Fabrication and Experimental Characterization of a 3D-printed, Anisotropic Strain Sensor

In this work the potential improvement of low strain sensitivity by using a voltage-based readout modality, utilizing the anisotropic condition of strain sensors fabricated using FFF 3D printing was investigated. The effects of printing parameters and conditions were explored as they have a direct influence on the anisotropic properties of such structures and can be tuned/optimized depending on the application.

In addition, an analytical mathematical model was introduced for generating theoretical data and modeling. The manufacturing process was documented in a step-by-step overview along with recommendations for avoiding the pitfalls encountered during the work. Fabricated samples were subjected to strain testing and their response was analyzed to determine the difference between voltage and resistance-based sensor readouts.