A5102890373- Structural Health Monitoring Techniques
- Ultrasonics and Acoustic Wave Propagation
- High-Temperature Coating Behaviors
- High Entropy Alloys Studies
- Non-Destructive Testing Techniques
- Advanced Combustion Engine Technologies
- Lubricants and Their Additives
- Biodiesel Production and Applications
- Bladed Disk Vibration Dynamics
- Diamond and Carbon-based Materials Research
- Additive Manufacturing Materials and Processes
- Control Systems and Identification
- Catalytic Processes in Materials Science
- Probabilistic and Robust Engineering Design
- Advanced Power Amplifier Design
- Advanced Control Systems Optimization
- Metal and Thin Film Mechanics
- High Temperature Alloys and Creep
- Advanced Adaptive Filtering Techniques
Ningxia University
2023-2025
Structural damage detection is crucial for ensuring the safety and durability of engineering systems. Conventional methods based on frequency response function (FRF) in linear systems tend to fail when small early occurs engineered structures. Nonlinear output functions (NOFRFs), which are extensions FRF weak nonlinear systems, have been applied system analysis. In this study, we extended structural method NOFRFs multi-degree-of-freedom beam Due presence multiple modal frequencies these...
CrN and diamond-like carbon (DLC) coatings are deposited on the surface of 431 stainless steel by direct current magnetron sputtering technique. The morphology, micro-structure, hardness, friction, wear properties CrN, CrN/DLC multi-layer composite DLC investigated scanning electron microscopy, X-ray diffraction, Raman spectroscopy, photoelectron nanoindentation tester, scratch friction tester. results show that single coating is very rough for columnar crystal structure with preferred...
For shaft parts, 45 steel has been widely used due to its favorable mechanical properties and low cost. However, the relatively wear resistance of limits application. In this work, high-entropy alloy FeCrCoMnSix (x = 0, 0.3, 0.6, 0.9, 1) coatings were prepared on surface a substrate using laser cladding technology improve performance steel. The effect Si element microstructure tribological property these is investigated. results show that structure FeCrCoMn mainly an FCC + HCP dual-phase...
Nonlinear Output Frequency Response Functions (NOFRFs), which are a one-dimensional extension of the linear Function (FRF) to nonlinear cases, have been introduced for system characterization and compensation. The evaluation NOFRFs is accomplished by solving series difference or differential equations, known as Generalized Associated Linear Equations (GALEs). However, derivation GALEs often includes numerous recursive symbolic calculations, posing significant challenges in both practical...