The primary function of this research project has been to investigate the physical
properties of the lower jaw of the Atlantic Bottlenose Dolphin (Tursiops truneatus).
This has been achieved through numerical modelling techniques, established
physical measurements and modem Laser Doppler Velocity Measurements.
During the course of this work some interesting characteristics of the dolphin jaw structure
have been discovered. Sound speeds and attenuation levels of the jawbone have
been determined and the implications assessed. The geometric array formed by the
dolphin teeth of the lower jaw can be used to form an end-fire array which produces a
beam pattern similar to those of the dolphin. The geometric array has also been analysed
for its passive acoustical properties, in particular its ability to form acoustic stop
bands within the audible range of the dolphin.
The results of this research show that the directivity of the dolphin can be reproduced
using the morphological features of the lower jaw.
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy of Loughborough University