Picosecond pulse laser processing of carbon fiber reinforced resin

Kosuge, Atsushi  

Carbon fiber reinforced plastic is a resin-based composite material reinforced with carbon fiber, which is a high-performance fiber having features such as light weight, high strength, and high rigidity. CFRTP using a thermoplastic resin has a short molding time and is excellent in economy, and the thermoplastic resin melts when heat is applied, so that it can be recycled. On the other hand, CFRP and CFRTP are known as difficult-to-process materials that are difficult to process, and in laser processing, a heat-affected region is generated in which the resin evaporates and carbon fibers are exposed when irradiated with a laser. Since there is a concern that this heat-affected zone will reduce the strength of CFRP and CFRTP, it has become an important issue in recent years to find processing conditions that keep this heat-affected zone small. Search for conditions.