A5071211421- Ultrasonics and Acoustic Wave Propagation
- Structural Health Monitoring Techniques
- Non-Destructive Testing Techniques
- Thermography and Photoacoustic Techniques
- Smart Materials for Construction
- Geophysical Methods and Applications
- Advanced Fiber Optic Sensors
- Advanced Sensor and Energy Harvesting Materials
- Acoustic Wave Resonator Technologies
- Fatigue and fracture mechanics
- Advanced Sensor Technologies Research
- Ferroelectric and Piezoelectric Materials
- Microwave Dielectric Ceramics Synthesis
- Indoor and Outdoor Localization Technologies
- Acoustic Wave Phenomena Research
- Multiferroics and related materials
- Advanced MEMS and NEMS Technologies
- Energy Efficient Wireless Sensor Networks
- Advanced Sensor and Control Systems
- Speech and Audio Processing
- Flow Measurement and Analysis
- Gas Sensing Nanomaterials and Sensors
- Innovations in Concrete and Construction Materials
- Aeroelasticity and Vibration Control
- Multi-Agent Systems and Negotiation
Nanjing University of Aeronautics and Astronautics
2015-2024
Nantong University
2024
Affiliated Hospital of Nantong University
2024
Second Affiliated Hospital of Nantong University
2024
China Earthquake Administration
2023
Institute of Disaster Prevention
2023
PLA Army Engineering University
2019-2023
Wuhan University of Technology
2017-2022
PLA Navy General Hospital
2022
North China University of Water Resources and Electric Power
2022
The growing use of composite structures in aerospace has attracted much interest structural health monitoring (SHM) for the localization impact positions due to their poor resistance properties. propagation mechanism and frequency dispersion features signals on complex are more complicated than those simple plates. In this paper, a time reversal focusing based imaging method is proposed. A Shannon wavelet transform adopted extract narrow-band response PZT sensors array at special...
Composite structures may be subjected to internal damages caused by impact events, which can seriously degrade the property of structures. Hence, monitoring is great importance ensure applications composite, especially in aerospace engineering. This paper puts forward, for first time, a new multi-response-based wireless sensor network (WSN) realize large-scale with weight and complexity system reduced greatly. A novel global localization method that unite multiple leaf nodes solve problems...
Modern structures on aircraft make increasing use of large-scale composite structures. Quantitative damage monitoring for composites, including occurrence, number, localization, and size estimation, will help reduce maintenance costs, improve fleet management efficiency through condition-based maintenance, potentially more rapidly enable new material systems structural concepts by integrating health into the design itself. With advantage easily interpretable, intuitive, accurate imaging...
Harmonious developments of electrical and mechanical performances are crucial for stretchable sensors in structural health monitoring (SHM) flexible aircraft such as aerostats morphing aircrafts. In this study, we prepared a highly durable ternary conductive nanocomposite made polydimethylsiloxane (PDMS), carbon black (CB) multi-walled nanotubes (MWCNTs) to fabricate strain sensors. The has excellent properties by intensively optimizing the weight percentage conducting fillers well ratio...
Structural health monitoring technology for aerospace structures has gradually turned from fundamental research to practical implementations. However, real work under time-varying conditions that introduce uncertainties signal features are extracted sensor signals, giving rise difficulty in reliably evaluating the damage. This paper proposes an online updating Gaussian Mixture Model (GMM)-based damage evaluation method improve reliability conditions. In this method, Lambwave-signal variation...
Aircraft smart skin technology requires the integration of large-scale, lightweight, and integrative sensor networks with aircraft structural skin, but it is difficult to directly manufacture such in a low-cost, reliable, simple way. To study this issue, design manufacturing method stretchable large-scale guided wave network proposed article. The key principle limited scale expand for health monitoring. ensure excellent stretchability network, serpentine-based fractal island-interconnect...
Face masks are key personal protective equipment for reducing exposure to viruses and other environmental hazards such as air pollution. Integrating flexible wearable sensors into face can provide valuable insights public health. The advantages that a breath-monitoring mask requires, including multi-functional sensing ability continuous, long-term dynamic breathing process monitoring, have been underdeveloped date. Here, we design an effective human breath monitoring based on La0.7Sr0.3MnO3...
Through the integration of advanced sensors, actuators, and micro-processors, aircraft smart skin technology can improve structural performance make them self-perception, self-diagnosis, self-adaptation, self-learning, self-repair. Aircraft for health monitoring (SHM) is an important type has received extensive attention in recent years. Large-scale, lightweight, low-power consumption are three key problems hindering realization engineering applications SHM. In view these restrictions...
Due to the growing use of composite materials in aircraft structures, Aircraft Smart Composite Skins (ASCSs) which have capability impact monitoring for large-scale structures need be developed. However, an structure is a random transient event that needs monitored on-line continuously. Therefore, sensor network ASCS and corresponding system installed on as on-board device must meet requirements light weight, low power consumption high reliability. To achieve this point, Impact Region...
Fatigue crack growth prognosis is important for prolonging service time, improving safety, and reducing maintenance cost in many safety-critical systems, such as aircraft, wind turbines, bridges, nuclear plants. Combining fatigue models with the particle filter (PF) method has proved promising to deal uncertainties during reach a more accurate prognosis. However, research on methods integrating on-line monitoring PF still lacking, well experimental verifications. Besides, adopted so far are...
For aerospace application of structural health monitoring (SHM) technology, the problem reliable damage under time-varying conditions must be addressed and SHM technology has to fully validated on real aircraft structures realistic load ground before it can reach status flight test. In this paper, guided wave (GW) based method is applied a full-scale fatigue test which one most similar To deal with problem, GW-Gaussian mixture model (GW-GMM) proposed. The probability characteristic GW...
With the increase in aging aircrafts, corrosion monitoring has attracted much attention structural health area. Multiple signal classification been gradually applied to area as a new promising method because of its ability directional scanning and potential monitor multiple sources. However, applying algorithm real damage still faces some challenges. First, scattered Lamb waves obtained using single actuator is relatively weak, making signal-to-noise ratio signals low resulting precision...
Piezoelectric transducer (PZT) and Lamb wave based structural health monitoring (SHM) method have been widely studied for on-line SHM of high-performance structures. To monitor large-scale structures, a dense PZTs array is required. In order to improve the placement efficiency reduce wire burden array, concept piezoelectric transducers layer (PSL) was proposed. The PSL consists PZTs, flexible interlayer with printed wires signal input/output interface. For on real aircraft there are two main...
The susceptibility of composite materials to internal damage caused by low-velocity impact is well known and creates a major concern related structural health monitoring. This research presents near-field monitoring method based on the two-dimensional multiple signal classification for structure. Since elastic waves attenuate quickly in complex aircraft structures impacts may happen near sensors, important. However, most methods reported are far-field assumption. When occur not far enough...