This semester our research focus has been to analyze the speed of sound through 3D printed corrugated and non corrugated tubes. With the help of some colleagues from the engineering department we have been able to obtain results from two different 3D printed tubes. This process involved finding the speed of sound in different tubes. To determine this we found at what frequencies there was evidence of resonance. This process was complicated by the observation that the resonant frequencies are not only dependent on the tube length, but also on the tube material and finish (painted, as printed, or heat treated). In contemplating the value of this research it can be seen that the ability to design and create corrugations of different parameters will help us more easily understand the relationship between acoustic properties (like speed of sound) and physical properties (like size and frequency of corrugations). The results will be helpful in understanding how fluids flow in tubes with periodic boundary conditions such as oil pipelines and heart stents.
