Rupture-Induced Underwater Sound Source for Use in Underwater Acoustics Experiments
Abstract
"High amplitude, impulsive, underwater sound sources are commonly used in underwater acoustics experiments and research. Applied Research Laboratories, the University of Texas at Austin (ARL:UT) has demonstrated the viability of utilizing a rupture disc as an underwater sound source. A rupture disc is a destructible diaphragm used in industrial applications, which is designed tobreak at a specific pressure differential. Placing a rupture disc over an evacuated chamber and mechanically breaking the disc (either manually, or as a result of the hydrostatic pressure) has proven to produce high-amplitude, broadband waveforms. In addition to the high amplitude nature of the impulse, it has been found that the duration of the waveform is relatively short (less than 5 ms) when compared to other transient events produced by sources such as SUS charges and theCombustive Sound Source, which last on the order of 100 ms due to subsequent bubble oscillations. A prototype of the Rupture-Induced Underwater Sound Source (RIUSS) has be shown to produce peak pressures as high as 247 dB re 1 Pa at 1 meter, and it has shown good repeatability in spectral levels from 200 to 2,000 Hz. The objective of this proposal is to design and fabricate a multi-chamber apparatus to be deployed from ocean going vessels. The deployment apparatus will also contain a reference hydrophone and a depth sensor in order to accuratelycapture RIUSS source signatures."
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 08, 2020
- Source ID
- N000142012464
Entities
People
- Andrew R McNeese
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Austin