Ran Li
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View article: Analytical Investigation of CFRP- and Steel Plate-Strengthened RC Beams with Partially Unbonded Reinforcement
Analytical Investigation of CFRP- and Steel Plate-Strengthened RC Beams with Partially Unbonded Reinforcement Open
This study investigates the flexural behavior of reinforced concrete (RC) beams strengthened with externally bonded Carbon Fiber Reinforced Polymer (CFRP) or steel plate (SP), with partial debonding between internal steel reinforcement and…
View article: Experimental Investigation of Very High Cycle Fatigue and Fatigue Crack Growth Behaviors of X17CrNi15-2 Stainless Steel
Experimental Investigation of Very High Cycle Fatigue and Fatigue Crack Growth Behaviors of X17CrNi15-2 Stainless Steel Open
Understanding the fatigue behavior of materials is essential for designing components capable of enduring prolonged use under varying stress conditions. This study investigates the high-cycle fatigue and fatigue crack growth characteristic…
View article: Deep learning for jet modification in the presence of the QGP background
Deep learning for jet modification in the presence of the QGP background Open
Jet interactions with the color-deconfined QCD medium in relativistic heavy-ion collisions are conventionally assessed by measuring the modification of the distributions of jet observables with respect to their baselines in proton-proton c…
View article: Tensile and Fracture Properties Evaluation of Additively Manufactured Different Stainless Steels via Small Punch Testing
Tensile and Fracture Properties Evaluation of Additively Manufactured Different Stainless Steels via Small Punch Testing Open
Laser powder bed fusion (LPBF) can fabricate hydraulic components with significant weight reduction, and in this study, small punch tests (SPTs) evaluated the tensile and fracture properties of four stainless steels (30Cr13, 316L, 15-5PH, …
View article: Two-dimensional magnetic circuit modeling and frequency domain calculation method for transformer cores considering the effect of air gap
Two-dimensional magnetic circuit modeling and frequency domain calculation method for transformer cores considering the effect of air gap Open
The lapped area of transformer core is an important source of transformer vibration and noise due to the presence of air gap resulting in structural discontinuity and complex distortion of magnetic field characteristics. In this paper, thr…
View article: Evaluation of Mechanical Properties and Micro-Mechanism of Alkali-Activated Material with CG Under Ultrasonic Treatment from a Fractal Perspective
Evaluation of Mechanical Properties and Micro-Mechanism of Alkali-Activated Material with CG Under Ultrasonic Treatment from a Fractal Perspective Open
To mitigate the adverse effects of particle agglomeration in alkali-activated coal gangue-based cementitious (AAM–CG) materials, ultrasonic treatment and fractal theory, combined with microscopic analysis techniques were employed to invest…
View article: Numerical Investigation on the Dynamic Sealing Performance of Stepseal Based on a Mixed-Lubrication Model
Numerical Investigation on the Dynamic Sealing Performance of Stepseal Based on a Mixed-Lubrication Model Open
The dynamic sealing performance of Stepseal® is vital to the reliability and remaining life of Stepseal. In this study, experimental and numerical investigations were performed for characterizing the dynamic sealing behavior of a typical S…
View article: High power narrow bandwidth picosecond PPLN-OPO
High power narrow bandwidth picosecond PPLN-OPO Open
A high power, narrow bandwidth, synchronously pumped PPLN optical parametric oscillator is demonstrated. By using a reflective volume bragg grating (RVBG), the signal laser wavelength is locked at 1908.1 nm while the bandwidth is compresse…
View article: A new fault diagnosis method for reciprocating piston pump based on feature fusion of CNN and transformer encoder
A new fault diagnosis method for reciprocating piston pump based on feature fusion of CNN and transformer encoder Open
Reciprocating piston pump is an important power equipment in coal mine production, so the research on condition monitoring and fault diagnosis of reciprocating piston pump is of great significance. It is challenging to extract fault inform…
View article: Revealing the Enhancement Mechanism of Alkali-Activated Rice Husk Ash on High Mud Content CSG Materials from the Fractal Perspective
