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Relevant bibliographies by topics / Ultrasonics

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Academic literature on the topic 'Ultrasonics'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 July 2024

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Journal articles on the topic "Ultrasonics"

1

Lucas, M., A. Gachagan, and A. Cardoni. "Research applications and opportunities in power ultrasonics." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 223, no. 12 (October 21, 2009): 2949–65. http://dx.doi.org/10.1243/09544062jmes1671.

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The first applications in power ultrasonics were largely focused on ultrasonic cleaning baths, which rely on generating inertial cavitation, and the incorporation of ultrasonic excitation in manufacturing processes such as joining of plastics and metals. Since the early days of power ultrasonics there has been a rapid growth in the number of applications, and the diversified range of applications, from microwelding to ultrasonic osteotomy, has been made possible by a combination of advances in experimental techniques for characterizing low ultrasonic frequency vibrations and acoustics, and advances in computational modelling. This article highlights just some of the research in power ultrasonics that aims to exploit the benefits of low ultrasonic frequency high ultrasonic amplitude vibrations. This article reports current research and suggests future opportunities in three different application areas that have seen significant recent advances: joining and shaping of metals, surgical devices, and cavitation cells.

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Lucas, Margaret, Andrea Cardoni, E. McCulloch, G. Hunter, and Alan MacBeath. "Applications of Power Ultrasonics in Engineering." Applied Mechanics and Materials 13-14 (July 2008): 11–20. http://dx.doi.org/10.4028/www.scientific.net/amm.13-14.11.

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Applications of power ultrasonics in engineering are growing and now encompass a wide variety of industrial processes and medical procedures. In the field of power ultrasonics, ultrasonic vibrations are used to effect a physical change in a medium. However, the mechanism by which a process can benefit from power ultrasonics is not common for all applications and can include one or more of such diverse mechanisms as acoustic cavitation, heating, microfracture, surface agitation and chemical reactions. This paper presents two applications of power ultrasonics involving some of these different characteristics by concentrating on two case studies involving material failure (ultrasonic cutting) and acoustic cavitation (bacterial inactivation).

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Mulet, A., J. Benedito, J. Bon, and N. Sanjuan. "Review: Low intensity ultrasonics in food technology / Revisión: Ultrasonidos de baja intensidad en tecnología de alimentos." Food Science and Technology International 5, no. 4 (August 1999): 285–97. http://dx.doi.org/10.1177/108201329900500401.

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Ultrasonic applications can be classified into low intensity or high intensity applications. The latter are used to modify a process or product with ultrasonics, while in low intensity applications the process or product modifies the ultrasonic signal, thus providing information about the product. Low inten sity ultrasonics in food technology can be used to monitor a process (liquid level, flowmeters) or to determine the quality of food products. Since ultrasonic techniques are rapid, non-destructive, easy to automate and relatively inexpensive, the number of applications is rapidly growing in this field. Ultrasonics can also be considered for use in laboratory testing devices to determine physical and chemical properties of foods. Ultrasonics has been used to determine texture, composition and physical state in liquid and solid foods. The commonly measured ultrasonic parameters are velocity, attenua tion and frequency spectrum composition. Velocity is the parameter used most since it is the simplest and most reliable measurement. This paper reviews the basic principles of ultrasonics, the most suit able techniques for each type of application, the testing devices needed to make measurements and the most interesting applications.

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Duck, Francis. "Langevin’s ultrasonics." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A29—A30. http://dx.doi.org/10.1121/10.0015432.

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Langevin’s work in ultrasonics, which resulted in about twenty publications and patents, will be reviewed. At the beginning of WWI, encouraged by Marie Curie, he started work on a directional ultrasonic system to detect submarines and for underwater communications, based on Chilowski’s proposal. Rejecting whistles, sirens and magnetic sources, he used a large mica ‘singing’ condenser for transmission, and proposed a large area carbon granule microphone as receiver. Noise problems with carbon receivers led Langevin, in early 1917, to test a single large slice of quartz, cut perpendicularly to one of its three electrical axes. This orientation differed from that used by Jacques and Pierre Curie’s quartz pi ezo- électrique, in which the stress and electrical axes are perpendicular. Later that year he demonstrated quartz as a transmitter, creating the enabling technology for later ultrasonic developments. The knowledge was freely disseminated to other Allied laboratories. After the war, Langevin gave the first ever course on theoretical and practical ultrasonics. He facilitated the technological transfer of pulse-echo technology from military to civil sectors and the establishment of a laboratory in Toulon for the certification of ultrasonic transducers. His co-workers went on to study magneto-strictive and high-frequency quartz transducers, therapeutic applications, and finite-amplitude propagation.

