Applied Acoustics最新文献

Reconstructing waves traveling in a discrete granular chain from experimental acoustic measurement 从实验声学测量中重建以离散颗粒链传播的波

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-10-03 DOI: 10.1016/j.apacoust.2025.111090

Zhansheng Ye

{"title":"Reconstructing waves traveling in a discrete granular chain from experimental acoustic measurement","authors":"Zhansheng Ye","doi":"10.1016/j.apacoust.2025.111090","DOIUrl":"10.1016/j.apacoust.2025.111090","url":null,"abstract":"<div><div>This paper presents a method for reconstructing elastic waves in a granular chain using a double-bead impulse response (IR) that bridges the contact force of two colliding beads and their radiated acoustic pressure, considering the experimental infeasibility of a single bead. An impulse response variation (IRV) is proposed to compensate for the variation in acoustic pressure caused by adjacent beads in the granular chain. The calculation processes for IR and IRV are detailed, and two-bead and three-bead experiments are designed to calculate them. Finally, the acceleration of a seven-bead chain is reconstructed using the proposed method and compared with analytical solution and laser measurements. The reconstruction using only IR exhibits poor agreement with laser measurements, but incorporating IRV significantly improves the accuracy. The results show that the reconstruction involving IRV fits better with laser measurements, proving the necessity of IRV for the dynamic reconstruction of granular chains. This study is the first to experimentally reconstruct the motion of a granular chain via acoustic signals, offering a novel approach for non-destructive measurement in granular media.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"242 ","pages":"Article 111090"},"PeriodicalIF":3.4,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221100","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

The interaction between noise, sex and monetary incentives on complex problem solving 噪音、性和金钱激励对复杂问题解决的相互作用

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-10-01 DOI: 10.1016/j.apacoust.2025.111061

Hang Zhou , Brett R.C. Molesworth , Marion Burgess , Julie Hatfield

引用次数: 0

Exploring the relationship between urban acoustic environments and mental well-being 探索城市声学环境与心理健康的关系

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-30 DOI: 10.1016/j.apacoust.2025.111092

Alexandra L. Montenegro , Gera Leal , Antonio Zumelzu , Marie Geraldine Herrmann-Lunecke , Gastón Vergara , Cristóbal Heskia , Mariana Estrada , Gaetano Licitra

{"title":"Exploring the relationship between urban acoustic environments and mental well-being","authors":"Alexandra L. Montenegro , Gera Leal , Antonio Zumelzu , Marie Geraldine Herrmann-Lunecke , Gastón Vergara , Cristóbal Heskia , Mariana Estrada , Gaetano Licitra","doi":"10.1016/j.apacoust.2025.111092","DOIUrl":"10.1016/j.apacoust.2025.111092","url":null,"abstract":"<div><div>Urban acoustic environments are generally perceived in terms of annoying or pleasant sounds. The study of environmental noise and soundscape has established some links with people’s physical and mental health, suggesting that it may indeed influence well-being. However, this broader concept has not been sufficiently explored in relation to the acoustic environment. Here a mixed methodology was designed and applied in a neighborhood in Valdivia, southern Chile, with the aim to explore the relationship between urban acoustic environments and mental well-being. Urban road traffic noise and annoyance were quantified through noise mapping and measurements. Perceived soundscape of visitors in the neighborhood was assessed through guided soundwalks under deep listening and surveys. Self-reported mental well-being was evaluated based on the perceptions of the residents in walking interviews. We found that biophony and geophony sounds induced positive states of mental well-being, and urban places with highest prevalence of such sounds were mostly assessed as vibrant, with positive levels of pleasantness and eventfulness. Nevertheless, the most common source of urban noise was road traffic noise, which had a negative impact on mental well-being by evoking emotions of annoyance and discomfort. Despite this, in places where the soundscape was conducive to a mental well-being, road traffic noise was informationally masked. Investigating the acoustic environment though its noise and soundscape permitted to better understand and relate the self-reported emotions found in the well-being interviews. Likewise, collecting perceptions of visitors and residents independently provided coherent results, suggesting an equivalent perception of the soundscape by both groups.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"242 ","pages":"Article 111092"},"PeriodicalIF":3.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221108","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

Significance of statistical testing and data integration in acoustic emission analysis 统计检验与数据整合在声发射分析中的意义

