Applied Acoustics最新文献

Tool wear detection using novel acoustic emission features and a two-stage Mann-Whitney U test 使用新型声发射特征和两阶段Mann-Whitney U测试进行工具磨损检测

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-25 DOI: 10.1016/j.apacoust.2025.110952

Duc-Thuan Nguyen , Jong-Myon Kim

{"title":"Tool wear detection using novel acoustic emission features and a two-stage Mann-Whitney U test","authors":"Duc-Thuan Nguyen , Jong-Myon Kim","doi":"10.1016/j.apacoust.2025.110952","DOIUrl":"10.1016/j.apacoust.2025.110952","url":null,"abstract":"<div><div>Accurate detection of tool wear is a critical challenge in manufacturing due to the complex and nonlinear nature of acoustic emission (AE) signals generated during machining. Conventional methods, including machine learning and deep learning, often fail to detect the subtle changes associated with early tool wear and suffer from a lack of explainability in their decision-making processes. This paper introduces three novel AE features: rank-based entropy, fractal geometry indicator, and chaos quantifier. These features are specifically designed to capture the intricate dynamics of AE signals that traditional methods overlook. To validate the discriminative power of these features, a two-stage Mann-Whitney <em>U</em> test is employed, combining the new features with other advanced AE features to differentiate between worn and unworn tools. Experimental results from milling and drilling machine tests show that the proposed approach significantly improves detection sensitivity, accuracy, and interpretability compared to existing methods, providing a more robust framework for tool wear detection. The source code for this paper is available at: <span><span>https://github.com/thuan-researcher/novel-ae-features-two-stage-mu</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110952"},"PeriodicalIF":3.4,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702419","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

Discrete Hartley transform - orthogonal frequency division multiplexing underwater acoustic communication system based on complex-to-real conversion 离散哈特利变换-基于复实转换的正交频分复用水声通信系统

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-24 DOI: 10.1016/j.apacoust.2025.110944

Jinqiu Wu , Wenbo Zhang , Rouchi Chen , Xiaofei Qi , Gang Qiao , Zhiwei Zhao , Haijun Tan

{"title":"Discrete Hartley transform - orthogonal frequency division multiplexing underwater acoustic communication system based on complex-to-real conversion","authors":"Jinqiu Wu , Wenbo Zhang , Rouchi Chen , Xiaofei Qi , Gang Qiao , Zhiwei Zhao , Haijun Tan","doi":"10.1016/j.apacoust.2025.110944","DOIUrl":"10.1016/j.apacoust.2025.110944","url":null,"abstract":"<div><div>In this paper, we propose a Complex-to-Real Transformation (C2RT) for Discrete Hartley Transform Orthogonal Frequency Division Multiplexing (DHT-OFDM) in underwater acoustic communication system. C2RT is an efficient system modulation scheme based on the principle of index modulation. Traditional DHT-OFDM systems only support modulation and demodulation in the real domain, which limits the use of high-order phase modulation. This restriction makes it difficult to improve communication rates and bandwidth utilization. C2RT is an effective solution to this problem. By incorporating this algorithm into DHT-OFDM system, high-order phase modulation can be achieved while maintaining the system's real-valued characteristics. Additionally, due to the sparsity of its output sequence, C2RT provides higher transmission accuracy compared to direct transmission schemes.</div><div>The experimental verifies that the DHT-OFDM system proposed in this paper can be applied to 300 m and 5 km underwater acoustic transmission with less error bits. This makes the proposed C2RT DHT-OFDM method a promising approach for enhancing underwater communication technologies.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110944"},"PeriodicalIF":3.4,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144696710","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

Modular low-frequency broadband acoustic absorption structure based on deep ring slits 基于深环形狭缝的模块化低频宽带吸声结构

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-24 DOI: 10.1016/j.apacoust.2025.110966

