Highly Stretchable Miniature Strain Sensor for Large Dynamic Strain Measurement

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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 ... continued below

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Yao, Shulong May 2016.

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  • Yao, Shulong

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Description

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.

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  • May 2016

Added to The UNT Digital Library

  • June 28, 2016, 4:28 p.m.

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  • July 25, 2016, 12:42 p.m.

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Yao, Shulong. Highly Stretchable Miniature Strain Sensor for Large Dynamic Strain Measurement, thesis, May 2016; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc849674/: accessed September 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .