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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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Worden, K.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (33/33 displayed)
- 2020Machine learning at the interface of structural health monitoring and non-destructive evaluationcitations
- 2020Machine learning at the interface of structural health monitoring and non-destructive evaluationcitations
- 2019On the performance of a cointegration-based approach for novelty detection in realistic fatigue crack growth scenarioscitations
- 2018Acoustic emission source characterisation using evolutionary optimisation
- 2016Novelty detection and dimension reduction via guided ultrasonic waves:Damage monitoring of scarf repairs in composite laminatescitations
- 2016Novelty detection and dimension reduction via guided ultrasonic waves: Damage monitoring of scarf repairs in composite laminatescitations
- 2015Continuous debonding monitoring of a patch repaired helicopter stabilizer:Damage assessment and analysiscitations
- 2015Damage monitoring of external patch repairs with guided ultrasonic wavescitations
- 2015Continuous debonding monitoring of a patch repaired helicopter stabilizer: Damage assessment and analysiscitations
- 2014Bayesian sensitivity analysis of flight parameters that affect main landing gear yield locations
- 2013On the structural health monitoring of repaired aerospace structures
- 2013Structural health monitoring and damage prognosis in composite repaired structures through the excitation of guided ultrasonic wavescitations
- 2011On impact damage detection and quantification for CFRP laminates using structural response data only
- 2011On impact damage detection and quantification for CFRP laminates using structural response data only
- 2011A cellular automaton model for predicting intergranular corrosion
- 2011Some experimental observations on the detection of composite damage using lamb wavescitations
- 2011On impact damage detection and quantification for CFRP laminatescitations
- 2011Principal component analysis of acoustic emission signals from landing gear componentscitations
- 2009Strategies for using cellular automata to locate constrained layer damping on vibrating structurescitations
- 2009Impact damage detection and quantification in CFRP laminates; a precursor to machine learning
- 2009Identification of impact damage in CRRP laminates using the NDT approach
- 2009Identification of impact damage in CRRP laminates using the NDT approach
- 2009Identification of impact damage in CRRP laminates using the NDT approach
- 2008Damage localisation in a stiffened composite panel
- 2008Damage localisation in a stiffened composite panelcitations
- 2008The effects of uncertainties within acoustic emission modelling
- 2008A cellular automaton based model for predicting intergranular corrosion in aerospace alloys
- 2008Model-based prognosis for intergranular corrosion
- 2007Damage location in a stiffened composite panel using lamb waves and neural networks
- 2007Damage detection using stress waves and multivariate statistics, an experimental case study of an aircraft componentcitations
- 2007Damage location in a stiffened composite panel using Lamb waves and neural networks
- 2006On the reproducibility of transducer coupling for acoustic emission testing
- 2001On the long-term stability of normal condition for damage detection in a composite panel
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document
Structural health monitoring and damage prognosis in composite repaired structures through the excitation of guided ultrasonic waves
Abstract
The interest in composite repair technologies has been recently increased following the wide applications of composite materials in aerospace industry. Bonded repair patch technology provides an alternative to mechanically fastened repairs with significantly higher performance. The work here demonstrates two case studies: a woven composite panel repaired with an external composite patch and a woven composite panel with a scarf repair that minimises discontinuities and provides smoother surface. In the first case, piezoelectric transducers were utilized in order to excite low frequency Lamb waves while the panel was tested under static tensile loading. In the second case, piezoelectric (PZT) transducers were surface bonded and the propagation of the first anti-symmetric Lamb waves mode was investigated while the panel was subjected to fatigue loading. Along with Lamb wave testing, additional techniques were used to monitor the extent of the developed damage such as 3-dimensional Digital Image Correlation, X-ray radiography and optical microscopic analysis. All signals in both cases were further processed with outlier analysis and linear and non linear principal component analysis in order to develop an appropriate damage prognosis strategy. The current work identifies the problems of the traditionally used novelty detection approaches and proposes solutions through the concept of principal curves and appropriate feature extraction techniques. © 2013 SPIE.