Liang Shi , Tiejun Song , Xiao Liang , Zhongyuan Tang , Yu Ye , Hanya Zhu

{"title":"Modular low-frequency broadband acoustic absorption structure based on deep ring slits","authors":"Liang Shi , Tiejun Song , Xiao Liang , Zhongyuan Tang , Yu Ye , Hanya Zhu","doi":"10.1016/j.apacoust.2025.110966","DOIUrl":"10.1016/j.apacoust.2025.110966","url":null,"abstract":"<div><div>For resonant cavity-type low-frequency broadband acoustic absorbing metamaterials, the broadband acoustic absorption performance relies on the coupling of multiple acoustic absorption peaks. The restriction of small pore size results in a decrease in the bandwidth of individual absorption peaks as the number of coupling units increases and the surface area of the structure expands. Notably, this phenomenon manifests more prominently at lower frequencies. Meanwhile, the realization of broadband sound absorption relies on the precise tuning of small hole parameters. In this study, we propose a modular structure of depth annular slits based on the micro-slit structure. The structure is designed with a series of depth annular micro slits with different inner diameters, which greatly improves the capture efficiency of low-frequency sound waves. Achieving a superior low-frequency broadband acoustic absorption effect with a limited number of units. The finite element model and theoretical model of the structure were constructed, and the sound absorption coefficient was calculated. Furthermore, the intrinsic sound absorption mechanism of the structure is elucidated from the perspectives of absolute sound pressure and sound velocity distribution, relative acoustic impedance, and complex frequency plane. Additionally, the impact of parameter variations on sound absorption curves was investigated. To verify the accuracy of the finite element calculations, experimental samples were fabricated for impedance tube experiments. The results demonstrate that the designed structure effectively realizes low-frequency broadband sound absorption with an average absorption coefficient of 0.89 in the range of 350–710 Hz with five units.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110966"},"PeriodicalIF":3.4,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702418","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 Helmholtz resonator based on spiral neck acoustic metamaterial for noise reduction 基于螺旋颈声学超材料的亥姆霍兹谐振器的降噪研究

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-24 DOI: 10.1016/j.apacoust.2025.110957

Samira Khodabakhsh, Mohammad R. Movahhedy, Kaivan Mohammadi

{"title":"A Helmholtz resonator based on spiral neck acoustic metamaterial for noise reduction","authors":"Samira Khodabakhsh, Mohammad R. Movahhedy, Kaivan Mohammadi","doi":"10.1016/j.apacoust.2025.110957","DOIUrl":"10.1016/j.apacoust.2025.110957","url":null,"abstract":"<div><div>Reduction of the noise generated by sound waves emitted from various sources in the audible range is of utmost importance for comfort of the residents. A novel approach to addressing this issue involves the use of acoustic metamaterials to suppress sound transmission. In this study, we focus on Helmholtz resonator-based acoustic metamaterials and propose a compact unit cell that achieves enhanced acoustic performance by shifting the sound transmission loss (STL) peak to lower frequencies without increasing the geometric footprint. By extending the length of the neck of the resonator through a spiral configuration, the resonant frequency is shifted downward, achieving STL at lower frequencies compared to conventional straight-neck designs −approximately reduced from 5000 Hz to 3000 Hz− due to localized resonance phenomena. Band structure analysis further highlights a downward shift in the first band gap for the spiral-neck unit cell design. Numerical simulations were performed to investigate the effect of various geometric parameters on the STL frequency and amplitude. Experimental validation was carried out using impedance tube measurements on 3D-printed samples. The results showed a 6 % deviation in the STL peak for C-shape resonators and a 12 % deviation for spiral-neck designs, attributed to geometric complexity. Scaling up to larger 5 × 5 arrays and adjusting the channel thickness according to fabrication precision (±0.2 mm) minimized discrepancies, emphasizing the importance of precise fabrication for consistent acoustic behavior. Furthermore, incorporating thermoviscous boundary layer effects −particularly in narrow air channels− in the simulations, improved agreement between simulation and experimental results.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110957"},"PeriodicalIF":3.4,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144696709","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

Bandgap-controlled acoustic interlayers for low-loss topology transmission 用于低损耗拓扑传输的带隙控制声学中间层

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-23 DOI: 10.1016/j.apacoust.2025.110959

Xiao Liang , Zhen Wang , Jiangxia Luo , Nansha Gao

{"title":"Bandgap-controlled acoustic interlayers for low-loss topology transmission","authors":"Xiao Liang , Zhen Wang , Jiangxia Luo , Nansha Gao","doi":"10.1016/j.apacoust.2025.110959","DOIUrl":"10.1016/j.apacoust.2025.110959","url":null,"abstract":"<div><div>Directional induction of acoustic waves has gained increasing attention in recent years. Conventional acoustic topological insulators have drawbacks such as geometrical complexity and difficult processing, which increase the difficulty of engineering applications. In this paper, we propose a scatterer-free and easy-to-machine sonic crystal structure to realize topological acoustic transmission by embedding a cylindrical cavity on a solid substrate. Compared with conventional acoustic metamaterial plates, this structure can significantly enhance the acoustic transmission capability due to the absence of dissipative effect of resonant cavities. The acoustic interlayer structure was designed in parallel, and it was found that band modulation could be realized by changing the distance between the interlayers. This modulation method is different from the traditional method of changing the scatterer structure, which is simpler and more convenient. In addition, the design of the interlayer with no scatterer on the surface allows the placement of various acoustic sensors in the interlayer to realize specific functions. This study provides new design ideas for lightweight devices, high-precision acoustic sensing and low-loss acoustic devices. It also provides a more convenient and effective tuning method to accelerate the engineering of acoustic metamaterials.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110959"},"PeriodicalIF":3.4,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687250","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

