Multi-mode ultrasonic waves focusing in a variable focus technique for simultaneous sound-velocity and thickness measurement

Yang, Xiaoyu; Wang, Chuanyong; Sun, Anyu; Ju, Bing‐Feng

doi:10.1016/j.apacoust.2019.107090

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…Measurement of elastic properties of thin films by high frequency ultrasonic waves was analyzed by a few authors [ 3 , 4 ]. For example, measurement of elastic properties and density of thermoplastic thin polymer films such as polyethylene terephthalate, polycaprolactone triol, and polyvinyl butyral was discussed in [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous Measurement of Thickness and Elastic Properties of Thin Plastic Films by Means of Ultrasonic Guided Waves

Kažys

Tumšys

2021

Sensors

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Ultrasonic guided waves are already used for material characterization. The advantage of these waves is that they propagate in the plane of a plate and their propagation characteristics are sensitive to properties of the material. The objective of this research was to develop an ultrasonic method that could be used to measure the properties of thin plastic polyvinylchloride films (PVC). The proposed method exploits two fundamental Lamb wave modes, A0 and S0, for measurement of a thin film thickness and Young’s modulus. The Young’s modulus is found from the measured phased velocity of the S0 mode and the film thickness from the velocities of both A0 and S0 modes. By using the proposed semi-contactless measurement algorithm, the Young’s modulus and thickness of different thickness (150 µm and 200 µm) PVC films were measured. The uncertainty of thickness measurements of the thinner 150 µm PVC film is 2% and the thicker 200 µm PVC film is 3.9%.

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Section: Introductionmentioning

confidence: 99%

“…Application for measurements of a focused ultrasonic beam was discussed in [ 4 ]. In this paper, the authors analyzed a double focus method based on irradiation of thin metallic plates by a high frequency 57 MHz ultrasonic focused beam.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Measurement of Thickness and Elastic Properties of Thin Plastic Films by Means of Ultrasonic Guided Waves

Kažys

Tumšys

2021

Sensors

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Ultrasonic measurement for lubricant film thickness with consideration to the effect of the solid materials

He,

Wang,

et al. 2023

Applied Acoustics

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Solid–liquid interface reconstruction for sandwich structure metal plate via laser-ultrasonic techniques

Zhang

Dong

et al. 2021

Review of Scientific Instruments

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A laser-ultrasonic testing system was built for the purpose of liquid core detection of a moving and inaccessible continuous casting slab. Reflected waves from different solid–liquid interfaces are studied using the simulation model established with the finite element method. The solid–liquid interfaces of a sandwich structure aluminum plate were preliminarily detected and reconstructed using the time of flight data of ultrasound propagated between layers. Multiple equal-interval ultrasonic echoes were detected and analyzed according to the reflection and transmission of elastic waves in the solid–liquid interface. A B-scan map for the sandwich structure sample was obtained to show the difference between echoes reflected from each interface. Interfaces of different samples were used to calculate the interface position with relative error no more than 1.3%.

show abstract

Multi-mode ultrasonic waves focusing in a variable focus technique for simultaneous sound-velocity and thickness measurement

Cited by 6 publications

References 13 publications

Simultaneous Measurement of Thickness and Elastic Properties of Thin Plastic Films by Means of Ultrasonic Guided Waves

Simultaneous Measurement of Thickness and Elastic Properties of Thin Plastic Films by Means of Ultrasonic Guided Waves

Ultrasonic measurement for lubricant film thickness with consideration to the effect of the solid materials

Solid–liquid interface reconstruction for sandwich structure metal plate via laser-ultrasonic techniques

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