Enhancement of fracture toughness of hierarchical carbon fiber composites via improved adhesion between carbon nanotubes and carbon fibers
- Authors
- Kim, Hansang; Oh, Eugene; Hahn, H. Thomas; Lee, Kun-Hong
- Issue Date
- Apr-2015
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Carbon fiber; Hybrid; Nano-structures; Fracture toughness
- Citation
- COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, v.71, pp.72 - 83
- Journal Title
- COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
- Volume
- 71
- Start Page
- 72
- End Page
- 83
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/10642
- DOI
- 10.1016/j.compositesa.2014.12.014
- ISSN
- 1359-835X
- Abstract
- Hierarchical +1 composites consisting of carbon fibers with carbon nanotubes (CNTs) grown onto them and an epoxy matrix were processed, and the mode I fracture toughness of these composites was evaluated. The mode I fracture toughness of the initial batches of the hierarchical composites was lower than that of the baseline samples without CNTs. Hence, efforts to enhance the adhesion between carbon fibers and CNTs were made, resulting in enhanced adhesion. The enhanced adhesion was confirmed by Scotch tape tests and mode I fracture toughness tests followed by fractographic studies. The mode I fracture toughness of the hierarchical composites with enhanced adhesion was 51% and 89% higher than those of the baseline samples and hierarchical composites with poor adhesion, respectively. Moreover, fractographic studies of the fracture surfaces of the hierarchical composites with enhanced adhesion showed that CNTs were still attached to carbon fibers even after the mechanical tests. (C) 2015 Elsevier Ltd. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공과대학 > 기계공학과 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.