A5100460520- Fatigue and fracture mechanics
- High Temperature Alloys and Creep
- Fire effects on concrete materials
- High-Temperature Coating Behaviors
- Laser-induced spectroscopy and plasma
- Probabilistic and Robust Engineering Design
- High Entropy Alloys Studies
- Metallurgy and Material Forming
- Non-Destructive Testing Techniques
- High-Velocity Impact and Material Behavior
- Energetic Materials and Combustion
- Tribology and Wear Analysis
- Engineering Structural Analysis Methods
- Structural Load-Bearing Analysis
- Analytical chemistry methods development
- Aluminum Alloy Microstructure Properties
- Laser Material Processing Techniques
- Ion-surface interactions and analysis
- Hydrogen embrittlement and corrosion behaviors in metals
- Additive Manufacturing Materials and Processes
- Atomic and Molecular Physics
- Lubricants and Their Additives
- Advanced Materials Characterization Techniques
- Material Properties and Failure Mechanisms
- Epoxy Resin Curing Processes
Henan University of Science and Technology
2023-2024
Nanjing Tech University
2020-2024
Shandong University
2022-2024
Shanghai University of Engineering Science
2021-2023
University of North Texas
2021
Beijing University of Technology
2009-2019
Development Research Center
2019
Jilin University
2016-2017
Jilin Medical University
2017
Nanjing University of Science and Technology
2011-2013
In order to study the effects of strain (ɛ) and rate (ε˙) on dynamic recrystallization (DRX) solid-state welding behaviors aluminum alloys, hot compression experiments with different strains rates 6063 alloys were conducted in this paper. The microstructures zones near interfaces observed characterized. results show that continuous (CDRX) is not only DRX mode during deformation process alloys. interfacial bonding are influenced by rate. dominant CDRX at a 0.1 s−1, while discontinuous (DDRX)...
Given the significant impact of initial surface layer materials on their tribological performance, this study uses a wire–plate reciprocating friction pair to investigate effects mechanical rolling process elastic current-carrying performance. The plate specimens were subjected processing with varying feed rates under different load conditions, using self-designed and wear testing machine. results show that as rate increase, contact resistance varies within range 0.0065 Ω 0.0310 Ω, standard...
The effect of spatial confinement on femtosecond laser-induced Cu plasmas was investigated by time-resolved spectroscopy. cylindrical cavities with various diameters (2 and 3 mm) heights (2, 3, 4 were placed the sample surface. An obvious enhancement in emission intensity atomic lines observed when a cavity used to confine plasmas. results showed that ratios breakdown spectroscopy varied selected. not significantly influenced height because plasma plume is lower than height. maximum ratio...
The alternation of creep properties is unavoidable in welded structures after suffering from cyclic damage, which may lead to the premature failure power plant units and hard predict. This work devoted clarify influence prior low cycle fatigue (LCF) loading on subsequent fracture behaviour P92 steel joint. Prior LCF tests ranging 0%Nf 70%Nf were performed at 650 °C. Results indicate that remaining life joint significantly reduced by loading, whereas ductility has a pronounced increase....
In the present study, ageing precipitation behaviors of Fe-CuNiAlMn steels at different temperatures for 4 h were investigated. The size, number density, crystal structure and composition co-precipitates characterized by atom probe tomography (APT) transmission electron microscopy (TEM). results showed that with increase temperature, hardness steel first increased then decreased, peak was obtained 500 °C h, which due to high-density small-size a core-shell structure. Moreover, increasing...
The aim of this paper is to propose a modified multiaxial high-cycle fatigue criterion based on the critical plane approach. proposed contains three parameters, that is, shear stress amplitude, normal amplitude and mean stress. In order take into account effects, determined by maximum criterion, influence damage also considered. Based life predicted, results showed good agreement with experimental data obtained from some literatures.
This paper carries out the spatial confinement effect on laser-induced Cu breakdown spectroscopy in a cylindrical cavity via nanosecond pulsed Q-switch Nd:YAG laser operating at wavelength of 1064 nm. The temporal evolution plasma is used to investigate characteristics spectral persistence. atomic persistence generated from with experimentally demonstrated, where results indicate that diameter plays very important role an excited neutral emission line, while depth almost independent (I) line...
This study was conducted to investigate spatial confinement effects in laser-induced Cu plasma <italic>via</italic> optical emission spectroscopy.
Abstract The key components in service, such as aero‐engine turbine blades, are generally bearing complex interactions of high and low cycle fatigue loading. It is essential to make accurate life predictions for these components. In this paper, based on experimental analysis the Miner's rule, a combined prediction model proposed. effect loading interaction considered through coupled damage, which proposed investigation test results does not require additional material constants except S‐N...
Through analyzing the characteristics of Miner’s rule and Manson-Halford (M-H) model, a nonlinear fatigue damage accumulation model is established based on curve method under combined high low cycle loading. In this an interaction factor related to maximum stress range proposed consider loading effect. Furthermore, does not require any additional material parameters except for S-N parameters. The experimental data five materials, including TC11 alloy, 2024-T3 aluminum 45 steel, LY12-CZ...
Currently, China’s aging population, high savings rate and housing asset prices coexist, which has become a hot issue in academic research. First, considering the life-cycle hypothesis overlapping generations model, are negatively correlated with population dependency ratio positively household savings. Second, based on census data from prefecture-level cities, pooled regression model two-stage least squares (2SLS) used this empirical The child was found to have significant negative impact...