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Journal articles on the topic 'Acoustic emisson'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 July 2025

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1

Wang, Kai, Gang Liu, Jia Lin Zhang, Jia Chen Du, and Bang Tang Yin. "Monitoring Solid Phase in Oil-Water-Sand Multiphase Flow in Impact Parts Based on Acoustic Emission Sensor Technology." Applied Mechanics and Materials 865 (June 2017): 573–79. http://dx.doi.org/10.4028/www.scientific.net/amm.865.573.

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Oil-water-sand multiphase flow is widely used in oil production industry. The effect of real-time measurement of the solid phase in oil-water-sand multiphase flow parameters is significant in the monitoring of sand production. In order to improve the existing limitations in solid particle detection of a liquid-solid system, an acoustic emission signals amplify device for liquid-solid flow has been developed and its evaluation test is conducted indoor. Computational fluid dynamic (CFD) analysis method is applied based on the theory of multiphase flow macroscopic continuum. Research is conducted

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Lee, Jin Kyung, Joon Hyun Lee, Sang Pill Lee, In Su Son, and Dong Su Bae. "Acoustic emisson and ultrasonic wave characteristics in TIG-welded 316 stainless steel." Metals and Materials International 20, no. 3 (2014): 483–88. http://dx.doi.org/10.1007/s12540-014-3011-8.

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3

Broyles, Jonathan. "Acoustic design trade-offs when reducing the carbon footprint of buildings." Journal of the Acoustical Society of America 153, no. 3_supplement (2023): A348. http://dx.doi.org/10.1121/10.0019111.

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Architects and building engineers are increasingly tasked to consider the environmental performance of building designs to meet national and global targets to reduce carbon emissions. While minimizing the carbon footprint is needed to mitigate the effects of climate change, sustainability-driven design can have benefits or unintended consequences on secondary design objectives. Neglect of additional building disciplines could negatively impact the indoor environmental quality in a building and require costly change orders or retrofits. Recent research has shown that sustainability-driven desig

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Kimmerl, Julian, and Moustafa Abdel-Maksoud. "Visualization of Underwater Radiated Noise in the Near- and Far-Field of a Propeller-Hull Configuration Using CFD Simulation Results." Journal of Marine Science and Engineering 11, no. 4 (2023): 834. http://dx.doi.org/10.3390/jmse11040834.

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Underwater radiated noise is part of the anthropogenic emissions into the environment and as such a pressing problem for the preservation of the marine ecosystem. In order to direct attention to the most relevant noise sources associated with ships it is crucial to precisely determine the local origins of the acoustic emissions. As acoustics are by nature perceived through a very subjective auditory perception, visual post-processing support is required in engineering applications to assess the impact on structures and to create an understanding of the overall noise field geometrically, topolo

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Barati, H., Z. Basiri, and A. Abdolali. "Acoustic Multi Emission Lens via Transformation Acoustics." Chinese Physics Letters 35, no. 10 (2018): 104301. http://dx.doi.org/10.1088/0256-307x/35/10/104301.

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6

Klamecki, B. E., and J. Hanchi. "Wear Process Description Based on Acoustic Emission." Journal of Tribology 112, no. 3 (1990): 469–76. http://dx.doi.org/10.1115/1.2920283.

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Since acoustic emissions are generated by fundamental mechanical processes, they can provide insight into the basic processes which determine friction and wear behavior. Descriptions of acoustic emission generated by plastic deformation and fracture were developed, and wear tests were performed, during which acoustic emission activity was measured. This work demonstrates that acoustic emissions can be used to track the wear process in terms of the energy dissipation mechanisms acting. The results show that acoustic emission count rate and amplitude distribution correspond to wear rate and that

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Jessen, Birger. "Measuring low noise level in dwellings." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 4 (2023): 3978–86. http://dx.doi.org/10.3397/in_2022_0567.

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DS 490:2018 "Akustik - Lydklassifikation af boliger", translated to "Acoustics - Acoustic Classification of Dwellings" relates to many acoustical parameters, and two of them "Noise from ventilation" and "Reverberation times" are now being tested in real life in the Danish "Voluntary sustainability classification".(Called FBK) Danish building regulation state a sound level limit in dwellings from all kinds of technical systems at 30 dB(A), equal to the Acoustical class C, comparable with the limit in several countries. Research shows that 30 dB(A) does not ensure acoustic satisfying comfort for

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Lee, Min Rae, and Joon Hyun Lee. "Evaluation of Defect in Compostie Using Acousto-Ultrasonic Technique." Key Engineering Materials 326-328 (December 2006): 1267–70. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1267.

