Multifrequency Identification and Exploitation in Lamb Wave Inspection

Wang, Zhe; Huang, Songling; Wang, Shen; Wang, Qing; Zhao, Wei

doi:10.1109/access.2019.2947711

Computationally Modelling the Use of Nanotechnology to Enhance the Performance of Thermoelectric Materials (2020)
Journal Article
Spriggs, P., & Wang, Q. (2020). Computationally Modelling the Use of Nanotechnology to Enhance the Performance of Thermoelectric Materials. Energies, 13(19), Article 5096. https://doi.org/10.3390/en13195096

The increased focus on global climate change has meant that the thermoelectric market has received considerably more attention. There are many processes producing large amounts of waste heat that can be utilised to generate electrical energy. Thermoe... Read More about Computationally Modelling the Use of Nanotechnology to Enhance the Performance of Thermoelectric Materials.

3D focusing acoustic lens optimization method using multi-factor and multi-level orthogonal test designing theory (2020)
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Sun, H., Wang, S., Huang, S., Peng, L., Wang, Q., Zhao, W., & Zou, J. (2020). 3D focusing acoustic lens optimization method using multi-factor and multi-level orthogonal test designing theory. Applied Acoustics, 170, Article 107538. https://doi.org/10.1016/j.apacoust.2020.107538

Focusing systems that consist of acoustic lenses exhibit higher controllability and focusing intensity when manipulating sound waves. Different parameters have different effects on the performance of the acoustic lens, so analyzing a variety of param... Read More about 3D focusing acoustic lens optimization method using multi-factor and multi-level orthogonal test designing theory.

From μ0 to e: A Survey of Major Impacts for Electrical Measurements in Recent SI Revision (2020)
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Li, S., Wang, Q., Zhao, W., & Huang, S. (2020). From μ0 to e: A Survey of Major Impacts for Electrical Measurements in Recent SI Revision. IEEE Transactions on Instrumentation and Measurement, 69(9), 5956-5965. https://doi.org/10.1109/tim.2020.3010351

A milestone revision of the International System of Units (SI) was made at the 26th General Conference on Weights and Measures that four of the seven SI base units, i.e., kilogram, ampere, kelvin, and mole, are redefined by fundamental physical const... Read More about From μ0 to e: A Survey of Major Impacts for Electrical Measurements in Recent SI Revision.

Orthogonal Optimal Design Method for Point-Focusing EMAT Considering Focal Area Dimensions (2020)
Journal Article
Sun, H., Huang, S., Wang, Q., Wang, S., & Zhao, W. (2020). Orthogonal Optimal Design Method for Point-Focusing EMAT Considering Focal Area Dimensions. Sensors and Actuators A: Physical, 312, Article 112109. https://doi.org/10.1016/j.sna.2020.112109

Although ultrasonic focusing methods have been widely used in electromagnetic acoustic transducers (EMATs) to solve the problem of their low energy conversion efficiency, the influence of focusing accuracy on defect identification also warrants consi... Read More about Orthogonal Optimal Design Method for Point-Focusing EMAT Considering Focal Area Dimensions.

Investigation on strengthening and toughening mechanisms of Nb-Ti-ZrB2 metal matrix ceramic composites reinforced with in situ niobium and titanium boride (2020)
Journal Article
Gao, Y., Liu, Z., Wang, Q., Liu, C., & Sun, Y. (2020). Investigation on strengthening and toughening mechanisms of Nb-Ti-ZrB2 metal matrix ceramic composites reinforced with in situ niobium and titanium boride. International Journal of Refractory Metals and Hard Materials, 92, Article 105282. https://doi.org/10.1016/j.ijrmhm.2020.105282

Nb-Ti-ZrB2 metal matrix ceramic composites with a fixed atomic ratio Nb/Ti = 2/1 and ZrB2 volume fraction changing from 0, 11 vol%, 23 vol% to 36 vol% were hot pressed at 1600 °C under 30 MPa. The influence of ZrB2 content and Ti addition on the phas... Read More about Investigation on strengthening and toughening mechanisms of Nb-Ti-ZrB2 metal matrix ceramic composites reinforced with in situ niobium and titanium boride.

