Effect of re-depositions and fiber exposure on the adhesive bond strength of CFRP after UV excimer laser treatment

Abstract Adhesive bonding of CFRP is one major approach to join this class compound materials with other components, e.g., metals. The necessity clean parts after fabrication and generate a bond-ready interface without damaging the implemented fibers demands gentle highly reproducible surface treatment. Lasers operating in UV region are promising technique for that topic. Yet, factors influencing adhesion properties laser-treated not sufficiently understood. present paper describes influence nanosecond-pulsed laser parameters on treatment effects context adhesive properties. A special focus was given distribution avoidance re-deposition by parameter selection. Furthermore, effect laser-induced fiber exposure analyzed. Re-deposition were complementarily discussed chemical analyses composition bond strength studies under Mode I loading. It found both effects, i.e., treated overtreatment, result lower values compared an “optimized” exhibiting none descripted conditions.