Application of extra reference signals for feedforward active noise control 附加参考信号在前馈主动噪声控制中的应用

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-23 DOI: 10.1016/j.apacoust.2025.110956

László Sujbert

{"title":"Application of extra reference signals for feedforward active noise control","authors":"László Sujbert","doi":"10.1016/j.apacoust.2025.110956","DOIUrl":"10.1016/j.apacoust.2025.110956","url":null,"abstract":"<div><div>By the increasing computational power of the controllers, multiple reference feedforward active noise control is of increasing interest. It is often utilized if the unwanted noise is generated by multiple sources or the positions of the sources are not known in advance. The performance of multiple reference feedforward systems has been investigated in the last decades regarding the attainable suppression, convergence speed, and computational burden. In the meantime, many applications have been published proving the efficacy of the approach. Several experiments show that in reverberating enclosures greater suppression can be obtained if the number of reference signals exceeds the number of noise sources. This paper provides the analysis of such control systems in the case of broadband excitation. It is proven that the application of extra reference signals shortens non-causal decay in the inverse of the reference path, enabling higher suppression, compared to the case where the number of the reference signals and noise sources are equal. The paper introduces the motivating experimental examples explained by the theoretical results and simulations.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110956"},"PeriodicalIF":3.4,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687370","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

Stable ultrasound sensing by a bilayer surface plasmon resonance type ultrasound sensor 双层表面等离子体共振型超声传感器的稳定超声传感

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-23 DOI: 10.1016/j.apacoust.2025.110967

Kota Dezao , Ayumi Matsudera , Yuki Harada , Shouta Kitajima , Shuta Kodama , Hayato Ichihashi , Mami Matsukawa

{"title":"Stable ultrasound sensing by a bilayer surface plasmon resonance type ultrasound sensor","authors":"Kota Dezao , Ayumi Matsudera , Yuki Harada , Shouta Kitajima , Shuta Kodama , Hayato Ichihashi , Mami Matsukawa","doi":"10.1016/j.apacoust.2025.110967","DOIUrl":"10.1016/j.apacoust.2025.110967","url":null,"abstract":"<div><div>The surface plasmon resonance (SPR) ultrasonic receiver is expected to have a flat frequency response in a wide frequency range, making it suitable for broadband ultrasonic detection. The Kretschmann-type SPR receiver is easy to reproduce because it has a simple structure of a glass prism coated by a thin metal layer. For practical application, we tried to prolong the lifetime of the sensor using a bilayer (Au + Ag) coating SPR receiver, making use of the sharp SPR curve of the Ag layer. The receiver successfully measured ultrasound in the MHz range and achieved stable ultrasonic reception for more than one year. The observed waveforms coincided with the waveforms measured by a calibrated conventional ultrasonic transducer. We also focused on the effect of the size and shape of the SPR receiver sensing area because the oblique incidence of the laser beam on the metal layer produces an elliptical sensing area. Introducing the circular and smaller size metal layer increased sensitivity at higher frequencies, illustrating the importance of the measurement area. Finally, we tried to measure ultrasonic waves up to 35 MHz using the bilayer receiver.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110967"},"PeriodicalIF":3.4,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687251","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

VSMKD: A new deconvolution method and application to rolling bearing fault diagnosis VSMKD：一种新的反卷积方法及其在滚动轴承故障诊断中的应用

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-23 DOI: 10.1016/j.apacoust.2025.110969

Lei Xing, Aijun Hu, Zhuohao Zhou, Ling Xiang, Kaijie Yang

{"title":"VSMKD: A new deconvolution method and application to rolling bearing fault diagnosis","authors":"Lei Xing, Aijun Hu, Zhuohao Zhou, Ling Xiang, Kaijie Yang","doi":"10.1016/j.apacoust.2025.110969","DOIUrl":"10.1016/j.apacoust.2025.110969","url":null,"abstract":"<div><div>The vibration signal of rolling bearing fault has significant periodic impulse characteristics, which is a crucial symbol for the fault diagnosis of rolling bearing. Commonly employed deconvolution methods use the invariable fault period as the basis for periodic selection. However, the actual fault period of the bearing vibration signal is not fixed and fluctuates randomly in a certain range, leading to the failure of these deconvolution methods in some condition. To overcome this limitation, this paper proposes a variable scale multipoint kurtosis deconvolution (VSMKD) method to extract bearing fault features accurately. A variable scale multipoint kurtosis is defined as target function to construct the optimal filter. A variable scale position weight vector is constructed and optimized in the fluctuation range to determine the fault fluctuation period. The fault characteristic frequency is extracted by analyzing the envelope of the deconvolution signal. The effectiveness of the proposed VSMKD is validated by experimental data which are difficult to diagnose. Results verify the advantages of the proposed VSMKD by comparing it with advanced methods.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110969"},"PeriodicalIF":3.4,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687371","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

