Abstract
The objective of this work is to investigate the crack growth properties of a natural rubber vulcanizate. This work utilizes a modified double cantilever beam (DCB) for measuring the crack propagation in natural rubber. Results of the crack growth in the plane strain dominated DCB are presented and compared to results from plane stress single edge notch test specimens. It is found that the crack growth rate in natural rubber under plane strain conditions is one hundred times faster than under plane stress. The failure surface of the DCB is examined for cavitation occurring within the rubber due to high hydrostatic pressure. No evidence of cavitation was found.
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