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Optimization of Dissipative Mufflers 消声消声器的优化
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-09-18 DOI: 10.1134/S1063771024601730
A. I. Komkin, A. I. Bykov, L. S. Karnaukhova
{"title":"Optimization of Dissipative Mufflers","authors":"A. I. Komkin,&nbsp;A. I. Bykov,&nbsp;L. S. Karnaukhova","doi":"10.1134/S1063771024601730","DOIUrl":"10.1134/S1063771024601730","url":null,"abstract":"<div><p>The method of selecting the configuration of dissipative mufflers with the required acoustic efficiency is considered. A specific feature of the approach is the use of an integral indicator of acoustic efficiency and dimensionless geometric parameters. The studies were carried out using finite element calculations. In the finite element model of dissipative mufflers, the acoustic characteristics of a fibrous sound-absorbing material obtained from experimental studies were used<i>.</i></p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 3","pages":"570 - 577"},"PeriodicalIF":0.9,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142266950","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
Inclined Crack Quantification of Plate-Like Structures Based on Circular Sensor Array and Lamb Waves 基于环形传感器阵列和 Lamb 波的板状结构倾斜裂缝量化技术
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-09-18 DOI: 10.1134/S1063771024602097
Z. Wang, Y. Yan, Z. Gao, B. Shi
{"title":"Inclined Crack Quantification of Plate-Like Structures Based on Circular Sensor Array and Lamb Waves","authors":"Z. Wang,&nbsp;Y. Yan,&nbsp;Z. Gao,&nbsp;B. Shi","doi":"10.1134/S1063771024602097","DOIUrl":"10.1134/S1063771024602097","url":null,"abstract":"<p>Cracks are one of the most common damages to thin plates. Therefore, rapid and accurate detection of cracks is of great significance in the nondestructive testing of thin plates. Most existing nondestructive testing technologies focus on crack localization rather than the quantification of the crack length and orientation. Therefore, this paper proposes a damage index, considering the wave attenuation during propagation, to quantify the crack length and orientation. Lamb waves are transmitted and received by a circular sensor array. Based on the abnormal reflection of the A0 mode of Lamb waves, the reflections at cracks are extracted by the Hilbert transform. The influence of the crack length and orientation are studied parametrically, and the relations between the proposed damage index and crack length and angle are given based on regression analysis<i>.</i></p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 3","pages":"560 - 569"},"PeriodicalIF":0.9,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269792","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
Bandgap Mechanism of Phonon Crystals Coupled to Acoustic Black Holes 与声波黑洞耦合的声子晶体的带隙机制
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-09-18 DOI: 10.1134/S106377102360078X
Z. Boqiang, Z. Qiangqiang, H. Qingwen, F. Tianpei, X. Gao, J. Xin
{"title":"Bandgap Mechanism of Phonon Crystals Coupled to Acoustic Black Holes","authors":"Z. Boqiang,&nbsp;Z. Qiangqiang,&nbsp;H. Qingwen,&nbsp;F. Tianpei,&nbsp;X. Gao,&nbsp;J. Xin","doi":"10.1134/S106377102360078X","DOIUrl":"10.1134/S106377102360078X","url":null,"abstract":"<p>In this study, phonon crystal structures embedded in acoustic black holes are discussed. The low-frequency band gap is widened by exploiting the low-frequency, broadband and multimode properties of the acoustic black hole. The energy band properties of the acoustic crystal structure embedded in an acoustic black hole are calculated by means of a finite element method. The mechanism of band gap generation is investigated. The vibration transfer characteristics of finite period structures are analyzed. The influence of the structural parameters of the acoustic black hole is analyzed. The results show that the acoustic crystal structure embedded in an acoustic black hole has multiple band gaps in the 500 Hz band and the band gap coverage is increased to 45.18%. The starting bandgap is 16.10% lower than before embedding in the acoustic black hole and the width of the first bandgap expands to 173.03% of that before embedding in the acoustic black hole. The onset and termination frequencies of the first band gap are mainly determined by the vibrational modes of the scatterer and the acoustic black hole structure. The vibrational transfer of the finite period structure is analyzed and shows good damping characteristics in the bandgap interval. Finally, vibration experiments verify the vibration damping effect of the proposed coupled acoustic black hole phononic crystal, and the relevant findings of this paper can be used in the vibration damping design of plate structures, enriching the experience of research related to acoustic black holes<i>.</i></p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 3","pages":"453 - 464"},"PeriodicalIF":0.9,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142266940","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
