Applied Acoustics最新文献_第7页

Magneto-acousto-electrical tomography utilizing line-shaped acoustic beams 利用线状声束的磁声电层析成像

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-03 DOI: 10.1016/j.apacoust.2025.111051

Zhen-tian Liu , Pei-xia Li , Wei Chen , Hao Qian , Ge-pu Guo , Qing-yu Ma

{"title":"Magneto-acousto-electrical tomography utilizing line-shaped acoustic beams","authors":"Zhen-tian Liu , Pei-xia Li , Wei Chen , Hao Qian , Ge-pu Guo , Qing-yu Ma","doi":"10.1016/j.apacoust.2025.111051","DOIUrl":"10.1016/j.apacoust.2025.111051","url":null,"abstract":"<div><div>Magneto-acousto-electrical tomography (MAET) that couples magnetic, acoustic, and electronic fields, enables the detection of electrical conductivity changes for biological tissues, and holds advantages of high spatial resolution and contrast. However, the traditional B-mode imaging is significantly distorted due to the wide radiation pattern of planar transducers, necessitating extensive rotation in practical applications. To address this limitation, a MAET technique utilizing line-shaped acoustic beams is developed to improve image quality for objects with arbitrary shapes using minimal rotations. The principle of MAE measurements is derived based on distributions of acoustic pressure of ideal line-shaped Bessel beams and electrical conductivity of objects. It is demonstrated that MAE signals generated by inclined conductivity boundaries can be enhanced by a narrower line-shaped beam with a larger wavenumber <em>k<sub>r</sub></em>, resulting in improved B-mode images with more accurate information of conductivity boundaries. The relative error is introduced to assess the agreement between the B-mode image and the conductivity boundary of a cylindrical phantom model. The results show that the maximum coincidence angle of B-mode imaging increases as <em>k<sub>r</sub></em> increases, and leads to reduced rotations for MAET, with the minimum of just 4 for an infinite <em>k<sub>r</sub></em>. Theoretical predictions and numerical simulations are validated by experimental B-mode imaging of a prismatic object with an inclined boundary, using a line-focused beam with <em>k<sub>r</sub></em> = 516 m<sup>−1</sup> generated by an anti-axicon phase modulation lens. The improved performance of MAET is also demonstrated by 24 rotations, which has a nearly continuous and uniform boundary for the phantom model. The line-shaped beam is proved to be an effective source to improve the speed and quality of MAET, exhibiting promising potentials in biomedical applications.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"241 ","pages":"Article 111051"},"PeriodicalIF":3.4,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Research on analysis and suppression of frameless door seal squeak noise based on stick-slip displacement 基于粘滑位移的无框门密封噪声分析与抑制研究

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-03 DOI: 10.1016/j.apacoust.2025.111041

Zhong Yang , Luoxing Li , Ruyi Chen , Shuiping Liao , Huaquan Liu , Jichao Zhang

{"title":"Research on analysis and suppression of frameless door seal squeak noise based on stick-slip displacement","authors":"Zhong Yang , Luoxing Li , Ruyi Chen , Shuiping Liao , Huaquan Liu , Jichao Zhang","doi":"10.1016/j.apacoust.2025.111041","DOIUrl":"10.1016/j.apacoust.2025.111041","url":null,"abstract":"<div><div>To address the issue of seal squeak noise in a frameless door vehicle on rough roads, this study establishes a mathematical model of sealing strip motion and analyzes the mechanism of noise generation. The analysis reveals that the dynamic displacement difference between the frameless door and the body frame induces stick–slip effects at the seal contact interface, and the resulting self-excited vibration is the root cause of the noise. Based on the kinematic characteristics of stick–slip motion, an innovative noise control strategy is proposed: by optimizing the geometric nonlinearity of the seal cross-section configuration and modifying the tribological properties of the surface coating material, the stick–slip triggering displacement is increased beyond the operational threshold, effectively suppressing vibration energy accumulation and reducing noise caused by frictional expansion and contraction of the sealing material. Bench test results demonstrate that the improved solution significantly mitigates self-excited vibration noise, providing both theoretical insights and practical engineering solutions for addressing NVH (Noise, Vibration, and Harshness) issues in frameless doors.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"241 ","pages":"Article 111041"},"PeriodicalIF":3.4,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Rigorous coupled-wave analysis for the design of ultrasound metasurfaces with soft boundaries 软边界超声超表面设计的严格耦合波分析

