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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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Kononenko, Denys |
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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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Muller, Hermance |
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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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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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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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Chen, S.
Engineering and Physical Sciences Research Council
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2022Direct-write piezoelectric coating transducers in combination with discrete ceramic transducer and laser pulse excitation for ultrasonic impact damage detection on composite platescitations
- 2022Impact of Zr top electrode on tantalum oxide-based electrochemical metallization resistive switching memory: towards synaptic functionalitiescitations
- 2021Computational techniques for characterisation of electrically conductive MOFs : quantum calculations and machine learning approaches
- 2020Functional nanocomposites for energy storage:chemistry and new horizonscitations
- 2019Preparation of nickel (oxide) nanoparticles confined in the secondary pore network of mesoporous scaffolds using melt infiltrationcitations
- 2018Direct-write piezoelectric ultrasonic transducers for impact damage detection in composite plates
- 2018Study of self-shielding in dpa calculations
- 2017Silver Nanowire Particle Reactivity with Human Monocyte-Derived Macrophage Cells: Intracellular Availability of Silver Governs Their Cytotoxicitycitations
- 2017Phosphate content affects structure and bioactivity of sol-gel silicate bioactive glassescitations
- 2017Mechanical Properties of a Bainitic Steel Producible by Hot Rollingcitations
- 2016Exploring the Limiting Open-Circuit Voltage and the Voltage Loss Mechanism in Planar CH<inf>3</inf>NH<inf>3</inf>PbBr<inf>3</inf> Perovskite Solar Cellscitations
- 2016Overcoming the Interface Losses in Planar Heterojunction Perovskite-Based Solar Cellscitations
- 2016Photoinduced degradation of methylammonium lead triiodide perovskite semiconductorscitations
- 2016Extending the environmental lifetime of unpackaged perovskite solar cells through interfacial designcitations
- 2015Inverted, Environmentally Stable Perovskite Solar Cell with a Novel Low-Cost and Water-Free PEDOT Hole-Extraction Layercitations
- 2013Influence of ferrite grain orientation on the formation of selective oxidation particles
- 2012Estimation of the complex shear modulus in tissue-mimicking materials from optical vibrometry measurementscitations
- 2011Thermodynamical properties of glass forming systems: A Nuclear Magnetic Resonance analysiscitations
- 2004Liquidus temperatures of ferro-nickel smelting slags
Places of action
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article
Direct-write piezoelectric coating transducers in combination with discrete ceramic transducer and laser pulse excitation for ultrasonic impact damage detection on composite plates
Abstract
<jats:p> In this work, direct-write piezoelectric transducers (DWTs) were made by spraying piezoelectric poly(vinylidene fluoride-co-trifluoroethylene) coating with comb-shaped electrodes on carbon fibre reinforced polymer (CFRP) plates for drop weight impact damage detection. Their ability and performance were investigated and compared to discrete piezoelectric lead zirconate titanate (PZT) ceramic transducers that were adhesively bonded on the same CFRP plate. Guided wave signals were acquired with different combinations of actuator-sensor involving DWT, PZT and laser ultrasonic excitation, in pitch-catch configuration. DWTs allowed consistency and simplified signal interpretation due to an effective mode selection (A<jats:sub>0</jats:sub> or S<jats:sub>0</jats:sub> mode) with wavelengths of 10 and 12 mm. PZTs generated stronger but much more complex signals and mode selection with a larger wavelength (20 mm). The configuration with PZT as actuator and DWT as receiver showed the highest signal amplitude changes of A<jats:sub>0</jats:sub> or S<jats:sub>0</jats:sub> mode, allowing efficient detection of damage introduced by a 31 J impact. Further ultrasonic B- and C-scans revealed a 27 mm long crack on the plate’s backside developed in addition to internal cracks and delaminations of about 34 mm in length. For realizing contactless ultrasound excitation, a neodymium-doped yttrium aluminium garnet laser (wavelength of 1064 nm, 5.4 ns pulses) was used to replace the surface-mounted brittle PZT. The combination of the broadband laser excitation with the DWTs as sensors achieved more reliable damage detection than equivalent PZTs, attributed to DWT’s effective single mode selection. In addition to reduced weight, the polymeric coated DWTs allow large area implementation (scaling up), even on curved surfaces due to their flexibility and conformability, in contrast to adhesively bonded discrete transducers. </jats:p>