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Zhang, Lu, Gorkem Okudan, Alexandra-Del-Carmen Basantes-Defaz, Ryan M. Gneiting, Sankaran Subramaniam, Didem Ozevin, and Ernesto Indacochea. "Characterization of GMAW (Gas Metal Arc Welding) Penetration Using Ultrasonics." Materials 13, no. 10 (May 17, 2020): 2307. http://dx.doi.org/10.3390/ma13102307.

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Welding defects such as lack of penetration, undercutting, crater crack, burn-through and porosity can occur during manufacturing. Assessing weld quality using nondestructive evaluation methods is important for the quality assurance of welded parts. In this paper, the measurement of weld penetration, which is directly related to weld integrity, is investigated by means of ultrasonics. Both linear and nonlinear ultrasonic methods are studied to assess their sensitivities to weld penetration. Welded plates with different penetration depths controlled by changing weld heat input are manufactured using gas metal arc welding (GMAW). Microscopic properties are assessed after the ultrasonic measurements are completed. Numerical models are built using the weld profile obtained from macrographs to explain the relationship between linear ultrasonic and weld penetration. A quantitative correlation between weld morphology (shape, width and depth) and the energy of linear ultrasonic signal is determined, where the increase of weld bead penetration exceeding the plate thickness results in decrease of the energy of the ultrasonic signal. Minimum detectable weld morphology using linear ultrasonics is defined depending on the selected frequency. Microhardness measurement is conducted to explain the sensitivity of nonlinear ultrasonics to both weld penetration and heterogeneity in weld. The numerical and experimental results show that the weld geometry influences the ultrasonic measurement other than the materials’ properties.

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Drury, J. C. "Ultrasonics Part 7. The ultrasonic beam." Insight - Non-Destructive Testing and Condition Monitoring 47, no. 5 (May 1, 2005): 297–99. http://dx.doi.org/10.1784/insi.47.5.297.65051.

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Bourkas, G., I. Prassianakis, V. Kytopoulos, E. Sideridis, and C. Younis. "Estimation of Elastic Moduli of Particulate Composites by New Models and Comparison with Moduli Measured by Tension, Dynamic, and Ultrasonic Tests." Advances in Materials Science and Engineering 2010 (2010): 1–13. http://dx.doi.org/10.1155/2010/891824.

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The elastic constants of particulate composites are evaluated employing a theoretical cube-within-cube formation. Two new models of four and five components, respectively, formed by geometrical combination of three-component models existing in the literature, are used as Representative Volume Elements. Using the governing stress and strain equations of the proposed models, two new equations providing the static elastic and shear moduli of particulate composites are formulated. In order to obtain the dynamic elastic and shear moduli, the correspondence principle was applied successively to components connected in series and/or in parallel. The results estimated by the proposed models were compared with values evaluated from existing formulae in the literature, as well as with values obtained by tensile, dynamic, and ultrasonic experiments in epoxy/iron particulate composites. They were found to be close to values obtained by static and dynamic measurements and enough lower compared with values obtained from ultrasonic experiments. The latter is attributed to the high frequency of ultrasonics. Since measurements from ultrasonic's and from dynamic experiments depend on the frequency, the modulus of elasticity estimated by ultrasonic's is compared with that (storage modulus) estimated by dynamic experiments.

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Wang, Xufeng, Xuanlin Wang, Jiyao Wang, and Zhongxi Tian. "Feasibility Study and Prospects of Rock Fragmentation Using Ultrasonic Vibration Excitation." Applied Sciences 10, no. 17 (August 25, 2020): 5868. http://dx.doi.org/10.3390/app10175868.

