Noise Control Engineering Journal最新文献

Effect of geometrical defects on the acoustical transport properties of periodic porous absorbers manufactured using stereolithography 几何缺陷对立体光刻制造的周期性多孔吸收材料声传输特性的影响

4区工程技术

Noise Control Engineering Journal Pub Date : 2023-09-01 DOI: 10.3397/1/377129

Amulya Lomte, Bhisham Sharma

{"title":"Effect of geometrical defects on the acoustical transport properties of periodic porous absorbers manufactured using stereolithography","authors":"Amulya Lomte, Bhisham Sharma","doi":"10.3397/1/377129","DOIUrl":"https://doi.org/10.3397/1/377129","url":null,"abstract":"Additive manufacturing allows the fabrication of acoustical materials with previously unrealizable micro- and macrostructural complexities. However, the still nascent understanding of various geometrical defects occurring during the additive process remains a barrier to accurately predicting the acoustical behavior of such complex absorbers. In this study, we present the results from our efforts on numerically modeling the absorption behavior of periodic porous absorbers fabricated using the stereolithography (SLA) technique using the hybrid micro-macro multiphysics approach. Specifically, we focus on understanding the role played by the expansion or shrinkage of the solid ligaments during the SLA process on the acoustical properties of the final printed samples. First, the periodic absorbers are modeled using COMSOL multiphysics, where the transport properties are derived using the micro-modeling method and sound absorption behavior using the Johnson-Champoux-Allard-Lafarge-Pride semi-empirical model. Then, results from the expansion study guide the changes in the ligament sizes in the unit cell modeling. Finally, the fabricated samples are tested using an impedance tube, and the measured absorption properties are compared to the a priori numerical predictions. Results indicate that accounting for fabrication defects within the numerical modeling schema can provide reliable sound absorption predictions for additively manufactured porous absorbers.","PeriodicalId":49748,"journal":{"name":"Noise Control Engineering Journal","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135687197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and analysis of periodic acoustic metamaterial sound insulator using finite element method 周期声学超材料隔声体的有限元设计与分析

4区工程技术

Noise Control Engineering Journal Pub Date : 2023-09-01 DOI: 10.3397/1/377128

Zacharie Laly, Christopher Mechefske, Sebastian Ghinet, Charly T. Kone, Noureddine Atalla

{"title":"Design and analysis of periodic acoustic metamaterial sound insulator using finite element method","authors":"Zacharie Laly, Christopher Mechefske, Sebastian Ghinet, Charly T. Kone, Noureddine Atalla","doi":"10.3397/1/377128","DOIUrl":"https://doi.org/10.3397/1/377128","url":null,"abstract":"In this article, a design of acoustic metamaterial containing Helmholtz resonators periodically embedded in a porous material is investigated for aerospace applications using the finite element method (FEM). The results obtained using the FEM are compared with the results of the theory, and the proposed transfer matrix method and good agreements are obtained. The transfer matrix method was combined with FEM calculations for two different termination conditions (plane wave radiation and rigid wall) in order to retrieve the equivalent matrix of the porous layer with the integrated periodic resonator. The equivalent matrix is then coupled analytically in series with others matrices. Finite element method studies are carried out on single and double wall configurations, and the effects of different resonator parameters and the air gap on the transmission loss are illustrated. The influences of the orientation of the neck opening and the resistivity of the porous material are also studied. Finite element method results for different incident angles are presented for single and double wall configurations. The proposed design can potentially be integrated into the panels of aircraft cabins in order to reduce the noise level at low frequencies inside the cabin.","PeriodicalId":49748,"journal":{"name":"Noise Control Engineering Journal","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135687199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep learning-based mechanical fault detection and diagnosis of electric motors using directional characteristics of acoustic signals 基于声信号方向特征的深度学习电机机械故障检测与诊断

4区工程技术

Noise Control Engineering Journal Pub Date : 2023-09-01 DOI: 10.3397/1/377132

Srinivasa Ippili, Matthew B. Russell, Peng Wang, David W. Herrin

{"title":"Deep learning-based mechanical fault detection and diagnosis of electric motors using directional characteristics of acoustic signals","authors":"Srinivasa Ippili, Matthew B. Russell, Peng Wang, David W. Herrin","doi":"10.3397/1/377132","DOIUrl":"https://doi.org/10.3397/1/377132","url":null,"abstract":"Early identification of rotating machinery faults is crucial to avoid catastrophic fail- ures upon installation. Contact-based vibration acquisition approaches are traditionally used for the purpose of machine health monitoring and end-of-line quality control. In complex working conditions, it can be difficult to perform an accurate accelerometer based vibration test. Acoustic signals (sound pressure and particle velocity) also contain important information about the operating state of mechanical equipment and can be used to detect different faults. A deep learning approach, namely, one-dimensional convolutional neural networks (1D-CNNs) can directly process raw time signals, thereby eliminating the human dependence on fault feature extraction. An experimental research study is conducted to test the proposed 1D-CNN methodology on three different electric motor faults. The results from the study indicate that the fault detection performance from the acoustic-based measurement method is very effective and thus can be a good replacement to the conventional accelerometer-based methods for detection and diagnosis of mechanical faults in electric motors.","PeriodicalId":49748,"journal":{"name":"Noise Control Engineering Journal","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135687295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","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 fast optimal reference sensor placement in active road noise control 道路噪声主动控制中参考传感器快速优化配置研究

