Title page for ETD etd-10312009-020414
|Type of Document
||Elmore, Jennifer Susan
||Dynamic mechanical analysis of graphite/epoxy composites with varied interphases
||Master of Science
|Reifsnider, Kenneth L.
|Stinchcomb, Wayne W.
|Hajj, Muhammad R.
|Date of Defense
Dynamic mechanical analysis (DMA) has been used extensively to characterize
polymeric materials. This thesis investigates the use of this technique to characterize
composite materials. Four material systems, all having the same fiber and the same
matrix material, were systematically altered with different interphase regions. Initial
run data indicates that the variation in fiber sizings create different interphase regions
that are detectable by DMA. However, some post-cured specimens revealed that those
differences are reduced with further heat treatment. Fiber sizing variation also affects
the material response to thermal and mechanical cycling. Different fiber surface
treatments have little effect on the dynamic mechanical response of the materials. It is
shown that DMA is a test method that yields repeatable results and is capable of
detecting small changes in compsite constituents.
|| Approximate Download Time
| 28.8 Modem
|| 56K Modem
|| ISDN (64 Kb)
|| ISDN (128 Kb)
|| Higher-speed Access
next to an author's name indicates that all
files or directories associated with their ETD
are accessible from the Virginia Tech campus network only.
If you have questions or technical
problems, please Contact DLA.