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This paper is focused on the capability of the Acousto-Ultrasonic (AU) technique and the non-contact technique to provide diagnostic information useful to detect defect in composite. An acousto-ultrasonics (AU) is to simulate stress wave that resemble acoustic emission waves but without disrupting the material. One launched inside the material sample, the wave are modified by stochastic processes like those that affect spontaneous acoustic emissions from internal sources during stressing, deformation, etc. Moreover, acousto-uloasonic waves are launched periodically at predetermined times and w

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9

Afinawati Hashim, Khairul, Noorsuhada Md Nor, Shahrum Abdullah, and Nurul Khirna Fazlina Khir Johari. "Acoustic Emission Characteristics of Real-time Monitoring on Asphalt Pavement." Jurnal Kejuruteraan 37, no. 3 (2025): 1069–83. https://doi.org/10.17576/jkukm-2025-37(3)-01.

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This paper presents the acoustic emission characteristics for asphalt pavements under real load conditions. With the increasing number of vehicles on the roadways causing more damage and deterioration to asphalt pavements, effective monitoring is necessary to prolong the life of asphalt pavement structures. To determine these properties, real-time monitoring of asphalt pavements using acoustic emissions technique was conducted in the field. The study focused on Lebuh Ilmu Road at Universiti Kebangsaan Malaysia, a continuation of the main federal road. This real-time monitoring was carried out

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Drachev, K. A., A. V. Kazarbin та V. I. Rimlyand. "РЕГИСТРАЦИИ СИГНАЛОВ АКУСТИЧЕСКОЙ ЭМИССИИ ПРИ МЕХАНИЧЕСКИХ ИСПЫТАНИЯХ ПОЛИМЕРНЫХ КОМПОЗИТОВ С ПОМОЩЬЮ АКУСТИЧЕСКОГО МИКРОФОНА". Вестник ТОГУ, № 2(77) (20 червня 2025): 7–16. https://doi.org/10.38161/1996-3440-2025-2-7-16.

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11

Loman, Miminorazeansuhaila, Che Ku Eddy Nizwan Che Ku Husin, Mohd Imran Yusof, and Mohd Fadhlan Yusof. "Utilization of the Acoustic Emission Technology in Bone Tissues." Applied Mechanics and Materials 471 (December 2013): 218–22. http://dx.doi.org/10.4028/www.scientific.net/amm.471.218.

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The main subject of this study was to establish a meaningful significance of the acoustic emission technology to be incorporated in the pedicle screw fixation procedure. Its purpose was to find a replacement technique using the acoustic emission technology instead of keep using the conventional way which only depends on the surgeons expertise. The experiment of pedicle screw fixation method work was carried out on a goats vertebrae as a lab scale material instead of the human cervical vertebrae. While the experimental work was done, the acoustic emission signatures were then acquired using the

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Zheng, Jiyu, Xiaohua Jin, Kunyun Tian, and Yinbo Zhou. "ACOUSTIC EMISSION AND DAMAGE CHARACTERISTICS OF ANTHRACITE UNDER DIFFERENT CONDITIONS." Materiali in tehnologije 55, no. 2 (2021): 213–18. http://dx.doi.org/10.17222/mit.2020.082.

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Acoustic emission (AE) can be used to observe the process of coal fracture propagation. Based on a press and acoustic-emission platform, the damage and acoustic-emission characteristics of anthracite with different loading rates, water amounts and sizes were studied. The results show that there is less acoustic emission in the initial compression stage of coal; acoustic emission is more active in the transition from elastic deformation to plastic deformation, which is manifested in the following aspects: the faster the loading rate, the higher is the number of acoustic-emission events; the pea

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Giglio, Andrea, Marcella Benini, Jonathan Broyles, and Ingrid Paoletti. "Decarbonizing architectural acoustics: Assessing the CO2 emissions of acoustic systems in an office building in Milan." Journal of the Acoustical Society of America 156, no. 4_Supplement (2024): A29. https://doi.org/10.1121/10.0034992.