A Damage Localization Method With Multimodal Lamb Wave Based on Adaptive Polynomial Chirplet Transform (2020)
Journal Article
Wang, Z., Huang, S., Wang, S., Wang, Q., & Zhao, W. (2020). A Damage Localization Method With Multimodal Lamb Wave Based on Adaptive Polynomial Chirplet Transform. IEEE Transactions on Instrumentation and Measurement, 69(10), 8076-8087. https://doi.org/10.1109/tim.2020.2993342

Ultrasonic Lamb wave testing allows health monitoring for plate structures and has been extensively applied in the modern industry. To obtain the location and further form the damage imaging, the time of flight (TOF) is a pivotal parameter. However,... Read More about A Damage Localization Method With Multimodal Lamb Wave Based on Adaptive Polynomial Chirplet Transform.

Development of a Helical Lamb Wave Electromagnetic Acoustic Transducer for Pipeline Inspection (2020)
Journal Article
Wang, Z., Wang, S., Wang, Q., Zhao, W., & Huang, S. (2020). Development of a Helical Lamb Wave Electromagnetic Acoustic Transducer for Pipeline Inspection. IEEE Sensors Journal, 20(17), 9715-9723. https://doi.org/10.1109/jsen.2020.2990795

The electromagnetic ultrasonic testing presents great potential in structural health monitoring due to its non-contact advantage. The electromagnetic acoustic transducers generating torsional and longitudinal guided wave have been extensively studied... Read More about Development of a Helical Lamb Wave Electromagnetic Acoustic Transducer for Pipeline Inspection.

Numerical modelling of unilateral point-focusing electromagnetic acoustic transducer with experimental validation (2020)
Journal Article
Sun, H., Wang, S., Huang, S., Wang, Q., & Zhao, W. (2020). Numerical modelling of unilateral point-focusing electromagnetic acoustic transducer with experimental validation. International Journal of Applied Electromagnetics and Mechanics, 62(4), 645-662. https://doi.org/10.3233/jae-190071

Electromagnetic ultrasonic testing, based on the propagation characteristics of the ultrasonic wave in the medium, is an effective technique for defect detection. The structural of the electromagnetic acoustic transducer (EMAT) determines the detecti... Read More about Numerical modelling of unilateral point-focusing electromagnetic acoustic transducer with experimental validation.

A Simple Improvement for Permanent Magnet Systems for Kibble Balances: More Flat Field at Almost No Cost (2020)
Journal Article
Li, S., Schlamminger, S., & Wang, Q. (2020). A Simple Improvement for Permanent Magnet Systems for Kibble Balances: More Flat Field at Almost No Cost. IEEE Transactions on Instrumentation and Measurement, 69(10), 7752-7760. https://doi.org/10.1109/tim.2020.2981983

Permanent magnets together with yokes to concentrate the magnetic flux into a cylindrical air gap are widely employed in Kibble balances. These experiments require a uniform magnetic flux density along a vertical path, typically a substantial fractio... Read More about A Simple Improvement for Permanent Magnet Systems for Kibble Balances: More Flat Field at Almost No Cost.

Oblique Point-Focusing Shear-Horizontal Guided-Wave Electromagnetic Acoustic Transducer With Variable PPM Spacing (2020)
Journal Article
Sun, H., Wang, S., Huang, S., Peng, L., Wang, Q., & Zhao, W. (2020). Oblique Point-Focusing Shear-Horizontal Guided-Wave Electromagnetic Acoustic Transducer With Variable PPM Spacing. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 67(8), 1691-1700. https://doi.org/10.1109/tuffc.2020.2980621

We realized a phase-coherent oblique point-focusing shear-horizontal (SH) guided-wave electro- magnetic acoustic transducer (EMAT) composed of variable-spacing periodic permanent magnets (PPMs) and racetrack coils. For traditional focusing transducer... Read More about Oblique Point-Focusing Shear-Horizontal Guided-Wave Electromagnetic Acoustic Transducer With Variable PPM Spacing.

