| People | Locations | Statistics |
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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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Moradi, Morteza
Delft University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Innovative welding integration of acousto-ultrasonic composite transducers onto thermoplastic composite structurescitations
- 2023Intelligent Health Indicators Based on Semi-supervised Learning Utilizing Acoustic Emission Datacitations
- 2023Acousto-ultrasonic composite transducers integration into thermoplastic composite structures via ultrasonic welding
- 2023Intelligent health indicator construction for prognostics of composite structures utilizing a semi-supervised deep neural network and SHM datacitations
- 2023Developing health indicators for composite structures based on a two-stage semi-supervised machine learning model using acoustic emission datacitations
- 2023Delamination Size Prediction for Compressive Fatigue Loaded Composite Structures Via Ultrasonic Guided Wave Based Structural Health Monitoring
- 2021Effect of honeycomb core on free vibration analysis of fiber metal laminate (FML) beams compared to conventional compositescitations
- 2020Investigation of nonlinear post-buckling delamination in curved laminated composite panels via cohesive zone modelcitations
- 2019Edge disbond detection of carbon/epoxy repair patch on aluminum using thermographycitations
- 2019Numerical and experimental study for assessing stress in carbon epoxy composites using thermographycitations
- 2019Post buckling behavior analysis of unidirectional saddle shaped composite panels containing delaminations using cohesive zone modeling
Places of action
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article
Edge disbond detection of carbon/epoxy repair patch on aluminum using thermography
Abstract
The composite patches are used to repair the damaged metal and composite structures in different industries, especially in the aerospace industry. One of the most dangerous types of defects are the disbond defects in repaired structures because of cutting the flow of stress to the patch. Disbond defects are often initiated at the edge of the repair patch and propagated to the center by degradation in service. Flash thermography inspection at the edge of repair patch is a challenging issue due to the edge effect.<br/><br/>In the present study, the disbonds at the edges of composite repair patch have been investigated by step heating thermography method. Since, raw thermal data are usually not suitable for quantitative defects evaluation and so, different image processing methods, including Fourier transform (FT), one- and two-dimensional Daubechie's wavelet transforms have been performed. Furthermore, for the first time, the three dimensional wavelet transform has been used to optimize the results in terms of signal to noise ratio and time processing. Moreover, the simulation of the thermography inspection process has been carried out using finite element modeling (FEM). The model enables a better understanding of the heat transfer process and provides a means of establishing the experimental set-up parameters required for inspecting appropriately the edge of the repair patch on metal structures. Results provided some suggestions in selecting more suitable post processing for interrogating of adhesive bonded composite with different states.