发布求助
文献互助 智能选刊 最新文献

Acoustical Physics最新文献

筛选
英文 中文
Reverse Design of Absorption Performance for Typical Underwater Acoustic Coatings Based on Neural Network 基于神经网络的典型水下声学涂层吸收性能反向设计
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771024601511
R. Zhu, H. Hu, K. Wang, H. Chen
{"title":"Reverse Design of Absorption Performance for Typical Underwater Acoustic Coatings Based on Neural Network","authors":"R. Zhu,&nbsp;H. Hu,&nbsp;K. Wang,&nbsp;H. Chen","doi":"10.1134/S1063771024601511","DOIUrl":"10.1134/S1063771024601511","url":null,"abstract":"<p>This paper presents a method for rapidly reverse designing the absorption performance of acoustic coatings, utilizing the principles of a concatenated deep neural network. It enables the swift acquisition of effective input parameters. By cascading a reverse neural network with pre-trained forward neural networks, a concatenated neural network is obtained. This network maps the absorption spectrum response to structural and material parameters, thereby resolving the nonuniqueness issue in traditional reverse design. The paper describes the detailed process of reverse designing the absorption performance of acoustic coatings and validates the correctness of the reverse design using finite element methods. A comparative analysis investigates the impact of different loss functions on result accuracy. The findings demonstrate that the proposed modified loss function algorithm significantly enhances precision compared to traditional direct reverse design. This advancement allows for the customization of acoustic coatings with specific acoustic properties, providing technical groundwork for vibration and noise reduction in underwater vehicles.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"745 - 758"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estimation of the Distance to a Local Inhomogeneity on an Acoustic Path in Shallow Water in the Presence of Background Disturbances 存在背景干扰时浅水区声学路径上局部不均匀性的距离估计
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771024602231
A. A. Lunkov, M. A. Shermeneva
{"title":"Estimation of the Distance to a Local Inhomogeneity on an Acoustic Path in Shallow Water in the Presence of Background Disturbances","authors":"A. A. Lunkov,&nbsp;M. A. Shermeneva","doi":"10.1134/S1063771024602231","DOIUrl":"10.1134/S1063771024602231","url":null,"abstract":"<div><p>We consider the problem of estimating the position of a local inhomogeneity on a stationary acoustic path between a single sound source and vertical receiving array in a shallow water waveguide in the presence of background disturbances. A local bottom rise and a soliton-like internal wave are chosen as model inhomogeneities. It is proposed to determine the distance from the source to the inhomogeneity by cepstral analysis of the amplitude of the first waveguide mode isolated on the array, with preliminary deformation of the frequency axis. Numerical modeling is used to study the stability of this approach in the presence of several local inhomogeneities or additional disturbances: bottom slope, background internal waves, wind waves, and bottom irregularities. Estimates of the signal-to-noise ratio required to implement the approach are pro-vided.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"683 - 695"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142736844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adjustable Acoustic Delay Line as a Phase Shifter 作为移相器的可调式声学延迟线
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771024601845
B. D. Zaitsev, I. A. Borodina, A. A. Teplykh, A. P. Semyonov
{"title":"Adjustable Acoustic Delay Line as a Phase Shifter","authors":"B. D. Zaitsev,&nbsp;I. A. Borodina,&nbsp;A. A. Teplykh,&nbsp;A. P. Semyonov","doi":"10.1134/S1063771024601845","DOIUrl":"10.1134/S1063771024601845","url":null,"abstract":"<p>An acoustic delay line consisting of two <i>Y</i>–<i>X</i>-cut lithium niobate plates 0.2 mm thick placed on top of each other was experimentally investigated. An interdigital transducer is located at the edge of each plate. An rf voltage (pulsed or continuous-wave) is fed to one transducer, which excites a piezoelectrically active acoustic wave with transverse–horizontal polarization propagating in the first plate. The electric field of this wave penetrates the second plate to excite an acoustic wave therein, which is converted into an electrical signal using the second interdigital transducer. The phase and delay time of the output signal can be changed by varying the distance between the transducers by shifting one plate relative to the other.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"613 - 618"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Variability of the Cavitation Threshold of Seawater under Natural Conditions 自然条件下海水空化阈值的可变性
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771024601419
N. P. Melnikov