One-step synthesis of sandwich-type Cu/graphene/Cu ultrathin foil with enhanced property via electrochemical route (2020)
Journal Article
Song, G., Wang, Q., Sun, L., Li, S., Sun, Y., Fu, Q., & Pan, C. (2020). One-step synthesis of sandwich-type Cu/graphene/Cu ultrathin foil with enhanced property via electrochemical route. Materials & Design, 191, Article 108629. https://doi.org/10.1016/j.matdes.2020.108629

A layered structure has a better effect on improving performance of the graphene-reinforced composites due to its unique two-dimensional structure and excellent properties. In this paper, a novel “one-step” electrochemical route was proposed for synt... Read More about One-step synthesis of sandwich-type Cu/graphene/Cu ultrathin foil with enhanced property via electrochemical route.

Design of Electromagnetic Acoustic Transducer for Helical Lamb Wave With Concentrated Beam (2020)
Journal Article
Wang, Z., Huang, S., Wang, S., Wang, Q., & Zhao, W. (2020). Design of Electromagnetic Acoustic Transducer for Helical Lamb Wave With Concentrated Beam. IEEE Sensors Journal, 20(12), 6305-6313. https://doi.org/10.1109/jsen.2020.2976512

Guided wave is advantageous to inspect pipe-like structures because of its long-distance propagation. Due to the curved structure of pipeline, guided wave can spread spirally with a helix angle. However, the current transducers focus more on the narr... Read More about Design of Electromagnetic Acoustic Transducer for Helical Lamb Wave With Concentrated Beam.

Point-Focusing Shear-Horizontal Guided Wave EMAT Optimization Method Using Orthogonal Test Theory (2020)
Journal Article
Sun, H., Wang, S., Huang, S., Peng, L., Wang, Q., Zhao, W., & Zou, J. (2020). Point-Focusing Shear-Horizontal Guided Wave EMAT Optimization Method Using Orthogonal Test Theory. IEEE Sensors Journal, 20(12), 6295-6304. https://doi.org/10.1109/jsen.2020.2976198

As a class of devices used in sound detection, electromagnetic acoustic transducers (EMATs) have been widely used in the field of nondestructive testing (NDT) owing to their advantages such as contact-free operation, wide applicability, and high perf... Read More about Point-Focusing Shear-Horizontal Guided Wave EMAT Optimization Method Using Orthogonal Test Theory.

A solution to the parameter selection and current static error issues with frequency shift islanding detection methods (2020)
Journal Article
Liu, M., Zhao, W., Wang, Q., Huang, S., & Shi, K. (2020). A solution to the parameter selection and current static error issues with frequency shift islanding detection methods. IEEE Transactions on Industrial Electronics, 68(2), 1401-1411. https://doi.org/10.1109/tie.2020.2970684

Frequency shift islanding detection methods have been widely used in inverter-based distributed generations. Two representatives of such methods, Sandia frequency shift (SFS) and reactive current perturbation (RCP) methods, are investigated in this p... Read More about A solution to the parameter selection and current static error issues with frequency shift islanding detection methods.

Design and characterization of an acoustic composite lens with high-intensity and directionally controllable focusing (2020)
Journal Article
Sun, H., Wang, S., Huang, S., Peng, L., Wang, Q., & Zhao, W. (2020). Design and characterization of an acoustic composite lens with high-intensity and directionally controllable focusing. Scientific Reports, 10(1), Article 1469. https://doi.org/10.1038/s41598-020-58092-6

Acoustic orientation and bunching methods, which include the radiation surface expansion, ultrasonic demodulation, multiunit coherence, phased arrays and acoustic lenses, can be used to manipulate and focus sound waves. Recently, focusing systems com... Read More about Design and characterization of an acoustic composite lens with high-intensity and directionally controllable focusing.

