693.932 PEOPLE
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gachagan, Anthony
University of Strathclyde
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (76/76 displayed)
- 2023Flexible and automated robotic multi-pass arc welding
- 2023Driving towards flexible and automated robotic multi-pass arc welding
- 2022Autonomous and targeted eddy current inspection from UT feature guided wave screening of resistance seam welds
- 2022Mechanical stress measurement using phased array ultrasonic system
- 2022Investigating ultrasound wave propagation through the coupling medium and non-flat surface of wire + arc additive manufactured components inspected by a PAUT roller-probe
- 2022Automated multi-modal in-process non-destructive evaluation of wire + arc additive manufacturing
- 2022Targeted eddy current inspection based on ultrasonic feature guided wave screening of resistance seam welds
- 2022Automated real time eddy current array inspection of nuclear assetscitations
- 2021Feed forward control of welding process parameters through on-line ultrasonic thickness measurementcitations
- 2021Inspection of components with obscured accessibility
- 2021A cost-function driven adaptive welding framework for multi-pass robotic weldingcitations
- 2021Non-contact in-process ultrasonic screening of thin fusion welded jointscitations
- 2020In-process calibration of a non-destructive testing system used for in-process inspection of multi-pass weldingcitations
- 2020Design of 2D sparse array transducers for anomaly detection in medical phantomscitations
- 2020Effective Grain Orientation Mapping of Complex and Locally Anisotropic Media for Improved Imaging in Ultrasonic Non-Destructive Testingcitations
- 2020Laser-assisted surface adaptive ultrasound (SAUL) inspection of samples with complex surface profiles using a phased array roller-probe
- 2019Ultrasonic phased array inspection of wire + arc additive manufacture samples using conventional and total focusing method imaging approachescitations
- 2019Electromagnetic acoustic transducers for guided-wave based robotic inspection
- 2019Ultrasonic phased array inspection of wire plus arc additive manufacture samples using conventional and total focusing method imaging approachescitations
- 2019Ultrasonic phased array inspection of a Wire + Arc Additive Manufactured (WAAM) sample with intentionally embedded defectscitations
- 2019Towards guided wave robotic NDT inspection
- 2018Linear ultrasonic array design using cantor set fractal geometrycitations
- 2018Broadband 1-3 piezoelectric composite transducer design using Sierpinski Gasket fractal geometrycitations
- 2018Broadband piezocrystal transducer array for non-destructive evaluation imaging applicationscitations
- 2018Ultrasonic phased array inspection of wire plus arc additive manufacture (WAAM) samples using conventional and total focusing method (TFM) imaging approaches
- 2017A nonlinear elasticity approach to modelling the collapse of a shelled microbubblecitations
- 2017Assessment of corrosion under insulation and engineered temporary wraps using pulsed eddy-current techniques
- 2017Linear ultrasonic array incorporating a Cantor Set fractal element configuration
- 2017An expert-systems approach to automatically determining flaw depth within candu pressure tubes
- 2016Improving the operational bandwidth of a 1-3 piezoelectric composite transducer using Sierpinski Gasket fractal geometry
- 2015Dynamical model of an oscillating shelled microbubble
- 2015System modeling and device development for passive acoustic monitoring of a particulate-liquid processcitations
- 2015Accurate finite element model of equiaxed-grain engineering material for ultrasonic inspection
- 2015A model-based approach to crack sizing with ultrasonic arrayscitations
- 2014Automatic ultrasonic robotic arraycitations
- 2014Inspection design using 2D phased array, TFM and cueMAP software
- 2014Application of conformal map theory for design of 2-D ultrasonic array structure for ndt imaging applicationcitations
- 2013Robust frequency diversity based algorithm for clutter noise reduction of ultrasonic signals using multiple sub-spectrum phase coherencecitations
- 20132D ultrasonic array transducer design to maximise coverage in composite material structures
- 2013A design methodology for 2D sparse NDE arrays using an efficient implementation of refracted - ray TFMcitations
- 2012High intensity focused ultrasound array transducers using 2-2 stacked piezoelectric composite appropriate for sonochemisrty applicationcitations
- 2012Robust defect detection in ultrasonic nondestructive evaluation (NDE) of difficult materialscitations
- 2012Ultrasonic imaging of electrofusion welded polythene pipes employed in utilities industry
- 2010An annular array with fiber composite microstructure for far field NDT imaging applicationscitations
- 2010A comparison of methods used to predict the vibrational energy required for a reliable thermosonic inspection
- 2010Hexagonal array structure for 2D NDE applicationscitations
- 2010Monitoring crack propagation in turbine blades caused by thermosonic inspection
- 2010A wideband annular piezoelectric composite transducer configuration with a graded active layer profilecitations