Erratum to: Study on Impact of Variable Thermal Conductivity or Laser Pulse on Reflected Elastic Waves in a Semiconductor Medium 勘误：关于半导体介质中不同导热系数或激光脉冲对反射弹性波影响的研究
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-09-18 DOI: 10.1134/S1063771024030011
Ihtisham Ullah, Maaz Ali Khan, S. M. Abo-Dahab, Adiya Dar, M. Rafiq Sial, Mohamed Daher Albalwi, Adnan Jahangir
{"title":"Erratum to: Study on Impact of Variable Thermal Conductivity or Laser Pulse on Reflected Elastic Waves in a Semiconductor Medium","authors":"Ihtisham Ullah,&nbsp;Maaz Ali Khan,&nbsp;S. M. Abo-Dahab,&nbsp;Adiya Dar,&nbsp;M. Rafiq Sial,&nbsp;Mohamed Daher Albalwi,&nbsp;Adnan Jahangir","doi":"10.1134/S1063771024030011","DOIUrl":"10.1134/S1063771024030011","url":null,"abstract":"","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 3","pages":"592 - 592"},"PeriodicalIF":0.9,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412394","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
Real-Time Detection and Synergistic Effect of Acoustic Cavitation Excited by Pulse HIFU Based on Self-Sensing Ultrasound 基于自感超声的脉冲 HIFU 激发声空化的实时检测和协同效应
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-09-18 DOI: 10.1134/S1063771024601389
Y. Xu, C. Liu, Q. Cao, Y. Li
{"title":"Real-Time Detection and Synergistic Effect of Acoustic Cavitation Excited by Pulse HIFU Based on Self-Sensing Ultrasound","authors":"Y. Xu,&nbsp;C. Liu,&nbsp;Q. Cao,&nbsp;Y. Li","doi":"10.1134/S1063771024601389","DOIUrl":"10.1134/S1063771024601389","url":null,"abstract":"<p>High-intensity focused ultrasound (HIFU) is widely used in the treatment of benign and malignant tumors due to its advantages of noninvasiveness and high therapeutic efficiency. However, how to improve the efficiency of heat deposition in a short period of time is a key problem during HIFU thermal ablation. The acoustic cavitation excited by pulse HIFU has been proven to achieve HIFU efficiency enhancement. However, the real-time monitoring of acoustic cavitation is still an issue. In this study, a real-time detection method of acoustic cavitation is established based on self-sensing ultrasound, and the synergistic effect of acoustic cavitation excited by pulse HIFU is researched. The influences of the output power, pulse duration, irradiation depth on cavitation duration are respectively discussed by using the established cavitation detection method compared passive cavitation detection (PCD). The relationship between cavitation intensity and synergistic effect is discussed. The results have shown that the cavitation detection can real-time measure cavitation duration compared with PCD. In addition, during the cavitation detection of pulse HIFU, the synergistic effect of acoustic cavitation is obvious in HIFU ablation<i>.</i></p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 3","pages":"476 - 486"},"PeriodicalIF":0.9,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142266942","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
Quantitative Assessment of the Efficiency of Adaptive Spatial Processing Algorithms in Detecting and Tracking the Low-Noise Underwater Vehicles in Various Shipping Conditions 定量评估自适应空间处理算法在各种航运条件下探测和跟踪低噪声水下航行器的效率
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-09-18 DOI: 10.1134/S1063771024601626
A. I. Mashoshin, V. S. Melkanovich
{"title":"Quantitative Assessment of the Efficiency of Adaptive Spatial Processing Algorithms in Detecting and Tracking the Low-Noise Underwater Vehicles in Various Shipping Conditions","authors":"A. I. Mashoshin,&nbsp;V. S. Melkanovich","doi":"10.1134/S1063771024601626","DOIUrl":"10.1134/S1063771024601626","url":null,"abstract":"<p>The article describes the methodology and presents the results of a model quantitative assessment of the efficiency of solving the problem of detecting and tracking a low-noise underwater object using three algorithms for spatial signal processing at the output of a multielement array—the nonadaptive Bartlett algorithm, the Capon algorithm, and the Capon algorithm, combined with a projection procedure for limiting the signal power of strong local sources.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 3","pages":"513 - 520"},"PeriodicalIF":0.9,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142266944","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
Correlation Iterative Method of Acoustic Tomography with Incoherent Field Sources 具有非相干场源的声学断层成像相关迭代法
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-07-15 DOI: 10.1134/S1063771023601000
K. V. Dmitriev