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-03 DOI: 10.1016/j.apacoust.2025.111038

Shulong Hong , Xinya Yao , Xiangkun Piao , Yuhang Fan , Cheng Lü , Jiabao Yao , Suhua Luo , Yanbo Pei , Yongyuan Jiang , Bingbing Cheng , Fengfeng Yao

{"title":"Rigorous coupled-wave analysis for the design of ultrasound metasurfaces with soft boundaries","authors":"Shulong Hong , Xinya Yao , Xiangkun Piao , Yuhang Fan , Cheng Lü , Jiabao Yao , Suhua Luo , Yanbo Pei , Yongyuan Jiang , Bingbing Cheng , Fengfeng Yao","doi":"10.1016/j.apacoust.2025.111038","DOIUrl":"10.1016/j.apacoust.2025.111038","url":null,"abstract":"<div><div>Acoustic metasurfaces enable precise wavefront manipulation, yet face significant computational and design challenges in predicting and optimizing their behavior. By utilizing efficient computational methods based on rigorous coupled wave analysis (RCWA), we design and optimize multifocal metasurfaces. Multifocal metasurfaces hold significant potential for medical ultrasound applications. Using a trifocal metasurface as a demonstrative example, we showcase the capabilities of our innovative algorithm in the design and optimization of multifocal metasurfaces. Our methodology integrates RCWA with angular spectrum analysis and genetic algorithms to achieve simultaneous amplitude and phase modulation, enabling arbitrary energy distribution among multiple focal points. Through comprehensive numerical simulations and experimental validation, we demonstrate the feasibility of our design in achieving three-dimensional acoustic intensity control. This work provides a novel solution for advanced medical ultrasound applications, offering substantial improvements in computational efficiency and design flexibility compared to conventional methods.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"241 ","pages":"Article 111038"},"PeriodicalIF":3.4,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 multi-line source sound field model, for high-efficiency phased array ultrasonic detection of damage on the inner surface of curved artillery shell casing 建立了一种多线源声场模型，用于高效相控阵超声检测弯曲炮弹壳内表面损伤

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-01 DOI: 10.1016/j.apacoust.2025.111049

Jiajian Meng , Qiang Han , Enpei Zhao , Xianke Li , Haomiao Fang , Junrong Li , Xinyu Zhao , Jianhai Zhang , Hongwei Zhao

{"title":"A multi-line source sound field model, for high-efficiency phased array ultrasonic detection of damage on the inner surface of curved artillery shell casing","authors":"Jiajian Meng , Qiang Han , Enpei Zhao , Xianke Li , Haomiao Fang , Junrong Li , Xinyu Zhao , Jianhai Zhang , Hongwei Zhao","doi":"10.1016/j.apacoust.2025.111049","DOIUrl":"10.1016/j.apacoust.2025.111049","url":null,"abstract":"<div><div>It is significant to study the focused sound field distribution of curved transducers to guide its optimized design and fabrication. Aiming at the problems of the complex beam model and low computational efficiency of the linear curved phased array transducer, this paper optimizes the Non-paraxial approximation multi-gaussian beam model (NMG) and proposes a two-dimensional Multi-linear source field model (MLS). The high-frequency analytical expression of the Rayleigh integral is derived using the Hankel equation, yielding semi-analytical solutions. Taking the simulation results of the high-frequency focused sound field by the Finite element method (FEM) as the reference standard: the NMG model demonstrated axial and off-axis errors below 8.57 % and 6.93 % respectively, while requiring only 9.15 % of the computational time compared to FEM models. The developed MLS model exhibited superior performance with maximum errors of 3.44 % (axial) and 1.87 % (off-axis), achieving a minimum computation time reduction to 1.06 % of FEM models while maintaining higher computational efficiency than NMG models under refined resolution conditions. Parametric analysis revealed the influence of transducer radius, element width, and center frequency on focusing performance, demonstrating the capability of the MLS beam model in transducer parameter configuration and optimization design. Guided by beam field simulations for optimal transmitter aperture configuration, the ultrasonic B-scan technology is used to solve the problem of accurate imaging detection of various damages on the inner side surface of the artillery shell casing. This research establishes a reliable technical framework for rapid experimental configuration and high-precision imaging applications of linear curved phased array transducers.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"241 ","pages":"Article 111049"},"PeriodicalIF":3.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Topological acoustic fixture 拓扑声夹具

