Manufacturing of Highly Sensitive Piezoresistive Two-Substances Auxetic Strain Sensor Using Composite Approach 


Vol. 24,  No. 5, pp. 1789-1798, May  2023
10.1007/s12221-023-00179-8


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  Abstract

Selection of the appropriate methodology for manufacturing piezoresistive auxetic sensor is as important as choosing the sensor constitutive materials. In this work, a new composite approach was proposed to design and fabrication of the piezoresistive re-entrant auxetic sensor. Inside the sensor mold, a series of connected ridges were designed, and the RTV2 silicone-molded auxetic structure has the corresponded grooves. Then, the structure grooves were filled with graphite powders as a sensing element. This method has some advantages in comparison with previous methods including; (a) Unlike the coating method, the sensing elements do not separate from the surface after a while. (b) Unlike the mixing method, the elastic modulus of the structure does not increase. (c) Unlike the layered sandwich composite method, there is no problem of exact matching of the layers. Sensing performances were examined for different strains, and the results showed that the presented sensor improved sensing performance in comparison with layered composite re-entrant auxetic and mix re-entrant auxetic sensors by 48% and 430%, respectively.

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  Cite this article

[IEEE Style]

B. Taherkhani, "Manufacturing of Highly Sensitive Piezoresistive Two-Substances Auxetic Strain Sensor Using Composite Approach," Fibers and Polymers, vol. 24, no. 5, pp. 1789-1798, 2023. DOI: 10.1007/s12221-023-00179-8.

[ACM Style]

Bahman Taherkhani. 2023. Manufacturing of Highly Sensitive Piezoresistive Two-Substances Auxetic Strain Sensor Using Composite Approach. Fibers and Polymers, 24, 5, (2023), 1789-1798. DOI: 10.1007/s12221-023-00179-8.

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