Date of Award

Spring 5-5-2023

Degree Type


Degree Name

Master of Science in Natural Science


College of Science and Mathematics

First Advisor

Hector Ochoa, PhD

Second Advisor

Christopher Aul, PhD

Third Advisor

Dan Bruton, PhD

Fourth Advisor

Odutayo Odunuga, PhD


This thesis aimed to fabricate and test twisted coiled polymer actuators (TCPA) to understand the mechanical and thermal aspects of this artificial muscle fiber. The purpose of this thesis was to find a linear relationship using the LVDT sensor, fabricating TCPA fibers, and interpreting the data. The project tested whether nylon/polymer could be used as a better artificial muscle fiber.

This research accomplished three goals: (1) designing and fabricating a system capable of creating supercoiled muscle fibers consistently, (2) calibrating the Linear Variable Differential Transformer (LVDT) and Core, and (3) analyzing/interpreting the data of the Twisted Coiled Polymer Actuators (TCPA) fibers through the sensors. The proposed methods could be used to control the monofilament's twisting and tension through the four steps, measuring, coiling, annealing, and testing the TCPA fibers.

This thesis has built a foundation that can be used to fabricate TCPA fibers from nylon and evaluate their mechanical and thermal behavior while being measured within the LVDT sensor. The results provided a better understanding of the mechanical behavior of the TCPA fibers and provided the foundations to optimize a final building block to understanding this artificial muscle fiber.


Our research aims to fabricate the Twisted Coiled Polymer (TCP) actuators with nylon, calibrating the LVDT and Core sensor and deriving the data from the sensors. Finding a mathematical equation through statistical software (JMP) that predicts the muscle fiber's behavior will be the overall goal but not this research's goal. Fabricating the Twisted Coiled Polymer (TCP) actuators is mentioned thoroughly in the methodology, but these steps include four stages. The measurement, coiling, annealing, and testing stage aided our research by completing the first goal of this research, which is the fabrication of TCPAs. The next step is calibrating the Linear Differential Variable Transformer (LVDT) to acquire accurate linear measurements. Finally, after the calibration stage is the testing phase of each TCP actuator

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.



Tell us how this article helped you.


To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.