Power Measurement Accuracy Analysis in the Presence of Interharmonics (2020)
Journal Article
Yu, Y., Zhao, W., Chen, L., Wang, Q., & Huang, S. (2020). Power Measurement Accuracy Analysis in the Presence of Interharmonics. Measurement, 154, Article 107484. https://doi.org/10.1016/j.measurement.2020.107484

Interharmonics present in voltage/current signals affect the measurement accuracy of power quantities defined in standard IEEE 1459. In this paper, the measurement errors caused by the measurement time intervals not satisfying integral multiple perio... Read More about Power Measurement Accuracy Analysis in the Presence of Interharmonics.

Characteristics of T(0, 1) Guided-Wave Point-Focusing Electromagnetic Acoustic Transducer for Pipe Inspection (2019)
Journal Article
Huang, S., Sun, H., Shen, G., Wang, B., Wang, Q., Zou, J., & Wang, S. (2020). Characteristics of T(0, 1) Guided-Wave Point-Focusing Electromagnetic Acoustic Transducer for Pipe Inspection. IEEE Sensors Journal, 20(6), 2895-2903. https://doi.org/10.1109/jsen.2019.2958953

Electromagnetic acoustic transducers (EMATs) are widely used in the field of non-destructive testing (NDT) and non-destructive evaluation (NDE) due to their advantages of non-contact and applicability in complex environments. However, their low energ... Read More about Characteristics of T(0, 1) Guided-Wave Point-Focusing Electromagnetic Acoustic Transducer for Pipe Inspection.

Numerical evaluation of focal position selection by line-focusing electromagnetic acoustic transducer with experimental validation (2019)
Journal Article
Huang, S., Sun, H., Wang, S., Wang, Q., & Zhao, W. (2019). Numerical evaluation of focal position selection by line-focusing electromagnetic acoustic transducer with experimental validation. International Journal of Applied Electromagnetics and Mechanics, 61(3), 341-355. https://doi.org/10.3233/jae-190021

As the focal position of a line-focusing electromagnetic acoustic transducer (LF-EMAT) affects the intensity of the focal signal, we measure the displacement signal and the selection method of the focal line position is then studied in this work to i... Read More about Numerical evaluation of focal position selection by line-focusing electromagnetic acoustic transducer with experimental validation.

Compressed Sensing Method for Health Monitoring of Pipelines Based on Guided Wave Inspection (2019)
Journal Article
Wang, Z., Huang, S., Wang, S., Zhuang, S., Wang, Q., & Zhao, W. (2020). Compressed Sensing Method for Health Monitoring of Pipelines Based on Guided Wave Inspection. IEEE Transactions on Instrumentation and Measurement, 69(7), 4722-4731. https://doi.org/10.1109/tim.2019.2951891

The pipeline in-service needs to be inspected in a certain period to master its structural health status. An ultrasonic guided wave, which can propagate along pipelines with less energy loss, provides an efficient method for long-term in situ inspect... Read More about Compressed Sensing Method for Health Monitoring of Pipelines Based on Guided Wave Inspection.

Multifrequency Identification and Exploitation in Lamb Wave Inspection (2019)
Journal Article
Wang, Z., Huang, S., Wang, S., Wang, Q., & Zhao, W. (2019). Multifrequency Identification and Exploitation in Lamb Wave Inspection. IEEE Access, 7, 150435-150443. https://doi.org/10.1109/access.2019.2947711

Lamb wave inspection provides a promising method to assess the structural health status. However, Lamb wave modes exhibit different characteristics which vary with frequency significantly. The best excitation frequency usually cannot be determined in... Read More about Multifrequency Identification and Exploitation in Lamb Wave Inspection.

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