TY - JOUR
T1 - Constructing continuous epoxy interlocking teeth on magnesium alloy surface using laser engraving and resin pre-coating for stronger adhesive bonding joints
AU - Huang, Wenyi
AU - Cheng, Fei
AU - Zhang, Jinheng
AU - Zuo, Shihao
AU - Cui, Xuejun
AU - Yang, Guangming
AU - He, Jiaxin
AU - Ashfaq, Sidra
AU - Hu, Xiaozhi
N1 - Publisher Copyright:
© 2025 Elsevier Ltd
PY - 2025/4/16
Y1 - 2025/4/16
N2 - This study focused on optimizing the adhesive interfaces between Magnesium Alloy (MA) and Carbon Fiber-Reinforced Polymer (CFRP) composites using laser engraving treatment and Resin Pre-Coating (RPC). This synergistic approach improved the bonding conditions and constructed continuous epoxy interlocking teeth by introducing vertical gaps between annular array units. The MA-CFRP composite exhibited a noticeable 126.1 % improvement in its bonding strength following laser engraving of solid circles (0.16 mm in diameter) and RPC treatment. Moreover, the initial debonding failure of the MA surface shifted into cohesive failure of epoxy adhesive and CFRP panel delamination failure. The combination of the two techniques presents a novel and effective strategy to enhance the bond strength of MA-CFRP joints, exhibiting for industrial manufacturing of high-performance MA-CFRP composites.
AB - This study focused on optimizing the adhesive interfaces between Magnesium Alloy (MA) and Carbon Fiber-Reinforced Polymer (CFRP) composites using laser engraving treatment and Resin Pre-Coating (RPC). This synergistic approach improved the bonding conditions and constructed continuous epoxy interlocking teeth by introducing vertical gaps between annular array units. The MA-CFRP composite exhibited a noticeable 126.1 % improvement in its bonding strength following laser engraving of solid circles (0.16 mm in diameter) and RPC treatment. Moreover, the initial debonding failure of the MA surface shifted into cohesive failure of epoxy adhesive and CFRP panel delamination failure. The combination of the two techniques presents a novel and effective strategy to enhance the bond strength of MA-CFRP joints, exhibiting for industrial manufacturing of high-performance MA-CFRP composites.
KW - Adhesive bonding
KW - Epoxy interlocking teeth (EIT)
KW - High-strength adhesive joint
KW - Laser engraving treatment (LET)
KW - Resin pre-coating (RPC)
UR - http://www.scopus.com/inward/record.url?scp=105002577205&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2025.119189
DO - 10.1016/j.compstruct.2025.119189
M3 - Article
AN - SCOPUS:105002577205
SN - 0263-8223
VL - 365
SP - 1
EP - 14
JO - Composite Structures
JF - Composite Structures
M1 - 119189
ER -