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-30 DOI: 10.1016/j.apacoust.2025.111099

Vimalathithan Paramsamy Kannan, Claudia Barile

{"title":"Significance of statistical testing and data integration in acoustic emission analysis","authors":"Vimalathithan Paramsamy Kannan, Claudia Barile","doi":"10.1016/j.apacoust.2025.111099","DOIUrl":"10.1016/j.apacoust.2025.111099","url":null,"abstract":"<div><div>In the applications of structural health monitoring, Acoustic Emission (AE) data can be considered Big Data simply due to the large number of signals acquired or the stochastic relationship between their different variables. However, statistical tests or significance tests are not used in the AE data analysis, neither in the AE signal processing nor in parameter analysis. This study addresses the importance of the significance tests in the AE data analysis (both signal-based and parameter-based approaches). Artificial stress waves are simulated on a stainless steel 304 plate using the Hsu-Nielsen source and Low-Velocity Impact (LVI) events to generate data to enrich the dataset. Statistical tests such as <span><math><msup><mi>χ</mi><mn>2</mn></msup></math></span> and Kruskal-Wallis (KW) tests are used to analyse the signal-based and parameter-based AE data. Statistical analysis minimised the effect of the noise floor in the time-frequency analysis of the AE signals and reduced the sensor effects in the extracted AE descriptors. In addition, the significance tests also revealed the most appropriate method for integrating the AE data acquired from different sensors.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"242 ","pages":"Article 111099"},"PeriodicalIF":3.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221099","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

Intrinsic polarization and high-frequency broadband asymmetric transmission of flexural wave in beams 梁内弯曲波的本征极化与高频宽带不对称传输

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-30 DOI: 10.1016/j.apacoust.2025.111106

Yuxuan Zhang , Jinfeng Zhao , Weitao Yuan , Pengfei Li , Fan Yang , Yongdong Pan

引用次数: 0

A hybrid strategy of OTPA and machine learning for efficient root-cause analysis of NVH in multi-source systems 基于OTPA和机器学习的多源系统NVH有效根源分析混合策略

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-30 DOI: 10.1016/j.apacoust.2025.111060

Sharif Khakshournia , Shaygan Shahed Haghighi , Marzie Majidi , Farhad Najafnia , Hamed Haddad Khodaparast

{"title":"A hybrid strategy of OTPA and machine learning for efficient root-cause analysis of NVH in multi-source systems","authors":"Sharif Khakshournia , Shaygan Shahed Haghighi , Marzie Majidi , Farhad Najafnia , Hamed Haddad Khodaparast","doi":"10.1016/j.apacoust.2025.111060","DOIUrl":"10.1016/j.apacoust.2025.111060","url":null,"abstract":"<div><div>The growing awareness of health benefits, along with the competitive emphasis on vehicle comfort, has led automakers to place greater attention on reducing Noise, Vibration, and Harshness (NVH). One of the most beneficial techniques for NVH engineers to identify, rank, and eliminate dominant noise and vibration sources and paths is Transfer Path Analysis (TPA). Unlike traditional TPA, Operational Transfer Path Analysis (OTPA) requires neither the preliminary acquisition of the transfer matrix between excitation and response points nor the measurement of forces transferred through the active and passive side connection points. Although the OTPA method offers significant advantages over classical TPA methods, it still faces challenges such as data loss caused by the pseudo-inversion of the indicator matrix. In this paper, we estimate the transmissibility matrix using a machine learning-based regression algorithm (random forest). We demonstrated that machine learning is an effective alternative to the truncated Singular Value Decomposition (SVD) method for estimating the transmissibility matrix, as it is a swift solution that preserves essential information in the indicator matrix. The efficiency of the method has been verified by a 2.28 % improvement in the Sound Pressure Level (SPL) of the driver’s ear noise of a sedan-type vehicle through the modification of the most critical path found by this approach.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"242 ","pages":"Article 111060"},"PeriodicalIF":3.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221107","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

Optical fiber ring horn Fabry-Perot ultra-thin film acoustic sensor by two-photon polymerization 3D printing 光纤环角法布里-珀罗超薄膜声传感器采用双光子聚合3D打印

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-29 DOI: 10.1016/j.apacoust.2025.111102

