The Experts below are selected from a list of 30 Experts worldwide ranked by ideXlab platform
Louis Laberge Lebel - One of the best experts on this subject based on the ideXlab platform.
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Automated braiding of a complex aircraft Fuselage Frame using a non-circular braiding model
Composites Part A-applied Science and Manufacturing, 2017Co-Authors: Philippe Monnot, Jonathan Levesque, Louis Laberge LebelAbstract:Abstract Braided structural composites have the potential to replace aerospace primary structure traditionally manufactured with preimpregnated fabrics and cured in autoclave. An improved braiding model was developed and applied to a complex Fuselage Frame technological demonstrator. Numerical case studies were performed in order to assess their effectiveness and to determine the best braiding parameters. A radial braiding machine was coupled to an industrial robot. The Fuselage Frame demonstrator mandrel was overbraided with carbon fiber yarns. Measured braid angles showed a greater difference than what was expected between the web and the flange faces. Yarn friction and interlacing forces caused the yarns to curve near the edges of the face, therefore causing the measured braid angles to vary along the face width. Moreover, discrepancies in the model’s outputs prevented the braid fell front to conform around the severe cross-section variations as well as causing yarn slip over the corners.
Philippe Monnot - One of the best experts on this subject based on the ideXlab platform.
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Automated braiding of a complex aircraft Fuselage Frame using a non-circular braiding model
Composites Part A-applied Science and Manufacturing, 2017Co-Authors: Philippe Monnot, Jonathan Levesque, Louis Laberge LebelAbstract:Abstract Braided structural composites have the potential to replace aerospace primary structure traditionally manufactured with preimpregnated fabrics and cured in autoclave. An improved braiding model was developed and applied to a complex Fuselage Frame technological demonstrator. Numerical case studies were performed in order to assess their effectiveness and to determine the best braiding parameters. A radial braiding machine was coupled to an industrial robot. The Fuselage Frame demonstrator mandrel was overbraided with carbon fiber yarns. Measured braid angles showed a greater difference than what was expected between the web and the flange faces. Yarn friction and interlacing forces caused the yarns to curve near the edges of the face, therefore causing the measured braid angles to vary along the face width. Moreover, discrepancies in the model’s outputs prevented the braid fell front to conform around the severe cross-section variations as well as causing yarn slip over the corners.
Jonathan Levesque - One of the best experts on this subject based on the ideXlab platform.
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Automated braiding of a complex aircraft Fuselage Frame using a non-circular braiding model
Composites Part A-applied Science and Manufacturing, 2017Co-Authors: Philippe Monnot, Jonathan Levesque, Louis Laberge LebelAbstract:Abstract Braided structural composites have the potential to replace aerospace primary structure traditionally manufactured with preimpregnated fabrics and cured in autoclave. An improved braiding model was developed and applied to a complex Fuselage Frame technological demonstrator. Numerical case studies were performed in order to assess their effectiveness and to determine the best braiding parameters. A radial braiding machine was coupled to an industrial robot. The Fuselage Frame demonstrator mandrel was overbraided with carbon fiber yarns. Measured braid angles showed a greater difference than what was expected between the web and the flange faces. Yarn friction and interlacing forces caused the yarns to curve near the edges of the face, therefore causing the measured braid angles to vary along the face width. Moreover, discrepancies in the model’s outputs prevented the braid fell front to conform around the severe cross-section variations as well as causing yarn slip over the corners.
Giuseppe Sala - One of the best experts on this subject based on the ideXlab platform.
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a numerical and experimental approach to optimise sheet stamping technologies part ii aluminium alloys rubber forming
Materials & Design, 2001Co-Authors: Giuseppe SalaAbstract:Abstract The conventional way to develop press-formed metallic components requires a burdensome trial-and-error process for setting-up the technology, whose success chiefly depends on operator's skill and experience. In the aeronautical field, where sheet metal press-formed structures are produced in small series, a too lengthy and costly development phase cannot be accepted; the small number of components not allowing the investments depreciation. For these reasons, it is necessary that, during the conceptual design, possible technological troubles are preliminarily faced by means of numerical simulations. In the following report, the Guerin rubber-forming process of an aluminium alloy Fuselage Frame belonging to AerMacchi MB-339 trainer aircraft was optimised through this approach. Several effects, depending on stamping velocity, component geometry, sheet metal heat treatment, elastomeric rubber pad constitutive law and thickness are taken into account. It is shown how the preliminary tuning of these parameters allows us to minimise defects, increase component quality and reduce set-up times, complying at the same time to the demanding aeronautical requirements.
Jianqiang Zheng - One of the best experts on this subject based on the ideXlab platform.
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The crashworthiness prediction of 2D triaxially braided composite Fuselage Frame under transverse impact load
International Journal of Crashworthiness, 2019Co-Authors: Jianqiang ZhengAbstract:The Fuselage Frame, an apron construction of the typical transport aircraft Fuselage, manufactured with carbon fibre/epoxy 2D triaxially braided composites, hinders the crashworthy aircraft analysi...
