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Xiongbing Li
School of Traffic and Transportation Engineering, Central South University, Changsha, 410075, China

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Erratum
Published: 23 February 2021 in NDT & E International
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ACS Style

Yangguang Bu; Xiling Liu; Joseph A. Turner; Yongfeng Song; Xiongbing Li. Corrigendum to “Grain size evaluation with time-frequency ultrasonic backscatter” [NDT E Int 117 (2021) 102369]. NDT & E International 2021, 119, 102422 .

AMA Style

Yangguang Bu, Xiling Liu, Joseph A. Turner, Yongfeng Song, Xiongbing Li. Corrigendum to “Grain size evaluation with time-frequency ultrasonic backscatter” [NDT E Int 117 (2021) 102369]. NDT & E International. 2021; 119 ():102422.

Chicago/Turabian Style

Yangguang Bu; Xiling Liu; Joseph A. Turner; Yongfeng Song; Xiongbing Li. 2021. "Corrigendum to “Grain size evaluation with time-frequency ultrasonic backscatter” [NDT E Int 117 (2021) 102369]." NDT & E International 119, no. : 102422.

Journal article
Published: 06 January 2021 in Materials
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Nonlinear ultrasound is often employed to assess microdamage or nonlinear elastic properties of a material, and the nonlinear parameter is commonly used to quantify damage sate and material properties. Among the various factors that influence the measurement of nonlinear parameters, maintaining a constant contact pressure between the receiver and specimen is important for repeatability of the measurement. The use of an air-coupled transducer may be considered to replace the contact receiver. In this paper, a method of measuring the relative and absolute nonlinear parameters of materials is described using an air-coupled transducer as a receiver. The diffraction and attenuation corrections are newly derived from an acoustic model for a two-layer medium and the nonlinear parameter formula with all corrections is defined. Then, we show that the ratio of the relative nonlinear parameter of the target sample to the reference sample is equal to that of the absolute nonlinear parameter, and this equivalence is confirmed by measurements on three systems of aluminum samples. The proposed method allows the absolute measurement of the nonlinear parameter ratio or the nonlinear parameter without calibration of the air-coupled receiver and removes restrictions on the selection of reference samples.

ACS Style

Hyunjo Jeong; Sungjong Cho; Shuzeng Zhang; Xiongbing Li. Absolute Measurement of Material Nonlinear Parameters Using Noncontact Air-Coupled Reception. Materials 2021, 14, 244 .

AMA Style

Hyunjo Jeong, Sungjong Cho, Shuzeng Zhang, Xiongbing Li. Absolute Measurement of Material Nonlinear Parameters Using Noncontact Air-Coupled Reception. Materials. 2021; 14 (2):244.

Chicago/Turabian Style

Hyunjo Jeong; Sungjong Cho; Shuzeng Zhang; Xiongbing Li. 2021. "Absolute Measurement of Material Nonlinear Parameters Using Noncontact Air-Coupled Reception." Materials 14, no. 2: 244.

Journal article
Published: 19 November 2020 in Ultrasonics
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Previously, a transverse-to-transverse single scattering model (T-T SSR) was developed for a pulse echo configuration, which may have limitations for strongly scattering materials. In this work, a transverse-to-transverse double scattering model (T-T DSR) is presented to model the transverse ultrasonic backscatter more accurately. First, the Wigner distribution of the transducer beam pattern is extended to a transverse wave. Next, the multiple scattering framework is followed to derive the transverse and longitudinal components of the second-order scattering. Then, a quasi-Monte Carlo (QMC) method is used with Graphics Processing Unit (GPU) acceleration to calculate numerical results of the final expression which contains a five-dimensional integral. The correlation length, the focal length of the transducer, and incident angle are used to investigate differences between the T-T DSR model and the T-T SSR model. Finally, a backscatter experiment is performed on two stainless steel specimens with different grain sizes to determine the respective correlation lengths. The results show that the T-T DSR model has better performance over the T-T SSR model for evaluating the grain size of these relatively strongly-scattering specimens.

ACS Style

Yuantian Huang; Joseph A. Turner; Yongfeng Song; Xiongbing Li. Transverse-to-transverse diffuse ultrasonic double scattering. Ultrasonics 2020, 111, 106301 .

AMA Style

Yuantian Huang, Joseph A. Turner, Yongfeng Song, Xiongbing Li. Transverse-to-transverse diffuse ultrasonic double scattering. Ultrasonics. 2020; 111 ():106301.

Chicago/Turabian Style

Yuantian Huang; Joseph A. Turner; Yongfeng Song; Xiongbing Li. 2020. "Transverse-to-transverse diffuse ultrasonic double scattering." Ultrasonics 111, no. : 106301.