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-08-30 DOI: 10.1016/j.apacoust.2025.111032

Chengzhi Ma , Jiu Hui Wu , Xingzhong Wang

{"title":"Topological acoustic fixture","authors":"Chengzhi Ma , Jiu Hui Wu , Xingzhong Wang","doi":"10.1016/j.apacoust.2025.111032","DOIUrl":"10.1016/j.apacoust.2025.111032","url":null,"abstract":"<div><div>In this paper, the topological acoustic fixture is proposed to realize a new mechanical wave control method. It is composed of periodic clamping tooth, and through different forms of fixture, a combination of vibration modes with different topological states can be formed in the non-destructive metal sheet to support the lossless mechanical wave transmission with high fault tolerant in arbitrary directional path. On the one hand, the mechanical wave can achieve directional transmission without energy loss without destroying the metal sheet, there is no material loss, and the device can be reused many times. On the other hand, the selective frequency band transmission of mechanical waves can be realized. In addition, the transmission will not be interfered by the defects in transmission medium and topological acoustic fixture, and the transmission still has strong stability and high transmission accuracy; More importantly, the flexible high-performance transmission control can be realized under the clamping of the flexible topological acoustic fixture, which saves a lot of manpower, material resources and financial resources. Finally, the experiment is carried out to verify. This research will pave the way for the engineering application of multi-functional and micro-miniature devices such as covert communication, energy capture, highly fault-tolerant devices, reuse technology. Further promote the development of the petroleum, power and vibration-related industries.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"241 ","pages":"Article 111032"},"PeriodicalIF":3.4,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Semi-blind source separation for unmanned aerial vehicle audition 无人机音频半盲源分离

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-08-29 DOI: 10.1016/j.apacoust.2025.111019

Jin Xuan Teh , Norihiro Takamune , Hiroshi Saruwatari , Benjamin Yen , Michael Kingan , Yusuke Hioka

{"title":"Semi-blind source separation for unmanned aerial vehicle audition","authors":"Jin Xuan Teh , Norihiro Takamune , Hiroshi Saruwatari , Benjamin Yen , Michael Kingan , Yusuke Hioka","doi":"10.1016/j.apacoust.2025.111019","DOIUrl":"10.1016/j.apacoust.2025.111019","url":null,"abstract":"<div><div>This paper presents a semi-blind source separation (BSS) method tailored for sound source enhancement for audio recording systems mounted on unmanned aerial vehicles (UAVs). This method capitalises on recordings of UAV ego-noise to supervise the independent low-rank matrix analysis (ILRMA) algorithm. Through the integration of spatial and noise source supervisors, ILRMA is transformed from a blind to a semi-blind method, substantially enhancing sound source separation performance in UAV settings. The spatial supervisor effectively addresses the global permutation problem in BSS within input signal-to-noise ratios (SNRs) ranges of 0 to -30 dB. Concurrently, the noise source supervisor leverages the UAV's dominant ego-noise to predetermine the BSS solution for noise components, leading to improved performance. Comprehensive tests using generated and recorded target signals demonstrate significant performance improvements, including an 18 dB increase in source-to-distortion ratio, a 20 dB increase in signal-to-noise ratio, a 0.22 score improvement in short-time objective intelligibility, and a 0.5 dB improvement in cepstral distance.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"241 ","pages":"Article 111019"},"PeriodicalIF":3.4,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 analysis of jet noise and thrust in nozzles with zigzag-shaped vortex generators 锯齿形涡发生器喷嘴内射流噪声与推力的实验分析