High-resolution imaging of microdefects detected by laser ultrasound with grouped adjacent wave correlation subtraction 分组相邻波相关减法激光超声检测微缺陷的高分辨率成像

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-22 DOI: 10.1016/j.apacoust.2025.110962

Zenghua Liu , Yiyi Liu , Long Chen , Yanping Zhu , Haiyang Zhou , Rui Li , Meiling Wang , Cunfu He

{"title":"High-resolution imaging of microdefects detected by laser ultrasound with grouped adjacent wave correlation subtraction","authors":"Zenghua Liu , Yiyi Liu , Long Chen , Yanping Zhu , Haiyang Zhou , Rui Li , Meiling Wang , Cunfu He","doi":"10.1016/j.apacoust.2025.110962","DOIUrl":"10.1016/j.apacoust.2025.110962","url":null,"abstract":"<div><div>Laser ultrasound technology has become a key focus of nondestructive testing due to its non-contact, high-precision and suitability for harsh environments, but its multimode nature tends to lead to artifacts and noise in the imaging, reducing the resolution of defect detection. To meet the demand for high-resolution detection of sub-millimeter micro-defects, a laser ultrasound multi-mode total focusing method (TFM) imaging based on grouped adjacent wave correlation subtraction is proposed. Firstly, the full matrix capture (FMC) data are preprocessed by grouped adjacent wave correlation subtraction, grouped according to the relative positions of excitation-reception points, and the Pearson correlation coefficients of neighboring signals in the same group are calculated for signal phase subtraction, which effectively suppress the coherent noise caused by multimode characteristics. Further, the phase entropy coherence factor (ECF) is proposed to weight the TFM images to enhance the defect signals by quantifying the concentration of the phase distribution, which further reduce the effects of mode artifacts, background noise, and residual surface waves on the defect images, and further improves the defect resolution. Experiments are performed on 7075 aluminum alloy specimens with 0.3 mm and 0.5 mm side drilled hole (SDH) and blind hole (BH) defects. The imaging results show that multi-modal fusion imaging combined with ECF weighting after grouped neighbor wave coherent phase subtraction preprocessing significantly improve the defect resolution, and the relative error of defect size quantification is less than 10 %. The method proposed in this paper provides a reliable means for the quantitative detection of sub-millimeter micro-defects, which has important engineering application value.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110962"},"PeriodicalIF":3.4,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144678737","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

Gearbox noise and vibration control based on multiple-objective optimization of helical gear microgeometry 基于多目标优化的齿轮箱噪声与振动控制

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-21 DOI: 10.1016/j.apacoust.2025.110955

Yixuan Hou , Zufei Liu , Xiuzhi He , Shuang Wang , Qiang Liu , Xiaoqin Zhou

{"title":"Gearbox noise and vibration control based on multiple-objective optimization of helical gear microgeometry","authors":"Yixuan Hou , Zufei Liu , Xiuzhi He , Shuang Wang , Qiang Liu , Xiaoqin Zhou","doi":"10.1016/j.apacoust.2025.110955","DOIUrl":"10.1016/j.apacoust.2025.110955","url":null,"abstract":"<div><div>The excitation of gear meshing is widely recognized as the primary cause of gearbox whine noise, leading to significant noise, vibration, and harshness (NVH) issues that adversely affect both the driving experience and the service life of the gearbox. Implementing sound insulation measures alone cannot provide a permanent and economical solution to improve the vehicle gearbox NVH performance. Transmission error (TE) has been regarded as an important indicator for NVH performance of gear systems. However, due to the complex dynamic characteristics of gearbox, a significant gap persists in understanding the relationship between TE and gearbox NVH performance. This study aims to bridge this gap by experimentally investigating the correlation between TE and gearbox NVH performance with experimental investigations, and addressing the gearbox NVH issue through helical gear microgeometry optimization based on the genetic algorithm. To this end, the vehicle road tests were conducted to preliminarily identified the source of the gearbox whine noise with order analysis. Subsequently, the semi-anechoic gearbox bench test was conducted to isolate ambient noise, enabling an independent investigation of gearbox whine noise and its correlation with TE. To reduce the fluctuation of TE, the microgeometry of problem helical gear pair was optimized with genetic algorithm. Four cases of optimized helical gear microgeometries were introduced into a validated coupled dynamics-finite element gearbox model to assess their impacts on TE and tooth surface contact load maldistributions. The results demonstrated that the optimized microgeometry significantly reduced TE fluctuation and relieved tooth surface load maldistribution, thereby enhancing gearbox NVH performance.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110955"},"PeriodicalIF":3.4,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670616","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