Mechanical Systems and Signal Processing最新文献

{"title":"Series gravity-based track nonlinear energy Sinks: Design and experiment","authors":"Ting-Kai Du ,&nbsp;Yi Lin ,&nbsp;Jin-Chen Ji ,&nbsp;Hu Ding","doi":"10.1016/j.ymssp.2025.112559","DOIUrl":"10.1016/j.ymssp.2025.112559","url":null,"abstract":"<div><div>How to improve the robustness of nonlinear energy sinks (NES) to excitation strength is always a challenging issue in the design of NES. This paper combines the gravity-based track NES (GT-NES) with the two-degree-of-freedom (2DOF) series design strategy and proposes a 2DOF series gravity-based track NES (SGT-NES) to increase the robustness of excitation and achieve a large parameter selection range. For the single-degree-of-freedom system, the vibration reduction dynamic model of SGT-NES, series NES, and GT-NES is established. Through dynamic analysis, the influence of parameters on the vibration reduction of SGT-NES is studied and verified by numerical simulation. In addition, the vibration reduction performance of SGT-NES, series NES, and GT-NES is compared. The results show that SGT-NES can achieve effective vibration reduction in a wider parameter range. Moreover, SGT-NES can maintain a large parameter range without frequency islands. Therefore, SGT-NES exhibits a stronger adaptability to excitation strength. A two-degree-of-freedom SGT-NES prototype is designed. The vibration reduction of SGT-NES and its parameter influence trend are verified by experiments. Therefore, this research proposes an effective device with a wide range of parameter adaptability for engineering vibration control.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"229 ","pages":"Article 112559"},"PeriodicalIF":7.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergizing stopper mechanisms, coil configurations and quasi-linearity for enhanced adaptability in dual-beam 2DOF electromagnetic energy harvesters","authors":"Tunde Isaiah Toluwaloju ,&nbsp;Chung Ket Thein ,&nbsp;Dunant Halim","doi":"10.1016/j.ymssp.2025.112570","DOIUrl":"10.1016/j.ymssp.2025.112570","url":null,"abstract":"<div><div>This study investigates the benefits and challenges of asymmetric stopper control and different coil connection modes in dual beam harvester designs, aiming to optimize vibration energy harvesting systems for enhanced renewable energy applications and self-powered devices. The work demonstrates that the dynamic response and potential of the system affect the cantilever’s damping-stiffness matrix during impacts. General engineering analysis established limits for non-quasi-static linearity at stress ratio of 0.80 is the operational safety threshold before full fatigue occurs. Analytical and experimental validations at equivalent stress/bending moment reveal that polyvinylchloride laminate (PVC) attained the largest damping-critical stress gradient compared to other polymeric (polyether ether ketone (PEEK) and Glassfiber) or nonpolymeric (stainless steel and aluminum) material. Therefore, polymeric showed quick fatigue stress at respective maximum non-quasi-linear contact stiffness of 0.1150, 0.9495, 0.8575, 2.6352, 1.2206 <span><math><mrow><mi>M</mi><mi>N</mi><msup><mrow><mi>m</mi></mrow><mrow><mo>-</mo><mfrac><mn>3</mn><mn>2</mn></mfrac></mrow></msup></mrow></math></span> at 80. 00 % fatigue stress level. Also, within tested the polymeric family, high damping-critical stress gradient indicates capacity for larger microstructural deformation before failure such that quasi linear weak softening approximation is acceptable when maximum bending to fatigue stress ratio ≤0.8. In evaluating the electrical connections, it was found that while individual transducer coils can power dual load sensors concurrently, bandwidth is compromised with materials exhibiting lower damping-critical stress gradients. Notably, the normalized power density improved by 91.45 %, reaching <span><math><mrow><msup><mrow><mi>W</mi><mi>m</mi></mrow><mrow><mo>-</mo><mn>5</mn></mrow></msup><msup><mrow><mi>s</mi></mrow><mn>5</mn></msup></mrow></math></span> and 2.435 <span><math><mrow><msup><mrow><mi>W</mi><mi>m</mi></mrow><mrow><mo>-</mo><mn>5</mn></mrow></msup><msup><mrow><mi>s</mi></mrow><mn>5</mn></msup></mrow></math></span> with fiberglass-aluminum cantilever pairs. Additionally, increasing the stopper gap enhances post-resonance bandwidth by up to 68.35 %, although this results in a power reduction of 31.40 %. These results underscore the trade-offs between harvested power and bandwidth, highlighting the efficacy of pairing polymeric and non-polymeric cantilevers in dual beam systems for optimized energy harvesting.