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Nowadays, the Architectural-Engineering-Construction (AEC) market requests buildings with both low CO2 emissions and high performance across all building disciplines, including architectural acoustic systems, to satisfy design regulations and protocols. However, not all acoustic material systems guarantee both of them. Previous research has suggested that design trade-offs exist when reducing CO2 emissions and achieving high-performing room acoustics but a study on a case study is absent. In response, this paper analyses the carbon data set and material quantities of the acoustic systems of a

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MA, FUYIN, JIU HUI WU, and HAIYUN HOU. "PROGRESS IN PHYSIOLOGICAL ACOUSTICS." Journal of Mechanics in Medicine and Biology 13, no. 05 (2013): 1340007. http://dx.doi.org/10.1142/s0219519413400071.

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Physiological acoustics is a very hot topic in modern acoustic research, which is to study the hearing mechanism and the utterance of both humans and animals. It could be divided into two main aspects: physical acoustics of the ear and physiological acoustics. In physiological acoustics, there are some common research methods, such as objective experimental testing, subjective feelings evaluation survey statistical method, building the physical acoustic model and numerical simulation methods, etc. The authors are researching the accurate mathematical model of equal loudness curves, critical ba

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Shcherbakov I.P., Afanaseva E.V., Dunaev A.A., et al. "Variation of the micromechanics of impact fracture of MgAl-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=- in response to the applied hot isostatic pressing." Physics of the Solid State 64, no. 10 (2022): 1483. http://dx.doi.org/10.21883/pss.2022.10.54239.377.

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The MgAl2O4 ceramics produced by the preliminary clinkering of synthesized powder was exposed to the hot isostatic pressing (HIP). Samples were subjected to a pointed impact loading, which excited the acoustical and electromagnetic emissions (AE and EME, respectively). In non-HIP-treated samples, the energy distribution in time series of AE and EME pulses followed an exponential law, while after an application of the hot isostatic pressing procedure, the emissions of both types exhibited the power law energy distributions in time sweeps. A variation of the specificity of the impact-induced AE/

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16

González, Genaro, Albert Samper, and Blas Herrera. "ACOUSTIC SIMULATION OF THE CENTRAL HALL IN PALAU GÜELL BY GAUDÍ." Architecture and Engineering 6, no. 2 (2021): 18–30. http://dx.doi.org/10.23968/2500-0055-2021-6-2-18-30.

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Introduction: Quadric surfaces are commonly used in buildings due to their geometric ability to distribute and focus sound waves. The Central Hall in Palau Güell — a UNESCO World Heritage Site — is topped by an ellipsoidal dome. Antoni Gaudí envisaged this room as a concert hall where the organ and the dome play a lead role. Methods: The two previously mentioned elements are the main subject of our paper, which serves two purposes: 1) determining the values of the acoustic parameters of the hall through onsite measurement and also through simulation, and 2) using the geometric parameters of th

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17

Pearson, Christopher. "Le Corbusier and the Acoustical Trope: An Investigation of Its Origins." Journal of the Society of Architectural Historians 56, no. 2 (1997): 168–83. http://dx.doi.org/10.2307/991282.

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Le Corbusier's later theory and production were largely informed by two important considerations: his idea of "ineffable space" (l'espace indicible), and his singular conception of "acoustics," which he apparently used as a troping or analogical tool in his design method. Le Corbusier was to describe the chapel at Ronchamp (1950-1954), for example, as a building that employed an "acoustic component in the domain of form," and suggested that the project began by taking into account "the acoustic of the landscape." The sources of this cryptic appeal to "acoustics" can be identified with some pre

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18

Liu, Yang, Cai-Ping Lu, and Heng Zhang. "Mutation effect of acoustic and electromagnetic emissions of hard rock impact failure." International Journal of Distributed Sensor Networks 15, no. 1 (2019): 155014771882447. http://dx.doi.org/10.1177/1550147718824473.

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To reveal acoustic emission and electromagnetic emission effects during hard rock impact failure is a crucial issue for monitoring and warning rockburst risk induced by hard roof fracture and fall. The presented research focuses on acoustic emission and electromagnetic emission and microseismic effects detected during laboratory tests and by in situ multi-parameter observations, and the field observations agreed satisfactorily with the experimental evidences. The following main conclusions were drawn: (1) the stress level, frequency of micro-cracks, and impact failure regularity of hard rocks

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19

Dostál, Petr, Zdeněk Havlíček, and Lucie Kratochvílová. "Use of Acoustic Emission for Testing Resistance of Hooves." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 66, no. 1 (2018): 29–33. http://dx.doi.org/10.11118/actaun201866010029.

