A5024835842- High Entropy Alloys Studies
- Acoustic Wave Phenomena Research
- Vibration and Dynamic Analysis
- Electronic and Structural Properties of Oxides
- Ferroelectric and Piezoelectric Materials
- Power Transformer Diagnostics and Insulation
- Polydiacetylene-based materials and applications
- Structural Health Monitoring Techniques
- Microstructure and Mechanical Properties of Steels
- Advanced Materials and Mechanics
- Infrastructure Maintenance and Monitoring
- Thermal Expansion and Ionic Conductivity
- Photochromic and Fluorescence Chemistry
- Power Quality and Harmonics
- Geophysical Methods and Applications
- Railway Engineering and Dynamics
- Non-Destructive Testing Techniques
- Magnetic Properties and Applications
- High-Temperature Coating Behaviors
- Noise Effects and Management
- Hygrothermal properties of building materials
North China Electric Power University
2024-2025
State Grid Corporation of China (China)
2021-2025
China Electric Power Research Institute
2025
The dynamic identification of the deformation a noise barrier column is great significance to monitoring its health. At same time, maximum stress an important indicator for evaluation health status. Traditional contact displacement installs sensors on structure, requires lot wiring and data acquisition equipment, establishes relatively independent stable reference system. Affected by environment, wear, material aging, efficiency reliability are reduced. A method based digital image has...
High‐entropy perovskite ceramics have become a topic of interest due to their unique properties and compositional versatility. This study pioneers the development multifunctional high‐entropy by incorporating rare‐earth element samarium (Sm) into (Bi 0.4 Na 0.2 K Ba )TiO 3 matrix. The introduction Sm 3+ increases configurational entropy introduces photoluminescence activation centers. Our results show that 0.4− x with ≤ 0.12 retain pure phase exhibit enhanced dielectric relaxation...
The problem of vibration and noise in the iron core power transformers remains quite topical. Insofar as state‐of‐the‐art binding production adopt lamination method weft‐free adhesive tape, respectively, transformer is mainly attributed to silicon steel sheet (SSS) magnetostriction. In this paper, based on magnetostriction grain‐oriented SSS, an in‐depth analysis generation mechanism was performed. SSS microstructure observed, its magnetostrictive properties at different magnetic flux...
Abstract The burgeoning requirement for compact electronic devices has intensified research into lead‐free dielectric ceramics that offer superior recoverable energy storage density and efficiency at low electric fields. In this study, we report the synthesis of Nd 3+ ‐doped (Bi 0.4 K 0.2 Na Sr )TiO 3 perovskite via solid‐state reaction technique. synthesized adopted a tetragonal crystal structure. As concentration ions increased, both maximum constant ( ε m ) its corresponding temperature T...
ABSTRACT A series of low‐carbon fly ash cenosphere plates was prepared using solid waste based cementitious material as binder through a simple process; meanwhile, effects cenosphere's particle size and distribution on microstructure properties were investigated. In the range 20–200 mesh, decreases, sound absorption performance decreases while strength improves. Appropriate grading can effectively improve compressive strength, but it will lead to significant decrease in performance. Samples...
With the wide application of power electronic devices and nonlinear loads, resulting inter-harmonic pollution is becoming more serious in system. As important equipment systems, transformers have always been focus research. However, there are few studies on abnormal increase vibration noise caused by excitation. In this work, a transformer core measurement platform that can generate arbitrary excitations was built. The real-time displacement waveforms model under normal conditions were...
To suppress low frequency vibration and noise generated by power transformer in residential area achieve environment protection standards, a double-beam metamaterial is proposed, which fabricated through periodically coupling silicon steel sheet aluminum beams with Belleville quasi-zero stiffness spring (BQZSS). The can be assembled iron core of transformers as whole to obtain the design low-noise transformer. Performing static analysis, mechanical model BQZSS established relationship...
Abstract Recently, high‐entropy perovskites have attracted considerable attention due to their diverse chemical composition and multifunctionality. In this study, the approach was employed in a (Bi 0.4 Na 0.2 K Ba )TiO 3 matrix, Nd 3+ introduced enhance configurational entropy modify its dielectric ferroelectric properties. Notably, despite doping, all samples maintained tetragonal perovskite structure at room temperature. The increased with concentration, consequently leading gradual...