Fundamental study of molten pool depth measurement method using an ultrasonic phased array system

Ultrasound sources that use a stripe-mode rectangular vibrating plate radiate strong ultrasound waves in the air. In this study, we investigated the design strategy for combining the vibrating plate with rigid walls and evaluated the intense ultrasound waves radiated by the sound source. First, we examined the design method for a rectangular transverse vibrating plate with both ends fixed and the vibration amplitude distribution of the vibrating plate. Second, we measured the sound pressure distribution in the formation of the standing wave field. Finally, we clarified the relationship between the input power and sound pressure of the standing wave field antinodes.

Section: Study Of Rectangular Vibrating Plate Sizementioning

confidence: 99%

“…Ultrasound is used in various fields. [1][2][3][4][5][6][7][8][9][10][11][12][13] In particular, ultrasound is used for deodorization, atomization, and aerosol aggregation. [14][15][16][17][18][19][20][21][22] These applications require intense ultrasound waves.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound source using a rectangular vibrating plate combined with rigid walls

Satô¹,

Asami²,

Miura³

2017

“…95,96,126,128,129,[136][137][138] Moreover, some studies have considered measurement techniques related to liquids such as acoustic properties including nonlinearity, and the depth or level of a liquid. [139][140][141][142][143][144][145] The measurement techniques Source s(t)…”

Section: Measurement Techniques Imaging Nondestructive Evaluationmentioning

confidence: 99%

Introduction of measurement techniques in ultrasonic electronics: Basic principles and recent trends

Mizutani¹,

Wakatsuki²,

Ebihara³

2016

Measurementthe act of measuring physical properties that we performhas the potential to contribute to the successful advancement of sciences and society. To open doors in physics and other sciences, various measurement methods and related applications have been developed, and ultrasound has remained a useful probe, power source, and interesting measurement object for the past two centuries. In this paper, we first summarize the basic principles of ultrasound from the viewpoint of measurement techniques for readers who just have started studying or are interested in the field of ultrasonic electronics. Moreover, we also introduce recent studiesultrasonic properties of materials, measurement techniques, piezoelectric devices, nonlinear acoustics, biomedical ultrasound, and ocean acousticsand their trends related to measurement techniques in ultrasonic electronics to provide some ideas for related applications.

“…In recent years, there has been much research on the noncontact use of aerial ultrasound, such as the use of strong ultrasound using ultrasonic sensors. [1][2][3][4][5][6][7][8][9][10][11][12] However, because of the small size of ultrasonic sensors, the sound pressure of sound waves that can be emitted by a single sensor is low. Therefore, in order to emit sound waves with high sound pressure, ultrasonic sensors are arrayed in large numbers (50-300) and used as a focusing sound source.…”

Section: Introductionmentioning

confidence: 99%

High-intensity aerial ultrasonic source with sharp directivity containing a compact circular vibrating plate

Monzen

Masuda

Asami

et al. 2021

An intense aerial ultrasonic source containing a compact circular vibrating plate with a uniform rod-type partially grooved source that can produce large displacement in part of the piston vibration and emit intense sound waves in a direction perpendicular to the vibration surface is investigated. Two different compact circular vibrating plates of intense aerial ultrasonic sources (square grooves and round grooves) are designed by considering the stress generated in ultrasonic sources and the sound pressure of the radiated sound waves. The vibration displacement distribution, the directivity of the emitted sound waves, and the input/output characteristics in designed ultrasonic sources are discussed. It was found that the sound waves can be emitted farther away perpendicular to the vibration surface at a very high sound pressure compared with traditional sources.