High temperature integrated ultrasonic shear and longitudinal wave probes

Ono, Yuu; Jen, C. K.; Kobayashi, Makiko

doi:10.1063/1.2669719

Cited by 13 publications

(29 citation statements)

References 17 publications

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“…For this configuration, the symmetric-like PAW echo travelled nearly 25.4 mm right the way from IUT with a measured velocity of 5462 m/s and then converted to SH PAW modes at the reflection slanted edge across the width of the Al plate and vice versa. For this configuration the chosen mode conversion angle using the analogy of L to S wave was 61.78 so that the propagated SH PAW is precisely along the length direction of the Al plate [7]. The calculated energy reflection coefficient [7] at this angle from the symmetric-like PAW to the SH PAW is nearly 96%.…”

Section: Introductionmentioning

confidence: 99%

“…For this configuration the chosen mode conversion angle using the analogy of L to S wave was 61.78 so that the propagated SH PAW is precisely along the length direction of the Al plate [7]. The calculated energy reflection coefficient [7] at this angle from the symmetric-like PAW to the SH PAW is nearly 96%. The measured S wave velocity through the plate thickness was 2939 m/s.…”

Section: Introductionmentioning

confidence: 99%

“…IUTs located at the edge of a plate were used to generate and receive symmetrical and SH PAWs using the mode conversion technique [7]. IUTs were operated in pulse/echo modes at temperatures up to 1508C.…”

Section: Fig 4 Schematic Diagram Of Iut Coated Directly Onto Side Edmentioning

confidence: 99%

“…The thick PZT film IUT can be directly deposited onto metallic planar and curved surfaces as a longitudinal (L) wave UT. This Letter focuses on the use of a mode conversion method [7]. The miniature and lightweight L wave IUT can be used to excite and receive symmetric and shear-horizontal (SH) PAWs along a 2 mm-thick aluminium (Al) plate for line defect detection.…”

Section: Introductionmentioning

confidence: 99%

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Integrated piezoelectric plate acoustic waves transducers

Jen

Kobayashi

2008

Electron. Lett.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Fig 4 Schematic Diagram Of Iut Coated Directly Onto Side Edmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Integrated piezoelectric plate acoustic waves transducers

Jen

Kobayashi

2008

Electron. Lett.

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“…Extensive investigations in the field of hightemperature integrated ultrasonic shear and longitudinal wave probes are known [1,[14][15][16][17][18]. In these metallic (aluminium) probes shear waves are generated due to mode conversion from longitudinal to shear waves because of reflection inside the metallic substrate having a specific shape (64.6º angle).…”

Section: Mode Conversionmentioning

confidence: 99%

Simultaneous generation of longitudinal and shear ultrasonic waves: knowledge summary, PZT piezoelements manufacturing and experiments

Voleišis

Kažys

Voleišienė

et al. 2011

ultra

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Known ultrasonic transducers for simultaneous generation of longitudinal and shear waves are reviewed: quartz and lithium niobate crystals tilted CdS and ZnO films. A special attention is devoted to the rotated cuts of PZT piezoceramics, literature data theoretical background conclusions are analysed. Manufacturing technology of dual mode PZT transducers with different cut angles and thickness was developed. Reliable electrodes suitable for soldering are made chemically in electroless nickel (EN) plating bath. Nickel electrodes are additionally dectroplated with silver. Various types of PZT ceramics were successfully used. From impedance measurements longitudinal and shear resonances were determined for typical thicknesses 45-100 μm. The cut angle 36º for equal efficiency of both waves was experimentally determined. Operation of transducers soldered to the steel rods and measurement bodies of the certain geometry was investigated. Measurements were provided in a temperature range 20-160 ºC. Axial load experiments up to 234 MPa were provided and corresponding linear dependencies were determined. Experiments showed good performance of developed dual mode PZT ultrasonic transducers.

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Bulk rheometry at high frequencies: a review of experimental approaches

et al. 2019

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High-frequency rheology is a form of mechanical spectroscopy which provides access to fast dynamics in soft materials and hence can give valuable information about the local scale microstructure. It is particularly useful for systems where timetemperature superposition cannot be used, when there is a need to extend the frequency range beyond what is possible with conventional rotational devices. This review gives an overview of different approaches to high-frequency bulk rheometry, i.e. mechanical rheometers that can operate at acoustic (20 Hz-20 kHz) or ultrasound (> 20 kHz) frequencies. As with all rheometers, precise control and know-how of the kinematic conditions are of prime importance. The inherent effects of shear wave propagation that occur in oscillatory measurements will hence be addressed first, identifying the gap and surface loading limits. Different high-frequency techniques are then classified based on their mode of operation. They are reviewed critically, contrasting ease of operation with the dynamic frequency range obtained. A comparative overview of the different types of techniques in terms of their operating window aims to provide a practical guide for selecting the right approach for a given problem. The review ends with a more forward looking discussion of selected material classes for which the use of high-frequency rheometry has proven particularly valuable or holds promise for bringing physical insights.

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High temperature integrated ultrasonic shear and longitudinal wave probes

Cited by 13 publications

References 17 publications

Integrated piezoelectric plate acoustic waves transducers

Integrated piezoelectric plate acoustic waves transducers

Simultaneous generation of longitudinal and shear ultrasonic waves: knowledge summary, PZT piezoelements manufacturing and experiments

Bulk rheometry at high frequencies: a review of experimental approaches

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