Relevant bibliographies by topics / Acoustic filling

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Acoustic filling'

Author: Grafiati
Published: 28 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "Acoustic filling"

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Glover, Jennifer, and Dan O'Boy. "Acoustic space filling curve metamaterials for grazing flow in Jet engine inlets." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 6 (2021): 394–406. http://dx.doi.org/10.3397/in-2021-1458.

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Acoustic metamaterials research has grown exponentially in the past 10 years driven by the advances in manufacturing and an increased understanding of damaging environment noise. 2020 was the first noise reduction target as set by Advisory Council for Aircraft Research and Innovation in Europe with a relative 50% decrease. This was missed by current Jet engine noise control technology; however, metamaterials offer an encouraging alternative. Space Filling Curves (SFC) have the potential to provide a lightweight, thin, high performance acoustic liner. SFC have a history in mathematical geometry
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Glover, Jennifer, and Dan O'Boy. "Hybrid space filling curve metamaterials for transmissive flow in Jet Engine inlets." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 7 (2023): 491–502. http://dx.doi.org/10.3397/in_2022_0069.

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Acoustic metamaterials research has grown exponentially in the past 10 years driven by the advances in manufacturing and an increased understanding of damaging environment noise. 2050 was the first noise reduction target as set by Advisory Council for Aircraft Research and Innovation in Europe with a relative 65% decrease. This ambitions target will not be met by current engine noise control technology; however, metamaterials offer an encouraging alternative. Space Filling Curves (SFC) have the potential to provide a lightweight, thin, high performance acoustic liner. SFC have a history in mat
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Krishna, Arvind, Steven R. Craig, Chengzhi Shi, and V. Roshan Joseph. "Inverse design of acoustic metasurfaces using space-filling points." Applied Physics Letters 121, no. 7 (2022): 071701. http://dx.doi.org/10.1063/5.0096869.

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Acoustic metasurfaces are two-dimensional materials that impart non-trivial amplitude and phase shifts on incident acoustic waves at a predetermined frequency. While acoustic metasurfaces enable extraordinary wavefront engineering capabilities, they are not developed well enough to independently control the amplitude and phase of reflected and transmitted acoustic waves simultaneously, which are governed by their geometry. We aim to solve the inverse design problem of finding a geometry to achieve a specified set of acoustic properties. The geometry is modeled by discretizing the continuous sp
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Begum, Hasina, and Kirill V. Horoshenkov. "Acoustical Properties of Fiberglass Blankets Impregnated with Silica Aerogel." Applied Sciences 11, no. 10 (2021): 4593. http://dx.doi.org/10.3390/app11104593.

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It is known that aerogel impregnated fibrous blankets offer high acoustic absorption and thermal insulation performance. These materials are becoming very popular in various industrial and building applications. Although the reasons for the high thermal insulation performance of these materials are well understood, it is still largely unclear what controls their acoustic performance. Additionally, only a small number of publications to date report on the acoustical properties of fibrous blankets impregnated with powder aerogels. There is a lack of studies that attempt to explain the measured a
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Xu, Gui-yang, Chun-guang Wang, Shao-qing Hu, Jian-Liang Gong, and Zhe Deng. "Investigation on the Time Error of Detonation Acoustic in Process of Formation and Propagation." International Journal of Turbo & Jet-Engines 36, no. 4 (2019): 391–99. http://dx.doi.org/10.1515/tjj-2018-0011.

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Abstract The time error of detonation acoustic in process of detonation formation and propagation in a multi-cycle gas-liquid two-phase pulsed detonation engine is experimentally investigated. Results from the tests show that before the detonation wave escapes through the open-end of PDE tube, the maximum average arrival time error of detonation acoustic is achieved in the process of overdriven detonation. After detonation wave exists of PDE tube, arrival time error at 0 deg is greater than the other directivity angles in all distances and increases dramatically first and then almost stays at
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Huang, Hongpu, Zhenlin Ji, and Zhuoliang Li. "Influence of perforation and sound-absorbing material filling on acoustic attenuation performance of three-pass perforated mufflers." Advances in Mechanical Engineering 10, no. 1 (2018): 168781401774801. http://dx.doi.org/10.1177/1687814017748012.

