A5100453252- Aluminum Alloy Microstructure Properties
- Advanced Fiber Optic Sensors
- Smart Grid and Power Systems
- Optimal Power Flow Distribution
- Ultrasonics and Acoustic Wave Propagation
- Power Systems and Renewable Energy
- Advanced Sensor and Control Systems
- Advanced Welding Techniques Analysis
- Gear and Bearing Dynamics Analysis
- Rock Mechanics and Modeling
- Geoscience and Mining Technology
- Energy Load and Power Forecasting
- Advanced machining processes and optimization
- Geotechnical Engineering and Underground Structures
- Inertial Sensor and Navigation
- Advanced Decision-Making Techniques
- Geomechanics and Mining Engineering
- Aluminum Alloys Composites Properties
- Additive Manufacturing Materials and Processes
- Smart Grid Energy Management
- Microgrid Control and Optimization
- Indoor and Outdoor Localization Technologies
- Geophysics and Sensor Technology
- Metallurgy and Material Forming
- Titanium Alloys Microstructure and Properties
Shandong University of Science and Technology
2017-2024
Xi'an University of Science and Technology
2018-2021
Abstract Bolt is an important connection in underground construction and monitoring its stress characteristics essential to evaluate the effectiveness of bolt. The strain information collected along a rock bolt reveals long‐term movement mass, which greatly helps toward disaster prevention risk warning. Grooving on surface embedding optical fiber one main methods for anchorage performance distribution around engineering. In this study, Pulse Pre‐Pumped Brillouin Optical Time Domain Analysis...
To make an appropriate compromise between the solving speed and solution quality for a distribution network with distributed generations (DGs), efficient reconfiguration algorithm based on vector shift operation (VSO) considering DGs is proposed. The nodal equivalent power model influence of established. Power moment selected as index to decide whether load flow calculation or VSO should be conducted. In former case, all bus voltages are updated then regarded initial condition VSO. latter...
Reactive power optimization of distribution networks is traditionally addressed by physical model based methods, which often lead to locally optimal solutions and require heavy online inference time consumption. To improve the quality solution reduce burden, this paper proposes a new graph attention method directly map complex nonlinear relationship between graphs (topology loads) reactive scheduling schemes networks, from data-driven perspective. The network tailored specifically problem...
Monitoring the load level of rock bolts is great importance for assessing risk. Based on mechanical transmission mechanism grouting bolts, bolt pull-out test was carried out in lab. The performance under loading measured using pulse-pre-pump Brillouin optical time domain analysis (PPP-BOTDA) and fiber Bragg grating (FBG) sensing technologies. distribution characteristic axial stress along analysed combination with measurements obtained by two relative standard deviation repeatability errors...
Planetary gearbox is widely used in various low‐speed machines due to its large transmission ratio. However, the gears a planetary are prone mechanical faults complex dynamic heavy load. Vibration frequencies caused by an early tooth root crack of sun gear usually difficult accurately extract, so fault diagnosis one main challenges reliability. In this paper, simplified model proposed, and then rigid‐flexible coupled dynamics whole system constructed. By numerical simulation, obtained. A...
A method of measuring the MOA potential distribution new method:Wireless-current is presentedin this paper, and developed based on Wireless-currentmethod measurement system was solved by using thetraditional to measure optical fiber test in each point signal acquisition isnot synchronized, elicit many other issues are difficult. This could beobtained simultaneously arrester node applied value thetest voltage, realize digital measurement, through application for 500 kVzinc oxide surge test,...
AA6061 aluminum alloy was pretreated by laser welding pretreatment before friction stir (FSW). Compared with the pretreatment-free FSW process, improves tensile strength of joint 22.3%, up to 84% base metal (BM). Calculations shows that strengthening is mainly provided grain boundary enhancement, which associated smaller joints obtained. As a result electron backscatter diffraction (EBSD), nugget zone grains have an average size 0.95 mm, 32.6% more refined than obtained using alone (1.41 μm).
The operation situation evaluation is the basis of awareness in active distribution network (ADN). In order to reflect satisfaction system state, a comprehensive method for ADN based on expert experience proposed. considers safety, economics and environment ADN. A piecewise linear function which can change rule indicators used normalize indicators, it relationship between cost different intervals. reference values are determined by experience. Analytic hierarchy process determine weight each...
Inertial navigation systems are widely used in autonomous motion systems. Because they do not rely on external information or radiate energy to the outside, accuracy of inertial depends their initial alignment accuracy, and errors accumulate over time. The research progress technology is summarized from two aspects this paper: compensation algorithms error models, calibration method. results show that speed has been basically reduced 0 attitude position output also reached a high level. But...
Abstract Because of various patterns deep-water inrush and complicated mechanism, accurate prediction mine water inflow is always a difficult problem for coal geologists. In this paper, the channel divided into four basic diversion structures: aquifer, rock fracture zone, zone goaf. The fluid flow characteristics in each conducting structure were investigated by laboratory test multi-structure multi-system coupling analysis model different structures are established to describe whole process...