Piezoresistive Response of Carbon Nanotube Yarn Monofilament Composites under Axial Compression
The hierarchical structure and microscale dimensions of carbon nanotube yarns (CNTYs) make them great candidates for the development of integrated sensing applications. The change in the electrical resistance of CNTYs due to mechanical strain, known as piezoresistivity, is the principal mechanism in...
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MDPI AG
2023-09-01
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| Online Access: | https://www.mdpi.com/2311-5629/9/4/89 |
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| author | Iriana Garcia Guerra Tannaz Tayyarian Omar Rodríguez-Uicab Jandro L. Abot |
| author_facet | Iriana Garcia Guerra Tannaz Tayyarian Omar Rodríguez-Uicab Jandro L. Abot |
| author_sort | Iriana Garcia Guerra |
| collection | DOAJ |
| description | The hierarchical structure and microscale dimensions of carbon nanotube yarns (CNTYs) make them great candidates for the development of integrated sensing applications. The change in the electrical resistance of CNTYs due to mechanical strain, known as piezoresistivity, is the principal mechanism in strain sensing using CNTYs. While the axial tensile properties of CNTYs have been studied widely, studies on the axial piezoresistive response of CNTYS under compression have been limited due to the complexities associated with the nature of the experiments involving subjecting a slender fiber to compression loading in its axial direction. In this study, the piezoresistive response of a single CNTY embedded into a polymeric resin (CNTY monofilament composite) was investigated under axial compression. The results suggest that the CNTY exhibits a strong piezoresistive response in the axial direction with sensitivity or gauge factor values in the order of 0.4–0.5 for CNTY monofilament composites. The piezoresistive response of the CNTY monofilament composites under compression was compared to that under tension and it was observed that the sensitivity appears to be slightly lower under compression. The potential change in sensitivity between the freestanding CNTY and the CNTY monofilament composite under compression is still unknown. Knowing the axial piezoresistive response of the CNTYs under both tension and compression will enable their use in sensing applications where the yarn undergoes compression including those in aerospace and marine structures, and civil or energy infrastructure. |
| first_indexed | 2024-03-08T20:54:34Z |
| format | Article |
| id | doaj.art-42745bcb87c542acb0ac2d3a6e7acf81 |
| institution | Directory Open Access Journal |
| issn | 2311-5629 |
| language | English |
| last_indexed | 2024-03-08T20:54:34Z |
| publishDate | 2023-09-01 |
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| spelling | doaj.art-42745bcb87c542acb0ac2d3a6e7acf812023-12-22T13:59:13ZengMDPI AGC2311-56292023-09-01948910.3390/c9040089Piezoresistive Response of Carbon Nanotube Yarn Monofilament Composites under Axial CompressionIriana Garcia Guerra0Tannaz Tayyarian1Omar Rodríguez-Uicab2Jandro L. Abot3Department of Mechanical Engineering, The Catholic University of America, Washington, DC 20064, USADepartment of Mechanical Engineering, The Catholic University of America, Washington, DC 20064, USADepartment of Mechanical Engineering, The Catholic University of America, Washington, DC 20064, USADepartment of Mechanical Engineering, The Catholic University of America, Washington, DC 20064, USAThe hierarchical structure and microscale dimensions of carbon nanotube yarns (CNTYs) make them great candidates for the development of integrated sensing applications. The change in the electrical resistance of CNTYs due to mechanical strain, known as piezoresistivity, is the principal mechanism in strain sensing using CNTYs. While the axial tensile properties of CNTYs have been studied widely, studies on the axial piezoresistive response of CNTYS under compression have been limited due to the complexities associated with the nature of the experiments involving subjecting a slender fiber to compression loading in its axial direction. In this study, the piezoresistive response of a single CNTY embedded into a polymeric resin (CNTY monofilament composite) was investigated under axial compression. The results suggest that the CNTY exhibits a strong piezoresistive response in the axial direction with sensitivity or gauge factor values in the order of 0.4–0.5 for CNTY monofilament composites. The piezoresistive response of the CNTY monofilament composites under compression was compared to that under tension and it was observed that the sensitivity appears to be slightly lower under compression. The potential change in sensitivity between the freestanding CNTY and the CNTY monofilament composite under compression is still unknown. Knowing the axial piezoresistive response of the CNTYs under both tension and compression will enable their use in sensing applications where the yarn undergoes compression including those in aerospace and marine structures, and civil or energy infrastructure.https://www.mdpi.com/2311-5629/9/4/89carbon nanotube yarnpiezoresistive responseaxial compressionmonofilament compositestension-compression |
| spellingShingle | Iriana Garcia Guerra Tannaz Tayyarian Omar Rodríguez-Uicab Jandro L. Abot Piezoresistive Response of Carbon Nanotube Yarn Monofilament Composites under Axial Compression C carbon nanotube yarn piezoresistive response axial compression monofilament composites tension-compression |
| title | Piezoresistive Response of Carbon Nanotube Yarn Monofilament Composites under Axial Compression |
| title_full | Piezoresistive Response of Carbon Nanotube Yarn Monofilament Composites under Axial Compression |
| title_fullStr | Piezoresistive Response of Carbon Nanotube Yarn Monofilament Composites under Axial Compression |
| title_full_unstemmed | Piezoresistive Response of Carbon Nanotube Yarn Monofilament Composites under Axial Compression |
| title_short | Piezoresistive Response of Carbon Nanotube Yarn Monofilament Composites under Axial Compression |
| title_sort | piezoresistive response of carbon nanotube yarn monofilament composites under axial compression |
| topic | carbon nanotube yarn piezoresistive response axial compression monofilament composites tension-compression |
| url | https://www.mdpi.com/2311-5629/9/4/89 |
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