A5100325528- Algebraic and Geometric Analysis
- Differential Equations and Boundary Problems
- Concrete and Cement Materials Research
- Structural Health Monitoring Techniques
- advanced mathematical theories
- Ultrasonics and Acoustic Wave Propagation
- Concrete Properties and Behavior
- Rock Mechanics and Modeling
- Numerical methods in inverse problems
- Innovative concrete reinforcement materials
- Fire effects on concrete materials
- Geotechnical Engineering and Underground Structures
- Advanced Mathematical Modeling in Engineering
- TiO2 Photocatalysis and Solar Cells
- Thermography and Photoacoustic Techniques
- Dam Engineering and Safety
- Advanced Photocatalysis Techniques
- Material Properties and Processing
- Optical Systems and Laser Technology
- Optical measurement and interference techniques
- Seismic Waves and Analysis
- Wood Treatment and Properties
- Image Processing and 3D Reconstruction
- Recycled Aggregate Concrete Performance
- Cultural Heritage Materials Analysis
Xiamen University
2023-2025
Shenyang Ligong University
2024
Chinese Academy of International Trade and Economic Cooperation
2023
China University of Mining and Technology
2020-2022
Southwest Forestry University
2021
North China University of Water Resources and Electric Power
2020-2021
Ludong University
2019
Chongqing University of Arts and Sciences
2004-2011
IHI Corporation (United States)
2011
Tsinghua University
2009
Impact localization can provide accurate location information for rapid scanning and diagnosis of structural damage sufficiently improve the efficiency maintenance. The reference database method is commonly used to locate impact events, key which how match incoming events with correctly by reliable features valid metrics. However, complex reinforced ribbed structures in aerospace, stress wave generated strongly coupled structure, directly affects interferes feature construction similarity...
An impact monitoring method based on time series analysis and a sparse sensor network is proposed to identify the location of event that occurs aircraft complex structures estimate energy. Generally, high-density required for high localization accuracy event, but with trade-off deployment costs. A piezoelectric together coarse fine two-step designed balance cost. The stress wave signals caused by are measured regarded as series. problem converted into classification series, strategy...
Abstract Cement Sand and Gravel (CSG) is a low-cost, environment-friendly composite material mixed of unscreened aggregate, cement, fly ash water, its properties differ from ordinary concrete due to different aggregate characteristics. In order investigate the effect characteristics on mechanical behavior CSG, this paper used numerical simulation method divide CSG into unit, cement mortar unit interface at mesoscopic level randomly generate then laboratory uniaxial compression test results...
Through the time-frequency analysis of propagation waveform acoustic emission (AE) signal propagating in thin sheet Pinus sylvestris var.mongolica, characteristics stress wave when as a lamb was studied.An AE source generated on surface specimen, discrete wavelet transform method used to achieve de-noising and reconstruct signal.On this basis, time difference positioning calculate velocity waves, compared with waves metal specimen.The results show that high-frequency mode attenuated sharply...
Preparation of a series novel hybrid composite materials m-aramid/chitosan to extract Hg(II) ions from water was carried out by using various weight ratios m-aramid chitosan (100/0, 85/15, 65/35, 50/50, and 35/65, respectively).Their structures were characterized Fourier-transform infrared spectroscopy (FTIR) scanning electron microscope.The result FTIR indicated that the peak intensity increases with increasing content in films.The adsorption properties affected many factors including pH...
Abstract Cemented sand gravel (CSG) is different from ordinary concrete in its mechanical properties such as elastic modulus due to the non-sieving of aggregate. On basis previous studies, serial model, parallel Hashin-Shtrikman model and prediction method based on mesoscopic random aggregate simulation have been analyzed, influences component parameters calculation above four methods studied. The results show that tensile strength meso great influence simulation, cement mortar has largest...
Abstract The internal curing technology has been widely applied to high-strength concrete, for it can make the concrete marked by low shrinkage and durable frost resistance. key its extension application lies in reasonable mixing amount of materials. To address this problem, scholars have proposed a method determining water demand curing; however, release materials is difficult obtain measurement due method. Therefore, paper calculation model based on modified MULTIMOORA (Multi-Objective...
An iteration method for computing the nonuniform potential and current distributions at a partially passivated disk electrode is introduced. The computation developed small cathode in vicinity of much larger anode, situation encountered some polarized electrochemical systems, e.g., anodic protection. It uses finite element allied with trial error technique as well successive boundary condition variation technique. was used study steel immersed 0.5 N HAc + 0.05 NaAc solution. computed...
Abstract The thermal expansion deformation of concrete is significantly influenced by high temperature and moisture content. Before being heated at elevated temperatures 100°C, 200°C, 300°C, the initial content specimens was maintained 0%, 3.22%, 6.55%, respectively. in furnace constant until center also reached target temperatures. effects heating on compressive strength, mass loss, rate linear (RLE), coefficient (CTE) were analyzed. difference before after compared. results showed that...
In order to explore the influence of wood’s anisotropic characteristics on Acoustic Emission (AE) signals’ propagation, law AE propagation velocity along different directions was studied. First, The center specimen’s surface took as source,then 24 were chose one by every 15º around center,and 2 sensors arranged in each direction collect original signals. Second, wavelet analysis used denoise signals, then signals reconstructedby Empirical Mode Decomposition (EMD). Finally, time difference...