Academic literature on the topic 'Guided ultrasonic waves'

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Journal articles on the topic "Guided ultrasonic waves"

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Peng, Kunhong, Yi Zhang, Xian Xu, Jinsong Han, and Yaozhi Luo. "Crack Detection of Threaded Steel Rods Based on Ultrasonic Guided Waves." Sensors 22, no. 18 (2022): 6885. http://dx.doi.org/10.3390/s22186885.

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Fatigue cracks are typical damage of threaded steel rods under dynamic loads. This paper presents a study on ultrasonic guided waves-based, fatigue-crack detection of threaded rods. A threaded rod with given sizes is theoretically simplified as a cylindrical rod. The propagation characteristics of ultrasonic guided waves in the cylindrical rod are investigated by semi-analytical finite element method and the longitudinal L(0, 1) modal ultrasonic guided waves in low frequency band is proposed for damage detection of the rod. Numerical simulation on the propagation of the proposed ultrasonic gui
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Banerjee, Sourav. "Quantum analogous spin states to explain topological phase for guided waves in ultrasonic nondestructive evaluation." Journal of the Acoustical Society of America 157, no. 4 (2025): 2477–97. https://doi.org/10.1121/10.0036345.

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Spin is a physically observable property that is instrumental for topological behaviors in quantum mechanics. Spin states dictate complex interactions of physical parameters in a topological media during wave propagation. Ultrasonic guided waves are elastic waves that propagate in materials and structures and may also have similar quantum analogous spin states leading to the topological behavior. Traditionally nondestructive evaluation and structural health monitoring use ultrasonic guided waves, but spin states and their topological contributions are not measured or analyzed for damage identi
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Moilanen, Petro. "Ultrasonic guided waves in bone." Journal of the Acoustical Society of America 123, no. 5 (2008): 3631. http://dx.doi.org/10.1121/1.2934867.

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Moilanen, P. "Ultrasonic guided waves in bone." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 55, no. 6 (2008): 1277–86. http://dx.doi.org/10.1109/tuffc.2008.790.

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Zhu, Xin Jie, Zan Dong Han, Dong Du, Yi Fang Chen, and Ke Yi Yuan. "Imaging and Testing of Ultrasonic Sh Guided Waves in Plate with Lap Welding Structure." Advanced Materials Research 301-303 (July 2011): 603–9. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.603.

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The imaging and testing of ultrasonic SH (Shear Horizontal) guided waves may be used into testing and SHM (Structure Health Monitoring) of industrial plate with welding structure in service, which have much more important applied potential. During imaging and testing for steel plate with lap welding structure, photoelastic experiment on propagation of guided waves in Plexiglas plate was studied to clearly see the excellent advantages of SH guided waves. The mode of SH guided waves was analyzed to select the zero order mode SH0 and the SH guided waves transducer with SH0 mode was developed. Bas
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Tanveer, Mohad, Muhammad Umar Elahi, Jaehyun Jung, Muhammad Muzammil Azad, Salman Khalid, and Heung Soo Kim. "Recent Advancements in Guided Ultrasonic Waves for Structural Health Monitoring of Composite Structures." Applied Sciences 14, no. 23 (2024): 11091. http://dx.doi.org/10.3390/app142311091.

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Structural health monitoring (SHM) is essential for ensuring the safety and longevity of laminated composite structures. Their favorable strength-to-weight ratio renders them ideal for the automotive, marine, and aerospace industries. Among various non-destructive testing (NDT) methods, ultrasonic techniques have emerged as robust tools for detecting and characterizing internal flaws in composites, including delaminations, matrix cracks, and fiber breakages. This review concentrates on recent developments in ultrasonic NDT techniques for the SHM of laminated composite structures, with a specia
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Qi, Wei Qiang, Yan Ran Li, Xiao Xin Chen, and Da Peng Duan. "Study of PD Ultrasonic Wave's Properties in Solid Medium." Advanced Materials Research 860-863 (December 2013): 2161–67. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.2161.

