Modelling of laser impact on typical composites aeronautical structures for bonding quality assessment
Massively used in aeronautical structures, composites are nowadays essential in the search for a more ecological and successful industry. Their low density enables weight reduction and then decreases airplanes consumption. However, the current composites assembly process represents a limitation in their use. In fact, we do not have any reliable, industrialized and non-destructive technology to control the adhesive quality. Then composites are also riveted which adds weight and a drilling process during which fibres can be locally damaged. For about 10 years, the LASAT (LAser Shock Adhesion Test) technology appears to be a promising alternative as a non-destructive control mean to asses bonding quality. The laser impact creates a plasma that induces shock waves propagation in the structure. The LASAT technology can also be used to generate damage anywhere in the assembly thickness. The experimental technology is mature but is lacking a numerical tool in order to calibrate the input laser parameters depending on the targeted results.
https://www.dynalook.com/conferences/14th-european-ls-dyna-conference-2023/protective-structures/michel_dynas.pdf/view
https://www.dynalook.com/@@site-logo/DYNAlook-Logo480x80.png
Modelling of laser impact on typical composites aeronautical structures for bonding quality assessment
Massively used in aeronautical structures, composites are nowadays essential in the search for a more ecological and successful industry. Their low density enables weight reduction and then decreases airplanes consumption. However, the current composites assembly process represents a limitation in their use. In fact, we do not have any reliable, industrialized and non-destructive technology to control the adhesive quality. Then composites are also riveted which adds weight and a drilling process during which fibres can be locally damaged. For about 10 years, the LASAT (LAser Shock Adhesion Test) technology appears to be a promising alternative as a non-destructive control mean to asses bonding quality. The laser impact creates a plasma that induces shock waves propagation in the structure. The LASAT technology can also be used to generate damage anywhere in the assembly thickness. The experimental technology is mature but is lacking a numerical tool in order to calibrate the input laser parameters depending on the targeted results.