Date of Award
Spring 1992
Document Type
Thesis - Restricted
Degree Name
Master of Science (MS)
Department
Mechanical Engineering
First Advisor
Stango, Robert J.
Second Advisor
Weber, Robert C.
Third Advisor
Nigro, Nicholas J.
Abstract
At present, the role which the extrusion process plays in the anisotropic material response of polycarbonate is not well understood. Due to an apparent absence of property data, design engineers are unable to account for variations of the modulus of elasticity and ultimate tensile strength, for example, which may arise due to the extrusion process. Furthermore, the affect of thermal/mechanical loading on material properties of sheet extruded polycarbonate is not known. Therefore, the elevated temperature application of polycarbonate load-bearing components can result in polymer parts with uncertain reliability, performance, and life. Stress versus strain curves for polymers at different temperatures are readily found for most polymers. However, these curves exist only for a few polymers that have been subjected to thermal/mechanical loading for a given time, and does not exist for polycarbonate. The only reference to the effect of loading and temperature exists in published creep data. This isn't the same as the conditioned materials explored in this paper.
Recommended Citation
Sieth, Kenneth J., "Effect of Environmental Conditioning on the Anisotropic Response of Sheet-Extruded Polycarbonate" (1992). Master's Theses (1922-2009) Access restricted to Marquette Campus. 4179.
https://epublications.marquette.edu/theses/4179