This thesis aims to develop a new type of highly stretchable strain sensor to measure large deformation of a specimen subjected to dynamic loading. The sensor was based on the piezo-resistive response of carbon nanotube(CNT)/polydimethysiloxane (PDMS) composites thin films, some nickel particles were added into the sensor composite to improve the sensor performance. The piezo-resistive response of CNT composite gives high frequency response in strain measurement, while the ultra-soft PDMS matrix provides high flexibility and ductility for large strain measuring large strain (up to 26%) with an excellent linearity and a fast frequency response under quasi-static test, the delay time for high strain rate test is just 30 μs. This stretchable strain sensor is also able to exhibit much higher sensitivities, with a gauge factor of as high as 80, than conventional foil strain gauges.
| Identifer | oai:union.ndltd.org:unt.edu/info:ark/67531/metadc849674 |
| Date | 05 1900 |
| Creators | Yao, Shulong |
| Contributors | Yu, Xun (Mechanical engineer), Shi, Sheldon, Li, Xiaohua |
| Publisher | University of North Texas |
| Source Sets | University of North Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis or Dissertation |
| Format | vi, 33 pages : illustrations, Text |
| Rights | Public, Yao, Shulong, Copyright, Copyright is held by the author, unless otherwise noted. All rights Reserved. |
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