A5017834536- High-Velocity Impact and Material Behavior
- Ultrasonics and Acoustic Wave Propagation
- Geophysical Methods and Applications
- Non-Destructive Testing Techniques
- Electromagnetic Launch and Propulsion Technology
- Structural Response to Dynamic Loads
- Planetary Science and Exploration
- Cellular and Composite Structures
- Acoustic Wave Resonator Technologies
- Astro and Planetary Science
- Energetic Materials and Combustion
- Advanced MEMS and NEMS Technologies
- Railway Engineering and Dynamics
- Advanced Sensor and Energy Harvesting Materials
- Engineering and Material Science Research
- Space Satellite Systems and Control
- Ultrasound Imaging and Elastography
- Concrete Corrosion and Durability
- Fatigue and fracture mechanics
- Ferroelectric and Piezoelectric Materials
- Optical and Acousto-Optic Technologies
- Thermography and Photoacoustic Techniques
- Photoacoustic and Ultrasonic Imaging
- Dielectric materials and actuators
- Microstructure and mechanical properties
Harbin Institute of Technology
2014-2024
Hong Kong Polytechnic University
2019-2021
Shanghai Institutes for Biological Sciences
2016
Shanghai Jiao Tong University
2016
Chinese Academy of Sciences
2016
Harbin University
2014
Pennsylvania State University
2002
A high-ε polymer based composite with lower inorganic content (≤10 vol%) has been fabricated using BaTiO<sub>3</sub> nanowires as fillers.
The interface defeat and dwell can effectively improve the ballistic performance of ceramic armors under high velocity impact long rod projectiles. Confinement conditions along both axial radial directions affect these behaviors. With aim giving an insight into effect cover plate thickness connection mode plates with confining tubes on behaviors, numerical simulations were performed in which confined silicon carbide (SiC) targets impacted by tungsten rods. pressure surfaces SiC fixed are...
Bonded structures are frequently adopted in structural connections and highly prone to degradation or decrease of interfacial strength due adhesive aging, poor quality surface preparation, as well the exposure harsh environment external loading. This study addresses establishment a framework which modally selective ultrasonic guided wave is used for disbond identification sizing. In this framework, propagating evanescent modes waves first obtained, followed by excitability analysis each...
Mesenchymal stromal cells (MSCs) are strongly immunosuppressive via producing nitric oxide (NO) and known to migrate into tumor sites promote growth, but the underlying mechanisms remain largely elusive. Here, we found that interferon alpha (IFNα)-secreting MSCs showed more dramatic inhibition effect on progression than of IFNα alone. Interestingly, IFNα-primed could also effectively suppress growth. Mechanistically, demonstrated both IFNβ (type I IFNs) reversed splenocyte proliferation....
The Split Hopkinson pressure bar (SHPB) is widely used for characterizing the mechanical behavior of materials at high strain rates. One most challenging factors achieving constant rate (CSR) loading specimen a certain rate. Obtaining effective incident pulse based on experimental material CSR remains unresolved. This research focuses obtaining proper using pulse-shaping technique. A parameterized objective model in terms and quasi-static (or dynamic stress–strain) established utilizing...
A new breed of nanocomposite-based spray-on sensor is developed for in-situ active structural health monitoring (SHM). The novel nanocomposite rigorously designed with graphene as the nanofiller and polyvinylpyrrolidone (PVP) matrix, fabricated using a simple spray deposition process. Electrical analysis, well morphological characterization sensor, was conducted to investigate percolation characteristic, in which optimal threshold (~0.91%) graphene/PVP determined. Owing uniform stable...
Pervasive but insidious, pitting damage—from corrosion in maritime structures through electrical bearings to debris cloud–induced craters spacecraft—is a typical modality of material degradation and lesion engineering assets harsh service environment. Pitting damage may feature hundreds clustered, localized craters, cracks, diverse microscopic defects (e.g. dislocation, micro-voids, cracks) disorderedly scattered over wide area. Targeting accurate, holistic evaluation (mainly the existence,...
As an essential tool for realistic description of the current or future debris environment, Space Debris Environment Engineering Model (SDEEM) has been developed to provide support risk assessment spacecraft. In contrast with SDEEM2015, SDEEM2019, latest version, extends orbital range from Low Earth Orbit (LEO) Geosynchronous (GEO) years 1958-2050. this paper, improved modeling algorithms used by SDEEM2019 in propagating simulation, spatial density distribution, and spacecraft flux...
Acoustic impedance (Z) and fabrication issues for matching layers in high frequency transducers were identified. Guided by a density/impedance relationship established various polymers, glasses, ceramics metals, few monolithic materials with Z the range of 6-9 MRayls found. Composites gold- silver-polymer resulted desired impedances, however, increased attenuation. Issues microstructural scale, homogeneity particle size effects noted including percolation behaviour conducting composites....
Despite proven effectiveness and accuracy in laboratories, the existing damage assessment based on guided ultrasonic waves (GUWs) or acoustic emission (AE) confronts challenges when extended to real-world structural health monitoring (SHM) for railway tracks. Central concerns are extremely complex signal appearance due highly dispersive multimodal wave features, restriction transducer installations, severe contaminations of ambient noise. It remains a critical yet unsolved problem along with...
A 0-3 alumina-HYSOL epoxy composite was made with the volume fraction of alumina varied from 0 to 40% and physical properties were measured. These used as input values for matching layer in a finite element model 5 MHz PZT-5H transducer. The thickness corresponding transmitted power into water calculated compared that quarter wave length matching. optimum this found be 11% less than /spl lambda//4.