Piezoresistive Characteristics of Nanocarbon Composite Strain Sensor by Its Longitudinal Pattern Design
Source abstract
Abstract
For an engineering feasibility study, we studied a simple design to improve NCSS (nanocarbon composite strain sensor) sensitivity by using its geometric pattern at a macro scale. We fabricated bulk- and grid-type sensors with different filler content weights (wt.%) and different sensor lengths and investigated their sensitivity characteristics. We also proposed a unit gauge factor model of NCSS to find a correlation between sensor length and its sensitivity. NCSS sensitivity was improved proportional to its length incremental ratio and we were able to achieve better linear and consistent data from the grid type than the bulk type one. We conclude that the longer sensor length results in a larger change of resistance due to its piezoresistive unit summation and that sensor geometric pattern design is one of the important issues for axial load and deformation measurement.
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Research context
OpenAlex topics: Mechanical and Optical Resonators · Advanced MEMS and NEMS Technologies · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Mechanical and Design Engineering, Pukyong National University, Busan 48513, Korea
Mechanical Components and Materials R&D Group, Korea Institute of Industrial Technology (KITECH), Daegu 42994, Korea
Innovative Smart Manufacturing R&D Department, Korea Institute of Industrial Technology (KITECH), Cheonan 31056, Korea
Department of Mechanical Engineering, Pusan National University, Busan 46241, Korea
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