{"title":"Variability of the Cavitation Threshold of Seawater under Natural Conditions","authors":"N. P. Melnikov","doi":"10.1134/S1063771024601419","DOIUrl":"10.1134/S1063771024601419","url":null,"abstract":"<div><p>The results of measuring cavitation thresholds and some hydrological and hydrochemical parameters of seawater in various areas of the World Ocean are presented and discussed. The stable temporal variability of the cavitation thresholds on time scales of several days is shown. The daily, semidaily, and other periodicities of changes in magnitude of cavitation thresholds are revealed.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"696 - 704"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142736845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lateral Movement of Particles in a Levitating Acoustic Field 悬浮声场中粒子的横向运动
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771022600401
Saurabh Yadav,  Arpan Gupta
{"title":"Lateral Movement of Particles in a Levitating Acoustic Field","authors":"Saurabh Yadav,&nbsp; Arpan Gupta","doi":"10.1134/S1063771022600401","DOIUrl":"10.1134/S1063771022600401","url":null,"abstract":"<p>Acoustic levitation is an interesting technique used for levitating small objects/materials using sound waves. In this study, lateral movement of levitating particles is demonstrated experimentally and numerically. The method can simultaneously move multiple particles and the paper demonstrates levitation for three particles. Initially, an ultrasonic tweezer with a resonance frequency of 40 kHz is used to levitate three particles of average weight of 0.15 mg each. The experimental design is based on numerical simulation. Further, the levitated particles are moved in a lateral direction using two ultrasonic tweezers setup by manipulating the phase of one of the tweezers using Arduino Nano. As evident by simulations, the movement takes place due to the interference of waves leading to the movement of pressure node. The lateral movement of particles can be controlled and even reversed by changing the phase difference<i>.</i></p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"635 - 640"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Combined Influence of Wind Waves and Internal Waves on the Coherence of Low-Frequency Acoustic Signals and the Efficiency of Their Spatial Processing in Shallow Water 风浪和内波对浅水区低频声学信号的相干性及其空间处理效率的共同影响
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771024601547
M. A. Raevskii, V. G. Burdukovskaya
{"title":"The Combined Influence of Wind Waves and Internal Waves on the Coherence of Low-Frequency Acoustic Signals and the Efficiency of Their Spatial Processing in Shallow Water","authors":"M. A. Raevskii,&nbsp;V. G. Burdukovskaya","doi":"10.1134/S1063771024601547","DOIUrl":"10.1134/S1063771024601547","url":null,"abstract":"<div><p>The combined influence of random internal waves and developed wind waves on the coherence and efficiency of spatial processing of narrowband acoustic signals in shallow water is studied analytically and numerically. A theoretical model is proposed for the correlation matrix of a multimode signal at the aperture of a horizontal array, using the difference in the spatiotemporal scales of acoustic field fluctuations caused by wind waves and internal waves. The results of numerical modeling for hydrological conditions in summer are presented. The array gain is analyzed for three spatial processing methods: phased array, optimal linear processing, and optimal quadratic processing. The main focus is on the dependence of the array gain on the intensity of wind waves and distance <i>R</i> between the source and the array. It is shown that, despite summer hydrology, wind waves can have a significant impact on the gain of a horizontal array over a wide range of distances <i>R</i> ~ 10–100 km.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"705 - 717"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rapid Estimation of the Sonic Boom Characteristics from Supersonic Passenger Aircraft in a Standard Atmosphere Based on Analytical Solutions: Cruise Mode 基于分析解决方案的标准大气中超音速客机音爆特性快速估算：巡航模式
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771024602395
A. O. Korunov, V. A. Gusev, V. S. Gorbovskoy
{"title":"Rapid Estimation of the Sonic Boom Characteristics from Supersonic Passenger Aircraft in a Standard Atmosphere Based on Analytical Solutions: Cruise Mode","authors":"A. O. Korunov,&nbsp;V. A. Gusev,&nbsp;V. S. Gorbovskoy","doi":"10.1134/S1063771024602395","DOIUrl":"10.1134/S1063771024602395","url":null,"abstract":"<div><p>A method is proposed for quickly estimating the sonic boom characteristics from supersonic passenger aircraft under standard atmospheric conditions. The piecewise linear temperature profile and absence of atmospheric wind make it possible to completely reduce the problem of the geometry of sonic boom wave propagation to an algebraic form. For acoustic pressure, an analytical solution is formulated using the nonlinear geometrical acoustics approach. The dependence of the geometry of sonic boom wave propagation on the cruising flight parameters of a supersonic passenger aircraft is analyzed. Under the conditions of SBPW (Sonic Boom Prediction Workshop) 2020, the overpressure signatures on the ground from the X-59 demonstrator were calculated.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"718 - 732"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Multielement Low-Frequency Ultrasonic Transducer as a Source of High-Intensity Focused Ultrasound in Air 作为空气中高强度聚焦超声源的多元件低频超声换能器
