Viscoelastic Effects On A Polyetherimide Cylinder With Constant Radial Deformation

Author

Louis Edward Parkman

Graduation Semester and Year

2015

Language

English

Document Type

Thesis

Degree Name

Master of Science in Aerospace Engineering

Department

Mechanical and Aerospace Engineering

First Advisor

Ashfaq Adnan

Abstract

The relaxation of an axisymmetric radially crimped joint is analyzed with the inner component being formed from the engineering grade polymer ULTEM^TM 1000 polyetherimide. Creep and Relaxation tests were performed at several temperatures in order to use Time Temperature Superposition theory to assemble a master curve for predictions at long times based on short time testing. The master curves for each test were fit to the appropriate Prony Series and all coefficients are tabulated for re-use. The elastic theory for the classic thick walled cylinder was reviewed and the conversion from elasticity to viscoelasticity was demonstrated. Strength predictions are shown and compared to their elastic counterparts. Finally, a non-dimensionalized model of strength over time is presented.

Disciplines

Aerospace Engineering | Engineering | Mechanical Engineering

License

This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.

Comments

Degree granted by The University of Texas at Arlington

Recommended Citation

Parkman, Louis Edward, "Viscoelastic Effects On A Polyetherimide Cylinder With Constant Radial Deformation" (2015). Mechanical and Aerospace Engineering Theses. 348.
https://mavmatrix.uta.edu/mechaerospace_theses/348