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"229 ","pages":"Article 112570"},"PeriodicalIF":7.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Baseline-free damage imaging of CFRP lap joints using K-means clustering of guided wave signals","authors":"Mohsen Barzegar ,&nbsp;Sahar Moradi Cherati ,&nbsp;Dario J. Pasadas ,&nbsp;Chiara Pernechele ,&nbsp;Artur L. Ribeiro ,&nbsp;Helena G. Ramos","doi":"10.1016/j.ymssp.2025.112562","DOIUrl":"10.1016/j.ymssp.2025.112562","url":null,"abstract":"<div><div>Ultrasonic Guided Waves (UGWs) have received significant attention for structural health monitoring (SHM) applications in various structures. However, their application in adhesively bonded Carbon Fiber Reinforced Polymer (CFRP) joints faces considerable challenges due to the high anisotropy of CFRP, complex guided wave behavior, and multiple mode conversions. As a result, baseline-free damage imaging using conventional algorithms experiences significant difficulties. This paper proposes a baseline-free damage imaging methodology for SHM applications, introducing a novel damage index calculation formula. The methodology is a modified Reconstruction Algorithm for Probabilistic Inspection of Defects (RAPID) that incorporates an innovative damage index formula based on K-means clustering. This unsupervised approach assigns scores by identifying patterns or anomalies in the data through clustering similar behaviors. Additionally, scaling factors for different transmitter–receiver pairs are modified, considering the first Fresnel zone to enhance accuracy. In this work, multiple features are extracted from the recorded signals across various domains and ranked based on their locality-preserving ability. The top-ranked features are then utilized in K-means clustering to calculate the damage index score. The study employs parallel arrays of piezoelectric transducers on both sides of an anisotropic CFRP adhesive joint with two different sizes of artificial disbonds. The performance of the proposed approach is validated through both numerical simulations and experimental methods. Finally, a comprehensive analysis is conducted to assess the significance of each variable on the overall accuracy of damage imaging and localization.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"229 ","pages":"Article 112562"},"PeriodicalIF":7.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of spline tooth wear on self-excited vibration of floating splined rotor: Numerical and experimental investigation","authors":"Yingjie Li ,&nbsp;Guang Zhao ,&nbsp;Yunbo Yuan ,&nbsp;Zhaoyang Liu ,&nbsp;Bingshan Kang ,&nbsp;Chenxin Wang","doi":"10.1016/j.ymssp.2025.112580","DOIUrl":"10.1016/j.ymssp.2025.112580","url":null,"abstract":"<div><div>Spline tooth wear affects the dynamic characteristics of the floating splined rotor, leading to significant nonlinear phenomena. This study develops a three-dimensional model of the spline based on the observed wear morphology of floating splines. Taking into account the uneven stress distribution along the tooth facewidth direction, a stiffness and damping model for the worn spline is derived and applied to the floating splined rotor. The results show that spline tooth wear reduces natural frequencies and increases both the likelihood and the amplitude of self-excited vibrations of the splined rotor. Investigations using the spline-rotor test rig revealed that the frequencies of self-excited vibrations during speed up and speed down experiments vary due to different wear degrees on the working and non-working tooth surfaces. Furthermore, for the floating splined rotor with spline tooth wear, the likelihood of self-excited vibrations decreases as the applied torque increases.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"229 ","pages":"Article 112580"},"PeriodicalIF":7.