Manufacturing requirements in design: The RTM process in aeronautics

Mouton, Serge; Teissandier, Denis; Sébastian, Patrick; Nadeau, Jean-Pierre

doi:10.1016/j.compositesa.2009.09.027

Cited by 26 publications

(21 citation statements)

References 10 publications

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“…Prepegging, resin transfer molding (RTM) and vacuum assisted resin infiltration (VARI, similar to RTM, but differs in infiltration pressure) for making thermoset polymer based composites [14,15]. Although, these processes are quite a decade old for artificial fiber reinforced composite, but its versatility still attracted the natural fiber composite researchers to utilize these techniques [16].…”

Section: Introductionmentioning

confidence: 99%

“…Stacking the UD ply in different angles gives composite with anisotropic physical and mechanical properties [13]. However, multiply composites of superior and moderately superior mechanical properties, with up to 50% volume fraction of fiber reinforcement, are possible to fabricate through conventional procedures like compression molding and hand-lay-up for jute like natural fiber [14].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Fiber Orientation on the Tensile Properties of Jute Epoxy Laminated Composite

et al. 2012

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Jute, the pride of Bangladesh, has gained interest in the composite field due to its superior specific properties compared to artificial manmade fibers like glass, kevlar, etc. In this study, jute composites made with the vacuum assisted resin infiltration (VARI) techniques were investigated. Jute fiber preform stacking sequences were (0/0/0/0), 0/+45°/-45°/0 and 0/90°/90°/0. For all cases, a total of 25% volume fraction of jute fiber was incorporated. The developed composites were characterized by tensile tests and the experimental results thus obtained were compared with that of the theoretical values. After tensile tests, fracture surfaces were cut and observed under high resolution FEG SEM. In the case of 0/0/0/0 and 0/+45°/-45°/0 lamina composites, longitudinal tensile strength has been found to be higher than that of the transverse direction. However, for 0/90°/90°/0 lamina composites, tensile strengths in both directions were very close to each other. For all developed composites, experimental results revealed that the tensile properties of the developed composites strongly depend on the tensile strength of jute fiber and that the tensile properties of jute fiber are very much defect-sensitive. Finally, a discussion of the tensile behaviors of the composites is initiated in terms of the fracture morphologies observed under the SEM.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Fiber Orientation on the Tensile Properties of Jute Epoxy Laminated Composite

et al. 2012

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“…Thus, the surface quality produced is due to phenomena such as pullout during machining and the diameter of the fibers. These phenomena occurred during previous tests on Hextool 10 and also in the literature with other composite materials. 26,30 Figure 8(b) and (d) shows a surface machined with a radial depth of cut a e of 1 mm; broken fibers and resin pullout still appear.…”

Section: Chardon Et Almentioning

confidence: 75%

“…The LCM process allows complex parts to be manufactured with an excellent geometric and structural quality compared to traditional prepreg-autoclave processes. 10 Hexcel Composites Company proposes a new carbon fiber-reinforced thermosetting plastic named Hextool. This material is designed to replace the metallic molds used in the LCM process.…”

Section: Materials and Machining Processmentioning

confidence: 99%

Study of surface finish of fiber-reinforced composite molds

Chardon

Chanal

Duc

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part B:

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One of the primary processes for the production of composite parts is the liquid composite molding process. This process is based on the injection of resin into a mold, which is usually metallic. Today, studies are being undertaken to produce these molds using Hextool ä , a carbon fiber-reinforced thermosetting plastic. The molds, constructed by draping prepregs, must be finished by free-form machining to ensure the dimensional and surface quality requirements. An arithmetic roughness of 0.8 mm is required, and this quality is not attained by milling operations. Thus, a manual polishing operation is necessary. However, to minimize the time taken by this manual operation, it is necessary to verify the roughness obtained by milling. Thus, the work presented in this article consists first of a study of the capability of milling to produce molds from Hextool with given surface quality requirements. The conclusion of this study is to define values of radial depth of cut to attain a surface quality with minimum machining time. Second, this work highlights how to replace the manual polishing operation by a machining operation with an abrasive diamond tool. Thus, the capability of an abrasive diamond tool to machine a mold with high surface requirements is discussed.

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“…An important field of application is the one of carbone/epoxy composites that exhibit adaptability during the design [3] and high-level integration during the manufacturing process [4]. In particular, recent developments in the aeronautical industry have highlighted the important role of composite materials in improving aircraft design [5].…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical and hygroelastic properties of an epoxy system under humid and cold-warm cycling conditions

Yagoubi

Lubineau

Saghir

et al. 2014

Polymer Degradation and Stability

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. a b s t r a c tIn this paper, we study the hygrothermal aging of an anhydride-cured epoxy under temperature and hygrometry conditions simulating those experienced by an aircraft in wet tropical or subtropical regions. Gravimetric and dimensional measurements were performed and they indicate that there are three stages in this aging process: the first one, corresponding to the early cycles can be called the "induction stage". The second stage of about 1000 cycles duration, could be named the "swelling stage", during which the volume increase is almost equal to the volume of the (liquid) water absorbed. Both the first and second stages are accompanied by modifications of the mechanical properties and the glass transition temperature. During the third ("equilibrium") stage, up to 3000 cycles, there is no significant change in the physical properties despite the continuous increase of water uptake. This can be explained by the fact that only physically sorbed water can influence physical properties.

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Manufacturing requirements in design: The RTM process in aeronautics

Cited by 26 publications

References 10 publications

Effect of Fiber Orientation on the Tensile Properties of Jute Epoxy Laminated Composite

Effect of Fiber Orientation on the Tensile Properties of Jute Epoxy Laminated Composite

Study of surface finish of fiber-reinforced composite molds

Thermomechanical and hygroelastic properties of an epoxy system under humid and cold-warm cycling conditions

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