Acoustical Physics最新文献

Physical Modeling of the Method of Coherent Probing of Low-Contrast Bottom Layers in a Laboratory Tank 实验室水槽中低对比度底层相干探测方法的物理建模

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771024601821

V. I. Kalinina, P. N. Vyugin, I. A. Kapustin

{"title":"Physical Modeling of the Method of Coherent Probing of Low-Contrast Bottom Layers in a Laboratory Tank","authors":"V. I. Kalinina, P. N. Vyugin, I. A. Kapustin","doi":"10.1134/S1063771024601821","DOIUrl":"10.1134/S1063771024601821","url":null,"abstract":"<div><p>Under laboratory conditions, experimental verification of the developed algorithms for reconstructing low-contrast bottom layers during their coherent sensing was carried out. The algorithms use parametric models for generating signals reflected from a layered half-space in the form of a set of elastic layers. To solve the problem at the Department of Acoustics of Nizhny Novgorod State University, an experimental setup was created for the formation, emission, and reception of high-resolution sound pulses reflected from a set of elastic layers placed in a tank of water. The experimental study showed the possibility of using the coherent sensing method for layered media with relatively similar acoustic parameters. Processing of the data obtained resulted in good agreement between the developed computational model of probing acoustic pulse signals reflected from a layered bottom and the physical modeling data. It is shown that analysis of the plane of the geoacoustic parameters of a specific problem using the developed numerical model makes it possible to assess the capabilities of a promising method for coherent diagnostics of low-contrast bottom layers.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"659 - 669"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737327","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

Influence of the Metal Structure and Plastic Deformation on the Nonlinear Acoustic Parameter 金属结构和塑性变形对非线性声学参数的影响

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S1063771024601468

A. V. Vanyagin, A. V. Ilyakhinskii, V. M. Rodyushkin

{"title":"Influence of the Metal Structure and Plastic Deformation on the Nonlinear Acoustic Parameter","authors":"A. V. Vanyagin, A. V. Ilyakhinskii, V. M. Rodyushkin","doi":"10.1134/S1063771024601468","DOIUrl":"10.1134/S1063771024601468","url":null,"abstract":"<p>A practical task of testing samples of various metals using the principles of nonlinear acoustics is being solved. A surface acoustic wave (surfactant), whose propagation process, due to nonlinear effects, is accompanied by generation of a wave of doubled frequency, was used for testing. An experimental device is used to monitor the structural state of a metal sample by recording a change in the nonlinear acoustic parameter (NAP). To excite surfactants, a wedge transducer with a resonance frequency of 1 MHz was used. The transmitted wave was recorded with a wedge transducer with a resonance frequency of 2 MHz. It has been shown that the NAP for the tested materials in the initial state has different values not only for materials belonging to different classes, but also for materials belonging to the same structural class and having different chemical compositions (12Kh17G9AN4 and 12Kh18N10Т). A plastic deformation by 2% does not lead to a NAP change for the AMg6 alloy and 12Kh17G9AN4, 20Kh13N4G9, and 10KhSND steels. The NAP change by 2% as a result of a plastic deformation for the 12Kh18N10T and 08Kh17N4M3 stainless steels is caused by a change in their phase compositions associated with the martensitic transformation. The presented data on the change in the NAP from early stages of the elastoplastic deformation to a predestruction for AMg6 and 10KhSND steels demonstrate the possibility of using it as a prognostic criterion for the limiting state of the material.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 4","pages":"608 - 612"},"PeriodicalIF":0.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063771024601468.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737330","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

Sound Waves in a Medium with Resonance Inclusions of a Dipole Type 带有偶极型共振内含物的介质中的声波

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2024-11-27 DOI: 10.1134/S106377102460181X

N. G. Kanev, M. A. Mironov

引用次数: 0

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, H. Hu, K. Wang, 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

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

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