Experimental investigation of acoustic properties of titanium alloys in the temperature range of 20–1000°C

Lyakhovitskii, M. M.; Минина, Н. А.; Roshchupkin, V. V.; Pokrasin, M. A.; Chernov, A. I.; Sobol, N. L.; Kol’tsov, A. G.

doi:10.1134/s0018151x13010100

Cited by 7 publications

(3 citation statements)

References 1 publication

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“…Previously, according to the same technique, we inves tigated the acoustic properties of titan alloys [12,13] and construction materials [14]. The technique sets up strong requirements for both the carrier signal genera tion and the geometrical shape of the sample itself.…”

Section: Technique Of Measurements Of the Cobalt Acoustic Propertiesmentioning

confidence: 99%

Investigation of the acoustic properties of cobalt

et al. 2014

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The results of the experimental investigation of the acoustic (ultrasound velocity and attenuation coefficient) and acoustic emission properties, as well as of the relative thermal expansion of cobalt, within the temperature range of 20-1100°C are presented. By the mean square method, we obtain the approximat ing equations for the temperature dependencies of the investigated and the calculated thermophysical cobalt properties.

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Section: Technique Of Measurements Of the Cobalt Acoustic Propertiesmentioning

confidence: 99%

Investigation of the acoustic properties of cobalt

et al. 2014

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“…The transducer is made of titanium alloy, which has excellent acoustic properties. [5] Fig. 2 shows the modal analysis result of the transducer.…”

Section: Ultrasonic Transducermentioning

confidence: 99%

Extended Abstract for ASPEN2022(2~4pages) The effects of the temperature on the Ultrasonic transducers

Choo¹,

Kurniawan²,

Xu³

et al. 2022

Asian Society for Precision Engineering and Nanotechnology (ASPEN 2022)

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Nowadays difficult-to-cut materials are widely used in industrial products such as automobile parts or aerospace parts. Thus, ultrasonic-assisted machining comes into the limelight for machining difficult-to-cut materials. Ultrasonic-assisted machining is a process that uses high-frequency vibration to the cutting tool to enhance the cutting force and surface integrity. The most important part of an ultrasonic machine device is the transducer, which generates ultrasonic vibrations. A high-frequency electrical signal is transformed into vibration motion in the ultrasonic transducer. However, during this process, heat is generated from the piezoelectric. The vibration amplitude of the ultrasonic transducers is reduced by this heat generation, which also changes the resonance frequency. Therefore, it needs a coolant when operating the ultrasonic transducer. The heat transfer in the operational condition of the ultrasonic transducer is examined in this paper with an infrared camera. Compare the conditions with and without coolant as well. Additionally, when the piezoelectric is in a high-temperature state, use an impedance analyzer to find the change in resonance frequency. The resonance frequency decrease by 0.91 % and the amplitude decreases by 32.9 % as the temperature reaches 70°C.

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“…The rigid wall assumption was taken in the derivation as the UFS was made of titanium alloy. The premise is reasonable for titanium alloy but not for PFA resin because the acoustic impedance of titanium alloy is much larger than that of PFA (Lyakhovitskii et al , 2013; Zhang and Cao, 2020).…”

Section: Introductionmentioning

confidence: 99%

Investigation on the influence of wall thickness on the reception signal in a PFA-made ultrasonic flow sensor

Hu,

Liu,

et al. 2024

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Purpose In a coaxial ultrasonic flow sensor (UFS), wall thickness is a vital parameter of the measurement tube, especially those with small inner diameters. The paper aims to investigate the influence of wall thickness on the transient signal characteristics in an UFS. Design/methodology/approach First, the problem was researched experimentally using a series of measurement tubes with different wall thicknesses. Second, a finite element method–based model in the time domain was established to validate the experimental results and further discussion. Finally, the plane wave assumption and oblique incident theory were used to analyze the wave propagation in the tube, and an idea of wave packet superposition was proposed to reveal the mechanism of the influence of wall thickness. Findings Both experimental and simulated results showed that the signal amplitude decreased periodically as the wall thickness increased, and the corresponding waveform varied dramatically. Based on the analysis of wave propagation in the measurement tube, a formula concerning the phase difference between wave packets was derived to characterize the signal variation. Originality/value This paper provides a new and explicit explanation of the influence of wall thickness on the transient signal in a co-axial UFS. Both experimental and simulated results were presented, and the mechanism was clearly described.

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Experimental investigation of acoustic properties of titanium alloys in the temperature range of 20–1000°C

Cited by 7 publications

References 1 publication

Investigation of the acoustic properties of cobalt

Investigation of the acoustic properties of cobalt

Extended Abstract for ASPEN2022(2~4pages) The effects of the temperature on the Ultrasonic transducers

Investigation on the influence of wall thickness on the reception signal in a PFA-made ultrasonic flow sensor

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