A new nondestructive technique for measuring pressure in vessels by surface waves

Zhang, Hongjian; He, Qing; Yan, Yong

doi:10.1016/j.apacoust.2007.05.011

Cited by 16 publications

(4 citation statements)

References 24 publications

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“…There is another approach to measure the pressure—non-invasive approaches [ 1 ]. There are several proposed methods of this approach, such as the strain gauge method [ 2 ], the capacitor method [ 3 ], and the ultrasonic method [ 4 , 5 , 6 , 7 ]. These methods can solve some problems, but there is still room for improvement in terms of the accuracy.…”

Section: Introductionmentioning

confidence: 99%

“…However, it is greatly influenced by the type of medium inside the vessel. Zhang et al [ 4 ] found that the travel-time changes of surface waves changed linearly with the pressure, and applied the surface waves to the pressure measurement of thin-walled vessels. However, the propagation of the surface wave is severely affected by the roughness condition of the vessel wall.…”

Section: Introductionmentioning

confidence: 99%

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A Non-Intrusive Pressure Sensor by Detecting Multiple Longitudinal Waves

Zhou

Lin

et al. 2016

Sensors

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Pressure vessels are widely used in industrial fields, and some of them are safety-critical components in the system—for example, those which contain flammable or explosive material. Therefore, the pressure of these vessels becomes one of the critical measurements for operational management. In the paper, we introduce a new approach to the design of non-intrusive pressure sensors, based on ultrasonic waves. The model of this sensor is built based upon the travel-time change of the critically refracted longitudinal wave (LCR wave) and the reflected longitudinal waves with the pressure. To evaluate the model, experiments are carried out to compare the proposed model with other existing models. The results show that the proposed model can improve the accuracy compared to models based on a single wave.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Non-Intrusive Pressure Sensor by Detecting Multiple Longitudinal Waves

Zhou

Lin

et al. 2016

Sensors

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“…[1][2] (Cross-Correlation Function CCF) [3] CCF He Hilbert-Huang Transform HHT [4] HHT IMF CCF HHT II. [5] FRR (forward -reverse filtering, reverse output) [6] FRR…”

mentioning

confidence: 99%

Application of zero-phase digital filter in ultrasonic pressure measurement

Ling

Liu

Kong

et al. 2011

2011 International Conference on Electric Information and Control Engineering

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Conventional methods for pressure measurement commonly require drilling a hole in the wall of the vessels, which usually lead to potential safety problems. It is meaningful to study a nondestructive pressure measurement method using ultrasonic technique. One of key problems in ultrasonic pressure measurement is to estimate the time delay of two ultrasonic pulses accurately. A general cross correlation method based on zero-phase digital filter was presented to improve the accuracy of time delay estimation. Ultrasonic critically refracted longitudinal wave was applied to measure the pressure. Ultrasonic signals contain the correlative noise, therefore, pre-filtering of signal was needed. Zero-phase digital filter which could effectively eliminate the phase distortion that caused by common digital filter was proposed to process the signals. Compared to Hilbert-Huang Transform, the experimental result shows that the general cross correlation method based on zero-phase digital filter is more stable and simpler.

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“…In the field of pressure measurement, Guers et al [11] have established the relationship between the amplitude of reflected ultrasonic wave and the pressure, and measured the pressure by computing the reflected ultrasonic signals from the fluid-vessel interface. Zhang et al [12,13] have analyzed the acoustoelastic effect in the thin-walled vessels and proposed a method of pressure measurement based on the observation that the propagation velocity of the ultrasonic wave is usually influenced by the stress on the vessel wall. In our previous research [14], we identified that the surface wave and the critically refracted longitudinal wave (L CR wave) are all susceptible to the roughness of the vessel's outer surface.…”

Section: Introductionmentioning

confidence: 99%

Pressure measurement based on multi‐waves fusion algorithm

Zhou

Zhang

et al. 2017

IET Science, Measurement & Technology

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Abstract:Measuring the pressure of a pressure vessel accurately is one of fundamental requirements of the operation of many complex engineering systems. Ultrasonic technique has been proposed to be a good alteration of non-intrusive measurement. Based on the study of acoustoelastic effect and thin-shell theory, it has been identified that the travel-time changes of the critically refracted longitudinal wave (L CR wave) and other reflected longitudinal waves are all proportional to the inner pressure. Considering the information redundancy in these waves, we proposed an approach for pressure measurement by using the information fusion algorithm on multiple reflected longitudinal waves. In the paper, we discussed the fusion algorithm in details and proposed a pressure measurement model, which represents an accurate relationship between the pressure and the travel-time changes of multiple waves. Through the experiment, the analysis of data collected from experiment system showed that the pressure measurement based on the multi-wave model is notably more accurate than the one based on the single-wave model (the average relative error (ARE) can be less than 7.24% and the root-mean-square error (RMSE) can be lower than 0.3MPa).

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A new nondestructive technique for measuring pressure in vessels by surface waves

Cited by 16 publications

References 24 publications

A Non-Intrusive Pressure Sensor by Detecting Multiple Longitudinal Waves

A Non-Intrusive Pressure Sensor by Detecting Multiple Longitudinal Waves

Application of zero-phase digital filter in ultrasonic pressure measurement

Pressure measurement based on multi‐waves fusion algorithm

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