Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1500022 | Scripta Materialia | 2012 | 4 Pages |
Abstract
An analytical method was used to investigate the effects of thermal residual stresses on the fracture toughness of multiwalled carbon nanotube (MWCNT)/alumina nanocomposites. Computed results showed that thermal residual stresses contribute negligibly to the overall improved toughness due to immovable dislocations around MWCNTs not included, these immovable dislocations, induced by highly hydrostatic compressive stress upon MWCNTs, usually act as nanocrack nuclei and relieve stress concentration ahead of the main crack, which is evidenced by the existence of nanosteps on the fracture surface.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yao Chen, Kantesh Balani, Arvind Agarwal,