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Quantitative evaluation of the mechanical strength of titanium/composite bonding using laser-generated shock waves

Article dans une revue avec comité de lecture
Author
DUCOUSSO, Mathieu
BARDY, Simon
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
119523 DAM Île-de-France [DAM/DIF]
ROUCHAUSSE, Yann
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
BERGARA, Tomas
251296 RESCOLL (FRANCE)
JENSON, Frédéric
BERTHE, Laurent
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
CUVILLIER, Nicolas

URI
http://hdl.handle.net/10985/15416
DOI
10.1063/1.5020352
Date
2018
Journal
Applied Physics Letters

Abstract

Intense acoustic shock waves were applied to evaluate the mechanical strength of structural epoxy bonds between a TA6V4 titanium alloy and a 3D woven carbon/epoxy composite material. Two bond types with different mechanical strengths were obtained from two different adhesive reticulations, at 50% and 90% of conversion, resulting in longitudinal static strengths of 10 and 39 MPa and transverse strengths of 15 and 35 MPa, respectively. The GPa shock waves were generated using ns-scale intense laser pulses and reaction principles to a confined plasma expansion. Simulations taking into account the laser-matter interaction, plasma relaxation, and non-linear shock wave propagation were conducted to aid interpretation of the experiments. Good correlations were obtained between the experiments and the simulation and between different measurement methods of the mechanical strength (normalized tests vs laser-generated shock waves). Such results open the door toward certification of structural bonding.

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