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This paper deals with the possibility of using an acoustic emission method for testing tensile strength of hooves. By using the acoustic emission (AE) method, we are able to locate degraded areas in hooves and then estimate the extent of degradation. In the experimental part, a sensor was used to record the emission signals, the measured data were processed and analysed, and the response of hooves to the applied mechanical load over time was monitored. Altogether, three samples were tested on the Zwick Z050/TH 3A materials testing machine and simultaneously the acoustic emissions were measured

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20

Schnabel, Stephan, Stefan Golling, Pär Marklund, and Roland Larsson. "The influence of contact time and event frequency on acoustic emission signals." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 231, no. 10 (2017): 1341–49. http://dx.doi.org/10.1177/1350650117693176.

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Studies of acoustic emissions (AE) of rotating machine elements is often performed under a constant speed. There are few investigations on speed and contact time dependency of acoustic emission signals, even though some investigations have reported difficulties at elevated rotational speeds. Simplified experiments are, therefore, presented in this article to increase the understanding of the time dependency of acoustic emission signals. Hertzian impacts and tensile tests are used to study contact time, the time duration of an event and offset time, the time between events and accordingly the e

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Nedoseka, S. A., A. Ya Nedoseka, M. A. Yaremenko, O. I. Boichuk, and M. A. Ovsienko. "Acoustic emission method at evaluation of the state of welds and their service properties. Part 1. Effect of welded joint type on acoustic emission." Paton Welding Journal 2021, no. 2 (2021): 46–52. http://dx.doi.org/10.37434/tpwj2021.02.09.

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22

Sun, Lin, Lisen Lin, Xulong Yao, Yanbo Zhang, Zhigang Tao, and Peng Ling. "Real-Time Recognition Method for Key Signals of Rock Fracture Acoustic Emissions Based on Deep Learning." Sensors 23, no. 20 (2023): 8513. http://dx.doi.org/10.3390/s23208513.

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The characteristics of acoustic emission signals generated in the process of rock deformation and fission contain rich information on internal rock damage. The use of acoustic emissions monitoring technology can analyze and identify the precursor information of rock failure. At present, in the field of acoustic emissions monitoring and the early warning of rock fracture disasters, there is no real-time identification method for a disaster precursor characteristic signal. It is easy to lose information by analyzing the characteristic parameters of traditional acoustic emissions to find signals

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23

Gabbert, Ulrich, Fabian Duvigneau, and Stefan Ringwelski. "NOISE CONTROL OF VEHICLE DRIVE SYSTEMS." Facta Universitatis, Series: Mechanical Engineering 15, no. 2 (2017): 183. http://dx.doi.org/10.22190/fume170615009g.

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The paper presents an overall simulation approach to control the noise emission of car engines at a very early stage of the design process where no real prototypes are available. The suggested approach combines different physical models and couples different software tools such as multi-body analysis, fluid dynamics, structural mechanics, magneto-electrodynamics, thermodynamics, acoustics and control as well. The general overall simulation methodology is presented first. Then, this methodology is applied to a combustion engine in order to improve its acoustical behavior by passive means, such

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Fuhrmann, Ferdinand, Anna Maly, Martin Blass, Jakub Waikat, Fredi Belavic, and Franz Graf. "3D Acoustic Heat-Maps for Transformer Monitoring Applications." Journal of Energy - Energija 72, no. 4 (2024): 15–18. http://dx.doi.org/10.37798/2023724508.

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   We present a novel approach for measuring and representing acoustic emissions of transformers. The representation of location-based acoustic emissions enables improved monitoring of transformers, e.g., to detect and predict anomalies and failure events. Here, we introduce 3D acoustic heatmaps to visualize the sound emission patterns of a transformer. We use a combined sensing approach consisting of a 3D point cloud, a microphone array, and beamforming algorithms to generate the distributed representation of acoustic emissions over the entire surface of the transformer. In

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Scapozza, Carlo, Felix Bucher, Peter Amann, Walter J. Ammann, and Perry Bartelt. "The temperature- and density-dependent acoustic emission response of snow in monoaxial compression tests." Annals of Glaciology 38 (2004): 291–98. http://dx.doi.org/10.3189/172756404781814861.

