A5101612529- Non-Destructive Testing Techniques
- Microstructure and Mechanical Properties of Steels
- Welding Techniques and Residual Stresses
- Ultrasonics and Acoustic Wave Propagation
- Microwave Engineering and Waveguides
- Power Systems and Renewable Energy
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Material Properties and Failure Mechanisms
- HVDC Systems and Fault Protection
- Photonic Crystal and Fiber Optics
- Industrial Vision Systems and Defect Detection
- Geophysical and Geoelectrical Methods
- Engineering Diagnostics and Reliability
- Hydraulic and Pneumatic Systems
- High-Voltage Power Transmission Systems
- Seismic Imaging and Inversion Techniques
- Magnetic Properties and Applications
- NMR spectroscopy and applications
- Material Properties and Applications
- Silicon Carbide Semiconductor Technologies
- Cavitation Phenomena in Pumps
- Titanium Alloys Microstructure and Properties
- Laser Material Processing Techniques
- Optimal Power Flow Distribution
East China Jiaotong University
2024
South China University of Technology
2014-2023
Tohoku University
1998-2004
Francis turbines, being widely used in hydropower plants, operate under different loads which significantly affect their hydraulic characteristics and structural dynamics. It is essential to carry out the flow-induced dynamics analysis of large prototype turbines a wide load operation range optimize performance, ensure reliability, prevent mechanical failure. This work analyzes turbine with rated power 46 MW. Computer-aided design (CAD) models unit are first constructed, including fluid...
This paper proposes a novel method for identifying the number and positions of cracks reconstructing crack shapes. It assumes that two-dimensional scanned eddy-current testing (ECT) signals obtained from steam generator tube are picture image, then template matching with help genetic algorithms predicts cracks. The present employs superposition nonlinear scaling technique signal profile on length verified by numerical simulation. satisfactorily predicted. crack-shape reconstructions...
Abstract Single‐crystal core multimaterial fibers have a wide range of applications in optics. Though some with single‐element crystal cores been manufactured successfully, the preparation binary and multielement crystals is limited by segregation or stoichiometry deviation during thermal drawing recrystallization process. This paper presents new method, several times laser, to solve problem fibers.
Purpose This paper aims to overcome the limitations of low efficiency, power density and strong electromagnetic interference (EMI) existing pulsed melt inert gas (MIG) welding supply. So a novel simplified implementation digital high-power MIG supply with LLC resonant converter is proposed in this work. Design/methodology/approach A simple parallel full-bridge structure used design high current, arc voltage, open-circuit voltage wide range loads, by effectively exploiting variable load...
The chaos particle swarm optimization algorithm was presented to solving optimal power flow. proposed OPF considers the total cost of generators as objective functions. To enhance performance algorithm, a premature convergence strategy proposed. can be divided into two parts. In first part, method is introduced judge convergence, while another part provides an advance improve with searching solution in feasible region. control used prevent will obtain starting values for initial before...
It becomes common practice to reduce a large-scale power grid into simplified one using transient stability simulator and have it modeled on electromagnetic transients programs. However, the procedure of network reduction may produce negative resistance, which result in some problems simulation. This paper firstly demonstrates that resistance will probably lead numerical instability And then forming mechanism during Gaussian Elimination is revealed. Several schemes for elimination are...
硬 度 の Fig． I Stepbar specimens of cast irons Tablel Chemical cemposition stepbar NoNo． 17Addition Cu ， Sn 0． 5％Cu O． 025％SnNo ． 18Addition