Investigation on surface treatments of CFRP and aluminum to improve fracture toughness of adhesively-bonded CFRP-aluminum joints
- Title
- Investigation on surface treatments of CFRP and aluminum to improve fracture toughness of adhesively-bonded CFRP-aluminum joints
- Author
- 최낙삼
- Keywords
- surface treatment; CFRP-aluminum joint; ion irradiation; plasma; CLS specimen; elastic work factor; fracture toughness
- Issue Date
- 2003-01
- Publisher
- VSP BV
- Citation
- JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, v. 17, No. 12, Page. 1619-1634
- Abstract
- In this study, the role of surface treatments of CFRP (graphite/epoxy composite) and aluminum (7075-T6) on the adhesively-bonded CFRP-aluminum joints has been investigated. The CFRP was surface-treated by Ar+ ion irradiation in an oxygen environment and the aluminum was surface-treated using a DC plasma. Ar+ ion irradiation treatment was carried out at Ar+ ion dose of 10(16) ions/cm(2). Plasma treatment was carried out at a volume ratio of acetylene gas to nitrogen gas of 5 : 5 and the treatment time was 30 s. The effect of surface treatments on the fracture behavior CFRP-aluminum joints was determined from fracture tests using three different CLS (cracked lap shear) specimens: (1) untreated CFRP/untreated aluminum, (2) ion-irradiated CFRP/untreated aluminum and (3) untreated CFRP/plasma-treated aluminum. Fracture behaviors (fracture load, fracture toughness, fracture surfaces) of these three different specimens were compared. The results showed that both fracture load and fracture toughness of CFRP-aluminum joints were in the following order: ion-irradiated CFRP/untreated aluminum specimen > untreated CFRP/plasma-treated aluminum specimen > untreated CFRP/untreated aluminum specimen. SEM examination of fracture surfaces showed that fracture occurred as an interfacial failure for untreated specimens. On the other hand, a cohesive failure in the adhesive was the primary fracture mode for specimens surface-treated by ion irradiation or plasma.
- URI
- https://www.tandfonline.com/doi/abs/10.1163/156856103322396703https://repository.hanyang.ac.kr/handle/20.500.11754/110120
- ISSN
- 0169-4243
- DOI
- 10.1163/156856103322396703
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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