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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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Rolfes, Raimund
Leibniz University Hannover
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Evaluating the mechanical behavior of carbon composites with varied ply-thicknesses using acoustic emission measurements
- 2024A thermodynamically consistent physics-informed deep learning material model for short fiber/polymer nanocompositescitations
- 2024Phase-field modeling of fracture in viscoelastic–viscoplastic thermoset nanocomposites under cyclic and monolithic loading
- 2023Analysis of fatigue crack and delamination growth in GFRP composites in tension and compression loading
- 2023Refined Semi-Analytical Framework to Predict the Natural Vibration Characteristics of Bistable Laminatescitations
- 2023A new base of wind turbine noise measurement data and its application for a systematic validation of sound propagation modelscitations
- 2022Effect of moisture on the nonlinear viscoelastic fracture behavior of polymer nanocompsites: a finite deformation phase-field model
- 2022Efficient generation of geodesic random fields in finite elements with application to shell bucklingcitations
- 2021Robust improvement of the asymmetric post-buckling behavior of a composite panel by perturbing fiber paths
- 2020An efficient semi-analytical framework to tailor snap-through loads in bistable variable stiffness laminatescitations
- 2019Evaluation and modeling of the fatigue damage behavior of polymer composites at reversed cyclic loadingcitations
- 2019Progressive Failure Analysis Using Global-Local Coupling Including Intralaminar Failure and Debondingcitations
- 2018Effect of spatially varying material properties on the post-buckling behaviour of composite panels utilising geodesic stochastic fields
- 2018Effect of spatially varying material properties on the post-buckling behaviour of composite panels utilising geodesic stochastic fields
- 2018Experimental characterization and constitutive modeling of the non-linear stress–strain behavior of unidirectional carbon–epoxy under high strain rate loadingcitations
- 2018Analysis of skin-stringer debonding in composite panels through a two-way global-local methodcitations
- 2018A structural design concept for a multi-shell blended wing body with laminar flow control
- 2015An elastic molecular model for rubber inelasticitycitations
- 2014Material Modelling of Short Fiber Reinforced Thermoplastic for the FEA of a Clinching Test
- 2014Investigating the VHCF of composite materials using new testing methods and a new fatigue damage model
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document
Investigating the VHCF of composite materials using new testing methods and a new fatigue damage model
Abstract
Composite materials are used in several fatigue-relevant applications nowadays and characteristicfatigue data is needed. However, composites have to be told apart from metals and so have to be the fatiguebehaviors. Unfortunately, the established testing and simulation methods are not suitable for composites.However, two new experimental approaches providing accelerated VHCF testing are presented. A resonantand a non-resonant setup are used. For the first setup the resonant behavior of specimen and test stand areused to load GFRP tubes at roughly 600Hz and a load ratio of R=-1. The second approach utilizes aspecifically designed four-point bending test running at 50-80 Hz. Fatigue data including stiffnessdegradation, evaluation of crack density and delamination are gained up to10 8 cycles. Both methods reachtesting frequencies beyond classic testing methods and thus allow time efficient VHCF testing. First resultsfor fatigue testing with glass-fiber-reinforced plastics are presented.Furthermore, a new layer-based fatigue damage model (FDM) is presented, which is physically motivated byusing an approach that relates energy dissipated under quasi-static and the energy dissipated under cyclicloading. The Puck failure criterion is used and has been extended with degradation factors for analyzingdiscontinuous damage. Load interactions as well as nonlinear damage accumulation are taken into account.Degradation of stiffness and strength can be calculated for every single layer over the simulated lifetime.