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The finite element method is employed to calculate the transmission loss of three-pass perforated reactive and hybrid mufflers. The effects of perforated tubes and bulkheads on the transmission loss of three-pass reactive mufflers are investigated numerically. Two types of hybrid mufflers are considered, and the effects of sound-absorbing material filling and packed outlet tube on the acoustic attenuation performance of mufflers are analyzed. The perforations of the tubes and bulkheads and sound-absorbing material filling are demonstrated to have significant influence on the acoustic attenuati
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Metzenmacher, Michael, Alexander Beugholt, Dominik Geier, and Thomas Becker. "Combined Longitudinal and Surface Acoustic Wave Analysis for Determining Small Filling Levels in Curved Steel Containers." Sensors 22, no. 9 (2022): 3476. http://dx.doi.org/10.3390/s22093476.

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Measurement of the small filling levels in closed steel container systems is still a challenge. Ultrasound, however, is a sensitive and non-invasive technique and is suitable for online monitoring. This study describes a new ultrasonic sensor system for sensing small filling levels using longitudinal and surface acoustic wave analysis. The sensor system consists of one transducer for the longitudinal wave analysis and two transducers for the longitudinal and surface acoustic wave analysis. All transducers were mounted to the outer wall of the steel container, ensuring non-invasiveness, and a f
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Cabe, Patrick A., and John B. Pittenger. "Human sensitivity to acoustic information from vessel filling." Journal of Experimental Psychology: Human Perception and Performance 26, no. 1 (2000): 313–24. http://dx.doi.org/10.1037/0096-1523.26.1.313.

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LI, ZHENGWEI, ZHIWU ZU, BO ZHANG, and JIUCHUN YAN. "Cavitation Characteristics in Ultrasonic Soldering and the Erosion Effect." Welding Journal 103, no. 04 (2024): 160–74. http://dx.doi.org/10.29391/2024.103.023.

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In this work, the cavitation characteristics of the solder sonocapillary action during ultrasonic soldering were studied by a high-speed camera. The effects of ultrasonic power and time on the acoustic pressure, cavitation characteristics, and erosion effects were also investigated. Results showed that cavitation occurred throughout the entire sonocapillary action. Two kinds of bubble structures were observed. The steady bubbles had large sizes and long life periods. The transient bubbles had small sizes and short life periods. The steady bubbles preferentially appeared at the primary filling
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Bublikov, A. V., P. I. Pilov, N. S. Pryadko, Yu A. Papaika, and K. V. Ternova. "Automatic control of jet grinding on the basis of acoustic monitoring of mill operating zones." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 4 (2021): 29–34. http://dx.doi.org/10.33271/nvngu/2021-4/029.

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Purpose. Increasing the jet mill productivity by use of automatic control of the grinding chamber filling level based on the acoustic monitoring results of the jet grinding process. Methodology. Simulation is performed in MATLAB. Acoustic signals of the mill operating zones are used to determine the grinding process parameters. Findings. A simulation model of the automatic jet mill control system is created, which takes into account the inertia of material flows in the grinding chamber and classifier, as well as the main disturbing influences on the process of forming the mill output flow. To
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Dissertations / Theses on the topic "Acoustic filling"

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Філіпова, Н. Ю. "Дослідження роботи сферичного електропружного п’єзокерамічного перетворювача з акустичним заповненням". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/63903.

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Сучасні підводні електроакустичні перетворювачі набули досить складних конструкцій в зв’язку з технологічними прийомами закріплення, забезпечення електроізоляції, герметизації і необхідної міцності перетворювачів. Гідростатичний тиск являється одним з основних факторів, що впливає на ефективність, розміри, вартість перетворювача та можливості його використання. Отже, створення конструкції перетворювача, що протидіє зовнішньому гідростатичному тиску з врахуванням особливостей взаємодії механічних, акустичних та електричних полів, а також способів елекродування і використання електричного навант
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Chun-HsienChang and 張群賢. "Cracking Characterization of Dentine and Filling Composites Using Acoustic Emission." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/c8yjt4.

