Laser surface treatment for enhanced titanium to carbon fiber‑reinforced polymer adhesion.
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Data
2017
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Resumo
The adhesion between carbon fiber-reinforced
polymer (CFRP) and titanium parts can be improved by
laser surface texturing before gluing them together. Here, a
pulsed Nd:YAG laser was employed before bonding of the
textured surfaces using an epoxy paste adhesive. To investigate
the influence of the laser parameters, the roughness
of the surfaces were characterized and correlated to the
wettability, by measuring the contact angles of water droplets.
Scanning electron microscope (SEM) characterization
was also performed showing that under careful conditions,
the fiber structure could be maintained. Tensile tests were
performed to evaluate the influence of the laser treatment
parameters on the joining efficiency. The lap-joint tensile
strength tests presented the best results when the titanium
surfaces were treated using 5.03 × 10−3 J pulses and the
CFRP sample treated with 5.03 × 10−4 or 5.03 × 10−3 J
or even using a virginal CFRP surface. Using a virginal
CFRP surface, the critical load of fiber delamination was
increased and as a consequence the tensile strength attains
the highest level of 8.2 MPa.
Descrição
Palavras-chave
Laser surface treatment, Adhesive bonding, Titanium, Carbon fiber-reinforced polymer
Citação
PALAVRA, A. et al. Laser surface treatment for enhanced titanium to carbon fiber‑reinforced polymer adhesion. Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 17, p. 01-08, 2017. Disponível em: <https://link.springer.com/article/10.1007/s40430-017-0826-5>. Acesso em: 29 set. 2017.