A5101809098- Nuclear Engineering Thermal-Hydraulics
- Nuclear reactor physics and engineering
- Nuclear Materials and Properties
- Fluid Dynamics and Mixing
- Heat Transfer and Boiling Studies
- Metallurgy and Material Forming
- Non-Destructive Testing Techniques
- Aluminum Alloy Microstructure Properties
- Microstructure and mechanical properties
- Ultrasonics and Acoustic Wave Propagation
- Smart Grid and Power Systems
- Risk and Safety Analysis
- Geophysical Methods and Applications
- Water Systems and Optimization
- Fluid Dynamics and Heat Transfer
- Advanced Algebra and Geometry
- Combustion and Detonation Processes
- Nuclear and radioactivity studies
- Minerals Flotation and Separation Techniques
- Titanium Alloys Microstructure and Properties
- Advanced Sensor and Control Systems
- Acoustic Wave Phenomena Research
- High Temperature Alloys and Creep
- Geoscience and Mining Technology
- Power Systems and Renewable Energy
Oregon State University
2015-2024
Hubei University of Technology
2021-2024
Changchun University
2024
University of California, Berkeley
2023
Central South University
2018-2020
Wuhan University of Technology
2016-2020
Shanghai Electric (China)
2019
Institute of Acoustics
2016
Electric Power Research Institute
2007-2010
Zhejiang University
2010
Early versions of artificial neural networks' ability to learn from data based on multivariable statistics and optimization demanded high computational performance as multiple training iterations are necessary find an optimal local minimum. The rapid advancements in performance, storage capacity, big management have allowed machine-learning techniques improve the areas learning speed, non-linear handling, complex features identification. Machine-learning proven successful been used...
The deformation mechanisms and dynamic softening behavior of a Ti–6Al–4V alloy with thick lamellar microstructures are studied by uniaxial hot tensile tests. true stress first rapidly reaches peak value because the rapid dislocations proliferation tangle, then gradually decreases due to raising amount. is mainly induced severe globularization α phases. phase always accompanied formation high‐angle grain boundaries (HAGBs). fraction globularized phases increases increasing temperature....
Deformation behavior and precipitation features of an Al-Cu alloy are investigated using uniaxial tensile tests at intermediate temperatures. It is found that the true stress drops with decreased strain rate or increased deformation temperature. The number substructures degree grain elongation decrease raised temperature rate. At high temperatures low rates, some dynamic recrystallized grains can be found. type precipitates influenced by heating process before hot deformation. content size...
The effects of solution time and cooling rate on microstructures mechanical properties 2219 Al alloy for a larger spun thin-wall ellipsoidal head are investigated. It is found that the Al2Cu phases greatly affected by time. content first decreases then stabilizes with increasing Moreover, transformation precipitates obvious. As increased from 35 min to 60 min, almost all transfer GP zones θ′′ phases. When further 110 some θ′ appear. Meanwhile, size increases, while density drops. These...
Electromagnetic ultrasonic Rayleigh waves are commonly used for detecting surface or near-surface defects, but they still exhibit the drawback of low energy conversion efficiency. In this study, based on Huygens principle and discrete point source method, a double curving meander line coils EMAT (DC-MLCs EMAT) which generate unidirectional focusing is designed. Firstly, simulation model transducer established using COMSOL Multiphysics. Then, impacts magnet coise defect detection efficiency...
To further simplify the bolt stress measurement process, feasibility of using a dual-mode electromagnetic acoustic transducer (EMAT) that excites both longitudinal and shear waves is investigated to achieve rapid accurate measurement. The propagation characteristics cylindrical guided in rod are studied by semi-analytical finite element (SAFE) model. Through combination theoretical formula simulation, nonuniform distribution axial directly used calculate time flight without building any...
The effect of fluid axial thermal conduction on one-dimensional liquid metal natural circulation and its linear stability was performed through nondimensional analysis, steady-state assessment, perturbation evaluation. Nyquist criterion a root-search method were employed to find the boundary both forward backward circulations. study provided relatively complete analysis for problems with consideration heat conduction. results suggest that in loop should be considered only when modified...
An electromagnetic acoustic transducer (EMAT) is suitable for measuring the propagation time more accurately without causing abrasion to during testing due principle of its excitation. This work designs a flux-concentrating EMAT with radial-flux-focusing permanent magnet significantly enhance static magnetic field strength. Through theoretical analysis and finite element simulation, two kinds coils are designed according concentration areas horizontal vertical components field. One used...
The influences of solution temperature (ST), as well the cooling rate, on α phases and mechanical properties a forged Ti-55511 alloy are investigated. It is found that morphology, size, content, distribution apparently affected by ST. With increase ST, content size discontinuous grain boundary (αGB) phases, globular (αg) lamellar (αl) decrease, while those secondary (αs) increase. αGB preferentially transform into β transition process basically finishes at about 800 °C. These transformation...
Pipelines are critical components in various industrial applications, responsible for the safe and efficient transportation of fluids gases. However, over time, these structures experience a reduction wall thickness due to prolonged service, which can significantly compromise their structural integrity. To address this issue, rapid non-contact method measuring pipe is proposed. This utilises angular velocity invariance circumferential SH1 (CSH1) guided waves, generated by wholly stepped...