4区工程技术

Noise Control Engineering Journal Pub Date : 2023-09-01 DOI: 10.3397/1/377126

Xiaolong Li, Chihua Lu, Wan Chen, Yawei Zhu, Can Cheng

{"title":"Research on fast optimal reference sensor placement in active road noise control","authors":"Xiaolong Li, Chihua Lu, Wan Chen, Yawei Zhu, Can Cheng","doi":"10.3397/1/377126","DOIUrl":"https://doi.org/10.3397/1/377126","url":null,"abstract":"The noise reduction performance of the active road noise control (ARNC) system highly depends on the location of the reference sensors. Generally, the optimal sensor locations are evaluated by calculating the multiple coherence function (MCF) between all possible reference signal combinations with road noise. However, this trial-and- error method becomes time-consuming when the number of candidate locations is large. The transfer path analysis method can select the optimal sensor locations quickly while with low accuracy. Therefore, this article proposes two fast optimal sensor placement (FOSP) methods, namely, Wiener filter (WF)-FOSPand the MCF-FOSP, respectively. In both methods, the sensors are iteratively extended to the desired number, and each added sensor maximizes the predicted noise reduction of this iteration loop. Numerous ARNC simulations based on measured signals are conducted to illustrate the performance of the proposed two methods in terms of efficiency and accuracy. The results demonstrate that the WF-FOSP method provides the best comprehensive performance. The data analysis for one operating condition takes three minutes, and the absolute error is within 5% with respect to the benchmark. In addition, two schemes are discussed to obtain a set of sensor locations compatible with the noise reduction requirement of different operating conditions. The sensor locations can achieve a maximum average noise reduction of 7.29 dB(A) under four operating conditions.","PeriodicalId":49748,"journal":{"name":"Noise Control Engineering Journal","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135687191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Warmstarting strategies for convex optimization based multi-channel constrained active noise control filter design 基于凸优化的多通道约束有源噪声控制滤波器热启动策略设计

4区工程技术

Noise Control Engineering Journal Pub Date : 2023-09-01 DOI: 10.3397/1/377127

Yongjie Zhuang, Zhuang Mo, Yangfan Liu

{"title":"Warmstarting strategies for convex optimization based multi-channel constrained active noise control filter design","authors":"Yongjie Zhuang, Zhuang Mo, Yangfan Liu","doi":"10.3397/1/377127","DOIUrl":"https://doi.org/10.3397/1/377127","url":null,"abstract":"In real-world applications of active noise control (ANC) systems, various constraints are supposed to be satisfied in the controller design process. The optimal control filter coefficients can be obtained by solving a constrained optimization problem, which usually requires a significant computational effort. Recently, a convex formulation in conic form was proposed for ANC filter design. The proposed formulation was shown to result in a computational time reduction by several orders of magnitude. It is of great interest to further improve its efficiency by using a priori information of the optimal filter coefficients. One potential way of achieving this goal is to introduce a warmstart technique so that the filter solution of a similar system or environment can be referred to for selecting the starting point of the optimization algorithm. However, the conic formulation should be solved by the interior-point method, which, in general, is challenging for applying warmstart techniques. In the current work, relaxation methods are proposed to the constraints of original ANC filter design formulation so that the warmstart techniques can be applied. Then, a warmstarting technique proposed in previous study is used to solve a series of perturbed problems, and the performance of the warmstarting technique is investigated. Results show that with the proposed modifications applied, the warmstarting strategy can significantly reduce the number of iterations needed for solving the conic formulation of the ANC filter design problem without much tuning efforts, and the method is effective and robust in various environmental setups.","PeriodicalId":49748,"journal":{"name":"Noise Control Engineering Journal","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135687194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward high-quality X-59 sonic thump measurements 迈向高质量的X-59音波测量

