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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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Misra, A.
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Topics
Publications (9/9 displayed)
- 2024Dynamic strain gradient brittle fracture propagation: comparison with experimental evidence
- 2021Hierarchical and heterogeneous multiphase metallic nanomaterials and laminatescitations
- 2020Experimental Methods in Pantographic Structurescitations
- 2019Aspirin & clopidogrel non-responsiveness & its association with genetic polymorphisms in patients with myocardial infarction.citations
- 2014Effect of layer thickness on the high temperature mechanical properties of Al/SiC nanolaminatescitations
- 2008Melt mixed composites of poly(ethylene-co-methacrylic acid) lonomers and multiwall carbon nanotubes: Influence of specific interactionscitations
- 2007Rheology, morphology, and crystallization behavior of melt-mixed blends of polyamide6 and acrylonitrile-butadiene-styrene: Influence of reactive compatibilizer premixed with multiwall carbon nanotubescitations
- 2006Study on fatigue and energy-dissipation properties of nanolayered Cu/Nb thin filmscitations
- 2005Thermal stability of sputter-deposited 330 austenitic stainless-steel thin films with nanoscale growth twinscitations
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document
Study on fatigue and energy-dissipation properties of nanolayered Cu/Nb thin films
Abstract
Energy dissipation and fatigue properties of nano-layered thin films are less well studied than bulk properties. Existing experimental methods for studying energy dissipation properties, typically using magnetic interaction as a driving force at different frequencies and a laser-based deformation measurement system, are difficult to apply to two-dimensional materials. We propose a novel experimental method to perform dynamic testing on thin-film materials by driving a cantilever specimen at its fixed end with a bimorph piezoelectric actuator and monitoring the displacements of the specimen and the actuator with a fibre-optic system. Upon vibration, the specimen is greatly affected by its inertia, and behaves as a cantilever beam under base excitation in translation. At resonance, this method resembles the vibrating reed method conventionally used in the viscoelasticity community. The loss tangent is obtained from both the width of a resonance peak and a free-decay process. As for fatigue measurement, we implement a control algorithm into LabView to maintain maximum displacement of the specimen during the course of the experiment. The fatigue S-N curves are obtained.