Research of a Plant-based Sound Insulating Material in Noise and Harshness
Primary Faculty Mentor’s Name
Dr. Valentin Soloiu
Proposal Track
Student
Session Format
Poster
Abstract
Noise is a problem that can be considered pollution in excessive amounts. This is even more so a problem when transportation via jet airliners, both commercial and military, is involved. Humans have a hearing range of 20 Hz to 20,000 Hz, and often noise from a jet turbine is extremely harsh on the human ears and can cause pain in extreme amounts.
To reduce the problem of harsh noise, an effort to build quieter and more efficient engines has been in play for the past few decades. However, there are noises that are created by aero turbines that cannot be avoided. To overcome this problem, noise insulating materials have been created and installed in varying situations, such as in aircraft applications for comfort. Because of the trend of environmentalism certain materials are created from plant based products, hence the focus of this research.
This research explores the harshness of sound created by an aero gas turbine, and it compares the sound damping capabilities of a soy based polyurethane sound insulating material. Sound data has been recorded and processed using a cutting-edge ¼” diffuse field microphone and Pulse software platform by Bruel & Kjaer. Thus far, a baseline of the aero gas turbine noise and harshness testing was achieved using Jet-A as the fuel of choice. The experiment will have the soy-based sound insulating material compared to the aforementioned baseline, and melamine, a common insulating material for aerospace due to its low density and low flammability. The areo gas turbine will run at speeds of 65,000 rpm, 70,000 rpm, and 75,000 rpm. However, 70,000 rpm is the focus for all sound insulating materials. The insulating material will be structured into a cube that will house the microphone, and the microphone is located at approximately one meter away from the source.
Keywords
Soy-Based Polyurethane, Sound Insulating Material, Aero Gas Turbine, Diffuse Field
Location
Concourse and Atrium
Presentation Year
2015
Start Date
11-7-2015 2:10 PM
End Date
11-7-2015 3:20 PM
Publication Type and Release Option
Presentation (Open Access)
Recommended Citation
Knowles, Aliyah R.; Simons, Emerald; and Soloiu, Valentin, "Research of a Plant-based Sound Insulating Material in Noise and Harshness" (2015). Georgia Undergraduate Research Conference (2014-2015). 37.
https://digitalcommons.georgiasouthern.edu/gurc/2015/2015/37
Research of a Plant-based Sound Insulating Material in Noise and Harshness
Concourse and Atrium
Noise is a problem that can be considered pollution in excessive amounts. This is even more so a problem when transportation via jet airliners, both commercial and military, is involved. Humans have a hearing range of 20 Hz to 20,000 Hz, and often noise from a jet turbine is extremely harsh on the human ears and can cause pain in extreme amounts.
To reduce the problem of harsh noise, an effort to build quieter and more efficient engines has been in play for the past few decades. However, there are noises that are created by aero turbines that cannot be avoided. To overcome this problem, noise insulating materials have been created and installed in varying situations, such as in aircraft applications for comfort. Because of the trend of environmentalism certain materials are created from plant based products, hence the focus of this research.
This research explores the harshness of sound created by an aero gas turbine, and it compares the sound damping capabilities of a soy based polyurethane sound insulating material. Sound data has been recorded and processed using a cutting-edge ¼” diffuse field microphone and Pulse software platform by Bruel & Kjaer. Thus far, a baseline of the aero gas turbine noise and harshness testing was achieved using Jet-A as the fuel of choice. The experiment will have the soy-based sound insulating material compared to the aforementioned baseline, and melamine, a common insulating material for aerospace due to its low density and low flammability. The areo gas turbine will run at speeds of 65,000 rpm, 70,000 rpm, and 75,000 rpm. However, 70,000 rpm is the focus for all sound insulating materials. The insulating material will be structured into a cube that will house the microphone, and the microphone is located at approximately one meter away from the source.
