Resonance frequencies of a spherical aluminum shell subject to static internal pressure | Zendy

Andrew A. Piacsek | Zendy; Sami Abdul-Wahid | Zendy; Robert P. Taylor | Zendy

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Resonance frequencies of a spherical aluminum shell subject to static internal pressure

Author(s) -

Andrew A. Piacsek,

Sami Abdul-Wahid,

Robert P. Taylor

Publication year - 2012

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.4721647

Subject(s) - shell (structure) , bending , resonance (particle physics) , amplitude , spherical shell , aluminium , materials science , internal pressure , mechanics , vibration , frequency shift , nuclear magnetic resonance , acoustics , atomic physics , physics , optics , composite material

Measurements of the vibrational response of a spherical aluminum shell subject to changes in the interior pressure clearly demonstrate that resonance frequencies shift higher as the pressure is increased. The frequency shift appears to be smaller for longitudinal modes than for bending wave modes. The magnitude of frequency shift is comparable to analytical predictions made for thin cylindrical shells. Changes in the amplitudes of resonance peaks are also observed. A possible application of this result is a method for noninvasively monitoring pressure changes inside sealed containers, including intracranial pressure in humans.

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