Frequency domain synthetic aperture focusing technique for variable-diameter cylindrical components

Jin, Haoran; Wu, Eryong; Ye, Han; Yang, Kun; Chen, Jian

doi:10.1121/1.5003650

Cited by 13 publications

(3 citation statements)

References 29 publications

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“…Compared to other detection methods (radar or laser), ultrasound is more suitable in water [4,5]. On one hand, the reflection coefficient of an interface depends on the mismatch in acoustic impedance of the materials on either side of the interface.…”

Section: Introductionmentioning

confidence: 99%

A High-Resolution Ultrasonic Ranging System Using Laser Sensing and a Cross-Correlation Method

et al. 2019

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Ultrasound has been proven to be a valid tool for ranging, especially in water. In this paper, we design a high-resolution ultrasonic ranging system that uses a thin laser beam as an ultrasonic sensor. The laser sensing provides a noncontact method for ultrasound detection based on acousto-optic diffraction. Unlike conventional methods, the ultrasound transmitted from the transducer is recorded as the reference signal when it first passes through the laser. It can be used to improve the accuracy and resolution of the time-of-flight (TOF) by a cross-correlation method. Transducers with a central frequency of 1 MHz and diameters of 20 mm and 28 mm are used in the experiment. Five targets and a test piece are used to evaluate the ranging performance. The sound velocity is measured by the sound velocity profiler (SVP). The repeatability error of TOF is less than 4 ns, and the theoretical resolution of TOF is 0.4 ns. The results show a measurement resolution within one-tenth of the wavelength of ultrasound and an accuracy better than 0.3 mm for targets at a distance up to 0.8 m. The proposed system has potential applications in underwater ranging and thickness detection.

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Section: Introductionmentioning

confidence: 99%

A High-Resolution Ultrasonic Ranging System Using Laser Sensing and a Cross-Correlation Method

et al. 2019

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“…Suitably dealing with the defect echo signal will greatly benefit the quantitative inversion of the defects of cylindrical components [14]. The task of deriving the structure of an object from scattered radiation is known as the inverse scattering problem.…”

Section: Introductionmentioning

confidence: 99%

Shape Reconstruction of Eccentric Defect in Cylindrical Component by Modified Born Approximation Method

Zheng

Liu

et al. 2022

Journal of Sensors

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In this paper, a cylindrical aluminum sample with an eccentric circular hole was prepared, and ultrasonic measurements were carried out by experimental means. The measurement area was limited to a plane edge perpendicular to the axis of the cylindrical component. The measured waveform data were input into the formula of approximate correction method, and the section image was obtained by using a modified Born approximation (MBA) method. Then, the three-dimensional (3D) shape of the defects in the aluminum sample was reconstructed by superimposing the cross-sectional images. Results showed that the defect reconstruction effect of the two-dimensional section and the 3D defect reconstruction effect were significantly improved by the MBA method.

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“…Cylindrical components have been widely used in practical applications, such as subsea pipelines and train axles [1]. These components bear complicated loadings during their service, and if there are flaws in them, their service security will be threatened.…”

Section: Introductionmentioning

confidence: 99%

Modeling Flaw Pulse-Echo Signals in Cylindrical Components Using an Ultrasonic Line-Focused Transducer with Consideration of Wave Mode Conversion

Wang

Liu

et al. 2019

Sensors

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Investigations on flaw responses can benefit the nondestructive testing of cylinders using line-focused transducers. In this work, the system function, the wave beam model, and a flaw scattering model are combined to develop an ultrasonic measurement model for line-focused transducers to predict flaw responses in cylindrical components. The system function is characterized using reference signals by developing an acoustic transfer function for line-focused transducers, which works at different distances for both planar and curved surfaces. The wave beams in cylindrical components are modeled using a multi-Gaussian beam model, where the effects of wave mode conversion and curvatures of cylinders are considered. Simulation results of wave beams are provided to analyze their propagation behaviors. The proposed ultrasonic measurement model is certified from good agreement between the experimental and predicted signals of side-drilled holes. This work provides guidance for evaluating the detection ability of line-focused transducers in cylindrical component testing applications.

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Frequency domain synthetic aperture focusing technique for variable-diameter cylindrical components

Cited by 13 publications

References 29 publications

A High-Resolution Ultrasonic Ranging System Using Laser Sensing and a Cross-Correlation Method

A High-Resolution Ultrasonic Ranging System Using Laser Sensing and a Cross-Correlation Method

Shape Reconstruction of Eccentric Defect in Cylindrical Component by Modified Born Approximation Method

Modeling Flaw Pulse-Echo Signals in Cylindrical Components Using an Ultrasonic Line-Focused Transducer with Consideration of Wave Mode Conversion

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