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Book chapters on the topic "Acoustic filling"

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Li, Langhua, Duwen Shen, and Qili Gan. "Application of Ultrasonic Nondestructive Testing Technology to the Horizontal Joint Slurry at the Bottom of Shear Wall." In Novel Technology and Whole-Process Management in Prefabricated Building. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-5108-2_39.

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AbstractUltrasonic nondestructive testing (NDT) technology has a wide range of applications in the connection nodes of prefabricated building components. It is mainly used to test the quality of the connection nodes of prefabricated building components, such as filling degree, anchorage of steel bars, etc. This paper mainly introduces the detection of the filling degree of the shear wall bottom joint slurry. By discriminating acoustic parameters such as “sound velocity, amplitude, waveform” in ultrasonic detection method, the fullness of grouting is detected. According to the examples, the ope
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Yu, Z., H. Jing, Y. Gao, X. Wei, and A. Wang. "Effect of Carbon Nanotubes on the Acoustic Emission Characteristics of Cemented Rockfill." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_54.

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AbstractThe use of carbon nanotubes (CNTs) to reinforce cemented rockfill is attracting considerable interest due to the remarkable improvement in performance and the extremely low dose of the added nanomaterial. To reveal the enhancement mechanism of the CNTs on cemented rockfill, the acoustic emission (AE) characteristics of cemented rockfill specimens during the Brazilian split test were investigated. The results demonstrated that CNTs improved tensile strength by 17.2% and decreased the AE count. The nucleation and micropore-filling effects of the CNTs promoted the cement hydration reactio
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Zheng, Feidong, Xueyi Li, Fan Zhang, and Ping Mu. "Evolution of Undular Surges in a Navigation Channel." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_35.

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AbstractAn undular surge is a secondary wave characterized by free-surface undulations over the body of a positive wave. The formation of undular surges is strongly linked to the departure of pressure distribution from hydrostatic due to the combined effects of wave nonlinearity and dispersion. In navigation channels, undular surges may be generated by the filling or emptying operation of lock chambers. The propagation of undular surges is associated with the periodic flow variations, and therewith they can cause impulse motion responses of navigation ships and even navigation accidents in som
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Hu, Yanyan, Chungzeng Lu, Chien-Sun Kuo, and Anthony N. DeMaria. "Doppler Assessment of the Effects of Premature Ventricular Depolarization upon Left Ventricle Filling and Ejection." In Acoustical Imaging. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2958-3_79.

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Cheng, Lichao, Bin Lu, Wengui Li, et al. "Study on Compression Mechanical Properties and Acoustic Emission Characteristics of Roadside Filling Body." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220914.

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In order to study the compressive strength and crack evolution form of roadside filling body, the strength and acoustic emission of filling body under different loading rates were studied by using PCI-2 acoustic emission tester and pressure testing machine. The crack evolution process of the specimen under different conditions was analyzed, and the compression failure mode, failure mode and internal energy change law of the filling material were obtained, and then the deformation failure and crack evolution law of the filling material were mastered. The results show that the mechanical propert
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Francino, Raíssa Paes, Kathisuemy Marim, Maria Fernanda Bissa Oliveira, et al. "Post cholecystectomy syndrome caused by cystic duct remnant: A case report." In INNOVATION IN HEALTH RESEARCH ADVANCING THE BOUNDARIES OF KNOWLEDGE. Seven Editora, 2023. http://dx.doi.org/10.56238/innovhealthknow-011.

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CASE PRESENTATION: Patient, M.R., male, 51 years old, attended the general surgery outpatient clinic of UNESC complaining of bulging in the right inguinal region and pain on exertion with results of imaging studies suggesting the presence of cholelithiasis. Previous pathological history of laparotomy cholecystectomy 12 years ago, due to diagnosis of acute lithiasic cholecystitis. In view of the case, ultrasonography of the total abdomen was requested, which showed echogenic images with posterior acoustic leftover in the gallbladder topography. In view of the above, computed tomography of the u
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Fox, Raymond. "Lesson Architecture." In The Use of Self. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780190616144.003.0013.