4区工程技术

Noise Control Engineering Journal Pub Date : 2023-09-01 DOI: 10.3397/1/377130

Mark C. Anderson, Kent L. Gee, J. Taggart Durrant, Alexandra Loubeau

引用次数: 1

Experimental dynamic flow characterization of hydraulic bushings 液压衬套的实验动态流动特性

4区工程技术

Noise Control Engineering Journal Pub Date : 2023-09-01 DOI: 10.3397/1/377131

Britton DeGarmo, Michael Kennedy, Luke Fredette

{"title":"Experimental dynamic flow characterization of hydraulic bushings","authors":"Britton DeGarmo, Michael Kennedy, Luke Fredette","doi":"10.3397/1/377131","DOIUrl":"https://doi.org/10.3397/1/377131","url":null,"abstract":"The dynamic properties of hydraulic bushings are often modeled in the time and frequency domains with low-order, lumped-parameter models, typically assuming steady developed flow in their fluid passages, whereas in situ flow conditions are unlikely to meet such criteria. Hydraulic bushings exhibit tuned properties emerging from nonlinear interactions involving these flow characteristics, so higher resolution descriptions of the underlying physics are needed under realistic flow conditions. This paper discusses an approach to isolate the fluid passage features in production bushings to enable experimental characterization for steady, oscillatory, and transient flow. More robust models of dynamic responses in the time and frequency domains are expected to result from this more precise determination of each flow path's contribution to the nonlinear system response. An apparatus capable of generating steady and dynamic flow is proposed, and some validation data are given to demonstrate the functionality of the experiment. Some challenges with the approach are considered, including the system's hydraulic compliance and cavitation. The flow testing apparatus is used on an example two-passage production bushing adapted for controlled steady or dynamic flow through one or both flow paths. Finally, some nonlinear flow properties of a typical hydraulic bushing's flow passages are given.","PeriodicalId":49748,"journal":{"name":"Noise Control Engineering Journal","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135687293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A constrained multi-channel hear-through filter design approach using active control formulations 使用主动控制公式的约束多通道透听滤波器设计方法

4区工程技术

Noise Control Engineering Journal Pub Date : 2023-09-01 DOI: 10.3397/1/377133

Juhyung Kim, Yongjie Zhuang, Yangfan Liu

{"title":"A constrained multi-channel hear-through filter design approach using active control formulations","authors":"Juhyung Kim, Yongjie Zhuang, Yangfan Liu","doi":"10.3397/1/377133","DOIUrl":"https://doi.org/10.3397/1/377133","url":null,"abstract":"In many daily communication environments, especially during a pandemic era, partitioning structures are placed between people for security or virus concerns, for example, partitions in classrooms, banks, and retail stores. Distortion occurs when sound propagates through these partitions, which can cause distractions in communication and degrade the service quality. In the current work, a constrained multi-channel active hear-through system is proposed to provide a solution to provide more natural sound communication environments and prevent sound distortions due to partitioning structures. The proposed method can preserve both the spectrum and the spatial distribution of the original sound field (the sound field when the partition is absent). This research opens the potential for future development of multi-channel two-way communication systems and improvement in existing augmented reality techniques. Experimental results show that, compared with the traditional direct inverse filter design method, the proposed method can reduce the comb-filtering effect effectively. The constraints applied to the filter design procedure can also prevent instability caused by the acoustic feedback loop.","PeriodicalId":49748,"journal":{"name":"Noise Control Engineering Journal","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135687195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Band gaps in an acoustic metamaterial composed of resonator with elastic support 具有弹性支撑的谐振腔组成的声学超材料中的带隙

IF 0.4 4区工程技术

Noise Control Engineering Journal Pub Date : 2023-07-01 DOI: 10.3397/1/377121

Shengping Fan, Jing Li, Linyong Li, Xiaopeng Fan, Hualiang Li, Nansha Gao

引用次数: 0

Case study: Noise attenuating performance of perforated corrugated lined straight-through perforated pipe-resistant muffler 案例研究:穿孔波纹内衬直通穿孔管消声器的噪声衰减性能

4区工程技术

Noise Control Engineering Journal Pub Date : 2023-07-01 DOI: 10.3397/1/377123

Zhenhua Hou, Qigan Wang, Tengfei Si, Shiqiang Zhang

{"title":"Case study: Noise attenuating performance of perforated corrugated lined straight-through perforated pipe-resistant muffler","authors":"Zhenhua Hou, Qigan Wang, Tengfei Si, Shiqiang Zhang","doi":"10.3397/1/377123","DOIUrl":"https://doi.org/10.3397/1/377123","url":null,"abstract":"Noise of internal combustion engine is the main source of noise pollution, and mufflers are the main means to reduce exhaust noise of internal combustion engine. In the process of improving the acoustic performance of the exhaust muffler based on the three-dimensional numerical method, the influence of the high speed and high temperature airflow discharged by the engine in the actual working process on the acoustic performance of the exhaust muffler is often ignored, which leads to the obvious deviation between the predicted results and the actual situation. In this paper, based on the structural optimization design of the straight-through perforated pipe resistance muffler, the noise characteristics of the straight-through perforated pipe resistance muffler with perforated corrugated lining was analyzed considering the airflow velocity and temperature inside the muffler. The influence of temperature and velocity fields on the acoustic performance of muffler was studied by using numerical simulation method, which takes the solution results inside muffler as boundary conditions of sound field analysis. The influence of changing the internal structure of muffler on the aerodynamic performance of muffler was discussed, and the pressure loss is analyzed. The research has shown that adding perforated corrugated lining inside muffler could effectively improve the transmission loss of muffler and the noise reduction performance of prototype straight-through perforated pipe-resistant muffler.","PeriodicalId":49748,"journal":{"name":"Noise Control Engineering Journal","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135761898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0