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Session: Non-Traditional Application of Seismo-Acoustics for Non-Traditional Monitoring [Poster]

Type: Poster

Date: 4/26/2019

Time: 06:00 PM

Room: Fifth Avenue

[Withdrawn] Non-Traditional Application of Seismo-Acoustics for Non-Traditional Monitoring

This talk discusses on-going research at Georgia Tech Research Institute (GTRI), the applied research arm of Georgia Institute of Technology, in non-traditional application of Seismo-acoustics for Non-traditional Monitoring. In particular it deals with connection between seismic activity related to industrial machinery and Infrasound. In particular, results of a study that compared a number of commercially available infrasound sensors with and without a wind screen loaned to GTRI by NASA Langley will be presented. Sources of producing controlled infrasound under consideration at GTRI will also be discussed. These include a sonic boom simulator, a low frequency acoustic driver, oscillating jets, and door opening and closing. Each source was most effective in a given frequency range. Controlled infrasound at 0.1 Hz was obtained by varying the exit Mach number of exit Mach number of a cold plume from very low Mach number to a high Mach number at a nominal frequency of 0.1 Hz. It is expected that the amplitude of this signal will increase by heating the jet. Preliminary results of successful attempts at removing wind noise using Wavelet methodology are also shown. Characteristics of seismic signals from a fan and a compressor in a building together with related infrasound will be discussed. The implication of such research on monitoring industrial machinery activity will be summarized.

Presenting Author: Krishan K. Ahuja

Additional Authors