Acoustical Physics最新文献

Experimental Modeling of Imaging Artifacts in Ultrasound Examination of Human Lungs 人体肺部超声检查中成像伪影的实验建模

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2025-09-09 DOI: 10.1134/S1063771024602413

S. D. Sorokin, M. V. Ryabkov, S. A. Tsysar, O. A. Sapozhnikov, V. A. Khokhlova

{"title":"Experimental Modeling of Imaging Artifacts in Ultrasound Examination of Human Lungs","authors":"S. D. Sorokin, M. V. Ryabkov, S. A. Tsysar, O. A. Sapozhnikov, V. A. Khokhlova","doi":"10.1134/S1063771024602413","DOIUrl":"10.1134/S1063771024602413","url":null,"abstract":"<div><p>To reveal the nature of artifacts in ultrasound images of human lungs (so-called B-lines), experimental phantoms were created consisting of a silicone layer for acoustic imitation of intercostal muscles, a layer formed with finely pored foam burn dressing imitating healthy or edematous lung tissue, a foam dressing fragment, a mandarin juice sac, and a drop of ultrasound gel imitating the structures of the lung tissue. Ultrasound images were recorded with a linear ultrasonic probe L7-4 connected to a Verasonics V-1 scanner. Additionally, an image of a mandarin juice sac located on the surface of the water was constructed using the synthetic aperture method with an Olympus focused piezoelectric transducer. The resulting echograms were compared with images recorded in clinical cases of pulmonary pathologies. It is shown that the appearance of B-lines is associated with the effects of multiple reverberation in liquid-filled structures imitating lung tissue, while their brightness and width on the echogram depend on the characteristic size of the internal structure of the phantom.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"479 - 487"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021636","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

Acoustic Flows in a Hemispherical Fluid Drop on a Vibrating Substrate 振动基板上半球形液滴中的声波流动

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2025-09-09 DOI: 10.1134/S1063771025600093

P. V. Lebedev-Stepanov

引用次数: 0

Axisymmetric Waves in a Waterlike Cylinder 类水圆柱体中的轴对称波

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2025-09-09 DOI: 10.1134/S1063771025600342

M. A. Mironov, P. A. Pyatakov, O. A. Savitsky, S. A. Shulyapov

引用次数: 0

High-Quality STW Resonators: Calculation Methods and Application in Self-Oscillators 高质量STW谐振器：计算方法及其在自振中的应用

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2025-09-09 DOI: 10.1134/S1063771024603200

A. S. Koigerov, V. R. Reut

{"title":"High-Quality STW Resonators: Calculation Methods and Application in Self-Oscillators","authors":"A. S. Koigerov, V. R. Reut","doi":"10.1134/S1063771024603200","DOIUrl":"10.1134/S1063771024603200","url":null,"abstract":"<p>The results of the development of high-quality resonators based on surface transverse waves (STW) are reported. It is shown that the use of contemporary computational packages (COMSOL Multiphysics), as well as the improvement and development of already known calculation methods (modified model of coupled modes), make it possible to efficiently and quickly perform the calculation of STW devices. The results of comparing the theoretical and experimental characteristics of the transmission coefficient of a two-port STW resonator are presented. It is demonstrated that, using optical lithography, it is possible to manufacture high-quality resonators at frequencies of 0.5–2.5 GHz. Typical values for the unloaded Q-factor of 500-MHz resonators are 27 000–29 000. The results of measurements for a two-port STW resonator included into a 500-MHz low-noise self-oscillator model are reported to demonstrate phase noise at a level of –148.7 and –183.5 dBn/Hz at an offset of 1 kHz and 1 MHz, respectively, from the carrier frequency and a jitter of 2.8 fs. The self-oscillators based on STW resonators with a low level of phase noise and a small jitter can be demanded in the areas where it is critically necessary to provide a maximum dynamic range of digital signal processing ducts.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"357 - 367"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063771024603200.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021605","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

On the Criteria for Selecting the Parameters of Sounding Signals for a Hydroacoustic System for Temperature Monitoring of Water Areas of the Sea of Japan 日本海海域温度监测水声系统测深信号参数选择准则

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2025-09-09 DOI: 10.1134/S1063771024601900

V. V. Bezotvetnykh, A. A. Golov, A. A. Tagiltsev, Yu. N. Morgunov

引用次数: 0

Active Control of Flow-Induced Cavity Noise Using a Plasma Actuator 利用等离子体作动器主动控制流致腔噪声

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2025-09-09 DOI: 10.1134/S1063771024602541

V. F. Kopiev, P. N. Kazanskii, V. A. Kopiev, I. A. Moralev, I. V. Pankratov

引用次数: 0

Energy and Momentum Change Laws for Two-Dimensional Elastic Systems with Moving Objects 二维运动物体弹性系统的能量和动量变化规律

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2025-09-09 DOI: 10.1134/S1063771024601973

