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Micro-scale mechanical testing of non-woven carbon nanotube sheets and yarns
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Cao, J. Jones, J. S. Morestin, F. Magargee, J. |
| Copyright Year | 2013 |
| Description | Non-woven carbon nanotube (CNT) sheets and yarns were tested using a novel micro-scale mechanical testing system. CNT sheets were observed to delaminate during uniaxial testing using an adbesive gripping method, resulting from a higher proportion of load bearing in the outer sheets versus internal sheets and an apparently low interlaminar shear strength. In response to this, a new spool-grip method was used to alleviate non-uniform through-thickness stresses, circumvent premature delamination, and allow the sheet material to sustain a 72% increase in measured tensile strength. Furthermore, tension tests of CNT yarns showed that the yarn-structure was approximaiely 7 times stronger than the sheet structure, owing to a higher degree of CNT alignment in the test direction. |
| File Size | 2358792 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20130011063 |
| Archival Resource Key | ark:/13960/t9n34v93j |
| Language | English |
| Publisher Date | 2013-01-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Micromechanics Deformation Interlaminar Stress Delaminating Shear Strength Carbon Nanotubes Laminates Yarns Nonuniformity Tensile Strength Stress Measurement Sheets Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
