Results 281 to 290 of about 145,304 (328)
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Periodical Focusing Phenomenon of Ultrasonic Guided Waves in Pipes
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2022We put forward a focusing formula to describe the guided waves periodical focusing phenomenon, which, apart from being a fundamental problem in the guided waves' propagation in the pipes, has essential applications in the field of nondestructive evaluation.
Yunfei Zhang, Bing Li, Jiaqi Wang
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A review on ultrasonic guided wave technology
Australian Journal of Mechanical Engineering, 2017AbstractThis paper will provide some understanding on the Guided Wave Technology (GWT). Prior to the review of GWT, the authors will be providing some introduction on brief history of guided wave, basic physics on ultrasonic including on modes of wave propagation, operation principle of piezoelectric, Magnetostrictive, Electromagnetic Acoustic ...
Ling, E. H., Abdul Rahim, R. H.
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Detection of broken wires in elevator wire ropes with ultrasonic guided waves and tone-burst wavelet
Structural Health Monitoring, 2020Elevator wire ropes with polymer cores hold and hoist heavy fluctuating loads in a corrosive environment. Such working condition causes metal fatigue, which together with abrasion around pulleys leads to progressive loss of the metallic cross section ...
J. Rostami, P. Tse, Maodan Yuan
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Ultrasonics
Thin-walled metallic structures produced by the Directed Energy Deposition (DED) Additive Manufacturing (AM) process are prone to various fabrication defects, which hinder the wider applications of the technique in practice.
Fuzhen Wen +3 more
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Thin-walled metallic structures produced by the Directed Energy Deposition (DED) Additive Manufacturing (AM) process are prone to various fabrication defects, which hinder the wider applications of the technique in practice.
Fuzhen Wen +3 more
semanticscholar +1 more source
Ultrasonic guided wave tomography of pipes
2010 International Conference on Audio, Language and Image Processing, 2010Ultrasonic guided wave tomography has been shown to be an effective nondestructive evaluation technique for pipe-like structures. Guided waves propagating in pipe with damage are simulated using the finite element and the first arrival times of the received signals are extracted as input data of tomography.
Zhang Haiyan +3 more
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Ice detection by ultrasonic guided waves
CEAS Aeronautical Journal, 2018This paper describes a method for inflight ice detection using ultrasonic guided waves that is little studied until now. Unlike existing systems, the proposed method can immediately detect icing at the place of formation. The detection area can also include whole structural segments and the proposed sensor can be integrated into a wing structure ...
Mendig, Christian +5 more
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The Electromagnetic Ultrasonic Guided Wave Testing
2016As an important branch of the nondestructive testing field, ultrasonic testing is widely used in the steel, electric power, petroleum, transportation, and medical and other industries. In the process of ultrasonic testing, the ultrasonic transducer is the core component of excitation and reception of ultrasonic waves, mainly including the piezoelectric
Songling Huang, Shen Wang
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Ultrasonics, 2020
Hidden corrosion damage of aircraft structures is a potential threat to the flight safety and a major maintenance factor for aircraft. In previous researches on corrosion detection, the local wavenumber estimation is obtained from a sliding wavenumber ...
Tianfang Gao +3 more
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Hidden corrosion damage of aircraft structures is a potential threat to the flight safety and a major maintenance factor for aircraft. In previous researches on corrosion detection, the local wavenumber estimation is obtained from a sliding wavenumber ...
Tianfang Gao +3 more
semanticscholar +1 more source
Guided Wave Electromagnetic Ultrasonic Tomography
2019The defect of the aluminum plate concerned in this chapter is mainly the plate thickness loss-type defect caused by corrosion, and the plate thickness change caused by such defects is relatively flat. When Lamb waves encounter such defects, the amplitudes of other modal waves generated by modal transformation are relatively small.
Songling Huang +4 more
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Deep Learning Analysis of Ultrasonic Guided Waves for Cortical Bone Characterization
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2020Ultrasonic guided waves (UGWs) propagating in the long cortical bone can be measured via the axial transmission method. The characterization of long cortical bone using UGW is a multiparameter inverse problem.
Yifang Li +5 more
semanticscholar +1 more source