (EDX), transmission (TEM) and differential calorimeter (DSC). results showed that the dendritic segregation can be found in ingot experimental alloy. Numerous eutectic phases observed grain boundary, distribution main elements along interdendritic region varied asymmetrically. It secondary phase Al 2 Cu....
Land-sea riverine carbon transfer (LSRCT) is one of the key processes in global cycle. Although natural factors (e.g. climate, soil) influence LSRCT, human water management strategies have also been identified as a critical component. However, few systematic approaches quantifying contribution coupled and anthropogenic on LSRCT published. This study presents an integrated framework coupling hydrological modeling, field sampling stable isotope analysis for quantitative assessment impact...
Effect of intermediate thermomechanical treatment on tensile properties at short-transverse direction, fracture mechanism and microstructure 2A97 Al-Li alloy thick plate were studied by testing, SEM, EBSD TEM.The results show that with the increasing compression deformation, strength elongation increase first then decrease slightly. The mode changes from quasi-cleavage to high energy ductile fracture. When deformation rises 20%, elongated structure are replaced a more uniform equiaxial...
An analytical method to obtain the natural frequencies of a cantilever beam under dry friction is described in this paper. The equations motion and an equivalent model are established using Lagrange first second kinds, respectively. Then expressing relationship between exciting force frequency acquired according equations. Lastly, based on input energy two models, we deduce expression that concerned with friction. proposed verified by numerical results reveals methods better consistency each...
High-performance ultrafine silver powder used as crystalline silicon solar cell front conductive paste was prepared by chemical liquid-phase reduction method using nitrate metal source, ascorbic acid reductant, and gelatin dispersant. The effects of reducing agent concentration, doses dispersant, PH value reaction solution temperature on the performance were studied. morphology, particle size dispersibility observed scanning electron microscope (SEM). distribution particles characterized...
In this paper, we study the phase transition property of an Ising model defined on a special random graph—the stochastic block (SBM). Based model, propose estimator to achieve exact recovery for SBM. The algorithm can be transformed into optimization problem, which includes case maximum likelihood and modularity. Additionally, give unbiased convergent parameters SBM, computed in constant time. Finally, use metropolis sampling realize verify phenomenon thfough experiments.
Abstract In this study, a more fine-grained spherical nanoscale zero valent iron (nZVI) with diameter of 20-50 nm was synthesized in ethanol-water mixed solvent. The structures and physical properties nZVI were characterized by transmission electron microscope, X-ray diffractometer analyzer. Reactivity the affirmed denitrification nitrate. removal efficiency nitrate presence 80 % within 1 h at optimal conditions. view this, is efficient to removing offers great potential other contaminants...
Abstract This paper presents a novel design of magnetically-sprung mechanical resonator for wideband vibration energy harvesting. In this design, magnet composite consisting two cylindrical magnets composed in repelling arrangement is used as moving mass, which magnetically suspended between ring magnets. configuration yields more significant variation stiffness shorter stroke compared with the previous resulting wider operation band even under small excitation.
Abstract This paper presents a design study of miniaturized broadband nonlinear vibration energy harvester (VEH) with piecewise-linear restoring force based on mechanically-sprung resonator stoppers. It is commonly recognized that VEH nonlinearly-sprung can show frequency characteristics while keeping its maximum power performance due to bent resonance peak. The be investigated in this consists magnet composite as mass moving through an induction coil, two planar springs, and mechanical...
Scanning electron microscopy (SEM) and transmission (TEM) were utilized to study the microstructure mechanical behavior of an Al-Cu-Mg alloy after tensile test at 125°C, 150°C, 175°C 200 °C, respectively. The yield strength ultimate decreased with increase temperature, while elongation increased firstly then decreased. S S′ precipitate tension elevated temperatures. When temperature was higher than 175°C, coarsens rapidly. alloys displayed a shear fracture features temperature. larger phase...
The effect of solution temperature on the solid solubility, microstructure and mechanical properties 2A66 Al-Cu-Li alloy was studied by optical microscopy (OM), scanning electron (SEM), transmission (TEM) tensile test. results show that with increasing from 480°C to 520°C,the amount residual phases decreased solubility increased obviously, while recrystallization hardly changed temperature. With above 530°C, almost did not change. 540°C, over-burnt obviously. Complete dissolution particles...
With the in-depth study on blast furnace iron-making process and operational characteristic of auxiliary materials in process, comprehensive coke rate’s main influencing factors based operation characteristics were found. Then, a BP neural network model was used to simulate mathematic mapping relationship between rate factors. Based established model, through setting lowest as goal using actual production data iron &steel company’s 6# ,a genetic algorithm method is adopted find best...
This paper presents a design study of miniaturized nonlinear vibration energy harvester based on mechanically and magnetically-sprung resonator for low-frequency application. The to be investigated consists moving magnet composite as mass, which is sprung by two planar springs fixed ring magnets. with spiral-like shape are respectively connected the both ends so that they can provide linear stiffness in compact size. Mechanical stoppers installed constrain deformation spring give hardening...
The microstructure and tensile properties of permanent-mould cast Mg-5wt%Sn-4wt%Cu alloy was investigated by transmission electron microscopy (TEM), scanning (SEM) test in this paper. result indicated that the microstructures as-cast samples consist 30-40 μm size primary solidification phase, dendrite Mg 2 (Cu,Sn) which is a network-like interdendritic eutectic intermetallic compounds along grain boundaries particle like (Sn,Cu) phases. Mg-5Sn-4Cu exhibit maximum ultimate strength yield...