Fracture toughness in SPCC/CFRP hybrid laminates: Mode I and mode II perspectives
Penulis/Author
Ariyana Dwiputra Nugraha (1); M LUTHFI HAKIM (2); Farid Triawan (4); Murni Handayani (5); Yosephin Dewiani Rahmayanti (6); Ir. Muhammad Akhsin Muflikhun, S.T., MSME., Ph.D (7)
Tanggal/Date
2024
Kata Kunci/Keyword
Abstrak/Abstract
Hybrid composites using adhesive joints are gaining popularity in various industries as their various material
combinations can create certain advantages. This research focuses on examining the mode I and mode II fracture
toughness characteristics of the combined laminate between Steel Plate Cold Rolled Commercial (SPCC) metal
and Carbon Fiber Reinforced Polymer (CFRP) composite processed using adhesive bonding. SPCC/CFRP hybrid
laminate composites were manufactured with a variety of manufacturing options (A, B, and C) to find the most
optimal method using two types of epoxy and cyanoacrylate adhesives, with two different bonding processes:
secondary bonding and co-bonding. Fracture toughness values were measured through the Double Cantilever
Beam (DCB) test for mode I and the End Notched Flexure (ENF) test for mode II. The test results showed that
epoxy adhesives in the SPCC/CFRP adhesive joints provided better fracture toughness performance, especially
when combined with the co-bonding technique. Specimens from manufacturing option C showed the highest G
and G
2
IIC
values of 83.05 and 254.94 J/m
,
IC
respectively. These values increased by 58.98 % and 80.48 %
compared to manufacturing options A and B in Mode I. Additionally, the G
IIC
value for manufacturing option C
increased by 78.00 % and 66.76 % compared to manufacturing options A and B. The SPCC/CFRP hybrid lam
inates showed adhesive failure on the SPCC surface when using epoxy adhesive, whereas adhesive failure
occurred on the CFRP surface with cyanoacrylate adhesive for the different manufacturing options.