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AbstractResults of acoustic emission tests on cylindrical specimens under compression are reported. Deformation-rate-controlled tests with strain rates ranging from 1.1 × 10-6 s-1 to 2.6 × 10-3 s-1 at temperatures between T = -11.2°Cand T = -1.7°C were performed. The investigated snow was fine-grained, with a density varying between 220 and 380 kgm-3. The acoustic emission was measured with two distinct piezoelectric sensors: a wide-band sensor (frequency 100–1000 kHz) and a resonant sensor (frequency 35–100 kHz). The relationship between the applied strain rate and the measured maximum acoust

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Herff, S., K. Pausch, H. Nawroth, S. Schlimpert, CO Paschereit, and W. Schröder. "Impact of burner plenum acoustics on the sound emission of a turbulent lean premixed open flame." International Journal of Spray and Combustion Dynamics 12 (January 2020): 175682772095690. http://dx.doi.org/10.1177/1756827720956906.

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The acoustic field of a turbulent lean cpremixed open flame is numerically investigated by a hybrid method solving the Navier-Stokes equations in a large-eddy simulation formulation and the acoustic perturbation equations. The interaction of acoustic modes of a burner plenum and the turbulent flame is analyzed with respect to the sound emission of the flame. It is investigated if a simplified computation yields a good broadband agreement of the sound pressure spectrum with experimental measurements. The results of two numerical setups, i.e., the first configuration consists of the burner plus

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27

Rajic, Nik, Cedric Rosalie, Benjamin Steven Vien, et al. "In situ wavenumber–frequency modal decomposition of acoustic emissions." Structural Health Monitoring 19, no. 6 (2020): 2033–50. http://dx.doi.org/10.1177/1475921719885324.

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A new acoustic sensing capability, consisting of a flexible high-density linear piezoelectric sensor array coupled to a high-bandwidth interrogation device, is developed and applied to in situ wavenumber–frequency modal decomposition of acoustic emissions in plates. An experimental assessment of the capability is undertaken using acoustic emissions generated by a ball-drop impact on aluminium and composite panels. A new method for acoustic source localisation based on this new sensor array is described, and it is shown to be more accurate than a conventional multilateration technique using sin

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Tan Yang, Tan Yang, Ying Song Ying Song, Wentao Zhang Wentao Zhang, and and Fang Li and Fang Li. "Acoustic emission detection using intensity-modulated DFB fiber laser sensor." Chinese Optics Letters 14, no. 12 (2016): 120602–5. http://dx.doi.org/10.3788/col201614.120602.

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SHIOTANI, Tomoki. "Health Monitoring for Civil Structures by Means of Acoustic Emission." Proceedings of Conference of Kanto Branch 2004.10 (2004): 43–46. http://dx.doi.org/10.1299/jsmekanto.2004.10.43.

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Pochapskyy, Y. P., B. P. Klym, N. P. Melnyk, and P. P. Velykyi. "Statistical properties of signal pulse amplitude of magnetoelastic acoustic emission." Information extraction and processing 2019, no. 47 (2019): 47–53. http://dx.doi.org/10.15407/vidbir2019.47.047.

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Qiu Fa-Sheng, Zeng Yu-Fan, Xiao Shu-Kun, Yin Xiao-Fang, and Guo Chao-Yang. "Influence of Stress on Magneto-acoustic Emission and Magnetic Domain dynamic." Acta Physica Sinica 74, no. 14 (2025): 0. https://doi.org/10.7498/aps.74.20250376.

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Magnetic response from micro and macro scale is widely used for stress evaluation in Non-destructive testing and evaluation. The basic principle is that the magnetic domain pattern and magnetic domain dynamics is highly depend on the applied tensile stress. Understanding the evolution of magnetic domains under the action of multi-field coupling is critical for developing novel magnetic non-destructive testing technologies. In this work, the effect of stress on magnetic domain and magneto-acoustic emission signals in polycrystalline materials was investigated based on the magneto-optical Kerr i

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32

Wu, Qiang, Michael Gray, Cameron A. B. Smith, et al. "Challenges in classifying cavitation: Correlating high-speed optical imaging and passive acoustic mapping of cavitation dynamics." Journal of the Acoustical Society of America 156, no. 5 (2024): 3608–20. http://dx.doi.org/10.1121/10.0034426.