{"title":"Correlation Iterative Method of Acoustic Tomography with Incoherent Field Sources","authors":"K. V. Dmitriev","doi":"10.1134/S1063771023601000","DOIUrl":"10.1134/S1063771023601000","url":null,"abstract":"<p>A method is proposed for reconstructing the acoustic parameters of a medium by iterative processing of the coherence matrices of the acoustic field of random sources, for some of which their power density is known. The possibilities of increasing the stability and accelerating the convergence of the method are discussed. The reconstruction results are compared with the functional-analytical approach based on the processing of the scattering amplitude<i>.</i></p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 2","pages":"209 - 219"},"PeriodicalIF":0.9,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141720302","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
Flexibly Steering of Self-Collimation Beam in Two-Dimensional Sonic Crystals 在二维声波晶体中灵活转向自准直光束
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-07-15 DOI: 10.1134/S1063771022600346
F. Shen, J. Deng, Y. Zhu
{"title":"Flexibly Steering of Self-Collimation Beam in Two-Dimensional Sonic Crystals","authors":"F. Shen,&nbsp;J. Deng,&nbsp;Y. Zhu","doi":"10.1134/S1063771022600346","DOIUrl":"10.1134/S1063771022600346","url":null,"abstract":"<p>Almost no diffraction broadening of self-collimation beams and their easy crossing with low crosstalk offer new opportunities for acoustic wave manipulation. Here, we flexibly steer the self-collimation beam based on the total internal reflection of an airborne square lattice sonic crystal. The properly designed crystal/air interface may serve well as a total internal reflection mirror of the self-collimation beam, with which we are able to achieve the highly controllable beam reversal, snaking and crossing. Our scheme can be extended to more interesting beam steering, and have potential applications in constructing high-density integrated acoustic circuits.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 2","pages":"270 - 277"},"PeriodicalIF":0.9,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141720331","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
Characteristics of the Scalar Wavenumber-Frequency Spectrum of Wall Pressure Fluctuations in a Zero-Pressure Gradient Turbulent Boundary Layer 零压力梯度湍流边界层中壁压波动的标量波数-频率谱特征
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-07-15 DOI: 10.1134/S106377102460150X
E. B. Kudashev, L. R. Yablonik
{"title":"Characteristics of the Scalar Wavenumber-Frequency Spectrum of Wall Pressure Fluctuations in a Zero-Pressure Gradient Turbulent Boundary Layer","authors":"E. B. Kudashev,&nbsp;L. R. Yablonik","doi":"10.1134/S106377102460150X","DOIUrl":"10.1134/S106377102460150X","url":null,"abstract":"<p>The study analyzes the basic properties of the scalar wavenumber-frequency spectrum of turbulent pressures, representing the total energy of the wave components of the turbulent pressure field with a given wave vector modulus. Consideration of the scalar spectrum, which has independent applied significance, makes it possible to visualize the energy distribution of turbulent pressures in a wide range of frequencies and wave numbers. Based on well-known vector wave field models, relations are proposed for estimating the relative scalar spectrum. The degree and nature of the parametric influence of the Mach and Reynolds numbers are determined.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 2","pages":"360 - 367"},"PeriodicalIF":0.9,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141720338","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
Experimental Study of Slow Sound Speed Relaxation in Carbonate Rocks 碳酸盐岩中慢声速松弛的实验研究
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-07-15 DOI: 10.1134/S1063771024601638
A. V. Lebedev, S. A. Manakov
{"title":"Experimental Study of Slow Sound Speed Relaxation in Carbonate Rocks","authors":"A. V. Lebedev,&nbsp;S. A. Manakov","doi":"10.1134/S1063771024601638","DOIUrl":"10.1134/S1063771024601638","url":null,"abstract":"<div><p>The results of integrated studies of the slow relaxation of the sound speed in structurally inhomogeneous materials after vibratory action with a finite strain amplitude are presented. The results were obtained using an experimental setup created for these studies, which ensured highly accurate measurements of the linear and nonlinear acoustic characteristics of various materials. The results of an experimental study of relaxation in carbonate rock, which is a structurally inhomogeneous material with a complex system of internal relationships, are presented. The measurements made it possible to determine the dependence of the relaxation parameters on the amplitude and time of excitation, as well as the effects caused by the finite amplitude of the probing wave. The results are interpreted, and effects that have not received an exhaustive explanation are noted.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 2","pages":"368 - 386"},"PeriodicalIF":0.9,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141722275","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
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