Study of double step lap composite repairs on CFRP evaluators

Abstract : An innovative repair process and evaluation are proposed. Firstly, the originality of this work consists on the process used for the repair milling: an Abrasive Water-Jet milling. A doublestep lap coupon is chosen to demonstrate the feasibility of the milling process. This specimen is made of M10.1/38%/UD300 CHS 460 from Hexcel Composites. After milling, the removed material is reconstructed laying up the same prepreg material with a one-ply shift in the staking sequence. A Redux 609 adhesive film is used to ensure a correct bonding on the interface. Secondly, the originality concerns the mechanical characterization of the repair quality assessed through an innovative multi-axial mechanical test. It allows to choose multiaxial loadings according to the requirement. The selected test is a combined bending and compression test. Finally, results of mechanical tests are presented and discussed.
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Submitted on : Wednesday, July 17, 2019 - 2:47:47 PM
Last modification on : Tuesday, October 22, 2019 - 5:20:45 PM

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  • HAL Id : hal-02186849, version 1

Citation

Laurent Crouzeix, Yves Davila, Francis Collombet, Bernard Douchin, Y.-H. Grunevald, et al.. Study of double step lap composite repairs on CFRP evaluators. ECCM15 - The 15th European Conference on Composite Materials, Venice (Italy), June 24-28., 2012, Venice, Italy. ⟨hal-02186849⟩

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