V. I. Erofeev, E. E. Lisenkova

{"title":"Energy and Momentum Change Laws for Two-Dimensional Elastic Systems with Moving Objects","authors":"V. I. Erofeev, E. E. Lisenkova","doi":"10.1134/S1063771024601973","DOIUrl":"10.1134/S1063771024601973","url":null,"abstract":"<p>The article considers a self-consistent problem on the dynamic behavior of a deformable system consisting of a two-dimensional elastic guide (subsystem 1) and a one-dimensional elastic object moving continuously along it (subsystem 2). Local and global energy and wave momentum change laws are presented for the case when the Lagrangians of the contacting subsystems depend on generalized coordinates and their derivatives lower than the second order with respect to all the spatiotemporal variables. The conditions of radiation in the considered class of systems are discussed. A comparative analysis of both dispersion and energy characteristics of bending waves propagating in plates is carried out for two different models. The critical velocities of a constant load moving along these plates are found. The dependence of critical velocities on the rigidity coefficient of an elastic base and the physicomechanical properties of a plate is established. The principal possibility of converting the energy of two-dimensional elastic guide oscillations into the energy of the translational motion of a one-dimensional object is demonstrated. The wave pressure force expressed in a universal form through the two-dimensional system Lagrangian acts as a mediator of such conversion. The dependence of the coefficient of wave energy conversion into the energy of the translational motion of an absolutely rigid fastening on its motion velocity and two-dimensional system parameters is constructed.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"301 - 311"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021707","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

Stress Measurement of Orthogonal Fiber-Reinforced Composites under Biaxial Stress Conditions Based on Critically Refracted Longitudinal Wave Method 基于临界折射纵波法的正交纤维增强复合材料双轴应力测量

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2025-09-09 DOI: 10.1134/S1063771024602474

Li Yicen, Li Rongguang, Sun Ling, Chen Sixun, Cheng Zhiqiang

{"title":"Stress Measurement of Orthogonal Fiber-Reinforced Composites under Biaxial Stress Conditions Based on Critically Refracted Longitudinal Wave Method","authors":"Li Yicen, Li Rongguang, Sun Ling, Chen Sixun, Cheng Zhiqiang","doi":"10.1134/S1063771024602474","DOIUrl":"10.1134/S1063771024602474","url":null,"abstract":"<p>This study derives the relationship between ultrasonic velocity and stress in orthogonal fiber-reinforced composites under biaxial stress conditions. By calibrating the stress coefficients in two directions, the stress values in the composite plate can be obtained using two time-of-flight measurements. The calibration of stress coefficients requires determining the first critical incident angle. Thus, micromechanics methods were used to calculate the stiffness matrix of the composite material, which was then input into a finite element model to simulate the ultrasonic velocity in the orthogonal composite material. This process determined the incident angle capable of exciting the critical refracted longitudinal wave, namely the first critical incident angle. Rectangular specimens of orthogonal composites were manufactured from glass fiber-reinforced composite plates with bidirectional layup, and uniaxial tensile tests were conducted to verify the accuracy of the first critical incident angle and to calibrate the stress coefficients. It was found that the normal stress in the fiber direction results in a decrease in the ultrasonic velocity in both the fiber and perpendicular directions. To verify the accuracy of ultrasonic stress measurement, uniaxial tensile specimens with a central hexagonal area under biaxial stress conditions and standard biaxial tensile specimens were specially designed. The experimental results for both specimens showed that the ultrasonic stress measurement results were in good agreement with the stress measured using strain gauges, confirming the accuracy and practicality of the ultrasonic stress measurement method<i>.</i></p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"368 - 377"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021712","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

On the Possibility of Three-Dimensional Localization of Airframe Noise Sources Using Sequential Asynchronous Microphone Array Measurements 时序异步传声器阵列测量对机体噪声源进行三维定位的可能性研究

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2025-09-09 DOI: 10.1134/S1063771024601857

O. P. Bychkov, M. A. Demyanov

{"title":"On the Possibility of Three-Dimensional Localization of Airframe Noise Sources Using Sequential Asynchronous Microphone Array Measurements","authors":"O. P. Bychkov, M. A. Demyanov","doi":"10.1134/S1063771024601857","DOIUrl":"10.1134/S1063771024601857","url":null,"abstract":"<div><p>The article presents the results of using a previously developed method for three-dimensional localization of acoustic sources based on data from asynchronous measurements with a multimicrophone array from various positions, adapted for dipole-type sources characteristic of airframe noise. The article consists of two parts. In the first, the developed method was verified using the example of localization of test dipole sources. Sources with different orientations of the dipole moment with respect to the edges of the microphone array are considered. Based on the results of localizing test sources, it is shown that a dihedral array, the faces of which are parallel to the dipole moment of the source, allows more accurate identification of a dipole source in three-dimensional space compared to the general case. In the second part, the method is used to construct three-dimensional noise-source localization maps of a small-scale high-lift wing model with imitation of extended landing gear, which has a complex structure of dipole sources with various amplitudes and directions. The obtained volumetric localization maps in various frequency bands were analyzed by comparing such localization with test cases, and the possibility of localizing sources in this case was shown.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 3","pages":"422 - 433"},"PeriodicalIF":1.2,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145021727","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

Optimization of a H2 Blending Concentration Sensor in Natural Gas Utilizing a Four-Branch Closed Resonator 利用四支路闭合谐振器优化天然气中H2混合浓度传感器

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2025-09-09 DOI: 10.1134/S1063771025600032

Bingqing Luan, Changjin Shao, Feiyu Liu, Zhenqing Yang

引用次数: 0