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-08-29 DOI: 10.1016/j.apacoust.2025.111036

Felipe A.F. Câmara , Victor H.P. Rosa , Cesar J. Deschamps , Filipe D. da Silva

{"title":"Experimental analysis of jet noise and thrust in nozzles with zigzag-shaped vortex generators","authors":"Felipe A.F. Câmara , Victor H.P. Rosa , Cesar J. Deschamps , Filipe D. da Silva","doi":"10.1016/j.apacoust.2025.111036","DOIUrl":"10.1016/j.apacoust.2025.111036","url":null,"abstract":"<div><div>This paper reports an experimental analysis of a vortex generator adopted to reduce the noise emitted by subsonic jets of aero-engines. This noise reduction device consists of a tape adhered to the inner surface of the nozzle near its exit, covering the entire nozzle circumference and featuring a zigzag pattern, with a thickness approximately 1% of the nozzle diameter. Acoustic and hot-wire measurements were conducted in an anechoic chamber to quantify the thrust reduction due to the vortex generator and correlate the observed noise reduction with changes in flow turbulence. The device increases the turbulence intensity in the shear layer near the nozzle exit whilst reducing it further downstream. These changes in the flow turbulence reduce the noise emission at low to mid frequencies but increases at higher frequencies. The results for a jet at an acoustic Mach number of 0.5 showed that noise reduction achieved with the vortex generator is sustained, even when the nozzle exit velocity is increased to compensate for a minor decrease in thrust. This finding is significant, as previous studies involving vortex generators did not assess the thrust penalty.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"241 ","pages":"Article 111036"},"PeriodicalIF":3.4,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

An experimental Investigation into the sound scattering properties of two-dimensional quadratic residue diffusers 二维二次型残余扩散器声散射特性的实验研究

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-08-29 DOI: 10.1016/j.apacoust.2025.111030

Lili Pan, Jianliang Gao, Yuezhe Zhao

{"title":"An experimental Investigation into the sound scattering properties of two-dimensional quadratic residue diffusers","authors":"Lili Pan, Jianliang Gao, Yuezhe Zhao","doi":"10.1016/j.apacoust.2025.111030","DOIUrl":"10.1016/j.apacoust.2025.111030","url":null,"abstract":"<div><div>Schroeder diffusers have been widely used in rooms and outdoor environments due to their simple constructions and excellent sound diffusing characteristics. In theory, a two-dimensional (2D) Schroeder diffuser can scatter sound in multiple planes, providing more grating lobes than a one-dimensional (1D) diffuser. In previous research, the scattering properties of 1D Schroeder diffusers have been systematically studied, but research focusing on the scattering coefficients of 2D Schroeder diffuser remains limited, and available experimental data are still rare. In this study, ten types of two-dimensional quadratic residue diffusers (2D-QRDs) and four types of slot- and cavity-grid diffusing surfaces are designed and measured in a 1:10 scaled-down reverberation room on their scattering coefficients. The results are compared to analyze the effects of the cavity depth, the cavity shape, the sequence array, the baffle feature and the ratio of the maximum cavity depth (<em>d</em><sub>max</sub>) to the wave length (<em>λ</em>). Moreover, hemispherical surfaces and other Schroeder diffusers reported in other research are also taken into comparison. The data measured in this study provide engineers and acousticians with useful reference in room acoustic design. The scattering coefficient variation laws obtained in this study can provide a guide for the structural design of 2D-QRDs.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"241 ","pages":"Article 111030"},"PeriodicalIF":3.4,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effects of axial distance on the noise characteristics of contra-rotating coaxial rotors with identical/different rotor diameters 轴向距离对相同/不同转子直径对转同轴转子噪声特性的影响