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Damage imaging in aircraft structures using low-frequency elastic guided waves","authors":"Aurovinda Kumar Mitra ,&nbsp;Manish Kumar Mehta ,&nbsp;Aparna A. Aradhye ,&nbsp;Dhanashri M. Joglekar","doi":"10.1016/j.ymssp.2025.112539","DOIUrl":"10.1016/j.ymssp.2025.112539","url":null,"abstract":"<div><div>The aim of this paper is to develop a framework for the non-destructive evaluation (NDE) of aircraft structures comprising tapered honeycomb sandwich composites by utilizing the propagation of the low-frequency fundamental antisymmetric guided wave mode, specifically focusing on group speed variations due to the continuously changing waveguide thickness. To this end, a tapered honeycomb sandwich composite with GFRP face sheets and an aluminium honeycomb core containing a circular debond damage is modeled numerically, while experimentally, a real-life helicopter blade specimen is inspected for the presence of an artificial damage created by an in-house designed low-speed impact test setup. The numerical and experimental wavefield representations demonstrated significant interruptions in the wavefield patterns due to the presence of damage, whereas smooth patterns are observed in the pristine structures. The out-of-plane A-scan responses in both types of investigations illustrated a substantial magnification of the amplitude of the propagating guided wave mode due to the presence of damage. The damage source is eventually localized using the proposed total focusing method with full matrix capture-based health monitoring framework. Furthermore, the resulting color contour map is subjected to a thresholding technique by incorporating an appropriate threshold value to efficiently determine the damaged area, both numerically and experimentally. The robustness of the proposed damage detection technique is verified by the effective localization of multiple debond zones of variable dimensions in a tapered honeycomb sandwich composite model.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"229 ","pages":"Article 112539"},"PeriodicalIF":7.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transient sound field reconstruction using time domain nearfield acoustic holography based-variational Bayesian augmented Kalman filter","authors":"Lin Geng,&nbsp;Hao Shen,&nbsp;Chun-Dong He,&nbsp;Wei Chen,&nbsp;Feng Xie","doi":"10.1016/j.ymssp.2025.112540","DOIUrl":"10.1016/j.ymssp.2025.112540","url":null,"abstract":"<div><div>A time domain nearfield acoustic holography based-variational Bayesian augmented Kalman filter is proposed to enhance the stability of transient sound field reconstruction process and improve the reconstruction accuracy. In the proposed method, the time-evolving pressure in the near field is first modeled via the summation of time convolution relating the time-wavenumber pressure spectra of virtual source plane to time-domain propagation kernel. Then, eigensystem realization algorithm (ERA) is employed for gaining a minimal state-space realization in a system, which facilitates the formulas of process and measurement in conjunction with first-order smoothness condition. Subsequently, the simultaneous estimation model of dynamic states and time-evolving measurement noise parameter in a linear system is established, in which a separable variational Bayesian approximation of the joint posterior distribution of states and noise parameter is constructed. Besides, the state vector and time-wavenumber pressure spectra are jointly estimated through a forward iteration using the augmented Kalman filter, and the time-evolving noise parameter is determined via a fixed-point iteration. Finally, the estimated time-wavenumber pressure spectra on the virtual source plane are utilized to calculate the time-evolving pressure on the reconstruction plane by a time convolution. A vibrating plate is used to produce a transient sound field, which is designed as a numerical simulation. The quantitative and qualitative comparisons confirm that the proposed method can great reconstruct the transient sound field in time–space domains. Concurrently, some parameters, for example, positions of hologram and virtual source planes, wavenumber domain sampling point, signal-to-noise ratio and truncation parameter, are discussed in detail, and the superiorities of the proposed method in terms of stability and robustness are testified by comparing with TPSM. Furthermore, an experimental study involving an impacted plate is carried out to validate the effectiveness and superiority of the proposed method.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"229 ","pages":"Article 112540"},"PeriodicalIF":7.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3DWDC-Net: An improved 3DCNN with separable structure and global attention for weld internal defect classification based on phased array ultrasonic tomography images","authors":"Shaofeng Wang ,&nbsp;Erqing Zhang ,&nbsp;Luncai Zhou ,&nbsp;Yongquan Han ,&nbsp;Wenjing Liu ,&nbsp;Jun Hong","doi":"10.1016/j.ymssp.2025.112564","DOIUrl":"10.1016/j.ymssp.2025.112564","url":null,"abstract":"<div><div>Recent advances in intelligent classification for weld internal defect have yielded high identification accuracy under controlled laboratory conditions. However, industrial applications still predominantly rely on manual expertise. This discrepancy stems from the lack of consistency among same defect type and insufficient differentiation between distinct defect types in ultrasonic detection signals used as input for intelligent recognition networks. To address this challenge, we developed a robotic arm-assisted ultrasonic phased array automated detection platform, enabling the acquisition of defect tomography images. Furthermore, we proposed a novel internal defect type identification model for welds (3DWDC-Net) that meets both classification accuracy and efficiency requirements. 3DWDC-Net offers two significant contributions to the field. Firstly, ultrasonic tomography images were used for the first time to solve the problem of classifying internal defects in welds. This pioneering approach increase the possibility of applying intelligent classification methods to industrial on-site judgment of weld defect types. Secondly, in order to compensate for the accuracy loss resulting from the lightweight design, we propose a novel attention module. This module is meticulously designed with the characteristics of lightweight structures in mind and effectively collaborates with them, thereby enhancing the model’s recognition accuracy. Experimental results demonstrate that 3DWDC-Net achieves a recognition accuracy of 99.3%, surpassing state-of-the-art traditional classifier recognition methods, advanced deep learning approaches, and conventional 3D convolutional neural network techniques. Moreover, comparative studies indicate that 3DWDC-Net is particularly well-suited for industrial field detection, outperforming other cutting-edge intelligent identification methods.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"229 ","pages":"Article 112564"},"PeriodicalIF":7.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Harmonic narrowband active noise control system with linear and nonlinear phase secondary path modeling for rotating machinery","authors":"Lei Luo ,&nbsp;Wenzhao Zhu ,&nbsp;Xia Zhang ,&nbsp;Weihe Ren ,&nbsp;Yuan Hu","doi":"10.1016/j.ymssp.2025.112545","DOIUrl":"10.1016/j.ymssp.2025.112545","url":null,"abstract":"<div><div>In light of the harmonic characteristics often exhibited by narrowband noise from rotating machinery, this paper proposes a harmonic narrowband active noise control (HNANC) system to reduce the computational burden caused by filtering the secondary path modeling. The innovation lies in the method of secondary path estimation filtering: when the secondary path has linear phase characteristics, only the fundamental narrowband component is filtered, regardless of the total number of narrowband components present. Conversely, when the secondary path exhibits nonlinear phase characteristics, only a selective subset of the narrowband components undergoes the secondary path estimation filtering process. This approach notably curtails computational complexity, particularly in environments featuring multiple frequency noise components. Furthermore, an online local secondary estimation method only for a selective subset of the narrowband components is introduced in the HNANC framework, which further reduces the computational complexity of the NANC with online secondary modeling. To substantiate its effectiveness, the convergence and steady-state error of the conventional method, its optimized version, and HNANC using both offline and online, as well as linear and nonlinear phase secondary path modeling, are compared across various narrowband noise environments. Moreover, the proposed HNANC system, both with offline and online secondary modeling, undergoes testing on a duct ANC platform for exhaust fan noise. This practical validation helps underscore the potential real-world applicability of the HNANC system.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"229 ","pages":"Article 112545"},"PeriodicalIF":7.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dissipation manipulation via programmable holes and bumps: A complete model to evaluate and harness squeeze-film damping of resonators","authors":"Zeyu Jia ,&nbsp;Jinshuai Sun ,&nbsp;Xiaoxu Wang ,&nbsp;Mengqi Sun ,&nbsp;Yuhao Wang ,&nbsp;Qixuan Zhu ,&nbsp;Miao Lei ,&nbsp;Xiang Xu ,&nbsp;Jian Bai ,&nbsp;Wei Huang ,&nbsp;Qianbo Lu","doi":"10.1016/j.ymssp.2025.112574","DOIUrl":"10.1016/j.ymssp.2025.112574","url":null,"abstract":"<div><div>Squeeze-film damping, stemming from the drag effect generated when fluid flows in and out between two relatively moving surfaces, plays an important role in the energy dissipation of the resonator. Thorough understanding and harnessing of this dissipation could significantly enhance the performance of resonators and suggest new areas of practical application. However, existing research on this damping is limited to specific scenarios, such as circular or rectangular plates and fully perforated plates, which limits the tuning of damping and quality factors in broader applications. Here, we report on a novel dissipation tuning route via programmable holes and bumps, achieving large-scale and precise quality factor manipulation. Moreover, a complete model is established to successfully predict squeeze-film damping under various conditions, including diverse geometric shapes, complex boundary conditions, and different fluid environments. In addition, compared to existing models, the proposed model fully considers the impacts of microstructures (holes and bumps) with different geometries, numbers, and distributions on damping. The model is meticulously validated through systematic experiments, with deviations smaller than 10%. The experimental results also demonstrate that the tuning methodology achieves quality factor switching over more than five orders of magnitude for resonators with huge size differences (ranging from micrometers to centimeters). Our work serves as the underpinning for damping design and paves the way for harnessing the dynamic performance of resonators in fluid environments, which opens up applications in sensing and fundamental science.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"229 ","pages":"Article 112574"},"PeriodicalIF":7.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The trade-off between structural control and vibration-based energy harvesting: Experimental assessment on a lightweight footbridge","authors":"Javier Naranjo-Pérez ,&nbsp;María Infantes ,&nbsp;Christian Gallegos-Calderón ,&nbsp;Javier Fernando Jiménez-Alonso","doi":"10.1016/j.ymssp.2025.112523","DOIUrl":"10.1016/j.ymssp.2025.112523","url":null,"abstract":"<div><div>This paper presents a promising trade-off strategy for simultaneous vibration control and energy harvesting in lightweight structures, addressing the increasing need for real-time and autonomous monitoring of actual civil engineering infrastructures. Sensor networks typically require a power supply for data measurement and transmission, which entails significant challenges for structures in remote areas due to battery maintenance issues. This study explores the feasibility of piezoelectric energy harvesting through an experimental campaign involving a controlled fibre-reinforced polymer footbridge equipped with a tuned mass damper. Different configurations are analysed with the aim of evaluating the novel possibility of placing the harvester on the vibration absorber, in order to leverage its relatively high amplitude and harmonic motion. Dynamic loads due to pedestrians include gait frequency variations tests, group of pedestrians and pedestrian streams. Peak response statistics are used to evaluate the harvested energy for the different configurations, highlighting the potential for optimizing energy harvester placement to maximize power output. Also, a feasibility study of the power output of the harvester device to supply energy to sensors is conducted. The methodology, experimental setup, and analysis of different configurations are detailed, with conclusions reinforcing the effectiveness of placing the harvesting device on the control device. This dual-function device concept balances vibration control and energy harvesting, presenting a practical solution for the current paradigm of structural design. This strategy is particularly relevant for footbridges, which often face high-level accelerations and vibration serviceability limit state challenges. The study underscores the potential of this approach to enhance the sustainability and efficiency of monitoring systems for civil engineering infrastructures, demonstrating significant promise for enhancing the performance of piezoelectric harvesters in operational structural vibrations, advancing towards self-powered sensors.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"229 ","pages":"Article 112523"},"PeriodicalIF":7.9,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}