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This paper systematically examines the feasibility of using ultrasonic vibration excitation for rock breakage and fragmentation; it focuses on the failure mechanisms of rock mass under the impact of ultrasonic waves, and the development of ultrasonic technology. Laboratory testing using a self-designed system was conducted in this paper to further validate the efficiency and reliability of rock breakage using ultrasonics. The results show that: (i) under the effects of both the high speed impact of ultrasonic vibration excitation and induced rock vibration excitation, a fracture is initiated and propagates rapidly within and outside of the rock. Under ultrasonic vibration excitation for 140 s, the compressive strength decreased by 45.6%; (ii) under the excitation of ultrasonics, the rock specimens failed completely in a short time from inside to outside, and there are distinct fissures in the internal nucleation of the rock. It is suggested that ultrasonic excitation provides a novel and promising option for rock fragmentation and breakage, which optimises the efficiency of underground hard rock engineering.

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Capelo, J. L. "SPECIAL ISSUE: SELECTED ABSTRACTS OF THE V INTERNATIONAL CAPARICA CONFERENCE ON ULTRASONIC-BASED APPLICATION FROM ANALYSIS TO SYNTHESIS (ULTRASONICS 2021)." Journal of Integrated OMICS 11, no. 1 (July 30, 2021): 1–8. http://dx.doi.org/10.5584/jiomics.v11i1.199.

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Zheng, Jiandong, and Xiaoguang Ren. "The effect of ultrasonic on the heat transfer of CaCO3 scaled water." Anti-Corrosion Methods and Materials 61, no. 2 (February 25, 2014): 93–95. http://dx.doi.org/10.1108/acmm-04-2013-1251.

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Purpose – CaCO3 solution was chosen as the research environment in boiling pool heat transfer system using an automatic data collection system and scaling experiments. In this experiment, different concentrations of solution were made and ultrasonic excitation was applied under differing conditions of salt concentration and heat flux, such that the ultrasonics could reduce scale accumulation on the metal surface. The effectiveness of ultrasonics in inhabiting CaCO3 scale formation was evaluated. The paper aims to discuss these issues. Design/methodology/approach – Different concentration solution was made. Under the condition of different concentration and heat flux, the ultrasonic was introduced, so that it can reduce the scale accumulation on the metal surface. Ultrasonic function in inhabiting CaCO3 scale can be evaluated. Findings – The results showed that the ultrasonic not only enhanced the heat transfer rate under boiling conditions but also prevented the accumulation of the scale on the metal surface. Originality/value – The ultrasonic can enhance the heat transfer on the heater surface both in distilled water and scaled solution. In the earlier period, the heat transfer coefficient increases with the heat flux increases.

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Dissertations / Theses on the topic "Ultrasonics"

1

Tu, Juan. "Fundamental aspects of ultrasound contrast agent dynamic behaviors and inertial cavitation quantification /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/8122.

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Kreider, Wayne. "Gas-vapor bubble dynamics in therapeutic ultrasound /." Thesis, Connect to this title online; UW restricted, 2008. http://hdl.handle.net/1773/8074.

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Anand, Ajay. "Noninvasive temperature estimation technique for HIFU therapy monitoring using backscattered ultrasound /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/5867.

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Skilbeck, Mark. "Ultrasonics and nanomechanics." Thesis, University of Warwick, 2017. http://wrap.warwick.ac.uk/91770/.

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Since its invention, atomic force microscopy (AFM) has been a valuable tool for probing sample surfaces on the nanoscale, particularly the topography and the mechanical properties. This thesis investigates a subset of techniques focussed on measuring mechanical properties, particularly those which combine AFM with ultrasound. First, a nanoindentation technique is used to measure the mechanical properties (2D elastic modulus and breaking load) of suspended 2D materials. Graphene grown by chemical vapour deposition (CVD) is tested and found to have similar mechanical properties to previously reported values for mechanically exfoliated graphene. The CVD grown graphene is then functionalised by exposure to atomic oxygen, significantly affecting the mechanical properties, making the sheets both softer and weaker, becoming comparable to the properties of graphene oxide. Comparison with the changes in atomic structure suggests that these changes in mechanical properties are likely caused by the creation of extended topological defects. Such 2D materials are of interest as ultrasonic nanoresonators, for which the resonant behaviour could potentially be investigated using AFM. Ultrasonic force microscopy (UFM), a technique where the sample is oscillated at frequencies far greater than the cantilever resonance to provide a channel with contrast due to local surface stiffness, is also investigated. By combining experiment and simulation, the influence of experimental conditions on the observed response is studied and the challenges to obtaining quantitative results (e.g. the Young’s modulus) are discussed. The combination of UFM with other contact mode AFM techniques, such as conductive AFM and friction force microscopy, is demonstrated for the first time, presenting an unusual ability to acquire multimodal information in a single pass. The combination is also shown to benefit from the superlubricity effect of UFM, using it to conductively image a delicate carbon nanotube network. Finally, the use of an AFM as a detector for ultrasonic non-destructive testing, where the interaction of ultrasonic waves with sample features is used to probe a sample, is demonstrated. Test measurements are performed on a simple aluminium plate sample with a laser micro-machined slot and compared to results gathered using traditional detectors (piezoelectric transducers and laser interferometers), showing similar signal features. The advantages and disadvantages of AFM detection are discussed, with the high spatial resolution being the primary advantage. The capability to detect in-plane surface motion using the AFM’s lateral channel is demonstrated, allowing for simultaneous and distinct measurement of two components (one in-plane component and the out-of-plane motion) of the surface, which is not easily achieved using traditional ultrasonic detection methods.

