The measurement of pressure and level of fill in sealed storage drums

Costley, R. Daniel; Henderson, Mark; Patel, Hitesh; Jones, Eliot; Boudreaux, Gary; Plodinec, Milivoj

doi:10.1016/j.ndteint.2006.12.004

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…Other studies have used similar acoustic methods to examine non-film structures. Costley, et al did a study looking at the shift in the resonance frequencies of storage lids to determine changes in the internal pressure of the sealed storage drums [40]. Hsieh, et al used acoustic time-of-flight measurements to find the state of charge and health in packaged battery cells.…”

Section: Previous Acoustic Workmentioning

confidence: 99%

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Characterization of mechanical properties of battery electrode films from acoustic resonance measurements

Dallon

Yao

Wheeler

et al. 2018

Journal of Applied Physics

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and Computer Engineering, BYU Master of Science Measurements of the mechanical properties of lithium-ion battery electrode films can be used to quantify and improve manufacturing processes and to predict the mechanical and electrochemical performance of the battery. This thesis demonstrates the use of acoustic resonances to distinguish among commercial-grade battery films with different active electrode materials, thicknesses, and densities. Resonances are excited in a clamped circular area of the film using a pulsed infrared laser or speaker and responses are measured using an electret condenser microphone. A numerical model is used to quantify the sensitivity of resonances to changes in mechanical properties. When the numerical model is compared to simple analytical models for thin plates and membranes, the battery films measured here trend more similarly to the membrane m odel. Resonance measurements are also used to monitor the drying process. Results from a scanning laser Doppler vibrometer verify the modes excited in the films, and a combination of experimental and simulated results is used to estimate the Young's modulus of the battery electrode coating layer.

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Section: Previous Acoustic Workmentioning

confidence: 99%

“…5.4) makes the extracted Young's modulus more sensitive to frequency changes than the higher mode. Furthermore, there is less energy in the higher modes, since the first mode is preferentially excited [40]. The fundamental mode is also more efficient at producing sound than the higher modes [42].…”

Section: Extracting Young's Modulusmentioning

confidence: 99%

Characterization of mechanical properties of battery electrode films from acoustic resonance measurements

Dallon

Yao

Wheeler

et al. 2018

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…Recently, efforts have been made to use the ''Kettledrum'' effect to measure internal pressures. 6 If one views the drum lid in the same manner as a kettledrum membrane, then one can understand how an increasing pressure inside the drum would place more strain on the drum lid which would in turn change its resonance frequency when ''thumped''. Using this concept, attempts have been made to correlate the resonating frequency of the drum lid with pressures inside the drum.…”

Section: Symptoms and Measurements Of Drum Pressurizationmentioning

confidence: 99%