Journal article
Published: 12 October 2020 in NDT & E International
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The ultrasonic backscatter signal can be used to evaluate the grain size of polycrystalline media nondestructively. In this article, the joint time-frequency analysis is introduced into the ultrasonic backscatter model, with the independent scattering approximation. The time-frequency domain model is applied to predict the spatial variance surface (SVS) and fit the experimental results to evaluate the grain size with the approach giving a relative error of 2.26% in comparison with metallography. Moreover, it shows that the present method suppresses electrical noise better than either the time domain or the frequency domain models alone. Based on the global sensitivity analysis of Sobol's method, the sensitivities of transducer parameters and material parameters in the ultrasonic backscatter model are estimated. The sensitivity analysis shows that not all the transducer parameters in the model must be calibrated carefully. In addition, it is found that the grain size sensitivity index of the time-frequency backscatter model is higher than the time domain or the frequency-domain backscatter models. Overall, the backscatter model in the time-frequency domain can evaluate the microstructure more accurately.

ACS Style

Yangguang Bu; Xiling Liu; Joseph A. Turner; Yongfeng Song; Xiongbing Li. Grain size evaluation with time-frequency ultrasonic backscatter. NDT & E International 2020, 117, 102369 .

AMA Style

Yangguang Bu, Xiling Liu, Joseph A. Turner, Yongfeng Song, Xiongbing Li. Grain size evaluation with time-frequency ultrasonic backscatter. NDT & E International. 2020; 117 ():102369.

Chicago/Turabian Style

Yangguang Bu; Xiling Liu; Joseph A. Turner; Yongfeng Song; Xiongbing Li. 2020. "Grain size evaluation with time-frequency ultrasonic backscatter." NDT & E International 117, no. : 102369.

Journal article
Published: 19 March 2019 in Sensors
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In nonlinear acoustic measurements involving reflection from the stress-free boundary, the pulse-echo method could not be used because such a boundary is known to destructively change the second harmonic generation (SHG) process. The use of a focusing acoustic beam, however, can improve SHG after reflection from the specimen boundary, and nonlinear pulse-echo methods can be implemented as a practical means of measuring the acoustic nonlinear parameter (β) of solid specimens. This paper investigates the optimal sensor design for pulse-echo SHG and β measurements using Fresnel zone plate (FZP) focused beams. The conceptual design of a sensor configuration uses separate transmission and reception, where a broadband receiver is located at the center and a four-element FZP transmitter is positioned outside the receiver to create a focused beam at the specified position in a solid sample. Comprehensive simulations are performed for focused beam fields analysis and to determine the optimal sensor design using various combinations of focal length, receiver size and frequency. It is shown that the optimally designed sensors for 1 cm thick aluminum can produce the second harmonic amplitude and the uncorrected nonlinear parameter corresponding to the through-transmission method. The sensitivity of the optimal sensors to the changes in the designed sound velocity is analyzed and compared between the odd- and even-type FZPs.

ACS Style

Hyunjo Jeong; Hyojeong Shin; Shuzeng Zhang; Xiongbing Li; Sungjong Cho. Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements. Sensors 2019, 19, 1373 .

AMA Style

Hyunjo Jeong, Hyojeong Shin, Shuzeng Zhang, Xiongbing Li, Sungjong Cho. Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements. Sensors. 2019; 19 (6):1373.

Chicago/Turabian Style

Hyunjo Jeong; Hyojeong Shin; Shuzeng Zhang; Xiongbing Li; Sungjong Cho. 2019. "Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements." Sensors 19, no. 6: 1373.

Journal article
Published: 05 June 2018 in Sensors
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The ultrasonic phased array total focusing method (TFM) has the advantages of full-range dynamic focusing and high imaging resolution, but the problem of long imaging time limits its practically industrial applications. To reduce the imaging calculation demand of TFM, the locations of active array elements in the sparse array are optimized by combining almost different sets with the genetic algorithm (ADSGA), and corrected based on the consistency of the effective aperture with the equivalent point diffusion function. At the same time, to further increase the imaging efficiency, a sparse-TFM image with lower resolution is obtained by reducing the number of focus points and then interpolated by the new edge-directed interpolation algorithm (NEDI) to obtain a high quality sparse-TFM image. Compared with TFM, the experimental results show that the quantitative accuracy of the proposed method is only decreased by 1.09% when the number of sparse transmitting elements reaches 8 for a 32-element transducer, and the imaging speed is improved by about 16 times with the same final pixel resolution.

ACS Style

Hongwei Hu; Jian Du; Chengbao Ye; Xiongbing Li. Ultrasonic Phased Array Sparse-TFM Imaging Based on Sparse Array Optimization and New Edge-Directed Interpolation. Sensors 2018, 18, 1830 .

AMA Style

Hongwei Hu, Jian Du, Chengbao Ye, Xiongbing Li. Ultrasonic Phased Array Sparse-TFM Imaging Based on Sparse Array Optimization and New Edge-Directed Interpolation. Sensors. 2018; 18 (6):1830.

Chicago/Turabian Style

Hongwei Hu; Jian Du; Chengbao Ye; Xiongbing Li. 2018. "Ultrasonic Phased Array Sparse-TFM Imaging Based on Sparse Array Optimization and New Edge-Directed Interpolation." Sensors 18, no. 6: 1830.