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Longitudinal ultrasonic wave signals, transverse ultrasonic wave signals and other ultrasonic body wave signals generated by partial discharge are analyzed emphatically in the acoustic emission method of partial discharge detection in high voltage equipment [1-. Velocity of longitudinal ultrasonic wave is often used to calculate partial discharge defects position in the location study of partial discharge. In practical applications errors are always large. And a recent study finds that a class of plate ultrasonic guided waves will be inspired when ultrasonic body waves are transmitted from the
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Zhu, Xinjie, Sen Yao, Mingxi Deng, Jie Zhang, and Yan Gao. "The Multi-Frame Imaging Detection of Ultrasonic Guided Waves in Welded Structural Plates Based on Arc Sparse Array with Left Rank." Applied Sciences 14, no. 19 (2024): 8981. http://dx.doi.org/10.3390/app14198981.

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The imaging detection of ultrasonic guided waves in plates using arc sparse arrays is highly significant for weld scattering conditions. A novel approach for detecting welded plate structures using the left rank of ultrasonic guided waves in arc sparse arrays was proposed. The relationship between the receiving matrix and the left rank was analyzed, along with the connection between the arc sparse array with the left rank and the receiving aperture. The imaging mechanism of the ultrasonic guided waves in arc sparse arrays with left rank under weld scattering conditions was investigated. The re
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Yu, Shuisheng, Leilei Niu, and Jin Chen. "Experimental and Numerical Studies on Bond Quality of Fully Grouted Rockbolt under Confining Pressure and Pull-Out Load." Shock and Vibration 2022 (August 25, 2022): 1–12. http://dx.doi.org/10.1155/2022/7012510.

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In mining engineering, the in situ stress changes with the stress induced by the surrounding mining activities. It positively or negatively affects the propagation of ultrasonic guided waves in rockbolts. Therefore, the effect of in situ stress in rockbolt support was determined by applying confining pressure and pull-out load in a laboratory test and using ultrasonic guided waves to test the rockbolt. Furthermore, the propagation law of ultrasonic guided waves and bond quality of the rockbolt under the interaction of the pull-out load and confining pressure were studied. Numerical simulations
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Zheng, Zhu Peng, Ying Lei, Xue Peng Cui, and Song Yu. "Non-Destructive Test of the Steel Bar by Using Piezoceramics Sheets." Advanced Materials Research 718-720 (July 2013): 692–97. http://dx.doi.org/10.4028/www.scientific.net/amr.718-720.692.

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Piezoelectric ceramics sheets are used to excite and receive ultrasonic guided waves in a steel bar. The multi-modes and disperse characteristics of guided waves within that are investigated theoretically and experimentally. The results show that ultrasonic guided waves can be generated and received by piezoelectric ceramics sheets which can be used to measure the length of the steel bar and detect the defection in it.
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Dissertations / Theses on the topic "Guided ultrasonic waves"

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Pavlakovic, Brian Nicholas. "Leaky guided ultrasonic waves in NDT." Thesis, Imperial College London, 1998. http://hdl.handle.net/10044/1/7907.

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Bartoli, Ivan. "Structural health monitoring by ultrasonic guided waves." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3283893.

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Thesis (Ph. D.)--University of California, San Diego, 2007.<br>Title from first page of PDF file (viewed December 3, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 311-325).
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Ghandourah, E. I. I. "Large plate monitoring using guided ultrasonic waves." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1463979/.

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Areas of stress concentration around welded structures are likely to lead to fatigue cracks and corrosion pitting during the life time of technical machinery. Performing periodical non-destructive testing of the critical area is crucial for the maintenance of structural integrity and the prevention of unforeseen shutdowns of the system. Low frequency guided ultrasonic waves can propagate along thin structures and allow for the efficient testing of large components. Structural damage can be localized using a distributed array of guided ultrasonic wave sensors. Guided waves might be employed to
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Vallet, Quentin. "Predicting bone strength with ultrasonic guided waves." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066626.