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Nadkarni, Aditya. "Reflector geometry specific modeling of an annular array based ultrasound pulse-echo system." Link to electronic thesis, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-091207-114218/.

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Nicholson, Nicholas C. "Waveguides in medical ultrasonics." Thesis, University of Edinburgh, 1990. http://hdl.handle.net/1842/19191.

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Waveguides occur in a number of areas of medical ultrasonics, one important application being in sonically-sensitive biopsy-needles. The behaviour of the propagation of ultrasound in waveguides is not widely understood. A model of guided sound-wave propagation in the elastic limit, based on Pochhammer's theory, is described. Characteristic equations for both real and imaginary arguments are derived for isotropic solid and hollow cylindrical waveguides and also for transversely-isotropic solid cylindrical waveguides. These equations, which take the form of singular determinants, were solved numerically. The solutions reveal that waveguides are dispersive media and the group and phase velocities of various modes of propagation are presented. In addition, the particle displacements of some of these modes are illustrated. Group velocities of modes in waveguides of different material were measured experimentally using an ultrasound pulse technique and the experimental results are compared with theory. Attenuation of the more dominant modes of propagation was also measured over the frequency range 1.0-5.0 MHz and the phenomenon of selective attenuation is discussed in the light of a number of attenuation models. A systematic study of sound conduction in a variety of waveguides of different radii and material media was undertaken and the effect of heat treatment investigated. The changes in conduction introduced by the latter are explained by changes in the internal grain structure which were observed using methods of metallurgical analysis. Finally, sound propagation was examined for conditions similar to those encountered in biopsy-needle guidance techniques. Other possible applications of waveguides in the field of medical ultrasonics are also considered. These theoretical and experimental studies have provided a fuller understanding of mode propagation in waveguides used in medical ultrasonics.

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Barrett, George Alexander. "Kinesiographic lesion monitoring (KLM) /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/6026.

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Wu, Chung Hao. "DETERMINATION OF BLADDER VOLUMES BY MICROPROCESSOR BASED ULTRASONIC SYSTEM." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275392.

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Carr, Hilary. "Electrostatic transducers for airborne ultrasonics." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254254.

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Kuang, Wen-Tao. "Robot tracking with advanced ultrasonics." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339960.

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Books on the topic "Ultrasonics"

1

Keith, Attenborough, ed. Fundamentals of medical ultrasonics. Milton Park, Abingdon, Oxon: Spon Press, 2011.

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Kuttruff, Heinrich. Ultrasonics. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3846-8.

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1929-, Hill C. R., ed. Physical principles of medical ultrasonics. Chichester: E. Horwood, 1986.

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4

Dale, Ensminger, and Stulen Foster B, eds. Ultrasonics: Fundamentals, technology, applications. Boca Raton: Taylor & Francis, 2009.

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5

E, Drain L., ed. Laser ultrasonics: Techniques and applications. Bristol, England: A. Hilger, 1990.

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Ultrasonics: Fundamentals, technology, applications. 2nd ed. New York: M. Dekker, 1988.

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Duke, John C., ed. Acousto-Ultrasonics. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4757-1965-9.

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P, Papadakis Emmanuel, ed. Ultrasonic instruments and devices: Reference for modern instrumentation, techniques, and technology. San Diego, California: Academic Press, 1999.

