Date of Award

2010

Document Type

Campus Access Thesis

Department

Mechanical Engineering

First Advisor

Kenneth L. Reifsnider

Abstract

Cracks were observed in field tested tire inner liners. When two versions of the material were studied with specialized Adkins Creep Fixtures, it was found that cracks developed parallel to the loading direction in samples tested at cold temperatures (-40 C in this study). Also, an experimental Arcan fixture was used in conjunction with digital image correlation to learn the full-field strain state of the inner liner material under simulated loading conditions. It was found that the effective strain directions correspond to those of observed cracks in field testing, and that local thickness variations, defects (like voids), surface geometry and anisotropy may be exaggerating the effects of applied loads.

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