Improving performance of composite/metal T-joints by using corrugated aluminum stiffeners

Chiara Morano; Ahmed Wagih; Marco Alfano; Gilles Lubineau

doi:10.1016/j.compstruct.2022.116652

Improving performance of composite/metal T-joints by using corrugated aluminum stiffeners

Chiara Morano, Ahmed Wagih, Marco Alfano^*, Gilles Lubineau

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The present work addresses the mechanical performance of adhesive bonded composite/metal T-joints comprising a CFRP skin bonded to an aluminum (AA5754) stiffener. Prior research on the subject has shown that the structural performances of T-joints can be enhanced by a variety of methods, including stitching and z-pinning. Here we propose an alternative approach that does not compromise the integrity of the skin, as it only relies on tailoring the architecture of the stiffener. Our results show that using corrugated flanges with a square wave profile, superior performances, i.e., ＋65% pull-off strength and ＋416% absorbed energy, can be achieved with respect to the conventional configuration.

Original language	English (US)
Article number	116652
Journal	Composite Structures
Volume	307
DOIs	https://doi.org/10.1016/j.compstruct.2022.116652
State	Published - Mar 1 2023

Bibliographical note

Funding Information:
This research was funded by King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award number OSR-2017-CRG6-3388.01 .

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

Adhesive joints
Aluminum alloy
CFRP
T-joint

ASJC Scopus subject areas

Ceramics and Composites
Civil and Structural Engineering

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10.1016/j.compstruct.2022.116652

Cite this

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title = "Improving performance of composite/metal T-joints by using corrugated aluminum stiffeners",

abstract = "The present work addresses the mechanical performance of adhesive bonded composite/metal T-joints comprising a CFRP skin bonded to an aluminum (AA5754) stiffener. Prior research on the subject has shown that the structural performances of T-joints can be enhanced by a variety of methods, including stitching and z-pinning. Here we propose an alternative approach that does not compromise the integrity of the skin, as it only relies on tailoring the architecture of the stiffener. Our results show that using corrugated flanges with a square wave profile, superior performances, i.e., ＋65% pull-off strength and ＋416% absorbed energy, can be achieved with respect to the conventional configuration.",

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author = "Chiara Morano and Ahmed Wagih and Marco Alfano and Gilles Lubineau",

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AU - Wagih, Ahmed

AU - Alfano, Marco

AU - Lubineau, Gilles

N1 - Funding Information: This research was funded by King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under award number OSR-2017-CRG6-3388.01 . Publisher Copyright: © 2022 Elsevier Ltd

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N2 - The present work addresses the mechanical performance of adhesive bonded composite/metal T-joints comprising a CFRP skin bonded to an aluminum (AA5754) stiffener. Prior research on the subject has shown that the structural performances of T-joints can be enhanced by a variety of methods, including stitching and z-pinning. Here we propose an alternative approach that does not compromise the integrity of the skin, as it only relies on tailoring the architecture of the stiffener. Our results show that using corrugated flanges with a square wave profile, superior performances, i.e., ＋65% pull-off strength and ＋416% absorbed energy, can be achieved with respect to the conventional configuration.

AB - The present work addresses the mechanical performance of adhesive bonded composite/metal T-joints comprising a CFRP skin bonded to an aluminum (AA5754) stiffener. Prior research on the subject has shown that the structural performances of T-joints can be enhanced by a variety of methods, including stitching and z-pinning. Here we propose an alternative approach that does not compromise the integrity of the skin, as it only relies on tailoring the architecture of the stiffener. Our results show that using corrugated flanges with a square wave profile, superior performances, i.e., ＋65% pull-off strength and ＋416% absorbed energy, can be achieved with respect to the conventional configuration.

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Improving performance of composite/metal T-joints by using corrugated aluminum stiffeners

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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