Mao-qing Chen , Chi Zhang , Zheng Zhou , Shou-zheng Qiao , Si-yuan Liu , Kun-yang He , Qiao-yun Wang , Yong Zhao

{"title":"Optical fiber ring horn Fabry-Perot ultra-thin film acoustic sensor by two-photon polymerization 3D printing","authors":"Mao-qing Chen , Chi Zhang , Zheng Zhou , Shou-zheng Qiao , Si-yuan Liu , Kun-yang He , Qiao-yun Wang , Yong Zhao","doi":"10.1016/j.apacoust.2025.111102","DOIUrl":"10.1016/j.apacoust.2025.111102","url":null,"abstract":"<div><div>This paper presents a miniaturized fiber-optic FP acoustic sensor with an integrated annular horn structure. The proposed sensor features a 2-μm-thick diaphragm and an 80-μm-long FP cavity, which was directly fabricated on the fiber end face via two-photon polymerization technology. Wavelength demodulation method and intensity demodulation method are used to detect the audible sound waves of the sensor in low, medium and high frequency bands, and the sound pressure response ability is tested. The sensor shows good linearity in low, medium and high frequency bands. The sound pressure sensitivity is 0.271 V/Pa@200 Hz for acoustic pressures between 75 dB and 95 dB. At 85 dB SPL and 200 Hz frequency, this sensor demonstrates a minimum detectable pressure (MDP) of 0.652 mPa/Hz<sup>1/2</sup>, outperforming conventional fiber-optic detectors. Under the condition of a sound pressure of 0.63 Pa at 200 Hz, the sensor exhibited a time-domain response peak of 0.47 mV, which is 1.47 times higher than the mid-frequency signal (0.19 mV at 2500 Hz) and 4.88 times greater than the high-frequency signal (0.08 mV at 14 kHz), indicating the most pronounced time-domain response at 200 Hz. Both wavelength demodulation and intensity demodulation methods confirmed that the sensor achieves optimal frequency response performance at 200 Hz, with a normalized peak frequency response value of 0.55. In the sound pressure response experiment, when the sound pressure was 0.36 Pa, the sensor achieved the highest signal-to-noise ratio and the minimum detectable sound pressure, demonstrating its superior performance in detecting weak acoustic signals. Owing to its superior frequency response characteristics and exceptional acoustic detection sensitivity, the proposed sensor demonstrates significant potential for applications in marine biological monitoring and industrial non-destructive testing.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"242 ","pages":"Article 111102"},"PeriodicalIF":3.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221103","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

Generation of an enhanced acoustical quasi-Bessel beams with a grating Bessel interdigital transducer 用光栅贝塞尔数字间换能器产生增强声学准贝塞尔光束

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-29 DOI: 10.1016/j.apacoust.2025.111089

Kaining Wen , Jiaojiao Liu , Tengfei Zheng , Yupei Qiao , Guangbin Zhang , Xiaofeng Zhang

{"title":"Generation of an enhanced acoustical quasi-Bessel beams with a grating Bessel interdigital transducer","authors":"Kaining Wen , Jiaojiao Liu , Tengfei Zheng , Yupei Qiao , Guangbin Zhang , Xiaofeng Zhang","doi":"10.1016/j.apacoust.2025.111089","DOIUrl":"10.1016/j.apacoust.2025.111089","url":null,"abstract":"<div><div>The manipulation of micrometer-scale particles using surface acoustic waves has been demonstrated to have broad application potential across a range of disciplines, including materials science, precision engineering, the biomedical fields and chemical analysis. The device offers a number of advantages, including non-contact operation, good biocompatibility, the elimination of the need for chemical biomarkers, and straightforward integration. However, due to the structure of interdigital transducers, the performance in complex microfluidic environments remains constrained by limitations in energy efficiency and field uniformity. In this paper, a grating-Bessel interdigital transducer (GBIDT) is presented to produce modulating quasi-Bessel beam, which can enhance acoustic energy distribution in the manipulation region. Numerical simulations and experimental validation have been conducted to verify the preservation of the non-diffracting and self-healing properties of quasi-Bessel beams within the manipulation region by the proposed GBIDT. The results show that the integrated grating structure can enhance the main lobe intensity while suppressing side lobes (59.38% improvement in main-to-side lobe ratio), enabling a 29.41% acceleration in particle transport velocity under equivalent energy input. Then, the GBIDT is used in crystallization experiment and the results show that the device can produce pyramid-shaped NaCl crystals with controlled morphology, which distincts from naturally formed cubic crystals. This work demonstrates a practical approach to enhancing SAW-based manipulation systems, with potential applications in microfluidics, bioseparation, and programmable crystal engineering.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"242 ","pages":"Article 111089"},"PeriodicalIF":3.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221101","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