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Both the biological effects and acoustic emissions generated by cavitation are functions of bubble dynamics. Monitoring of acoustic emissions is therefore desirable to improve treatment safety and efficacy. The relationship between the emission spectra and bubble dynamics is, however, complex. The aim of this study was to characterise this relationship for single microbubbles using simultaneous ultra-high-speed optical imaging and passive acoustic mapping of cavitation emissions. As expected, both the number of discrete harmonics and broadband content in the emissions increased with increasing

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Ren, Tianying, Wenxuan He, Matthews Scott, and Alfred L. Nuttall. "Group Delay of Acoustic Emissions in the Ear." Journal of Neurophysiology 96, no. 5 (2006): 2785–91. http://dx.doi.org/10.1152/jn.00374.2006.

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It is commonly accepted that the cochlea emits sound by a backward traveling wave along the cochlear partition. This belief is mainly based on an observation that the group delay of the otoacoustic emission measured in the ear canal is twice as long as the forward delay. In this study, the otoacoustic emission was measured in the gerbil under anesthesia not only in the ear canal but also at the stapes, eliminating measurement errors arising from unknown external- and middle-ear delays. The emission group delay measured at the stapes was compared with the group delay of basilar membrane vibrati

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Svrzic, Srdjan, Marija Djurkovic, Gradimir Danon, Mladen Furtula, and Damjan Stanojevic. "On acoustic emission analysis in circular saw cutting beech wood with respect to power consumption and surface roughness." BioResources 16, no. 4 (2021): 8239–57. http://dx.doi.org/10.15376/biores.16.4.8239-8257.

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A sound or a noise that accompanies wood machining processes is introduced by the tool rotation itself, by the friction of moving machine parts, or by wood-tool interaction. The sounds generated during machining with a circular saw could be analysed in order to monitor and possibly control the cutting process. Applying altered cutting parameters while cutting beech wood (Fagus sylvatica L.), which is the most common wood species in the Republic of Serbia, caused acoustic emissions that could be analysed throughout corresponding spectra. As shown in previous studies, altering the cutting parame

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Honda, Haruki, Seung-Wook Han, Sang-Jae Yoon, Nak-Sam Choi, and Kazuo Arakawa. "OS6-4 Fracture Evaluation of Laminated CFRP using Acoustic Emission(Acoustic Emission and Ultrasonic Testing of Plates (2),OS6 Ultrasonic non-destructive testing and evaluation,MEASUREMENT METHODS)." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2015.14 (2015): 75. http://dx.doi.org/10.1299/jsmeatem.2015.14.75.

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SAMAN, Alias Mohd, Takashi UEDA, Kazuto FUJISAWA, Tatsuaki FURUMOTO, Akira HOSOKAWA, and Tomohiro KOYANO. "509 Temperature and Acoustic Emission Monitoring in Thermal Stress Cleaving Process." Proceedings of Conference of Hokuriku-Shinetsu Branch 2014.51 (2014): _509–1_—_509–2_. http://dx.doi.org/10.1299/jsmehs.2014.51._509-1_.

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Spudich, Thomas M., Brian A. Pelz, and Jon W. Carnahan. "Acousto-Optic Signal Modulation for Atomic Emission Spectrometry Background Correction." Applied Spectroscopy 51, no. 6 (1997): 765–69. http://dx.doi.org/10.1366/0003702971941089.

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An acousto-optic diffraction device is mounted within a polychromator to perform spectral shifting for the purpose of background correction for atomic spectrometry. Controlling the applied frequency to the acousto-optic allows “on-line” and “off-line” spectral observations. Preliminary investigations included characterization of the behavior of the photomultiplier tube (PMT) signal output at various acoustic frequencies and applied powers to verify the applicability of the system. Low-rate (0.1 Hz) frequency modulation was performed to successfully test the applicability of the background-corr

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Spyrou, Evangelos D., Theocharis Tsenis, and Vassilios Kappatos. "Acousto-ultrasonic analysis of defects in composite specimens used in transportation domain." Journal of Measurements in Engineering 9, no. 2 (2021): 117–27. https://doi.org/10.5281/zenodo.5985533.

