Abstract
Honeycomb sandwich panels are highly anisotropic, layered media predicted to have unique dispersion characteristics for flexure wave frequencies above a few kilohertz. The phase velocity of flexural waves traveling along a l-in.-thick honeycomb sandwich panel has been experimentally determined from 170 Hz to 50 kHz using three techniques: measurement of resonant frequencies of beam-shaped samples in forced vibration, measurement of nodal spacing in standing-wave patterns on beam-shaped samples, and measurement of the change in time delay of a particular phase feature of a wave packet as a function of propagation distance in large plate samples. The data are in good agreement with two models, a plate theory and an elasticity theory, each of which treats the core as a continuum. Above SO kHz, the predictions of the two models diverge and the experimental phenomena become more complex. A brief description of these results is given.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
