Abstract
A new method to evaluate the relationship between stress intensity factor K I and crack growth rate V of ceramics which is based on the Double-Torsion (DT) technique was proposed. Plate-type DT specimens of soda-lime glass, glass ceramics, and alumina ceramics were prepared. The constant loading rate crack propagation test was carried out. Furthermore, a crack growth behavior was monitored using a compliance method. As the results, it was found that the proposed method would be available for the rapid and accurate evaluation of K I − V diagram on ceramics since the method is based on a simple measurement system.
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