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The Impact of Vibrations on Mobile I...

Lindsey, Bryce B.

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The Impact of Vibrations on Mobile Infrasound Sensing and the Development of a Custom Sensor Package.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Impact of Vibrations on Mobile Infrasound Sensing and the Development of a Custom Sensor Package./
Author:	Lindsey, Bryce B.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
Description:	119 p.
Notes:	Source: Masters Abstracts International, Volume: 85-02.
Contained By:	Masters Abstracts International85-02.
Subject:	Aerospace engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30423755
ISBN:	9798380078580

The Impact of Vibrations on Mobile Infrasound Sensing and the Development of a Custom Sensor Package.
Lindsey, Bryce B.

The Impact of Vibrations on Mobile Infrasound Sensing and the Development of a Custom Sensor Package. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 119 p.

Source: Masters Abstracts International, Volume: 85-02.

Thesis (M.S.)--Oklahoma State University, 2023.

This item must not be sold to any third party vendors.

Acoustic frequencies below 20 Hz, referred to as "infrasound", are emitted by various phenomena. Events such as volcanoes, tornadoes, earthquakes, industrial processes, detonations, and bolides, can be analyzed via the infrasound they produce. Researchers often use fixed-location sensors to observe correlations between infrasound signals and the location, strength, and behavior of these events. However, recent efforts to deploy infrasound sensors on-board a storm-chasing vehicle (targeting tornado-induced infrasound) have yielded unexpected results. Following an initial investigation, it was suspected that vibrations were responsible for abnormal spectral content observed while deployed on-board the vehicle. To explore the mitigation of vibrations on mobile infrasound acquisition, a custom seismo-acoustic sensor was constructed: the Cloud-capable Low-cost Acoustic and Seismic sensor Package (CLASP). CLASP consists of a pressure transducer mounted orthogonally to the dominant vibration vector component on common mobile platforms and utilizes an open source cloud-based storage protocol, both of which aim to optimize the sensor package for mobile infrasound measurements. Following its construction, data collected from both CLASP and a previously fielded sensor were compared during lab and field testing: acoustic and acceleration data was acquired while mounted to an unmanned aerial vehicle, automobile, and shaker table. Throughout controlled lab tests, the CLASP design helped decouple vibrations from the acoustic signals collected from the pressure transducer. However, field tests revealed that the primary contributor to seismo-acoustic coupling is static pressure oscillations due to changes in altitude as the package vibrates; a mechanism that is not mitigated by the CLASP design. Ultimately, CLASP and its source code, components, and methodology are presented in this work, as well as a summary of guidelines for infrasound data acquisition in vibrationally-active environments.

ISBN: 9798380078580Subjects--Topical Terms:

1002622
Aerospace engineering.
Subjects--Index Terms:

Infrasound

The Impact of Vibrations on Mobile Infrasound Sensing and the Development of a Custom Sensor Package.
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245 1 0 $a The Impact of Vibrations on Mobile Infrasound Sensing and the Development of a Custom Sensor Package.
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300 $a 119 p.
500 $a Source: Masters Abstracts International, Volume: 85-02.
500 $a Advisor: Elbing, Brian.
502 $a Thesis (M.S.)--Oklahoma State University, 2023.
506 $a This item must not be sold to any third party vendors.
520 $a Acoustic frequencies below 20 Hz, referred to as "infrasound", are emitted by various phenomena. Events such as volcanoes, tornadoes, earthquakes, industrial processes, detonations, and bolides, can be analyzed via the infrasound they produce. Researchers often use fixed-location sensors to observe correlations between infrasound signals and the location, strength, and behavior of these events. However, recent efforts to deploy infrasound sensors on-board a storm-chasing vehicle (targeting tornado-induced infrasound) have yielded unexpected results. Following an initial investigation, it was suspected that vibrations were responsible for abnormal spectral content observed while deployed on-board the vehicle. To explore the mitigation of vibrations on mobile infrasound acquisition, a custom seismo-acoustic sensor was constructed: the Cloud-capable Low-cost Acoustic and Seismic sensor Package (CLASP). CLASP consists of a pressure transducer mounted orthogonally to the dominant vibration vector component on common mobile platforms and utilizes an open source cloud-based storage protocol, both of which aim to optimize the sensor package for mobile infrasound measurements. Following its construction, data collected from both CLASP and a previously fielded sensor were compared during lab and field testing: acoustic and acceleration data was acquired while mounted to an unmanned aerial vehicle, automobile, and shaker table. Throughout controlled lab tests, the CLASP design helped decouple vibrations from the acoustic signals collected from the pressure transducer. However, field tests revealed that the primary contributor to seismo-acoustic coupling is static pressure oscillations due to changes in altitude as the package vibrates; a mechanism that is not mitigated by the CLASP design. Ultimately, CLASP and its source code, components, and methodology are presented in this work, as well as a summary of guidelines for infrasound data acquisition in vibrationally-active environments.
590 $a School code: 0664.
650 4 $a Aerospace engineering. $3 1002622
650 4 $a Remote sensing. $3 535394
650 4 $a Mechanical engineering. $3 649730
653 $a Infrasound
653 $a Tornadoes
653 $a Vibrations
653 $a Infrasound signals
653 $a Infrasound sensors
653 $a CLASP
653 $a Seismo-acoustic sensor
690 $a 0538
690 $a 0548
690 $a 0799
710 2 $a Oklahoma State University. $b Mechanical & Aerospace Engineering. $3 3194223
773 0 $t Masters Abstracts International $g 85-02.
790 $a 0664
791 $a M.S.
792 $a 2023
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30423755