This study investigated variables for improving adhesive strength using laser surface treatment when bonding dissimilar materials using adhesives. adhesive strength analysis was performed for CFRP and Al6061 by laser irradiation intensity, and surface roughness was measured to analyze the related results. In the case of CFRP, the adhesive strength was good when the surface was not treated. In the case of Al6061, the adhesive strength was 25 MPa when the surface was treated with 20W, the maximum output of the laser surface treatment equipment, and the adhesive strength was improved by 125% compared to the untreated specimen. In addition, by measuring the surface roughness in the experiment, it was confirmed that the higher the surface roughness, the better the adhesive strength.

• 정재훈 (한국탄소산업진흥원) | 정재훈
• 허몽영(한국탄소융합기술원) | Mong-young Huh
• 안진우(한국탄소산업진흥원) | Jin-woo Ahn
• 김성종(한국탄소산업진흥원) | Seong-Jong Kim Corresponding author