- 2009Numerical optimisation of piezocomposite material properties using 3D finite - element modeling
- 2009Theoretical analysis of ultrasonic vibration spectra from multiple particle-plate impactscitations
- 2009Research applications and opportunities in power ultrasonicscitations
- 2009Estimating particle concentration using passive ultrasonic measurement of impact vibrationscitations
- 2009Development of an efficient conformable array structure
- 2009Flexible ultrasonic transducers incorporating piezoelectric fibrescitations
- 2008Particle sizing using passive ultrasonic measurement of particle-wall impact vibrationscitations
- 2007Simulation of the influence of hydrophones used for the characterization of pressure field distribution in low frequency, high power ultrasonic reactor vesselscitations
- 2007Exploring the advantages of a random 1-3 connectivity piezocomposites structure incorporating piezoelectric fibres as the active elementcitations
- 2007Investigating the influence of the constituent materials on the performance of periodic piezoelectric composite arrayscitations
- 2007A wideband ultrasonic test system for characterisation of particulate systems in the linear and non-linear regimescitations
- 2007Enhanced flexibility and performance from piezocomposite 2D array with a dual-polymer phase improved structurecitations
- 2006Comparison of the performance of pmn-pt single-crystal and ceramic composite arrays for NDE applicationscitations
- 2006Comparison of the frequency and physical nature of the lowest order parasitic mode in single crystal and ceramic 2-2 and 1-3 piezoelectric composite transducerscitations
- 2005A flexible piezoelectric transducer design for efficient generation and reception of ultrasonic lamb wavescitations
- 2005Monitoring of a heterogeneous reaction by acoustic emission
- 2004Minimisation of mechanical cross talk in periodic piezoelectric composite arrayscitations
- 2004A new low frequency piezoelectric composite transducercitations
- 2004A high power ultrasonic array based test cellcitations
- 2004An analysis of ultrasonic wave propagation in metallic pipe structures using finite element modelling techniques
- 2003Embedded ultrasonic transducer design and wireless communication for intelligent monitoring of structures
- 2003Comparison of mechanical cross talk in single crystal and ceramic periodic piezoelectric composite arrayscitations
- 2003Impact on the mechanical integrity of carbon fibre reinforced composite plates incorporating embedded piezoceramic transducers
- 2002Lamb wave suppression in periodic 1-3 piezoelectric composite transducerscitations
- 2002Development of a manual air-coupled ultrasonic inspection instrument for use on aeronautical structures under in-service conditions
- 2001The structural integrity of composite plates with embedded piezoelectric transducers for smart structural monitoring
- 2000Embedded ultrasonic sensors for monitoring structural integrity
- 2000Comparison of different piezoelectric materials for the design of embedded transducers for structural health monitoring applicationscitations
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article
Minimisation of mechanical cross talk in periodic piezoelectric composite arrays
Abstract
This paper describes an investigation into mechanical cross-talk within 1-3 and 2-2 connectivity piezoelectric composite array configurations, comprising a matrix of active piezoelectric elements embedded within a passive, polymeric, material. One way to take full advantage of the reported sensitivity and bandwidth improvements from single-crystal materials is to configure them as a piezoelectric composite. For this work, piezoelectric ceramic, lithium niobate and single-crystal pmn-pt materials are investigated as the active component in the piezocomposite array designs. Within these piezoelectric configurations, the generation of ultrasonic inter-pillar modes, which arise due to the periodicity of the active piezoelectric elements within the piezocomposite lattice, can be detrimental to the array performance. Consequently, finite element (FE) modelling, using PZFlex, is utilised to provide design techniques for the removal of these inter-pillar modes from the frequency band of interest and the realisation of unimodal piezocomposite transducer structures. Further FE modelling is used to generate dispersion data for 2-2, and doubly periodic 1-3, composite substrates. This dispersion data is used to design the linear arrays, with the objective of minimising mechanical inter-element cross-talk. A comparison between the FE predicted mechanical cross-coupling between array elements, for each composite material operating in air, is supported by experimentally measured data. Subsequently, the validated FE models are extended to include both operation into a solid load and the introduction of a backing material to simulate the operation of a practical NDE array transducer. The design techniques obtained from PZFlex are shown to produce arrays with low cross-talk and the extent of the cross-talk in manufactured and modelled ceramic and pmn-pt single-crystal arrays is compared.