A5041260268- Ultrasonics and Acoustic Wave Propagation
- Structural Health Monitoring Techniques
- Thermography and Photoacoustic Techniques
- Non-Destructive Testing Techniques
- Geophysical Methods and Applications
- Advanced Battery Materials and Technologies
- Advanced Measurement and Detection Methods
- Advanced Battery Technologies Research
- Advancements in Battery Materials
- Mechanical and Thermal Properties Analysis
- Power Line Inspection Robots
- Bone Tissue Engineering Materials
- Optical measurement and interference techniques
- Icing and De-icing Technologies
- Advanced Sensor Technologies Research
- 3D Printing in Biomedical Research
- Additive Manufacturing and 3D Printing Technologies
- Energetic Materials and Combustion
- Advanced Fiber Optic Sensors
Virginia Tech
2023-2024
Granta Design (United Kingdom)
2021-2022
The Welding Institute
2022
Cardiff University
2016-2020
Pennsylvania State University
2018
There are many advantages to adhesively bonding stiffeners onto aircraft structures rather than using traditional mechanical fastening methods. However there is a lack of confidence the structural integrity bonded joints over time. Acousto-ultrasonic Lamb waves have shown great potential in health monitoring applications both metallic and composite structures. This paper presents an experimental investigation use acousto-ultrasonic for 3D scanning laser vibrometry. Two stiffened panels were...
One of the most significant benefits Acoustic Emission (AE) testing over other Non-Destructive Evaluation (NDE) techniques lies in its damage location capability a wide area. The delta-T mapping technique developed by researchers has been shown to enable AE source high level accuracy complex structures. However, time-consuming and laborious data training process prevented this from large-scale application on large In order solve problem, Finite Element (FE) method was applied model for...
As worldwide wind energy generation capacity grows, there is an increasing demand to ensure structural integrity of the turbine blades maintain efficient and safe generation. Currently, traditional non-destructive testing methods visual inspections are employed which require be out-of-operation during inspection periods, resulting in costly lengthy downtime. This study experimentally investigates potential for using Lamb waves monitor a composite blade that has been subject impact...
A group of five electrically controlled monopropellants were developed, and their fundamental rheological, electrochemical, thermal, combustion properties characterized. baseline monopropellant was composed lithium perchlorate complexed with polyethylene glycol to form an ionically conductive gel polymer electrolyte. Subsequent candidates supplemented varying amounts ammonium at a fixed polymer-to-oxidizer ratio determine the effects shifting oxidizer content on properties. The ignition...
An experimental investigation was conducted to characterize electrically controllable gel monopropellants in the form of polymer electrolytes. The gels utilize lithium perchlorate and ammonium oxidizer salts complexed with an ionically conductive polymer. applied electric potential causes solid ions flow through gel, leading decomposition ignition propellant. delay propellant respect time first contact between powered electrodes is collected via high-speed camera for several increasing...
Shearography, as a novel non-destructive evaluation technique, has shown notable ability in the detection of composite materials. However, current shearography practices, phase shifting and loading methods applied are mainly static. For instance, vacuum hood or force facilities often used phase-shifting shearography, these hard to realise with robotic control, especially for on-board inspection. In this study, dynamic process detecting defects subsurface wind turbine blade (WTB) using...
Aircraft structural damage detection is becoming of increased importance. Technologies such as acousto-ultrasonic have been suggested for this application; however, an optimization strategy sensor network design required to ensure a high probability while minimizing mass. A methodology optimizing transducer placement adhesive disbond on metallic aerospace structures presented. Experimental data sets were acquired using three-dimensional scanning laser vibrometry enabling in-plane and...
Concrete structures are being subjected to increasing loads and used beyond their intended lifespan. When combined with operators shrinking maintenance budgets it is imperative monitored for damage. Acoustic Emission (AE) AE Tomography offer a method damage detection characterisation. However, they encumbered by equipment setup requirements, best on areas where already known have occurred. An autonomous pulse catch system could be identify these areas. To explore the potential of such...
Hard ballistic body armour plates are designed to withstand the impact of a bullet and protect wearer, if this happens is clearly damaged so retired from service. Mishandling, however, such as dropping armour, may cause minor difficult detect damage which compromises effectiveness plate. Current methods inspection involve shipping central location, performing thorough returning them service uncompromised; costly requires redundancy equipment for when not in Acousto-Ultrasonics method...
The detection capability of magnetic eddy current and flux leakage sensors depends on the magnetization level in test specimen. While low field intensity makes it difficult to detect defects, higher levels increase background noise as well size weight sensors. Moreover, powerful magnets are used circuit that is handle pose potential health safety hazards. Finite element modelling widely for optimization design yokes. Modelling softwares limited their ability conduct artificial...
Monitoring wind turbine blades for damage onset and progression detection in efficient effective ways can be one of the most challenging tasks site managers, technicians, fleet engineers. Blades are susceptible to from a variety causes sources, ranging environmental factors such as lightning normal wear-andtear leading worsening edge erosion, crack propagation internal delaminations. With these defects often out sight, particularly with inspections only being conducted once year or less,...