Several polycrystalline ceramics were fractured at room temperature and the fracture-mirror radii were measured. The slopes of curves of fracture stress versus (mirror radius)−1/2 correlate directly with Young's modulus. Comparison of results from strength tests and delayed-fracture tests failed to reveal a loading-rate dependence of the above slopes. Implications of these observations are discussed and a more specific criterion for mirror-boundary formation is suggested.
No takes yet. Share an insight, caveat, or question.
Kirchner et al. (1976) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: