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Literatura académica sobre el tema "Guided ultrasonic waves"

Autor: Grafiati

Publicado: 10 de mayo de 2025

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Artículos de revistas sobre el tema "Guided ultrasonic waves"

Moilanen, Petro. "Ultrasonic guided waves in bone". Journal of the Acoustical Society of America 123, n.º 5 (mayo de 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, n.º 6 (junio de 2008): 1277–86. http://dx.doi.org/10.1109/tuffc.2008.790.

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Peng, Kunhong, Yi Zhang, Xian Xu, Jinsong Han y Yaozhi Luo. "Crack Detection of Threaded Steel Rods Based on Ultrasonic Guided Waves". Sensors 22, n.º 18 (12 de septiembre de 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 guided waves in the threaded rod without damage shows that the thread causes echoes of the ultrasonic guided waves. A numerical study on the propagation of the proposed ultrasonic guided waves in the threaded rod with a crack on the intersection of the smooth segment and the threaded segment shows that both linear indexes (Rf and ARS) and nonlinear indexes (βre′ and β′) are able to detect the crack. A constant-amplitude tensile fatigue experiment was conducted on a specimen of the threaded rod to generate fatigue cracks in the specimen. After every 20,000 loading cycles, the specimen was tested by the proposed ultrasonic guided waves and evaluated by the linear indexes and nonlinear indexes. Experimental results show that both the linear and nonlinear indexes of the ultrasonic guided waves are able to identify the crack before it enters the rapid growth stage and the nonlinear indexes detect the crack easier than the linear indexes.

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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, n.º 4 (1 de abril de 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 identification and localization. In this article, the elastic spin state that naturally manifests by the ultrasonic guided waves in an elastic wave guide is explained through quantum analogous derivation. Starting from the fundamentals of Noerther's conservation theorem total angular momentum of guided wave modes is derived. It is shown that even without geometric periodicity guided waves could still have the nonzero spin angular momentum (SAM) density, which may appear from 14 different unique interactions of guided wave potentials. Based on SAM densities spin–orbit interactions in a plate like wave guide is demonstrated where artificially through active actuation, anticlockwise and clockwise spins were created. Further spin states that eventually affect the topological phase is explained through a simulated experiment.

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Zhu, Xin Jie, Zan Dong Han, Dong Du, Yi Fang Chen y Ke Yi Yuan. "Imaging and Testing of Ultrasonic Sh Guided Waves in Plate with Lap Welding Structure". Advanced Materials Research 301-303 (julio de 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. Based on the synthetic aperture focusing method，a multichannel ultrasonic imaging and testing experimental system of ultrasonic SH guided waves was constructed，the imaging of plate with lap welding structure was mainly studied. The research results shows the ultrasonic SH guided waves and the transducers are fit for long distance testing for the plate with lap welding structure. The ultrasound scattering nearby the weld may cause a blind testing zone, about 150 mm wide, in which the less size corrosion defects at the blind zone could not be revealed in image, so as to lead to defects “no testing”. The imaging and testing of ultrasonic SH guided waves would be used for non-destructive testing of plate with lap welding structure, which image both can characterize the corrosion defects and lap welding structure, and realize the precise location of the weld. The proposed research provides important foundation for improving ultrasonic guided waves imaging and testing quality and SHM of industrial in-site plate with lap welding and larger size.

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Tanveer, Mohad, Muhammad Umar Elahi, Jaehyun Jung, Muhammad Muzammil Azad, Salman Khalid y Heung Soo Kim. "Recent Advancements in Guided Ultrasonic Waves for Structural Health Monitoring of Composite Structures". Applied Sciences 14, n.º 23 (28 de noviembre de 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 special focus on guided wave methods. We delve into the fundamental principles of ultrasonic testing in composites and review cutting-edge techniques such as phased array ultrasonics, laser ultrasonics, and nonlinear ultrasonic methods. The review also discusses emerging trends in data analysis, particularly the integration of machine learning and artificial intelligence for enhanced defect detection and characterization through guided waves. This review outlines the current and anticipated trends in ultrasonic NDT for SHM in composites, aiming to aid researchers and practitioners in developing more effective monitoring strategies for laminated composite structures.

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Qi, Wei Qiang, Yan Ran Li, Xiao Xin Chen y Da Peng Duan. "Study of PD Ultrasonic Wave's Properties in Solid Medium". Advanced Materials Research 860-863 (diciembre de 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 gaseous medium to the metal medium [9-1. As the attenuation coefficient is small and the transmission distance is large when the waves propagate along the metal plate, in the partial discharge detection, ultrasonic signals detected by the ultrasonic sensor attached to the equipment enclosure include ultrasonic guided waves besides the ultrasonic body waves.

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Michaels, Jennifer E., Sang Jun Lee, Anthony J. Croxford y Paul D. Wilcox. "Chirp excitation of ultrasonic guided waves". Ultrasonics 53, n.º 1 (enero de 2013): 265–70. http://dx.doi.org/10.1016/j.ultras.2012.06.010.

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Mendig, C., J. Riemenschneider, H. P. Monner, L. J. Vier, M. Endres y Hannah Sommerwerk. "Ice detection by ultrasonic guided waves". CEAS Aeronautical Journal 9, n.º 3 (9 de marzo de 2018): 405–15. http://dx.doi.org/10.1007/s13272-018-0289-0.

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Honarvar, F., E. Enjilela y A. N. Sinclair. "Guided ultrasonic waves in composite cylinders". Mechanics of Composite Materials 43, n.º 3 (mayo de 2007): 277–88. http://dx.doi.org/10.1007/s11029-007-0027-x.

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Tesis sobre el tema "Guided ultrasonic waves"

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.
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 overcome the accessibility problem for stiffened plate structures where access to some parts of the inspected structure is not possible. The transmission and reflection of the A0 Lamb wave mode for a variation of the stiffener geometry and excitation frequency was investigated numerically and verified experimentally. The dispersive behaviour of the guided waves has been studied to ascertain a frequency thickness product that provides limited pulse distortion. The limitations of the plate geometry as well as the excitation and monitoring locations were discussed. The radial spreading of the incident, transmitted and reflected waves from a stiffener has been investigated. The efficient quantification of the transmitted and reflected waves from the stiffener for a wide range of angles has been obtained from a single Finite Element model containing two parallel lines of nodes in front of and past the stiffener. The research outcomes have shown the dependency of the scattered wave on the incident angle and stiffener dimensions. Reasonably good A0 wave mode transmission was obtained from the oblique wave propagation (up to an angle of 45o) across realistic stiffener geometries. The choice of an optimum excitation frequency, which can ensure maximum transmission across the stiffener for specific plate geometry, was recommended. The ability for defect detection in inaccessible areas has been investigated numerically and validated experimentally. The possibility of detecting and characterizing the reflection of a guided wave pulse (A0 mode) from a through-thickness notch located behind the stiffener has been discussed. Two different approaches, based on the access to the sides of the stiffener on the plate, were employed. The limitations of the detectable defect size and location behind the stiffener have been investigated. The energy of the transmitted wave across the stiffener was adequate to detect simulated damage behind the stiffener. The evaluation has shown that defect detection in inaccessible areas behind stiffeners is achievable if the signal-to-noise ratio is high enough. In experimental measurements the noise level was of similar magnitude to the observed reflections at the defect. Thus, there is necessity to enhance the signal-to-noise ratio in experimental measurements.

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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'inversion. Ainsi, un problème inverse totalement automatique, basé sur une optimisation par algorithmes génétiques et un modèle 2D de plaque libre transverse isotrope, a été développé. Cette procédure d'inversion a d'abord été testée sur des matériaux contrôlés avec des propriétés connues. Puis, la faisabilité d'obtenir des propriétés corticales sur des radii ex vivo a été montrée. Ces estimations ont été validées par comparaison avec des valeurs de référence obtenues avec des techniques indépendantes telles que la micro-tomodensitométrie par rayons X (épaisseur, porosité) et la spectroscopie par résonance ultrasonore (élasticité). Un bon accord a été trouvé entre les valeurs de référence et les estimations d'épaisseur, de porosité et d'élasticité. Enfin, la méthode a été étendue à des mesures in vivo. La validité du modèle en présence de tissus mous a d'abord été démontrée. Puis, les propriétés osseuses ont été obtenues sur des sujets sains. Un bon accord a été trouvé entre l'épaisseur estimée et les valeurs de référence obtenues par tomodensitométrie périphérique haute résolution
We aimed at developing new ultrasound-based biomarkers of cortical bone to enhance fracture risk prediction in osteoporosis. Our approach was based on the original concept of measuring ultrasonic guided waves in cortical bone. The bi-directional axial transmission technique was used to measure the guided modes propagating in the cortical envelope of long bones (i.e., the radius). Strength-related structural and material properties of bone were recovered from the dispersion curves through an inversion scheme. To this goal, a fully automatic inverse problem based on genetic algorithms optimization, using a 2-D transverse isotropic free plate waveguide model was developed. The proposed inverse procedure was first tested on laboratory-controlled measurements performed on academic samples with known properties. Then, the feasibility of estimating cortical properties of ex vivo radius specimens was assessed. The inferred bone properties were validated by face-to-face comparison with reference values determined by a set of independent state-of-the art technologies, including X-ray micro-computed tomography (thickness, porosity) and resonance ultrasound spectroscopy (stiffness). A good agreement was found between reference values and estimates of thickness, porosity and stiffness. Lastly, the method was extended to in vivo measurements, first, by ensuring the validity of the waveguide model in presence of soft tissues to demonstrate the feasibility of measuring experimental dispersion curves in vivo and infer from them bone properties. Estimated cortical thickness values were consistent with actual values derived from high resolution peripheral computed tomography

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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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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 scanning may become impossible when the area of inspection is inaccessible. There is therefore a need for a rapid, accurate, long range inspection technique to measure the remaining thickness in corrosion patches. Low frequency guided waves are now routinely used to screen large area of pipes and other structures for cracks and corrosion. Their detection and location capability is very good, but the standard screening technique only gives a rough estimate of the remaining wall thickness. Guided waves have multiple properties which can be used for thickness mapping over large partially accessible areas e.g. dispersion and cutoff frequency thickness product of the high order modes. The present work aims to demonstrate the potential of guided waves for thickness mapping over large partially accessible areas. It starts with a general introduction on ultrasonic guided waves and a literature review of the different techniques for the evaluation of thickness with guided waves. The severity of the errors introduced in time-of-flight tomography for thickness reconstruction by breaking the assumption of the ray theory are investigated. As these errors are significant, the possibility of using the cutoff property of the high order modes is investigated in a frequency range where the ray theory is valid. It is found that the attenuation due to the scattering of the waves in corrosion is too large for this technique to work. Finally the use of low frequency guided wave for diffraction tomography is examined. Finite element simulations of a 64 element circular array on a plate show that when the scattering mechanism of the object to be reconstructed satisfies the Born approximation the reconstruction of the thickness is accurate. However the practical implementation is more challenging when the incident field is not known. Experimental results demonstrate that ultimately the scattering from the array of transducer is a major source of error in the tomographic reconstruction, but when there is no scattering from the array of transducers the reconstructions are very similar to the finite element simulations.

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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 structure is in a known state, with imaging methods operating on differences between follow-up measurements and these baselines. Presented here is a new class of SHM spatially-distributed array algorithms that rely on sparse reconstruction. For this problem, damage over a region of interest (ROI) is considered to be sparse. Two different techniques are demonstrated here. The first, which relies on sparse reconstruction, uses an a priori assumption of scattering behavior to generate a redundant dictionary where each column corresponds to a pixel in the ROI. The second method extends this concept by using multidimensional models for each pixel, with each pixel corresponding to a "block" in the dictionary matrix; this method does not require advance knowledge of scattering behavior. Analysis and experimental results presented demonstrate the validity of the sparsity assumption. Experiments show that images generated with sparse methods are superior to those created with delay-and-sum methods; the techniques here are shown to be tolerant of propagation model mismatch. The block-sparse method described here also allows the extraction of scattering patterns, which can be used for damage characterization.

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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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Libros sobre el tema "Guided ultrasonic waves"

Huang, Songling, Shen Wang, Weibin Li y Qing Wang. Electromagnetic Ultrasonic Guided Waves. Singapore: 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. Kiev: Izd-vo pri Kievskom gos. universitete, 1989.

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National Center for Devices and Radiological Health (U.S.). Ultrasonic therapy reporting guide. [Washington, D.C.?: National Center for Devices and Radiological Health], 1985.

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Huang, Songling, Yu Zhang, Zheng Wei, Shen Wang y Hongyu Sun. Theory and Methodology of Electromagnetic Ultrasonic Guided Wave Imaging. Singapore: 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 y Weibin Li. Electromagnetic Ultrasonic Guided Waves. Springer, 2016.

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

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Wang, Qing, Shen Wang, Songling Huang y 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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Capítulos de libros sobre el tema "Guided ultrasonic waves"

Samaitis, Vykintas, Elena Jasiūnienė, Pawel Packo y Damira Smagulova. "Ultrasonic Methods". En Structural Health Monitoring Damage Detection Systems for Aerospace, 87–131. Cham: 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 covers, wing skins and fuselages with the aim to detect, localise and describe delaminations, voids, fibre breakage and ply waviness. This chapter mainly focuses on long range guided wave structural health monitoring, as aircraft components require rapid evaluation of large components preferably in real time without the necessity for grouding of an aircraft. In few upcoming chapters advantages and shortcommings of bulk wave and guided wave ultrasonic inspection is presented, fundamentals of guided wave propagation and damage detection are reviewed, the reliability of guided wave SHM is discussed and some recent examples of guided wave applications to SHM of aerospace components are given.

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Huang, Songling, Shen Wang, Weibin Li y Qing Wang. "Finite Element Simulation of Ultrasonic Guided Waves". En Electromagnetic Ultrasonic Guided Waves, 237–70. Singapore: 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 y Qing Wang. "Applications of the Electromagnetic Ultrasonic Guided Wave Technique". En Electromagnetic Ultrasonic Guided Waves, 271–301. Singapore: 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 y Qing Wang. "Electromagnetic Acoustic Transducer". En Electromagnetic Ultrasonic Guided Waves, 1–42. Singapore: 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 y Qing Wang. "Analytical Method of EMAT Based on Lorentz Force Mechanism". En Electromagnetic Ultrasonic Guided Waves, 43–102. Singapore: 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 y Qing Wang. "Analytical Method of EMAT Based on Magnetostrictive Mechanism". En Electromagnetic Ultrasonic Guided Waves, 103–51. Singapore: 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 y Qing Wang. "The Propagation Characteristics of Ultrasonic Guided Waves in Plate and Pipe". En Electromagnetic Ultrasonic Guided Waves, 153–81. Singapore: 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 y Qing Wang. "Simulation of Interactions Between Guided Waves and the Defects by Boundary Element Method". En Electromagnetic Ultrasonic Guided Waves, 183–235. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0564-0_5.

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Khalil, Abdelgalil, Faeez Masurkar y A. Abdul-Ameer. "Estimating the Reliability of the Inspection System Employed for Detecting Defects in Rail Track Using Ultrasonic Guided Waves". En BUiD Doctoral Research Conference 2023, 190–202. Cham: 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 shape design of the sensor helps to excite a specific ultrasonic mode in the sample thereby hindering the ultrasonic energy of other coupled guided waves that can propagate simultaneously and the wedge angle is determined according to Snell’s law relying on the wave velocity of Rayleigh wave and bulk longitudinal wave. The guided wave responses as a function of varying severity of defects are obtained through a simulation study after the verification of the obtained guided wave responses with the help of an experimental study. A damage index (DI) is defined depending on defect size that gives the trend of damage severity from the captured ultrasonic responses and for monitoring defects in the rail track. This DI is eventually fed into the POD model to determine the probability of defect detection which in turn helps determine the inspection system reliability. The POD method also helps to study the critical design parameters that could affect or improve crack detection results.Purpose – To determine the reliability of inspection system deployed for interrogating health status of rail track.Methodology – Employing the Probability of detection technique for determining how reliable the inspection system is in detecting the health status of the rail track specimen using the ultrasonic guided waves.Findings – It has been found that the proposed inspection system is >90% reliable in detecting defects.Implications – This methodology can help maintenance engineers to make an informed decision on their developed technique for investigating the health status of the rail track sample.Originality/ value – 13%.

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Lanza di Scalea, Francesco, Ankit Srivastava y Claudio Nucera. "Nonlinear Guided Waves and Thermal Stresses". En Nonlinear Ultrasonic and Vibro-Acoustical Techniques for Nondestructive Evaluation, 345–417. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94476-0_9.

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Actas de conferencias sobre el tema "Guided ultrasonic waves"

Tang, Xiaoyu, Yunfei Xu, Haoming Xiang y Wenbin Huang. "Ultrasonic Guided Waves-Enabled Gear Meshing Force Measurement". En 2024 18th Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA), 463–67. 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 y M. J. Quarry. "Hidden Corrosion Detection with Guided Waves". En CORROSION 1997, 1–15. 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 sizing analysis. Special sensitivities to certain kinds of defects are possible with guided waves as a result of wave structure changes across the thickness of the structure by simple mode and frequency changes. A variable angle beam probe and multiple array comb type transducer are considered for flexibility in mode selection and isolation on the dispersion diagrams in order to achieve the special wave structures required for corrosion detection and also for reasonable penetration power. Going beyond the initial feasibility study of guided wave application for the detection of corrosion, a number of tools are developed that can be used in future work to more accurately detect, size, and classify corrosion types in various structures. Boundary element modeling analysis, for example, allows the calculation of reflection and transmission factors for a particular mode and frequency input to a particular pitting or corrosion type defect. This can be followed by detailed feature analysis for subsequent use in neural net algorithm development for corrosion analysis. The physically based features from guided wave analysis can than be used to provide insight and guidance into the algorithm development program using pattern recognition and neural nets.

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Rose, Joseph L., Luis E. Soley, Thom Hay y Vinod S. Agarwala. "Ultrasonic Guided Waves for Hidden Corrosion Detection in Naval Aircraft". En CORROSION 2000, 1–15. 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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Raghu, Damodaran, Humberto Figueroa, Lee Whittington y Jim Haupt. "Experience with Torsional Guided Wave Ultrasonic Technique for the Inspection of Offshore Pipeline Installations". En CORROSION 2004, 1–19. 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 anticipated advantages in terms of an extended choice of parameter selection and also because of its insensitivity to the type of liquid hydrocarbon/crude oil filling the lines. This paper details our experience in using ultrasonic guided waves with special emphasis on offshore installations like export and import risers. As part of the endeavor to increase the confidence in the technique, extensive verification was carried out on risers that could be removed from service. Additional verification was carried out on the in-house 75-meter test loop. From these studies it was possible to determine the optimum inspection parameters for the types of defects found in the lines. A novel method was developed in-house to approximate the local corrosion depth from the parameters reported from guided ultrasound. Case studies from two crude oil import risers are presented to illustrate the experiences. The unique challenges of inspecting offshore risers and the testing considerations are discussed. The benefits and limitations of the technique are discussed, and typical guidelines for riser inspection using guided wave are suggested.

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Jin, Shijiu, Liying Sun, Guichun Liu, Yibo Li y Hong Zhang. "Study on Ultrasonic Guided Waves in Fluid-Filled Pipes Surrounded by Water". En 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 was used to examine pipes with artificial defects and its propagation characteristics along the pipe were studied. Good agreement has been obtained between the experiments and predictions for pipes with different loading on the pipe.

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Beard, M. D. "Inspection of rockbolts using guided ultrasonic waves". En 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 y Prabhu Rajagopal. "Ultrasonic guided waves in eccentric annular pipes". En 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". En 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. y B. R. Tittmann. "Ultrasonic magnetostrictive transducers for guided ultrasonic waves in thin wires". En The 14th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, editado por Tribikram Kundu. SPIE, 2007. http://dx.doi.org/10.1117/12.715815.

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Wei, Yao, Weibin Wang, Yuqin Wang, Guichun Liu, Guangwen Liu y Kun Wang. "Inspection of Buried Gas Pipeline Using Ultrasonic Guided Waves". En 2008 7th International Pipeline Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ipc2008-64205.

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Ultrasonic Guided Wave testing is now widely used for the inspection of buried pipelines. The principle, characteristics and application of the inspection were introduced. As an example, pipelines in gas station were tested on-site and the reliability of testing results was verified by excavation. A comparison result showed that the ultrasonic guided waves can make it reality to test on site quickly, and has wide prospect.

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Informes sobre el tema "Guided ultrasonic waves"

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

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Bunget, Gheorghe, Fritz Friedersdorf y Jeon-Kwan Na. Quantitative Diagnostics of Multilayered Composite Structures with Ultrasonic Guided Waves. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 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), enero de 2006. http://dx.doi.org/10.2172/899976.

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Sriramadasu, Rajeshwara C., Ye Lu y 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, diciembre de 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), octubre de 1990. http://dx.doi.org/10.2172/6566168.

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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), septiembre de 2018. http://dx.doi.org/10.2172/1495185.

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Nestleroth. L52298 Augmenting MFL Tools With Sensors that Assess Coating Condition. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), marzo de 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 using in-line inspection (ILI) technology, but the availability of tools is limited and the cost of inspection is high compared to MFL inspection. SCC almost always occurs at coating faults; direct coating assessment could indicate future problems that could degrade the serviceability of the pipeline. In this project, a new sensor was developed to assess external coating that could work with currently available ILI tools for minimal additional cost to perform the inspection. The sensors, electromagnetic acoustic transducers (EMATs), generate ultrasonic waves that are guided by the pipe material around the circumference of the pipe. The coating material and adherence can influence the propagation of the ultrasonic waves; changes in ultrasonic signal features were attributed to coating faults. This development used modeling and experiments to establish a more optimal configuration for coating assessment. A multiple feature approach was used. A commonly used feature, signal amplitude, provided good sensitivity to coating condition but was influenced by inspection variables. One unique feature identified in this development is arrival time of the ultrasonic wave. For the wave type and frequency selected, the wave velocity was different for bare and coated pipe. Therefore, disbonded or missing coating can be detected by monitoring arrival time of the ultrasonic wave, a feature that is amplitude independent. Another feature for assessing coating, absorption of selective frequencies, was also demonstrated. Coating assessment capability was experimentally demonstrated using a prototype EMAT ILI tool. All three detection features were shown to perform well in an ILI environment as demonstrated at Battelle"s Pipeline Simulation Facility and BJ Inspection Services pull rigs. Improvement to the prototype occurred between each test; the most significant improvement was the design and construction of a novel set of thick-trace transmitting and receiving Printed Circuit Board (PCB) EMAT coils. Implementation variables such as moisture and soil loading were shown to have a minimal influence on results.

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Ray, Jason y 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.), marzo de 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 is based upon the expected results from other rods at the site, knowledge of rod response at other sites, data gathered from the trunnion rod research test bed at the ERDC, and comparison to the previous year’s effort.

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Ray, Jason D. y 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, diciembre de 2022. http://dx.doi.org/10.21079/11681/46282.

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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 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 is based upon the expected results from other rods at the site, knowledge of rod response at other sites, data gathered from the trunnion rod research test bed at ERDC, and comparison to the previous year’s effort.

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Zhao, George, Grang Mei, Bulent Ayhan, Chiman Kwan y Venu Varma. DTRS57-04-C-10053 Wave Electromagnetic Acoustic Transducer for ILI of Pipelines. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), marzo de 2005. http://dx.doi.org/10.55274/r0012049.

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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, (2) recently developed three-dimensional (3-D) Boundary Element Method (BEM) for best operational condition selection and defect feature extraction, (3) ultrasonic Shear Horizontal (SH) waves EMAT sensor design and data collection, and (4) advanced signal processing algorithm like a nonlinear split-spectrum filter, Principal Component Analysis (PCA) and Discriminant Analysis (DA) for signal-to-noise-ratio enhancement, crack signature extraction, and pattern classification. This technology not only can effectively address the problems with the existing methods, i.e., to detect the mechanical dents and metal loss in the pipelines consistently and reliably but also it is able to determine the defect shape and size to a certain extent.

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