Surface Modification of Titanium Alloy with Laser Treatment
The effect of laser surface treatment parameters on the residual strength of titanium alloy has been investigated. The influence of the laser surface treatment on the bonding strength between the titanium and poly-ether-ketone-ketone (PEKK) surfaces was also evaluated and compared to those offered by titanium foils without surface treatment to optimize the laser parameters. Material characterization using an optical microscope was carried out to study the microstructure and to measure the mean roughness value of the titanium surface. The results showed that the surface roughness shows a significant dependency on the laser power parameters in which surface roughness increases with the laser power increment. Moreover, the results of the tensile tests have shown that there is no significant dropping in tensile strength for the treated samples comparing to the virgin ones. In order to optimize the laser parameter as well as the corresponding surface roughness, single-lap shear tests were conducted on pairs of the laser treated titanium stripes. The results showed that the bonding shear strength between titanium alloy and PEKK film increased with the surface roughness increment to a specific limit. After this point, it is interesting to note that there was no significant effect for the laser parameter on the bonding strength. This evidence suggests that it is not necessary to use very high power of laser to treat titanium surface to achieve a good bonding strength between titanium alloy and the PEKK film.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1340615Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 775
 F. D. Morinière, R. C. Alderliesten, and R. Benedictus, “Modelling of impact damage and dynamics in fibre-metal laminates - A review,” Int. J. Impact Eng., vol. 67, pp. 27–38, 2014.
 P. Cortés and W. J. Cantwell, “Fracture properties of a fiber-metal laminates based on magnesium alloy,” J. Mater. Sci., vol. 39, pp. 1081–1083, 2004.
 A. Vlot, “Low-velocity impact loading on fibre reinforced aluminium laminates (ARALL and GLARE) and other aircraft sheet materials.” Delft University of Technology, 1993.
 G. V Reyes and W. J. Cantwell, “The mechanical properties of fibre -metal laminates based on glass fibre reinforced polypropylene,” vol. 60, pp. 2–6, 2000.
 J. G. Carrillo and W. J. Cantwell, “Mechanical properties of a novel fiber-metal laminate based on a polypropylene composite,” Mech. Mater., vol. 41, pp. 828–838, 2009.
 J. Fan, W. Cantwell, and Z. Guan, “The low-velocity impact response of fiber-metal laminates,” J. Reinf. Plast. Compos., vol. 30, pp. 26–35, 2011.
 J. Zhou, Z. W. Guan, and W. J. Cantwell, “The influence of strain-rate on the perforation resistance of fiber metal laminates,” Compos. Struct., vol. 125, pp. 247–255, 2015.
 P. Molitor, V. Barron, and T. Young, “Surface treatment of titanium for adhesive bonding to polymer composites: a review,” Int. J. Adhes. Adhes., vol. 21, pp. 129–136, 2001.
 E. Li and W. S. Johnson, “An Investigation into the Fatigue of a Hybrid Titanium Composite Laminate,” J. Compos. Technol. Res., vol. 20, pp. 3–12, 1998.
 V. D. Ta, A. Dunn, T. J. Wasley, J. Li, R. W. Kay, J. Stringer, P. J. Smith, E. Esenturk, C. Connaughton, and J. D. Shephard, “Laser textured superhydrophobic surfaces and their applications for homogeneous spot deposition,” Appl. Surf. Sci., vol. 365, pp. 153–159, 2016.