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Wednesday, April 26 • 12:30pm - 2:00pm
The Effects of Dispersion on the Speed of Sound within a Corrugated Tube

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This work studies how the speed of sound in a corrugated tube decreases relative to the speed in free space. Previous students at the University of North Carolina Asheville have engaged in research to determine this speed. The results from these studies were obtained with an uncertainty that rendered the changes of speed within the tube undeterminable due to low sampling rate. This study seeks to refine previous research by measuring possible variations in the speed along the tube’s length.  To accomplish this, a higher sampling rate and noise reduction procedures will be used to lower uncertainty, thereby allowing the accuracy necessary to map the change of the speed of sound as it travels through the tube. This will be done by using a ‘one-shot’ method in which frequency controlled bursts of sound are received by a decreasingly distant sound sensor. Additional analysis will be done to investigate the effects of dispersion. This will be done by analyzing pulses of different frequencies as well as doing some frequency spectrum analysis.

Wednesday April 26, 2017 12:30pm - 2:00pm PDT
Concourse - Wilma Sherrill Center

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