Square concentrator with intelligent circuit control of elastic wave metamaterial plate 弹性波超材料板智能电路控制方形聚光器

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-29 DOI: 10.1016/j.apacoust.2025.111098

Li Ning , P.H. Wen , Hui Zheng , C.W. Lim

{"title":"Square concentrator with intelligent circuit control of elastic wave metamaterial plate","authors":"Li Ning , P.H. Wen , Hui Zheng , C.W. Lim","doi":"10.1016/j.apacoust.2025.111098","DOIUrl":"10.1016/j.apacoust.2025.111098","url":null,"abstract":"<div><div>In this work, we propose and fabricate a novel square intelligent concentrator that is able to focus elastic waves in a thin plate, with the potential to efficiently collect wave energy. Approximate anisotropic parameters of the plate configuration are derived through the space transformation method. An intelligent circuit control system is integrated into the device to enhance the functionality of the concentrator, and it allows for real-time detection of incident waves as well as flexible adjustment of material parameters. Simulation and experiment result demonstrates that the configuration shows a tendency of energy concentration, but the performance is not obvious in the frequency range from 800 Hz to 1200 Hz. However, the effective frequency region of the concentrator is from 1200 Hz to 1700 Hz, and the energy concentration performance can be greatly improved by integrating the intelligent control system. This work emphasizes the potential of the proposed square intelligent concentrator in harnessing and manipulating elastic waves for various applications. The ability to dynamically adjust the material parameters, coupled with efficient wave collection, makes this device a promising candidate for wave energy harvesting and other related fields.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"242 ","pages":"Article 111098"},"PeriodicalIF":3.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221102","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

Ring-excited unimorph ultrasonic transducer with double acoustic black hole structure for enhanced vibration radiation 双声黑洞结构环激均匀超声换能器增强振动辐射

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-09-29 DOI: 10.1016/j.apacoust.2025.111100

Hao Jiang, Wenbo Ren, Wenxu Ye, Shuyu Lin

{"title":"Ring-excited unimorph ultrasonic transducer with double acoustic black hole structure for enhanced vibration radiation","authors":"Hao Jiang, Wenbo Ren, Wenxu Ye, Shuyu Lin","doi":"10.1016/j.apacoust.2025.111100","DOIUrl":"10.1016/j.apacoust.2025.111100","url":null,"abstract":"<div><div>Unimorph ultrasonic transducers have been widely utilized in various ultrasonic applications, owing to their numerous advantages such as a broad operational frequency range, low driving voltage requirements, high electro-mechanical conversion efficiency, compact size, adaptable application conditions, and rapid high-frequency response. As ultrasonic technology continues to advance rapidly, enhancing the acoustic matching and radiation performance of ultrasonic radiators has become increasingly important. To address this need, this study proposes a novel ring-excited unimorph ultrasonic transducer (RUUT) incorporating a double acoustic black hole (DABH) profile to cooperatively improve acoustic radiation efficiency. The inner and outer ABH effects effectively reduce the velocity of flexural waves, modulate and amplify displacement amplitudes on the radiation surface, and enhance the acoustic impedance matching between the transducer and the surrounding air medium. To facilitate the rapid optimization of the transducer design, a theoretical analytical method was developed to accurately calculate the resonant frequency of a disk with an arbitrary surface profile. Experimental results demonstrate that under identical working frequencies, radiation areas, and vibration modes, the DABH-RUUT achieves a maximum vibration displacement twice that of conventional flat-RUUT (F-RUUT). Additionally, it exhibits lower equivalent electrical impedance; higher electro-acoustic efficiency; improved acoustic intensity transmission coefficient; superior air matching performance; and enhanced radiation capability resulting in stronger acoustic pressure. These findings confirm that the DABH design significantly improves air coupling and radiation efficiency of RUUT. This research offers a promising new direction for optimizing the performance of such transducers.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"242 ","pages":"Article 111100"},"PeriodicalIF":3.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221104","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