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9

Bhargava, Satish K. Step by step ultrasound. 2nd ed. New Delhi: Jaypee Bros. Medical Publishers, 2010.

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10

R, Hill C., Bamber J. C, and Haar G. ter, eds. Physical principles of medical ultrasonics. 2nd ed. Chichester: John Wiley & Sons, 2004.

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Book chapters on the topic "Ultrasonics"

1

Ensminger, Dale, and Leonard J. Bond. "Ultrasonics." In Ultrasonics, 1–25. 4th ed. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9780429286964-1.

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Kuttruff, Heinrich. "Introduction." In Ultrasonics, 1–9. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3846-8_1.

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Kuttruff, Heinrich. "Non-Destructive Testing of Materials." In Ultrasonics, 269–95. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3846-8_10.

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Kuttruff, Heinrich. "Application of Ultrasound in Medical Diagnostics." In Ultrasonics, 297–324. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3846-8_11.

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Kuttruff, Heinrich. "Special Methods of Ultrasonic Imaging." In Ultrasonics, 325–61. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3846-8_12.

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Kuttruff, Heinrich. "Cavitation." In Ultrasonics, 363–94. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3846-8_13.

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Kuttruff, Heinrich. "Applications of High Intensity Ultrasound." In Ultrasonics, 395–429. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3846-8_14.

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Kuttruff, Heinrich. "On the Possibility of Health Risks Caused by Ultrasound." In Ultrasonics, 431–42. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3846-8_15.

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Kuttruff, Heinrich. "Basic Concepts of Acoustics." In Ultrasonics, 11–47. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3846-8_2.

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Kuttruff, Heinrich. "Sound Radiation and Sound Diffraction." In Ultrasonics, 49–78. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3846-8_3.

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Conference papers on the topic "Ultrasonics"

1

Viens, M., D. Drolet, A. Blouin, J. P. Monchalin, and C. Moreau. "Nondestructive Characterization of Plasma Sprayed Coatings by Laser Ultrasonics." In ITSC 1996, edited by C. C. Berndt. ASM International, 1996. http://dx.doi.org/10.31399/asm.cp.itsc1996p0947.

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Abstract Nondestructive methods previously developed for the detection of flaws, such as delaminations, or for the evaluation of the elastic properties of materials, could be judiciously adapted in order to get a better assessment of plasma-sprayed coatings. Laser ultrasonics is a nondestructive evaluation method which relies on both optics and ultrasonics. A short-pulse laser generates an ultrasonic wave into the material to be inspected, and a long-pulse laser, coupled to an interferometer, detects the resulting ultrasonic displacement. Laser ultrasonics is a remote sensing method and therefore could be used for the monitoring of hot plasma-sprayed coatings during the deposition process. In this work, experiments were performed on samples composed of ZrO2 sprayed under different conditions onto thick copper substrates. The samples were first probed by conventional ultrasonic transducers and then by a non contact laser-ultrasonic scanning system. The two series of measurements agreed well. These experiments showed that, after calibration, the coating thickness could be measured during the deposition process, with a relatively good accuracy, by laser ultrasonics. The laser-ultrasonic scanning system also revealed non uniformity of more than 10% in the coating thickness of the tested samples. This thickness variation is possibly caused by a temperature gradient induced in the coatings during spraying.

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Hwang, Juneho, Justin Kuo, and Amit Lal. "Planar GHz Ultrasonic Lens for Fourier Ultrasonics." In 2019 IEEE International Ultrasonics Symposium (IUS). IEEE, 2019. http://dx.doi.org/10.1109/ultsym.2019.8925662.

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Klein, Marvin, Niels Portzgen, Munendra S. Tomar, Martin Fingerhut, and Homayoon Ansari. "Sizing Stress Corrosion Cracking Using Laser Ultrasonics." In 2008 7th International Pipeline Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ipc2008-64468.

