ROTATIONAL RESONANCE VIBROMETRY ON CERAMIC COMPONENTS

摘要

Our results confirm that high resolution acoustic spectroscopy of objects with rotational symmetry can be performed in such a way that one observes the lifted degeneracy thereby revealing the presence of anisotropy caused by defects (e.g. cracks, void, texture of material). This is a powerful method to characterize the quality of safety-relevant ceramic components. The primary results obtained from such measurements are the frequency split and the damping. Though these data can serve as monitors for a constant production quality, the final goal is to characterize the kind of defects from such data.