Journal article
Published: 09 February 2018 in Coatings
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When magnesium alloys are tested using ultrasonic techniques, their oxide coating will affect the transmitted ultrasonic energy and the accuracy of the flaw sizing. In this work, the effects of the coating thickness on the flaw sizing are investigated. An ultrasonic measurement model is employed to predict the flaw response signal, and the reflected and transmitted ultrasonic energy in the coated surface are corrected by modifying the reflection and transmission coefficients related to the effects of the coating thickness. The effectiveness of these coefficients and the ultrasonic measurement model are verified through experiments. With the correction of the coating thickness effects, the flaw-sizing curves predicted using the ultrasonic measurement model are provided. The flaws in magnesium alloy specimens with different coating thicknesses are tested, and the determined flaw sizes from these curves agree well with the actual sizes, which reveals the effectiveness of the proposed work. This work provides an effective tool to improve the flaw sizing performance using ultrasonic techniques in practical applications.

ACS Style

Xiujuan Miao; Xiongbing Li; Hongwei Hu; Guangjun Gao; Shuzeng Zhang. Effects of the Oxide Coating Thickness on the Small Flaw Sizing Using an Ultrasonic Test Technique. Coatings 2018, 8, 69 .

AMA Style

Xiujuan Miao, Xiongbing Li, Hongwei Hu, Guangjun Gao, Shuzeng Zhang. Effects of the Oxide Coating Thickness on the Small Flaw Sizing Using an Ultrasonic Test Technique. Coatings. 2018; 8 (2):69.

Chicago/Turabian Style

Xiujuan Miao; Xiongbing Li; Hongwei Hu; Guangjun Gao; Shuzeng Zhang. 2018. "Effects of the Oxide Coating Thickness on the Small Flaw Sizing Using an Ultrasonic Test Technique." Coatings 8, no. 2: 69.

Journal article
Published: 16 January 2018 in Measurement
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To improve ultrasonic testing capability for additively manufactured materials, extreme value statistics is employed to calculate the experimental confidence bounds of structural noise, which can be treated as time-dependent thresholds for ultrasonic C-scan image segmentation. A 316L stainless steel sample manufactured by selective laser melting is used for ultrasonic scattering measurements with a focused transducer. Compared with the fixed threshold used in the traditional C-scan image segmentation, the time-dependent threshold can effectively distinguish the flaw echoes from the background of structural noise. The optical microscopy measurement results show that the present method can avoid both missed detections and false positives.

ACS Style

Yongfeng Song; Xuhui Zi; Yingdong Fu; Xiongbing Li; Chao Chen; Kechao Zhou. Nondestructive testing of additively manufactured material based on ultrasonic scattering measurement. Measurement 2018, 118, 105 -112.

AMA Style

Yongfeng Song, Xuhui Zi, Yingdong Fu, Xiongbing Li, Chao Chen, Kechao Zhou. Nondestructive testing of additively manufactured material based on ultrasonic scattering measurement. Measurement. 2018; 118 ():105-112.

Chicago/Turabian Style

Yongfeng Song; Xuhui Zi; Yingdong Fu; Xiongbing Li; Chao Chen; Kechao Zhou. 2018. "Nondestructive testing of additively manufactured material based on ultrasonic scattering measurement." Measurement 118, no. : 105-112.

Journal article
Published: 20 June 2017 in Sensors
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A theoretical model, along with experimental verification, is developed to describe the generation, propagation and reception of a Rayleigh wave using angle beam wedge transducers. The Rayleigh wave generation process using an angle beam wedge transducer is analyzed, and the actual Rayleigh wave sound source distributions are evaluated numerically. Based on the reciprocity theorem and considering the actual sound source, the Rayleigh wave beams are modeled using an area integral method. The leaky Rayleigh wave theory is introduced to investigate the reception of the Rayleigh wave using the angle beam wedge transducers, and the effects of the wave spreading in the wedge and transducer size are considered in the reception process. The effects of attenuations of the Rayleigh wave and leaky Rayleigh wave are discussed, and the received wave results with different sizes of receivers are compared. The experiments are conducted using two angle beam wedge transducers to measure the Rayleigh wave, and the measurement results are compared with the predictions using different theoretical models. It is shown that the proposed model which considers the wave spreading in both the sample and wedges can be used to interpret the measurements reasonably.

ACS Style

Shuzeng Zhang; Xiongbing Li; Hyunjo Jeong. Measurement of Rayleigh Wave Beams Using Angle Beam Wedge Transducers as the Transmitter and Receiver with Consideration of Beam Spreading. Sensors 2017, 17, 1449 .

AMA Style

Shuzeng Zhang, Xiongbing Li, Hyunjo Jeong. Measurement of Rayleigh Wave Beams Using Angle Beam Wedge Transducers as the Transmitter and Receiver with Consideration of Beam Spreading. Sensors. 2017; 17 (6):1449.

Chicago/Turabian Style

Shuzeng Zhang; Xiongbing Li; Hyunjo Jeong. 2017. "Measurement of Rayleigh Wave Beams Using Angle Beam Wedge Transducers as the Transmitter and Receiver with Consideration of Beam Spreading." Sensors 17, no. 6: 1449.