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Managing Stress Corrosion Cracking (SCC) damaged pipe has been a formidable challenge to the pipeline industry. Development of a practical solution for measurement and evaluation of SCC has been marred by the complexity of crack shapes, their distribution within a crack colony, and the lack of non-destructive technology capable of reliably measuring the crack depths. Laser Ultrasonics is an inspection technology wherein lasers are used for generation and detection of ultrasonic waves in the pipeline steel to be inspected. Unlike conventional ultrasonic testing, Laser Ultrasonics has a large frequency bandwidth and a tiny (∼0.5mm) footprint. These characteristics make it ideally suited for application as a depth sizing tool for closely-spaced cracks in a colony. It has been conclusively proved that laser ultrasonic inspection using the time of flight diffraction (TOFD) technique can reliably and accurately measure the depth of naturally occurring SCC and potentially other cracks and seam weld anomalies. This presentation describes the results of this co-sponsored project, including recent full scale demonstrations where a laser ultrasonic measurement subsystem has been built onto a prototype scanner.

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Demcenko, Andriejus, Christian Witte, Julien Reboud, and Jonathan M. Cooper. "Ultrasonic Wave Mixing for Nonlinear Ultrasonics in a Microfluidic Capillary." In 2019 IEEE International Ultrasonics Symposium (IUS). IEEE, 2019. http://dx.doi.org/10.1109/ultsym.2019.8926164.

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"Sponsors-Ultrasonics 2006." In 2006 IEEE Ultrasonics Symposium. IEEE, 2006. http://dx.doi.org/10.1109/ultsym.2006.11.

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"Copyright-Ultrasonics 2006." In 2006 IEEE Ultrasonics Symposium. IEEE, 2006. http://dx.doi.org/10.1109/ultsym.2006.1.

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"Exhibitors-Ultrasonics 2006." In 2006 IEEE Ultrasonics Symposium. IEEE, 2006. http://dx.doi.org/10.1109/ultsym.2006.10.

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Sweeney, Nina E., David Lines, Ewan Nicolson, Charalampos Loukas, Stephen G. Pierce, Charles N. MacLeod, and Simon Parke. "Towards Real-Time Quantitative Monitoring and Control of Weld Pool Dimensions using Phased Array Ultrasonics." In ASNT Research Symposium 2023. The American Society for Nondestructive Testing Inc., 2023. http://dx.doi.org/10.32548/rs.2023.088.

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While ultrasonic NDT of welded joints is well understood and commercially undertaken at the end of the fabrication timeline, significant commercial benefits can be realised through the adoption of novel in-process inspection and monitoring techniques. This paper shows the use of phased array ultrasonics to monitor and analyse the molten weld pool live during weld deposition. The received ultrasonic signals are shown to contain information related to key physical transitions occurring within the welding process, namely the melting and solidification of the weldment. This preliminary work unlocks the potential for real-time monitoring and control of the welding process. The information stored within the ultrasonic signals can be directly related to quantitative information about the welding process providing means for anticipation of defect occurrence and preventative control.

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Quader, Raihan, David Grewell, and Lokesh Karthik Narayanan. "Effect of Ultrasonic Vibration on Physical and Tensile Properties of Fused Deposition Modeled Polylactic Acid Specimens." In ASME 2023 18th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/msec2023-104816.

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Abstract Though the use of fused deposition modeling (FDM) of polymers is ever increasing, their utilization in applications requiring high-strength and high-quality surface finish is limited. The process-inherent voids in-between deposited layers and the coarse outer surface resulting from freeform deposition are the critical deterrents. Applying ultrasonic vibration post-fabrication could minimize these issues. In this study, we FDM printed ASTM D638 Type IV specimens from PLA using LulzBot Taz Pro-S printer. Ultrasonic vibration was applied on both sides of the specimens in two different modes. Surface roughness and thickness were measured before and after ultrasonic application. Tensile strength was measured post-ultrasonic application and compared with the control specimens. For internal detail observation, X-ray computed tomography (X-ray CT) was used. In all cases, surface roughness was reduced significantly on the specimens’ top surfaces post-ultrasonics. The thicknesses were not significantly changed. The mean maximum tensile strength increased for all sets of specimens’ post-ultrasonics. X-ray CT images showed that post-ultrasonic specimens had fewer voids compared to the control specimens. Ultrasonic-generated heat and downforce might have facilitated combined squeeze flow and intermolecular diffusion between the successive layers of deposited plastics to increase interfacial healing.

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"1998 IEEE Ultrasonics Symposium." In 1998 IEEE Ultrasonics Symposium. Proceedings. IEEE, 1998. http://dx.doi.org/10.1109/ultsym.1998.764964.