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This remark says it clearly: the best teaching sets learners on their own path to discovery. Appeal to students’ hearts as well as filling their heads; it is sustenance for their professional journey. Effective, engaging, and enjoyable lessons do not happen automatically. They take effort. They demand attention to striking the right balance between content and process, to meeting the requirements of the curriculum and the distinctive needs of students. Every course is different. Every class is organic. Every group of students is distinctive. A tightly framed lesson leaves room for the unexpect
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Conference papers on the topic "Acoustic filling"

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Song, Mengxiao, Tingwen Liu, Quangang Li, Duohe Ma, Ming Sun, and Ling Tian. "Zero-Shot Cross-Domain Slot Filling with Retrieval Augmented In-Context Learning." In ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2025. https://doi.org/10.1109/icassp49660.2025.10889405.

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Huang, Peijie, Weizhen Li, Yuhong Xu, and Junbao Huang. "Enhancing Cross-Domain Slot Filling with Joint LLM Data Generation and Data Curation." In ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2025. https://doi.org/10.1109/icassp49660.2025.10890053.

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Li, Qingling, Wushao Wen, and Jinghui Qin. "Boundary-Driven Table-Filling with Cross-Granularity Contrastive Learning for Aspect Sentiment Triplet Extraction." In ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2025. https://doi.org/10.1109/icassp49660.2025.10888888.

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Glover, J. N., and D. J. O'Boy. "A REVIEW OF ACOUSTIC SPACE FILLING CURVE METAMATERIALS FOR JET ENGINE INLETS." In ACOUSTICS 2020. Institute of Acoustics, 2020. http://dx.doi.org/10.25144/13338.

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Glover, J. N., and D. J. O'Boy. "A REVIEW OF ACOUSTIC SPACE FILLING CURVE METAMATERIALS FOR JET ENGINE INLETS." In ACOUSTICS 2020. Institute of Acoustics, 2020. http://dx.doi.org/10.25144/13338.

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Hansen, O., and R. M. Holt. "The effect of pore filling clay on permeability and acoustic velocities." In 58th EAEG Meeting. EAGE Publications BV, 1996. http://dx.doi.org/10.3997/2214-4609.201408894.

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Oshima, Hiroko, Hilmi Bin Hela Ladin, Akihito Ito, Nobutaka Tsujiuchi, and Takayuki Koizumi. "Placement Technique of Measurement Points for Inverse Acoustic Analysis." In JSAE/SAE 2015 Small Engine Technologies Conference & Exhibition. Society of Automotive Engineers of Japan, 2015. http://dx.doi.org/10.4271/2015-32-0747.

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<div class="section abstract"><div class="htmlview paragraph">This paper describes a measurement points' placement technique for the sound source identification using inverse acoustic analysis. In order to reduce noise in NVH problem for various kinds of machines including small size engine, it is necessary to identify the sound source. The inverse acoustic analysis is a technique that is effective for the sound source identification.[<span class="xref">1</span>,<span class="xref">2</span>] The inverse acoustic analysis identifies a surface vibration of an o
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Cofer, Cameron G., Friedrich Bielert, and Thomas Kullmann. "Durability, Acoustic Performance and Process Efficiencies of Absorbent Fibers for Muffler Filling." In Noise & Vibration Conference & Exposition. SAE International, 1999. http://dx.doi.org/10.4271/1999-01-1655.

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Wang, Chia-Fu, Chia-Nien Tsai, I.-Ling Chang, and Lien-Wen Chen. "Wideband Acoustic Luneburg Lens Based on Graded Index Phononic Crystal." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52927.

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The present study proposes a wideband two-dimensional Luneburg lens using graded phononic crystals (GPCs). We present a method to broaden the range of operation frequency of the Luneburg lens based on GPCs. The GPCs is composed of circular cylindrical rods with triangular lattice air background. In long wavelength limit assumption, periodic structure behaves like a homogeneous medium since dispersion relations is almost linear. The effective refractive index can be tuned by adjusting the filling ratio. The plan wave expansion method is utilized to calculate the band structures of the locally G
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Huff, Norman T. "The Impact of Fiber Filling Density Variation on the Acoustic Performance of Silencers." In SAE 2005 Noise and Vibration Conference and Exhibition. SAE International, 2005. http://dx.doi.org/10.4271/2005-01-2367.

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