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Cette thèse s'inscrit dans le cadre du développement d'une sonde ultrasonore afin d'obtenir des nouveaux biomarqueurs de l'os cortical et améliorer la prédiction du risque de fracture. Notre approche se base sur la mesure des ondes guidées ultrasonores dans l'os cortical. La technique de transmission axiale bidirectionelle a été utilisée pour mesurer les modes guidées se propageant dans l'enveloppe corticale des os longs (i.e., le radius). Les propriétés matérielles et structurelles liées à la résistance osseuse ont été obtenues à partir des courbes de dispersion en utilisant un schéma d'inver
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Vallet, Quentin. "Predicting bone strength with ultrasonic guided waves." Electronic Thesis or Diss., Paris 6, 2016. http://www.theses.fr/2016PA066626.

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Cette thèse s'inscrit dans le cadre du développement d'une sonde ultrasonore afin d'obtenir des nouveaux biomarqueurs de l'os cortical et améliorer la prédiction du risque de fracture. Notre approche se base sur la mesure des ondes guidées ultrasonores dans l'os cortical. La technique de transmission axiale bidirectionelle a été utilisée pour mesurer les modes guidées se propageant dans l'enveloppe corticale des os longs (i.e., le radius). Les propriétés matérielles et structurelles liées à la résistance osseuse ont été obtenues à partir des courbes de dispersion en utilisant un schéma d'inver
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Valle, Christine. "Guided circumferential waves in annular structures." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/17271.

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Belanger, Pierre. "Feasibility of thickness mapping using ultrasonic guided waves." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/5503.

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Detection and sizing of corrosion in pipelines and pressure vessels over large, partially accessible areas is of growing interest in the petrochemical and nuclear industries. Traditionally, conventional ultrasonic thickness gauging and eddy current techniques have been used to precisely measure the thickness in structures. These techniques only allow the measurement of the local thickness under the probe. Consequently obtaining the remnant thickness of a specimen over a large area requires the probe to be scanned, which is a long and tedious process. Moreover, with these techniques, the scanni
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Buys, B. J. "Rock bolt condition monitoring using ultrasonic guided waves." Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-06222009-135318/.

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Levine, Ross M. "Ultrasonic guided wave imaging via sparse reconstruction." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51829.

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Structural health monitoring (SHM) is concerned with the continuous, long-term assessment of structural integrity. One commonly investigated SHM technique uses guided ultrasonic waves, which travel through the structure and interact with damage. Measured signals are then analyzed in software for detection, estimation, and characterization of damage. One common configuration for such a system uses a spatially-distributed array of fixed piezoelectric transducers, which is inexpensive and can cover large areas. Typically, one or more sets of prerecorded baseline signals are measured when the stru
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Li, Zongbao. "Crack detection in annular components by ultrasonic guided waves." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/15920.

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Books on the topic "Guided ultrasonic waves"

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Huang, Songling, Shen Wang, Weibin Li, and Qing Wang. Electromagnetic Ultrasonic Guided Waves. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0564-0.

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Petrishchev, O. N. Ulʹtrazvukovye magnitostrikt͡s︡ionnye volnovodnye sistemy. Izd-vo pri Kievskom gos. universitete, 1989.

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National Center for Devices and Radiological Health (U.S.). Ultrasonic therapy reporting guide. National Center for Devices and Radiological Health], 1985.

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Huang, Songling, Yu Zhang, Zheng Wei, Shen Wang, and Hongyu Sun. Theory and Methodology of Electromagnetic Ultrasonic Guided Wave Imaging. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-13-8602-2.

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Ultrasonic Guided Waves. MDPI, 2020. http://dx.doi.org/10.3390/books978-3-03928-299-9.

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Lissenden, Cliff. Ultrasonic Guided Waves. Mdpi AG, 2020.

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Wang, Qing, Shen Wang, Songling Huang, and Weibin Li. Electromagnetic Ultrasonic Guided Waves. Springer, 2016.

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Wang, Qing, Shen Wang, Songling Huang, and Weibin Li. Electromagnetic Ultrasonic Guided Waves. Springer, 2018.

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Wang, Qing, Shen Wang, Songling Huang, and Weibin Li. Electromagnetic Ultrasonic Guided Waves. Springer, 2016.

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LISSENDEN. Nonlinear Ultrasonic Guided Waves. Institute of Physics Publishing, 2024.

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Book chapters on the topic "Guided ultrasonic waves"

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Samaitis, Vykintas, Elena Jasiūnienė, Pawel Packo, and Damira Smagulova. "Ultrasonic Methods." In Structural Health Monitoring Damage Detection Systems for Aerospace. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72192-3_5.

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AbstractUltrasonic inspection is a well recognized technique for non-destructive testing of aircraft components. It provides both local highly sensitive inspection in the vicinity of the sensor and long-range structural assessment by means of guided waves. In general, the properties of ultrasonic waves like velocity, attenuation and propagation characteristics such as reflection, transmission and scattering depend on composition and structural integrity of the material. Hence, ultrasonic inspection is commonly used as a primary tool for active inspection of aircraft components such as engine c
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Huang, Songling, Shen Wang, Weibin Li, and Qing Wang. "Finite Element Simulation of Ultrasonic Guided Waves." In Electromagnetic Ultrasonic Guided Waves. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0564-0_6.

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Huang, Songling, Shen Wang, Weibin Li, and Qing Wang. "Applications of the Electromagnetic Ultrasonic Guided Wave Technique." In Electromagnetic Ultrasonic Guided Waves. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0564-0_7.

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Huang, Songling, Shen Wang, Weibin Li, and Qing Wang. "Electromagnetic Acoustic Transducer." In Electromagnetic Ultrasonic Guided Waves. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0564-0_1.

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Huang, Songling, Shen Wang, Weibin Li, and Qing Wang. "Analytical Method of EMAT Based on Lorentz Force Mechanism." In Electromagnetic Ultrasonic Guided Waves. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0564-0_2.

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Huang, Songling, Shen Wang, Weibin Li, and Qing Wang. "Analytical Method of EMAT Based on Magnetostrictive Mechanism." In Electromagnetic Ultrasonic Guided Waves. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0564-0_3.

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Huang, Songling, Shen Wang, Weibin Li, and Qing Wang. "The Propagation Characteristics of Ultrasonic Guided Waves in Plate and Pipe." In Electromagnetic Ultrasonic Guided Waves. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0564-0_4.

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Huang, Songling, Shen Wang, Weibin Li, and Qing Wang. "Simulation of Interactions Between Guided Waves and the Defects by Boundary Element Method." In Electromagnetic Ultrasonic Guided Waves. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0564-0_5.

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Khalil, Abdelgalil, Faeez Masurkar, and A. Abdul-Ameer. "Estimating the Reliability of the Inspection System Employed for Detecting Defects in Rail Track Using Ultrasonic Guided Waves." In BUiD Doctoral Research Conference 2023. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-56121-4_19.

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AbstractThis work focuses on the implementation of a data-based method to determine the inspection system reliability in terms of detecting different types of damages in rail tracks using ultrasonic-guided Rayleigh waves and a probability of detection (POD) technique. In this study, the reliability is tested against a surface crack (SC) and sub-surface damage – a through-side thickness hole (TSTH). The guided Rayleigh waves are generated using a custom-designed sensor that excites Rayleigh surface waves in the specimen and the propagating waves are sensed on the rail track surface. The wedge s
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Lanza di Scalea, Francesco, Ankit Srivastava, and Claudio Nucera. "Nonlinear Guided Waves and Thermal Stresses." In Nonlinear Ultrasonic and Vibro-Acoustical Techniques for Nondestructive Evaluation. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94476-0_9.

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Conference papers on the topic "Guided ultrasonic waves"

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Tang, Xiaoyu, Yunfei Xu, Haoming Xiang, and Wenbin Huang. "Ultrasonic Guided Waves-Enabled Gear Meshing Force Measurement." In 2024 18th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA). IEEE, 2024. https://doi.org/10.1109/spawda63926.2024.10878891.

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Rose, J. L., D. Jiao, S. P. Pelts, J. N. Barshinger, and M. J. Quarry. "Hidden Corrosion Detection with Guided Waves." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97292.

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Abstract A corrosion detection feasibility study with ultrasonic guided waves is presented. Rather than use normal beam ultrasonic techniques that move point by point over the structure being examined, guided waves are more global in nature allowing examination of regions over 2-3 cm on up to 4-5m with reasonable efficiency in corrosion detection and in estimating average wall thickness between the two transducers. A sample problem in aging aircraft inspection for fuselage thinning is studied and used to illustrate the guided wave inspection procedure and potential for classification and sizin
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Rose, Joseph L., Luis E. Soley, Thom Hay, and Vinod S. Agarwala. "Ultrasonic Guided Waves for Hidden Corrosion Detection in Naval Aircraft." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00267.

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Abstract Ultrasonic guided waves are used for the detection of hidden corrosion in such aircraft components as helicopter blades, landing gears, multi-layer components, tear strap and lap splice joints, helicopter transmission beams, and skin to core debonding in honeycomb structures. A new technique of phase velocity and frequency tuning is introduced for optimizing the defect detection process.
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Shen, Yanfeng, Yiran Tian, Hexuan Xu, and Haoyu Fu. "Metamaterial-controlled nonlinear ultrasonic guided waves for structural health monitoring." In Health Monitoring of Structural and Biological Systems XIX, edited by Piervincenzo Rizzo, Zhongqing Su, Fabrizio Ricci, and Kara J. Peters. SPIE, 2025. https://doi.org/10.1117/12.3051051.

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Raghu, Damodaran, Humberto Figueroa, Lee Whittington, and Jim Haupt. "Experience with Torsional Guided Wave Ultrasonic Technique for the Inspection of Offshore Pipeline Installations." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04146.

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Abstract Guided wave ultrasonic testing is fast developing into an efficient screening tool to rapidly inspect long sections (50+ m) of offshore pipelines and risers for corrosion. The technique enables rapid inspection and screening of sections of lines from a single inspection location, like an offshore platform. Over the last year, the authors organization has applied ultrasonic guided waves to the inspection of a variety of offshore and onshore assets through the excitation of a particular wave propagation mode known as the torsional mode. Torsional guided waves were chosen due to its anti
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Jin, Shijiu, Liying Sun, Guichun Liu, Yibo Li, and Hong Zhang. "Study on Ultrasonic Guided Waves in Fluid-Filled Pipes Surrounded by Water." In 2006 International Pipeline Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ipc2006-10493.

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A new non-destructive pipe inspection method, ultrasonic guided wave method as well as the comparison between ultrasonics and guided waves is introduced. An investigation of the guided ultrasonic waves traveling along pipes with fluid loading on the inside and outside of the pipe is described. The effect of inner and outer media has been researched by considering a steel pipe with air and water inside and outside the experimental pipe. Site experiment was carried out on a heating pipe in the resident area of Bohai Oil Company, China. A typical cylindrical guided wave, longitudinal guided wave
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Beard, M. D. "Inspection of rockbolts using guided ultrasonic waves." In The 27th annual review of progress in quantitative nondestructive evaluation. AIP, 2001. http://dx.doi.org/10.1063/1.1373885.

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Pattanayak, Roson Kumar, Krishnan Balasubramaniam, and Prabhu Rajagopal. "Ultrasonic guided waves in eccentric annular pipes." In 40TH ANNUAL REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: Incorporating the 10th International Conference on Barkhausen Noise and Micromagnetic Testing. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4864831.

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Rose, Joseph L. "The upcoming revolution in ultrasonic guided waves." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring. SPIE, 2011. http://dx.doi.org/10.1117/12.897025.

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Kropf, Matthew M., and B. R. Tittmann. "Ultrasonic magnetostrictive transducers for guided ultrasonic waves in thin wires." In The 14th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, edited by Tribikram Kundu. SPIE, 2007. http://dx.doi.org/10.1117/12.715815.

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Reports on the topic "Guided ultrasonic waves"

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Michaels, Jennifer E., Sang J. Lee, Anthony J. Croxford, and Paul D. Wilcox. Chirp Excitation of Ultrasonic Guided Waves (Preprint). Defense Technical Information Center, 2011. http://dx.doi.org/10.21236/ada553286.

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Bunget, Gheorghe, Fritz Friedersdorf, and Jeon-Kwan Na. Quantitative Diagnostics of Multilayered Composite Structures with Ultrasonic Guided Waves. Defense Technical Information Center, 2014. http://dx.doi.org/10.21236/ada615759.

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Matt, Howard M. Structural Diagnostics of CFRP Composite Aircraft Components by Ultrasonic Guided Waves and Built-In Piezoelectric Transducers. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/899976.

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Sriramadasu, Rajeshwara C., Ye Lu, and Sauvik Banerjee. IDENTIFICATION OF PITTING CORROSION IN STEEL BARS AND REBARS EMBEDDED IN CONCRETE USING ULTRASONIC GUIDED WAVES. The Hong Kong Institute of Steel Construction, 2018. http://dx.doi.org/10.18057/icass2018.p.163.

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Li, Yan. Application of ultrasonic guided waves to the characterization of texture in metal sheets of cubic and hexagonal crystallites. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6566168.

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Nestleroth. L52298 Augmenting MFL Tools With Sensors that Assess Coating Condition. Pipeline Research Council International, Inc. (PRCI), 2009. http://dx.doi.org/10.55274/r0010396.

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External coatings are routinely used to protect transmission pipelines from corrosion; however, coatings may degrade or disbond over time enabling corrosion to occur. Transmission pipeline operators often use magnetic flux leakage (MFL) in-line inspection tools to detect metal loss corrosion defects. Rather than finding the cause of a problem, failure of the coating within a corrosive environment, MFL corrosion surveys only find the result of the problem, corrosion defects that may permanently alter the pressure carrying capacity of the pipeline. Stress corrosion cracking (SCC) can be detected
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Gribok, Andrei V. Performance of Advanced Signal Processing and Pattern Recognition Algorithms Using Raw Data from Ultrasonic Guided Waves and Fiber Optics Transducers. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1495185.

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Ray, Jason, and Clayton Thurmer. 2020 guided wave inspection of California Department of Water Resources tainter gate post-tensioned trunnion anchor rods : Oroville Dam. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/43762.

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The Engineering and Test Branch within the Division of Operations and Maintenance of the California Department of Water Resources (DWR) and U.S. Army Corps of Engineers (USACE), Sacramento District, tasked the Sensor Integration Branch (SIB) at the Engineer Research and Develop-ment Center (ERDC) to perform non-destructive testing (NDT) on the trunnion anchor rods at Oroville Dam through the use of ultrasonic guided waves. This is the third year of this NDT. The results of the testing are presented along with qualitative analysis in determining whether a rod is in-tact or compromised. Analysis
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Ray, Jason D., and Clayton R. Thurmer. 2021 Guided Wave Inspection of California Department of Water Resources Tainter Gate Post-Tensioned Trunnion Anchor Rods: Oroville Dam. U.S. Army Engineer Research and Development Center, 2022. http://dx.doi.org/10.21079/11681/46282.

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Abstract:
The Engineering and Test Branch within the Division of Operations and Maintenance of the California Department of Water Resources (DWR) and U.S. Army Corps of Engineers (USACE), Sacramento District, tasked the Sensor Integration Branch (SIB) at the Engineer Research and Development Center (ERDC) to perform nondestructive testing (NDT) on the trunnion anchor rods at Oroville Dam through the use of ultrasonic guided waves. This is the fourth year of this NDT. The results of the testing are presented along with qualitative analysis in determining whether a rod is intact or compromised. Analysis i
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Zhao, George, Grang Mei, Bulent Ayhan, Chiman Kwan, and Venu Varma. DTRS57-04-C-10053 Wave Electromagnetic Acoustic Transducer for ILI of Pipelines. Pipeline Research Council International, Inc. (PRCI), 2005. http://dx.doi.org/10.55274/r0012049.

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Abstract:
In this project, Intelligent Automation, Incorporated (IAI) and Oak Ridge National Lab (ORNL) propose a novel and integrated approach to inspect the mechanical dents and metal loss in pipelines. It combines the state-of-the-art SH wave Electromagnetic Acoustic Transducer (EMAT) technique, through detailed numerical modeling, data collection instrumentation, and advanced signal processing and pattern classifications, to detect and characterize mechanical defects in the underground pipeline transportation infrastructures. The technique has four components: (1) thorough guided wave modal analysis
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