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Reports on the topic "Ultrasonics"

1

Wagner, J. W. Laser ultrasonics: Current research needs. Office of Scientific and Technical Information (OSTI), September 1990. http://dx.doi.org/10.2172/6177521.

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Klein, Marvin. Noncontact Flow Rate Using Laser Ultrasonics. Office of Scientific and Technical Information (OSTI), April 2020. http://dx.doi.org/10.2172/1614760.

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Klein, Marvin. Noncontact Flow Rate Using Laser Ultrasonics. Office of Scientific and Technical Information (OSTI), April 2020. http://dx.doi.org/10.2172/1614760.

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Zagrai, Andrei N. Embedded Ultrasonics for SHM of Space Applications. Fort Belvoir, VA: Defense Technical Information Center, July 2012. http://dx.doi.org/10.21236/ada566383.

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Maris, J. H., and J. Tauc. Surfaces and thin films studied by picosecond ultrasonics. Office of Scientific and Technical Information (OSTI), May 1992. http://dx.doi.org/10.2172/5022130.

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Maris, H. J., and J. Tauc. (Surfaces and thin films studied by picosecond ultrasonics). Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/6432484.

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Dike, Jay J., Wei-yang Lu, Lawrence W. Peng, and James C. F. Wang. Stress Evaluation and Model Validation Using Laser Ultrasonics. Office of Scientific and Technical Information (OSTI), February 1999. http://dx.doi.org/10.2172/5981.

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Author, Unknown. DTRS56-02-T-0002 Pipeline Inspection Technologies Demonstration Report. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), May 2001. http://dx.doi.org/10.55274/r0011928.

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The purpose of this assessment is to help identify promising inspection technologies best suited for further development as part of an integrated teaming effort between the robotic platform and sensor developers. This document is not intended to provide a detailed analysis of each technology's performance or to rate their performance relative to one another. Technologies discussed include: Shear Horizontal Electromagnetic Acoustic Transducer (EMAT) Remote Field Eddy Current (RFEC) Collapsible Remote Field Eddy Current (CRFEC) Nondestructive Ultrasonic Measurement Permanent Magnet Eddy Current Multi-purpose Deformation Sensor Dual Magnetization MFL Guided Wave Ultrasonics

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Nestleroth. L51811 Circumferential Magnetic Flux for In-Line Detection of SCC and Selective Seam Weld Corrosion. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), September 1999. http://dx.doi.org/10.55274/r0010666.

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Longitudinal defects, including stress-corrosion cracking (SCC) and selective seam weld corrosion, can occur in natural gas transmission pipelines. Previously developed nondestructive testing techniques (including angle beam ultrasonics, electromagnetic acoustic transducers (EMATs), and remote field eddy current) are capable of detecting longitudinal defects. Two angle beam ultrasonic syatems are commercially available, and an EMAT system is being commercialized. But there are factors that limit the applicability of these techniques, such as minimum pipe diameter and maximum inspection speed. A new more cost effective nondeastructive testing technique for pipeline inspection is needed to identify and evaluate the potential hazards from SCC. The complexity of angle beam ultrasonics and EMAT's and others makes the cost of inspection higher than MFL corrosion inspection. Circumferential MFL is more economical has the potential to to more accurately size axially oriented corrosion than the more common axial implementation. Though at present the method contained within this study has some deficiencies, a circumferential MFL in-line inspection tool could serve as a screening tool to determine whether a pipeline has cracks and seam weld defects as well as other longitudinal defects such as third-party mechanical damage.

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Bruce. L51613 Ultrasonic Vehicle for the Detection of SCC in Buried Gas Pipelines.pdf. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), September 1989. http://dx.doi.org/10.55274/r0010582.

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This report describes the present state of development of the ultrasonic pipe inspection vehicle being jointly developed by C.W. Pope and Associates and the Centre for Industrial Control Sciences at the University of Newcastle, Australia. The present aim is the evaluation of unpressurised pipelines to record areas of stress corrosion cracking (SCC) at relatively low cost and with minimum sophistication.The report addresses the suitability of ultrasonics in detecting stress corrosion cracking, outlines the system developed to date, and presents results and discussion from the laboratory trials in which the vehicle has been run in four samples of pipeline containing SCC.

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