Two experiments for measuring specific viscoelastic cohesive zone parameters
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A micromechanical model for a viscoelastic cohesive zone has been previously formulated and based on a continuum mechanics model of the damage zone ahead of the crack tip in a polymer solid. The scale of the cohesive zone model is quite small, thus rendering it difficult to obtain the cohesive zone parameters experimentally. Presented herein is an experimental procedure for measuring the crack tip opening, damage zone profile ahead of the crack tip, crack tip opening rate, critical fibril breaking length and fibril diameter, all as a function of location and time. It is then shown that these parameters can be used to completely characterize a viscoelastic cohesive zone model.
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Includes bibliographical references (leaves 100-101).
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Williams, Justin Joel (2002). Two experiments for measuring specific viscoelastic cohesive zone parameters. Master's thesis, Texas A&M University. Available electronically from