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Communication Dans Un Congrès Année : 2020

Multi-Scales Analysis of the Damage Induced during One-Shot Drilling of CFRP/Titanium Alloy

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Résumé

One-shot drilling of multi-stacks made carbon fibers reinforced polymer (CFRP) and titanium alloy is a challenging machining process. In fact, due to the difference in the mechanical properties of both materials combined with the anisotropy of the composite, the mechanisms of material removal are accompanied by several damages. In fact, the continous chips of the isotropic part and the high level of the thrust force are the main factors responsible of damage of the composite part. In this paper, a 3D Finite Elements Method model is proposed to predict the impact of the machining parameters on the thrust force, the interface behavior (CFRP/Ti) as well as the damage generated in the composite. The validation of this model is conducted by performing drilling tests using a dynamometer. The obtained results have shown that, at the macro scale, the thrust forces predicted by the numerical model are in good agreement with those measured in the CFRP and in the Ti. In addition, at the meso scale the cartographies of the damage predicted by the model using Hashin cretiria reveal that, the damage observed at the hole entry is due to the matrix fracture by compressive and tensile modes. \textcopyright CCM 2020 - 18th European Conference on Composite Materials. All rights reserved.
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Dates et versions

hal-03704085 , version 1 (24-06-2022)

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  • HAL Id : hal-03704085 , version 1

Citer

M.F. Ameur, R. Zitoune, M. Habak, M. Kenane. Multi-Scales Analysis of the Damage Induced during One-Shot Drilling of CFRP/Titanium Alloy. ECCM 2018 - 18th European Conference on Composite Materials, Jun 2020, Athènes, Greece. ⟨hal-03704085⟩

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