Characterizing the mechanical properties of rapid liquid printed silicone for use in prosthetic liners
Name
1221003340-MIT.pdf
Size
1.89 MB
Format
Adobe PDF
Checksum (MD5)
89367f271d2e1b48d8d5606f7783914e
Author(s)
Phillips, Elaine,S.B.(Elaine M.)Massachusetts Institute of Technology.
Advisor(s)
Hugh Herr.
Date Issued
2019
Publisher
Massachusetts Institute of Technology
Abstract
Prosthetic socket liners have previously been commercially available only in set size increments. The Self Assembly Lab's new Rapid Liquid 3D printing will allow custom-fit flexible socket liners to be printed with medical-grade silicone, however the material characteristics of the silicone in this deposition pattern are not well understood. Under loaded conditions in a prosthetic socket, this uncertainty leads to suboptimal performance and comfort. The goal of this thesis project is to characterize the 3D printed soft silicone, which can then be used to 3D print custom-fit silicone socket liners that generate a custom pressure map on each residual limb. Samples of hyperelastic silicone were gathered from representative liners, their stress stretch curves were measured, and various hyperelastic models were fit to the data. The Ogden model was determined to yield the best fit for each specimen. These hyperelastic model parameters can be used to enable more accurate modeling and design of custom socket liners.
Description
Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, May, 2019
Cataloged from PDF of thesis. "The Table of Contents does not accurately represent the page numbering"--Disclaimer page.
Includes bibliographical references (page 14).
Subjects
Mechanical Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
MIT theses may be protected by copyright. Please reuse MIT thesis content according to the MIT Libraries Permissions Policy, which is available through the URL provided.
Persistent DSpace Link
