2-D Visualizations of the Frequency Contents of Lamb Waves in a Bovine Cortical Tibia

This study observes the frequency contents of Lamb waves propagating in a bone and represents them in 2-d graphics. A non-contact Lamb wave measurement technique, scanning laser vibrometry, is proposed to examine a bovine cortical tibia in vitro. The Lamb waves works at the center frequency of 84KHz. Only the fundamental modes, a(0) and s(0), were expected to occur. Defining the propagating Lamb wave modes is further performed using wavelet transform analysis