| 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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Yildiz, M.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2025Assessing the fracture and dynamic mechanical performance of CF/PEKK joints bonded with epoxy-based adhesive film for aerospace applications: impact of thermal and cycling hygrothermal conditions
- 2024Annealing impact on mechanical performance and failure analysis assisted with acoustic inspection of carbon fiber reinforced poly‐ether‐ketone‐ketone composites under flexural and compressive loads
- 2024Comprehensive Analysis of Damage Progression in High-performance Thermoplastic Composites Through Multi-instrumental Structural Health Monitoring Approaches
- 2024Palladium Metal Nanocomposites Based on PEI-Functionalized Nitrogen-Doped Graphene Quantum Dots: Synthesis, Characterization, Density Functional Theory Modeling, and Cell Cycle Arrest Effects on Human Ovarian Cancer Cells.citations
- 2023A novel damage evaluation of CFRPs under mode-I loading by using multi-instrument structural health monitoring methodscitations
- 2023Buckling and fracture analysis of thick and long composite cylinders with cutouts under axial Compression: An experimental and numerical campaigncitations
- 2022Solidification behaviour of austenitic stainless steels during welding and directed energy depositioncitations
- 2021Damage growth and failure detection in hybrid fiber composites using experimental in-situ optical strain measurements and smoothing element analysiscitations
- 2021Failure sequence determination in sandwich structures using concurrent acoustic emission monitoring and postmortem thermographycitations
- 2020A smoothed iFEM approach for efficient shape-sensing applications: Numerical and experimental validation on composite structurescitations
- 2020An experimental implementation of inverse finite element method for real-time shape and strain sensing of composite and sandwich structurescitations
- 2019Microscopic analysis of failure in woven carbon fabric laminates coupled with digital image correlation and acoustic emissioncitations
Places of action
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article
Failure sequence determination in sandwich structures using concurrent acoustic emission monitoring and postmortem thermography
Abstract
This study provides a novel approach for damage classification and failure sequence evaluation in sandwich panel composite materials under flexural loading condition merely by using acoustic emission monitoring in interrupted mechanical tests and postmortem lock in thermography analysis. The studied sandwich panels consist of glass fiber reinforced phenolic skins and Nomex honeycomb core which are used extensively in the aerospace industry. While one of the standard flexural samples is mechanically tested up to global failure, the other specimens are loaded till a certain load level and the tests are interrupted. Acoustic emission hits are recorded throughout the mechanical tests by using piezoelectric sensors, and are classified using a well-established clustering algorithm. The damaged samples are then investigated via lock in thermography technique to identify the hidden failure progress inside the sandwich structure. Acoustic emission monitoring is successfully used to mark the change of mechanical response under flexural loading condition. The results of acoustic emission analysis indicated four different clusters associated with four major failure modes occurring due to mechanical loading. Correlating failure progress observed in thermography results with the fraction of acoustic emission clusters registered during mechanical tests helped to attribute each class of acoustic emission hits to a specific failure type. Upon using the interrupted test methodology together with the lock-in thermography technique, one can reliably identify the damage types and their sequence of manifestation during flexural tests. The results show that successful analysis of visually hidden failure progress in sandwich panel composites under out of plane loading condition can be attained by using structural health monitoring techniques and quasi static tests.