Document Type
Thesis
College
College of Engineering
Department
Mechanical Engineering
Degree
MSE in Mechanical Engineering
Date Completed
2018
First Committee Member
Santamaria, Anthony
Second Committee Member
Shin, Moochul
Third Committee Member
Zhao, Jingzhou
Additional Committee Member(s)
Cheraghi, Hossein
Abstract
"The work on this project has covered many topics. It started off by showing that embedded SMA wires could potentially be used as artificial muscles, specifically by demonstrating the full range of motion of the human eyelid. The embedded wires’ contraction rates could be controlled with an electrical circuit. However, the slow response time of the wire/silicone system was noted, as well as a lack of knowledge of the material properties of the system. For the next phase of this work, a step back was taken to reexamine at the manufacturing method of these samples and to collect data on the material properties of the nitinol wire, the silicones, and the bond strength between the two of them. The manufacturing method was optimized so that reliable samples could be created, and the material properties could be accurately measured by using an Instron and performing a bond-slip pull test. Next, a finite element analysis model was created using Abaqus, to accurately show the behavior of the wire/silicone material as it underwent the bond-slip test. The material properties that were gathered from experimental testing were used for this analysis, and the difference between experimental displacement and FEA displacement were less than 2%, thus verifying the simulation. Finally, molds were designed so that the SMA could be woven in the polymer. The wire was then heated to contract, like the original eyelid design, and the movement of the material could be iii observed. This new shape was then modeled in Abaqus and the distance in the peak deflection between the experimental and the FEA was less than 3%."
Recommended Citation
Mazza, Paul C., "Design and analysis of nitinol-embedded silicone membranes for artificial skin" (2018). Master’s Theses - College of Engineering. 11.
https://digitalcommons.law.wne.edu/coetheses/11