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Metal parts have recently been substituted with composite in the transport industry due to their characteristics, which include increased strength, stiffness and reduced weight. Acousto-ultrasonics is an inspection technique, which combines the acoustic emission methodology with ultrasonic simulation of stress waves to assess defect states in materials. Acousto-ultrasonics belong to the family of inspection tools, which emerge to identify and measure occurred damage or decay state of transportation modes and infrastructure. In this paper, we attempt to detect defects by performing initial expe

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Ebrahimkhanlou, Arvin, Melanie Schneider, Brennan Dubuc, and Salvatore Salamone. "A Deep Learning Framework for Acoustic Emission Sources Localization and Characterization in Complex Aerospace Panels." Materials Evaluation 79, no. 4 (2021): 391–400. http://dx.doi.org/10.32548/2021.me-04179.

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This paper presents a data-driven approach based on deep stacked autoencoders for the localization and characterization of acoustic emission sources in complex aerospace panels. The approach leverages the multimodal and dispersive reverberations of acoustic emissions. The approach is validated by Hsu-Nielsen pencil lead break tests on a fuselage section of a Boeing 777 instrumented with a single piezoelectric sensor.

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SATOH, Takashi, and Xinglin LEI. "Acoustic Emission." Zisin (Journal of the Seismological Society of Japan. 2nd ser.) 61, Supplement (2009): 535–40. http://dx.doi.org/10.4294/zisin.61.535.

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Broyles, Jonathan M. "The building material renaissance: A review of innovative low-carbon, healthy, and acoustically viable building materials." Journal of the Acoustical Society of America 156, no. 4_Supplement (2024): A28. https://doi.org/10.1121/10.0034991.

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With the pressing need to curb carbon emissions in buildings, architects and designers are increasingly determining low-carbon mitigation strategies across all building disciplines. One solution is the selection of novel low-carbon construction materials, often composed of recycled materials, bio-based products, or wastes. These new building materials are commonly manufactured without harmful chemicals, thereby making the building safer for its occupants. Furthermore, many of the building materials have acoustic benefits, such as improved sound absorption at mid-frequencies. While this new era

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García Plaza, Eustaquio, Pedro Jose Núñez López, and A. R. Martin. "Evaluation of On-Line Signals for Roundness Monitoring." Advanced Materials Research 498 (April 2012): 85–90. http://dx.doi.org/10.4028/www.scientific.net/amr.498.85.

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The cutting forces, mechanical vibration and acoustic emission signals obtained using dynamometer, accelerometer, and acoustic emissions sensors have been extensively used to monitor several aspects of the cutting processes in automated machining operations. This study assesses the significance of these on-line signals for the real-time monitoring and diagnosis of the roundness error in automated cylindrical turning processes. The system developed is based on predictive models obtained by regression techniques employing the orthogonal components of the cutting forces, mechanical vibration and

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Shanbhag, Vignesh V., Thomas J. J. Meyer, Leo W. Caspers, and Rune Schlanbusch. "Defining acoustic emission-based condition monitoring indicators for monitoring piston rod seal and bearing wear in hydraulic cylinders." International Journal of Advanced Manufacturing Technology 115, no. 9-10 (2021): 2729–46. http://dx.doi.org/10.1007/s00170-021-07340-8.

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AbstractFluid leakage from hydraulic cylinders is a major concern for the offshore industries as it directly affects hydraulic cylinder energy efficiency and causes environmental contamination. There have been attempts made in literature to develop robust condition monitoring techniques for hydraulic cylinders. However, most of these studies were performed to identify degradation of single components. Therefore, in this study, the aim is to monitor degradation of multiple components simultaneously in hydraulic cylinders using acoustic emissions. Experiments performed consist of three test phas

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Lee, Min Rae, and Joon Hyun Lee. "A Study on Characteristics of Leak Signals of Pipeline Using Acoustic Emission Technique." Solid State Phenomena 110 (March 2006): 79–88. http://dx.doi.org/10.4028/www.scientific.net/ssp.110.79.

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This study presents an approach to leak detection of pipeline review in terms of theoretical analysis such as acoustics and hydromechanics that should be accompanied by explanation of leakage. The acoustic emission signals during leak from circular hole of different geometries were studied both analytically and experimentally. The relationships between acoustic parameters and fluid mechanical parameters also were derived analytically. A quadrupole aerodynamic model was applied for the analysis of leak from the circular hole. Computer simulation results demonstrate the effectiveness of the prop

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Kasess, Christian H., Thomas Maly, Piotr Majdak, and Holger Waubke. "Effects of rumble strip parameters on acoustics, vibration, and perception." Acta Acustica 5 (2021): 54. http://dx.doi.org/10.1051/aacus/2021047.