Revealing the Enhancement Mechanism of Alkali-Activated Rice Husk Ash on High Mud Content CSG Materials from the Fractal Perspective Open
To address the detrimental effects of high mud content on cemented sand and gravel (CSG) materials, this study focuses on CSG materials with different contents of alkali-activated rice husk ash (RHA). The microscopic enhancement mechanism …
View article: Power Spectra of Velocity Fluctuations in Granular Heap Flow
Power Spectra of Velocity Fluctuations in Granular Heap Flow Open
This study used Speckle Visibility Spectroscopy to examine velocity fluctuations in a three-dimensional granular heap flow, where the mean velocity profile consists of a fast-flow surface layer and a creep layer beneath. The velocity spect…
View article: Numerical Simulation Analysis of Laser Ultrasonic Detection of Defects in Silicon Carbide
Numerical Simulation Analysis of Laser Ultrasonic Detection of Defects in Silicon Carbide Open
Silicon carbide (SiC) is widely used in power electronic devices and other fields, the defects of which can significantly impact its performance in device fabrication. Laser ultrasonic non-destructive testing (NDT) as a novel and effective…
View article: Mechanical Properties and Microscopic Fractal Characteristics of Lime-Treated Sandy Soil
Mechanical Properties and Microscopic Fractal Characteristics of Lime-Treated Sandy Soil Open
In order to reveal the intrinsic mechanism of the mechanical properties of lime-treated sandy soil from a microscopic perspective, triaxial tests were conducted to analyze the macroscopic mechanical characteristics of sandy soil with diffe…
View article: Damage Evolution Characteristics of Steel-Fiber-Reinforced Cellular Concrete Based on Acoustic Emission
Damage Evolution Characteristics of Steel-Fiber-Reinforced Cellular Concrete Based on Acoustic Emission Open
In order to investigate the steel fiber parameters on the damage characteristics and crack evolution of cellular concrete materials, uniaxial compression–acoustic emission combined tests were carried out on steel-fiber-reinforced cellular …
View article: Experimental and numerical study on valve dynamic impact contact characteristics and fault diagnosis of a reciprocating piston pump
Experimental and numerical study on valve dynamic impact contact characteristics and fault diagnosis of a reciprocating piston pump Open
With the increase in power and flow of emulsion pumps, pump valves are more likely to be damaged during long working hours, Therefore, it is important to ensure the reliability of pump valves at all stages. However, there are still some pr…
View article: Multi‐dimensional Feature Extraction Technology of Spontaneous Speech Based on Machine Learning: Early Identification of Alzheimer's Disease
Multi‐dimensional Feature Extraction Technology of Spontaneous Speech Based on Machine Learning: Early Identification of Alzheimer's Disease Open
Background Speech variations appear at early stages of Alzheimer's disease (AD) and are potential early indicators. However, the commonly used neuropsychological assessment scales as screening tools for cognitive impairments have limitatio…
View article: Analysis of Gravel Migration Patterns During Vibration Rolling and Their Impact on GCL Performance Based on DEM
Analysis of Gravel Migration Patterns During Vibration Rolling and Their Impact on GCL Performance Based on DEM Open
In this study, a multilayer composite rolling model consisting of a rolling wheel, a protective layer, a GCL, and a support layer was constructed by the discrete element method (DEM). Soil compaction and gravel migration, and their effects…
View article: Prediction of the Contact Behavior of Stepseals: Experimental and Numerical Investigations
Prediction of the Contact Behavior of Stepseals: Experimental and Numerical Investigations Open
The contact behavior of a stepseal affects its reliability and remaining life. In this study, experimental and numerical analyses were performed to investigate the contact behavior of a typical stepseal. Its dimensions and material propert…
View article: Evaluating the tensile properties of high-strength stainless steels using small punch testing
Evaluating the tensile properties of high-strength stainless steels using small punch testing Open
Accurately measuring the mechanical properties of high-strength stainless steels is of great significance for ensuring structural safety, predicting long-term performance and optimizing design. However, the standardized tensile test specim…