Tension-tension fatigue behavior of carbon nanotube wires

No Thumbnail Available
Authors
Misak, Heath Edward
Asmatulu, Ramazan
Sabelkin, V.
Mall, Shankar
Kladitis, P.E.
Issue Date
2012-09-23
Type
Article
Language
en_US
Keywords
Research Projects
Organizational Units
Journal Issue
Alternative Title
Abstract

The tension-tension fatigue behavior of three types of as-received carbon nanotube (CNT) wires, comprising of 30-yarn, 60-yarn, and 100-yarn, was investigated. Fatigue tests were conducted at 35, 50, 60, 75 and 80% of their ultimate tensile strengths which provided the fatigue life data (S-N curves). Their electrical conductivities were measured as a function of the number of cycles. Fatigue strength of the CNT wires at a given number of cycles decreased with an increase in the number of yarns. Their electrical conductivity increased with increase of applied fatigue load and number of fatigue cycles. Damage and failure mechanisms involved relative sliding of yarns in CNT wires leading to the formation of kink bands, followed by plastic deformation and then breakage of yarns. Microtomography density measurements provided the evidence that the increase in conductivity was due to the reduction of micro/nano voids between and inside the yarns, which decreased with increasing fatigue load and number of fatigue cycles.

Description
Click on the DOI link to access the article (may not be free).
Citation
Heath Edward Misak, Ramazan Asmatulu, V. Sabelkin, S. Mall, P.E. Kladitis, Tension-tension fatigue behavior of carbon nanotube wires, Carbon, Available online 23 September 2012, ISSN 0008-6223, 10.1016/j.carbon.2012.09.024.
Publisher
Elsevier
License
Journal
Volume
Issue
PubMed ID
DOI
ISSN
6223
EISSN