| 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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Castro, Saullo G. P.
Delft University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2023Explainable Artificial Intelligence to Investigate the Contribution of Design Variables to the Static Characteristics of Bistable Composite Laminatescitations
- 2022Developing Equations for Free Vibration Parameters of Bistable Composite Plates Using Multi-Objective Genetic Programming
- 2022Developing Equations for Free Vibration Parameters of Bistable Composite Plates Using Multi-Objective Genetic Programming
- 2022Measurement of damage growth in ultrasonic spot welded joint
- 2021Design, modeling, optimization, manufacturing and testing of variable-angle filament-wound cylinderscitations
- 2021Design, modeling, optimization, manufacturing and testing of variable-angle filament-wound cylinderscitations
- 2021Measuring geometric imperfections of variable–angle filament–wound cylinders with a simple digital image correlation setupcitations
- 2021Measuring geometric imperfections of variable–angle filament–wound cylinders with a simple digital image correlation setupcitations
- 2021Measuring geometric imperfections of variable–angle filament–wound cylinders with a simple digital image correlation setupcitations
- 2021Semi-analytical modelling of variable stiffness laminates with discontinuitiescitations
- 2021Circumferential and radial lamina application for natural frequencies problems
- 2020Numerical investigation of rain droplet impact on offshore wind turbine blades under different rainfall conditionscitations
- 2020A multiaxial fatigue damage model for isotropic materialscitations
- 2019Supersonic Flutter and Buckling Optimization of Tow Steered Composite Platescitations
- 2018An active-passive nonlinear finite element model for electromechanical composite morphing beams
- 2017Aeroelastic behavior of stiffened composite laminated panel with embedded SMA wire using the hierarchical Rayleigh–Ritz methodcitations
- 2017Assembly of semi-analytical models to address linear buckling and vibration of stiffened composite panels with debonding defectcitations
- 2017Panel flutter analysis and optimization of composite tow steered platescitations
- 2017Buckling of axially compressed CFRP cylinders with and without additional lateral loadcitations
- 2016Design and Manufacture of Conical Shell Structures Using Prepreg Laminatescitations
- 2016Flutter of stiffened composite panels considering the stiffener's base as a structural elementcitations
- 2015Experimental nondestructive test for estimation of buckling load on unstiffened cylindrical shells using vibration correlation techniquecitations
- 2015Investigation of Buckling Behavior of Composite Shell Structures with Cutoutscitations
- 2015Experimental and numerical estimation of buckling load on unstiffened cylindrical shells using a vibration correlation techniquecitations
- 2014Numerical characterization of imperfection sensitive composite structurescitations
- 2014Geometric imperfections and lower-bound methods used to calculate knock-down factors for axially compressed composite cylindrical shellscitations
- 2014Verification study on buckling behaviour of composite cylinder with eccentric supports
Places of action
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article
Measuring geometric imperfections of variable–angle filament–wound cylinders with a simple digital image correlation setup
Abstract
Measuring the geometric imperfections in cylindrical shells is a critical step necessary to create accurate numerical models that can capture the imperfection-sensitive behavior of these structures. Modern composite structures, such as variable–angle filament–wound (VAFW) cylinders, have a unique imperfection signature that is still unknown to the scientific community. This new class of variable–stiffness structures developed by our research group combines wide tailoring capabilities with the efficient manufacturability enabled by filament winding process. The present study proposes a novel imperfection measurement method that is simple and applicable to both small and large structures. The topographic data is measured with only a pair of cameras. Practical aspects of using digital image correlation (DIC) are described and discussed in detail, such as lighting, focus adjustment, and calibration. State–of–the–art best–fit routines, based on least–squares optimization, are used to transform raw data into a common coordinate system. Finally, the transformed data is stitched to build a full 3D imperfection pattern that can be readily used in a nonlinear finite element analysis. The developed method is used to measure the imperfections of 12 VAFW cylinders. The mass of the cylinders is used to validate the geometric imperfections and evaluate the variability of the proposed methodology.