The recent progress in laser system technology enables innovative techniques for machining of CFRPs. A representative application is the layer by layer removal of damaged composite material to provide a cavity for refilling with repair plies. Results show that it is possible to achieve a reliable and automatable removal rate to perform arbitrary repair cavity geometries, obtaining a relevant time-reduction respect to the conventional manual grinding process. The combination of modern UV-laser sources with a scanning technology enabling deflection speeds up to 4,0m/s, suppresses heat affected zones (HAZ) and detachment of fibers from the polymer matrix. Finally, according to DIN 65148, the interlaminar shear strength of repaired laminates and reference specimens were measured and evaluated.
Chapter 12: Laser-based repair for carbon fiber reinforced composites.
ROMOLI, LUCA;
2012-01-01
Abstract
The recent progress in laser system technology enables innovative techniques for machining of CFRPs. A representative application is the layer by layer removal of damaged composite material to provide a cavity for refilling with repair plies. Results show that it is possible to achieve a reliable and automatable removal rate to perform arbitrary repair cavity geometries, obtaining a relevant time-reduction respect to the conventional manual grinding process. The combination of modern UV-laser sources with a scanning technology enabling deflection speeds up to 4,0m/s, suppresses heat affected zones (HAZ) and detachment of fibers from the polymer matrix. Finally, according to DIN 65148, the interlaminar shear strength of repaired laminates and reference specimens were measured and evaluated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
