Influence of machining parameters and new nano-coated tool on drilling performance of CFRP/Aluminium sandwich

Zitoune, Rédouane; Krishnaraj, V.; Almabouacif, Belkacem Sofiane; Collombet, Francis; Šı́ma, M.; Jolin, Alain

doi:10.1016/j.compositesb.2011.08.054

Cited by 186 publications

(123 citation statements)

References 27 publications

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“…This is logical, taking into account the assumed plane strain hypothesis where b is considered constant. Assuming this hypothesis, b can be calculated by Equation (4). So, the obtained theoretical value is b = 1.13 mm.…”

Section: Shear Angle (ϕ)mentioning

confidence: 99%

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Analysis of the Chip Geometry in Dry Machining of Aeronautical Aluminum Alloys

et al. 2017

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Aluminum alloys are widely used in the manufacturing of structural parts for aircraft, frequently in combination with other materials such as CFRP (Carbon Fiber Reinforced Polymer), to form FML (Fiber Metal Laminates) structures (CFRP/Al). The dry machining of these structures presents several problems, some of which are related to chip evacuation, either when machining aluminum alloys as an isotropic material, or during hybridization with composites. In this work, a study of the way in which cutting parameters influence the chip morphology in the dry machining of UNS A97075-T6 (Al-Zn) and UNS A92024-T3 (Al-Cu) alloys, is performed. Thus, different geometric parameters of the chip morphology have been obtained, and their evolution with feed has been analysed. Finally, the different relationships which occur between these geometric parameters and feed, have been obtained. These relationships allow a prediction of the evolution of some of the geometric parameters of the chip, as a function of feed.

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Section: Shear Angle (ϕ)mentioning

confidence: 99%

“…However, in the last few decades, new materials, such as Carbon Fiber Reinforced Polymers (CFRP), are being used in the manufacturing of these parts [3]. Frequently, these new materials are utilized in combination with light alloys, to form Fiber Metal Laminates (FML) structures (CFRP/Al) [4].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Chip Geometry in Dry Machining of Aeronautical Aluminum Alloys

et al. 2017

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“…Um estudo sobre furação de placas de CPRF/alumínio foi realizado com brocas de metal duro classe K20 por by Zitoune et al [18] . Foram apresentados resultados experimentais que relacionavam velocidade de rotação, avanço e diâmetro da broca sobre a força de avanço.…”

Section: Poliamidas Reforçadas E Sua Usinagemunclassified

Usinabilidade de materiais compósitos poliméricos para aplicações automotivas

et al. 2014

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Resumo: A cada dia o avanço tecnológico nos leva a encruzilhadas como a construção de veículos mais leves, com menor consumo de combustível e mais seguros. Neste sentido, materiais compósitos poliméricos são materiais usados atualmente em diferentes aplicações nas quais a leveza combinada com um alto módulo de elasticidade são características importantes. Poliamidas reforçadas com fibras de vidro se apresentam como materiais de grande futuro em aplicações automotivas. Desta forma, torna-se importante o estudo do comportamento deste tipo de material quando submetidos a processos de usinagem. Dentre os processos de usinagem o processo de furação é um dos mais utilizados nos componentes de material compósito. Neste trabalho será analisada a influência do avanço, da velocidade de corte e da geometria da ferramenta na força de avanço, pressão específica de corte e desvios dimensionais do furo realizado. Os testes foram realizados em poliamida sem reforço (PA6) e reforçada com 30% fibra de vidro (PA66-GF30) utilizando brocas de carbonetos sinterizados (K20) com ângulos de ponta diferente. Os resultados apontam claramente para a melhor usinabilidade do material reforçado em comparação ao sem reforço. Palavras-chave: Compósitos, polímeros reforçados, usinabilidade, furação, danos. Machining Behavior of Polymer Composites Materials for Automotive ApplicationsAbstract: The continuous technological advance has led to the challenge of building lighter and safer vehicles, but with lower fuel consumption. Within this scenario, polymeric composites are materials currently used in different applications, where lightweight combined with high modulus of elasticity are important features. Polyamide reinforced with glass fiber face a promising future for automotive applications, thus becoming important to study the behavior of this type of material when subjected to machining processes. Among the machining processes, drilling is one of the most widely applied to composite materials. In this work the influence of feed rate, cutting speed and tool geometry on thrust force, specific cutting pressure and hole dimensional deviations is investigated. The tests were performed on unreinforced polyamide (PA6) and on polyamide reinforced with 30 wt % glass fiber (PA66-GF30) using tungsten carbide drills (K20) with different tip angles. The results clearly indicate the superior machinability of the reinforced material, compared with the unreinforced polyamide. Gerais -UFMG, Av. Antônio Carlos, 6627, Campus Pampulha, CEP 31270-901, Belo Horizonte, MG, Brasil, e-mail: juan@ufmg.br Keywords: Composites, reinforced polymers, machinability, drilling, damage. Autor para correspondência: Juan Aarlos Aampos Aubio, Departamento de Engenharia Mecânica, Universidade Federal de Minas IntroduçãoOs polímeros são macromoléculas de elevada massa molecular, resultante de reações químicas de polimerização e formadas por unidades menores denominadas monômeros. Polímeros podem ser de origem natural, derivados de substâncias obtidas de plantas, animais ou min...

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“…In the recent ten years, a quantity of researches have been done on the high/ultra-high speed machining on aluminum alloys but little attention has been given to the study on the heavy cutting frames or thin-walled structures under the medium or low cutting speed [6][7][8][9][10][11][12][13]. For these special structures, a combination cutting parameters of very big axial and radial depth of cut, very high feed rate was often selected when machining [7][8].…”

Section: Introductionmentioning

confidence: 99%