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-08-29 DOI: 10.1016/j.apacoust.2025.111027

Boyang Jia, Gaohua Li, Zifei Yin, Xiaoqing Qiang, Weipeng Li

{"title":"Effects of axial distance on the noise characteristics of contra-rotating coaxial rotors with identical/different rotor diameters","authors":"Boyang Jia, Gaohua Li, Zifei Yin, Xiaoqing Qiang, Weipeng Li","doi":"10.1016/j.apacoust.2025.111027","DOIUrl":"10.1016/j.apacoust.2025.111027","url":null,"abstract":"<div><div>The axial distance between the upstream and downstream rotors is a critical installation parameter, affecting the aerodynamic and aeroacoustic performances of contra-rotating coaxial rotors. In this study, we investigate the effects of axial distance on the noise characteristics of contra-rotating coaxial rotors with identical and different diameters, by using 20″ and 16″ diameter rotors and adjusting the axial distance to the rotor diameter (<span><math><mi>z</mi><mo>/</mo><mi>D</mi></math></span>) within a large range of <span><math><mn>0.1</mn><mo>−</mo><mn>0.6</mn></math></span>. Results show that the configurations with identical rotor diameter exhibit the best aerodynamic efficiency and lowest noise level at <span><math><mi>z</mi><mo>/</mo><mi>D</mi><mo>≈</mo></math></span> 0.3-0.4. Installation of a smaller rotor in the upstream results in a significant reduction of the overall sound pressure levels. Details on the noise directivity, features of the tonal and broadband noise, and noise generation mechanisms are discussed with separations of acoustic spectra at different axial distances.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"241 ","pages":"Article 111027"},"PeriodicalIF":3.4,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Prediction of coast-by tyre/road noise based on equivalent monopoles synthesised from indoor tests 基于室内试验合成的等效单极子的沿海轮胎/道路噪声预测

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-08-28 DOI: 10.1016/j.apacoust.2025.111033

Samanta Dallasta , Luca Rapino , Francesco Ripamonti , Simone Baro , Roberto Corradi

{"title":"Prediction of coast-by tyre/road noise based on equivalent monopoles synthesised from indoor tests","authors":"Samanta Dallasta , Luca Rapino , Francesco Ripamonti , Simone Baro , Roberto Corradi","doi":"10.1016/j.apacoust.2025.111033","DOIUrl":"10.1016/j.apacoust.2025.111033","url":null,"abstract":"<div><div>Tyre/road interaction is the main source of environmental noise pollution, particularly in urban and suburban areas, even at moderate speeds. Its impact is further emphasised by the growing presence of electric vehicles, which significantly reduce the engine’s contribution to overall vehicle noise. Indoor testing of tyres is a common practice in the tyre industry during product design stages, as it provides an initial understanding of noise performance. However, outdoor tests are required to assess the noise performance of tyres. For this reason, this study presents a methodology for the prediction of coast-by tyre/road noise based on equivalent sources identified from indoor tests, including the effect of sound reflections due to the vehicle’s presence in an outdoor environment. The equivalent monopoles are identified from standalone tyre rolling noise measurements on a test rig equipped with a road replica in a semi-anechoic chamber. To conduct outdoor simulations, acoustic transfer functions are measured on the test track through an omnidirectional acoustic source, with the vehicle positioned on the track. This paper details the experimental setup, data processing, and methodology for carrying out coast-by tyre/road noise simulations based on these equivalent monopoles while accounting for vehicle motion, followed by a comparison with experimental measurements performed using an electric vehicle.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"241 ","pages":"Article 111033"},"PeriodicalIF":3.4,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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