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Rumble strips aim to alert the driver of dangerous situations via acoustic and tactile stimulation. They can, however, also lead to increased noise in the surroundings. Strip parameters and the vehicle type determines the size of these acoustic and vibratory effects. In our work, 16 rumble strip types (including strips with irregular spacing) were evaluated with respect to their effects on acoustics, vibration, and perception. Interior and exterior emissions caused by controlled pass-overs of a car and a truck were recorded. Annoyance, urgency, and reaction time of 16 listeners were tested in

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Ayarkwa, J., Y. Hirashima, K. Ando, and Y. Sasaki. "Monitoring Acoustic Emissions from Finger-Joints from Tropical African Hardwoods for Predicting Ultimate Tensile Strength." Holzforschung 55, no. 6 (2001): 652–60. http://dx.doi.org/10.1515/hf.2001.106.

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Summary The patterns of acoustic emissions generated during tension test of finger-joints from three tropical African hardwoods, Obeche (Triplochiton scleroxylon), Makore (Tieghemella heckelii) and Moabi (Baillonella toxisperma) were evaluated to assess their potential usefulness for non-destructively predicting ultimate tensile strength. The acoustic emission patterns generated were observed to differ depending on the type of finger profile and the wood species. Regression coefficients from cumulative acoustic emission count versus applied stress squared functions also varied with the profile

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Koshevaya, S., N. Makarets, V. Grimalsky, A. Kotsarenko, and R. Perez Enríquez. "Spectrum of the seismic-electromagnetic and acoustic waves caused by seismic and volcano activity." Natural Hazards and Earth System Sciences 5, no. 2 (2005): 203–9. http://dx.doi.org/10.5194/nhess-5-203-2005.

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Abstract. Modeling of the spectrum of the seismo-electromagnetic and acoustic waves, caused by seismic and volcanic activity, has been done. This spectrum includes the Electromagnetic Emission (EME, due to fracturing piezoelectrics in rocks) and the Acoustic Emission (AE, caused by the excitation and the nonlinear passage of acoustic waves through the Earth's crust, the atmosphere, and the ionosphere). The investigated mechanism of the EME uses the model of fracturing and the crack motion. For its analysis, we consider a piezoelectric crystal under mechanical stresses, which cause the uniform

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Oh, Kwang Hwan, Jun Ho Jang, C. K. Jung, and Kyung Seop Han. "Detection and Evaluation of Localized Damage under Creep-Fatigue Loading at 1000°F Using Acoustic Emission Technique." Solid State Phenomena 110 (March 2006): 45–54. http://dx.doi.org/10.4028/www.scientific.net/ssp.110.45.

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Acoustic emission (AE) technique was applied as a non-destructive test method to detect and evaluate the localized damage at high temperature environment. The creep-fatigue crack growth tests were carried out with the acquisition of AE signal at 1000°F. Under trapezoidal waveform loadings, AE results showed different features according to each damage mode. During the creep period, low and steady emissions were shown, while emissions were burst and high counts rate was recorded during the fatigue loading. Based on these characteristics, damage contribution was expressed in terms of acoustic emi

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Shrivastava, Sharad, and Ravi Prakash. "Future research directions with Acoustic Emission and Acousto Ultrasonic technique." International Journal of Biomedical Engineering and Technology 6, no. 4 (2011): 375. http://dx.doi.org/10.1504/ijbet.2011.041775.

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Crivelli, Davide, Mark Eaton, Matthew Pearson, Karen Holford, and Rhys Pullin. "Chebyshev descriptors for SHM with acoustic emission and acousto ultrasonics." International Journal of Structural Integrity 5, no. 3 (2014): 202–13. http://dx.doi.org/10.1108/ijsi-04-2014-0013.

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Purpose – The purpose of this paper is to study the feasibility on the use of alternative parameters for representing acoustic emission (AE) and acousto-ultrasonic (AU) signals, using a wavelet-based approach and the computation of Chebyshev moments. Design/methodology/approach – Two tests were performed, one on AE artificial signals generated on a CFRP plate and one on an AU setup used for actively detecting impact damage. The waveforms were represented using a data reduction technique based on the Daubechies wavelet and an image processing technique using Chebyshev moments approximation, to

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