A non-invasive short range acoustic technique for liquid level measurement in containers

Palanisamy, Rajendra P.; Chavez, Luis A.; Hanson, Alexa B.; Goff, George S.; Findikoglu, Alp T.

doi:10.1016/j.apacoust.2024.109978

Applied Acoustics

2024

DOI: 10.1016/j.apacoust.2024.109978

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A non-invasive short range acoustic technique for liquid level measurement in containers

Rajendra P. Palanisamy,

Luis A. Chavez,

Alexa B. Hanson

et al.

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2024

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Accurate Ultrasonic Thickness Measurement for Arbitrary Time-Variant Thermal Profile

Palanisamy,

Pyun,

Findikoglu

2024

Sensors

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Ultrasonic thickness measurement of mechanical structures is one of the most popular and commonly used nondestructive methods for various kinds of process control and corrosion monitoring. With ultrasonic propagation speed being temperature-dependent, the thickness measurement can be performed reliably only when the thermal profile is completely known. Most conventional techniques assume the temperature of the test structure is uniform and at room temperature across its thickness. Such assumptions may lead to large errors in the thickness measurement, especially when there are significant temperature variations across the thickness. State-of-the-art techniques use external temperature measurements or implement iterative methods to compensate for the unknown thermal profiles. However, such techniques produce unsatisfactory results when the heat distribution is complex or varies rapidly with time. In this work, we propose a two-sensors technique, using both compressive and shear excitations, with a non-iterative rapid data processing method for accurate thickness measurement under arbitrary time-variant thermal profile. The independent behavior of shear and compressive waves is used to formulate a real-time thickness estimation technique. The developed technique is experimentally validated on a steel plate with fixed acoustic sensors. Test results show that the error in thickness estimation can be reduced by up to 98% compared to conventional thickness gauging methods.

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Accurate Ultrasonic Thickness Measurement for Arbitrary Time-Variant Thermal Profile

Palanisamy,

Pyun,

Findikoglu

2024

Sensors

View full text Add to dashboard Cite

show abstract

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A non-invasive short range acoustic technique for liquid level measurement in containers

Cited by 1 publication

References 20 publications

Accurate Ultrasonic Thickness Measurement for Arbitrary Time-Variant Thermal Profile

Accurate Ultrasonic Thickness Measurement for Arbitrary Time-Variant Thermal Profile

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