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771024601936
S. A. Asfandiyarov, S. A. Tsysar, O. A. Sapozhnikov
{"title":"A Multielement Low-Frequency Ultrasonic Transducer as a Source of High-Intensity Focused Ultrasound in Air","authors":"S. A. Asfandiyarov,&nbsp;S. A. Tsysar,&nbsp;O. A. Sapozhnikov","doi":"10.1134/S1063771024601936","DOIUrl":"10.1134/S1063771024601936","url":null,"abstract":"<p>The acoustic and electrical properties of a 128-element ultrasonic transducer designed to generate high-intensity focused ultrasound in air in the low-frequency ultrasonic range are investigated. To reduce parasitic grating maxima of the acoustic field, a spiral arrangement of piezoelectric elements on a spherical base was used. The operating frequency of the transducer was 35.5 kHz, and the diameter of the source and focal length were approximately 50 cm, significantly exceeding the wavelength (approximately 1 cm). This selection of parameters allowed for effective focusing, with localization of wave energy in a small focal region, thereby achieving extremely high levels of ultrasonic intensity. The parameters of the ultrasonic field were studied using a combined approach that included microphone recording of the acoustic pressure and measuring the acoustic radiation force acting on a conical reflector. Acoustic source parameters were determined from the two-dimensional spatial distribution of the acoustic pressure waveform, which was measured by scanning the microphone in a transverse plane in front of the source. Numerical modeling of nonlinear wave propagation was also used based on the Westervelt equation to simulate the behavior of intense waves. The acoustic pressure level reached 173 dB, with a focal spot size comparable to the wavelength.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"759 - 768"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063771024601936.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of Low-Frequency Acoustic Signals to Study Underwater Gas Seepage 应用低频声学信号研究水下气体渗流
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771024601742
D. A. Kosteev, N. A. Bogatov, A. V. Ermoshkin, I. A. Kapustin, A. A. Molkov, D. D. Razumov, M. B. Salin
{"title":"Application of Low-Frequency Acoustic Signals to Study Underwater Gas Seepage","authors":"D. A. Kosteev,&nbsp;N. A. Bogatov,&nbsp;A. V. Ermoshkin,&nbsp;I. A. Kapustin,&nbsp;A. A. Molkov,&nbsp;D. D. Razumov,&nbsp;M. B. Salin","doi":"10.1134/S1063771024601742","DOIUrl":"10.1134/S1063771024601742","url":null,"abstract":"<div><p>Remote sensing of seeps, the release of gas (mainly methane) from the seabed, is an urgent problem. The importance of detecting seeps in the Arctic shelf zone is constantly increasing due to degradation of underwater permafrost and the release of gas hydrates. Gas bubbles scatter underwater sound and their corresponding resonance frequencies are in the kilohertz range for seeps observed in nature. A promising method for detecting and studying seeps is probing with underwater sound near the denoted resonance frequency. This corresponds to a decrease in the operating frequency with respect to the traditional method of studying high-frequency sonars, so the proposed method will be classified as low-frequency in this study. This method expands the study area due to the low sound attenuation in water and the high scattering level near bubble resonances. The scattering strength was estimated taking into account collective interaction (group effects) of bubbles. The possibility of using low-frequency hydroacoustic systems to detect seeps is demonstrated using the results of a full-scale experiment using a simulated bubble jet as an example. A data processing method for detecting nonstationary scatterers is proposed.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"670 - 682"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Self-Contained Vertical Acoustic–Hydrophysical Measuring Systems Mollyusk-19 and Mollyusk-21 自给式垂直声学-水文物理测量系统 Mollyusk-19 和 Mollyusk-21
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771024602425
A. N. Rutenko, D. G. Kovzel, V. A. Gritsenko
{"title":"Self-Contained Vertical Acoustic–Hydrophysical Measuring Systems Mollyusk-19 and Mollyusk-21","authors":"A. N. Rutenko,&nbsp;D. G. Kovzel,&nbsp;V. A. Gritsenko","doi":"10.1134/S1063771024602425","DOIUrl":"10.1134/S1063771024602425","url":null,"abstract":"<p>The self-contained vertical acoustic–hydrophysical measuring systems Mollyusk-19 and Mollyusk-21 were developed to study spatiotemporal inhomogeneities in the sound field velocity and in modal structures of low-frequency sound fields and internal waves. This paper describes the circuit, structural, and software solutions for the main problem posed when developing new systems to improve their performance characteristics. The possibilities of applying these systems to solve the formulated problems was illustrated by the results of field measurements on the Posiet Bay shelf in the Sea of Japan.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"769 - 781"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信