Article
Engineering, Mechanical
Weiping Yang, Yatsze Choy, Ying Li
Summary: In this study, the sound absorption performance of a wavy micro-perforated panel absorber (WMPPA) is investigated. The WMPPA exhibits promising potential for the control of low-frequency and broadband noise, with improved sound absorption performance at lower frequencies and additional absorption peaks in the middle to high-frequency range. The study validates the proposed model and uncovers the acoustical properties and performance enhancements of the WMPPA.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Mechanical
Xiang Liu, Chunqi Wang, Yumin Zhang, Lixi Huang
Summary: An investigation into a smart micro-perforated panel aims to enhance the sound absorption performance of MPP absorbers at low frequencies, utilizing a combination of mechanical damping, electrical shunt damping, and Helmholtz resonance. Different multimode shunt design methods are explored to intensify panel vibration and improve sound absorption, with absorption peaks induced by electromechanical coupling found at frequencies lower than the MPP's Helmholtz resonance frequency.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Physics, Applied
Xiuyu Li, Lifeng Ma, Jiajia Hu, Zhiyuan Zhu
Summary: This research proposes a coupled structure with low-frequency sound absorption performance by coupling micro-perforated panel and three second-order maze metamaterial structures. The equivalent circuit method and genetic algorithm are used to optimize the parameters of this sound absorption structure. The theoretical calculations are verified by finite element simulation, showing that the coupled structure has good performance in absorbing medium and low-frequency sound waves.
MODERN PHYSICS LETTERS B
(2023)
Article
Engineering, Mechanical
Xiyue Ma, Daniil Yurchenko, Kean Chen, Lei Wang, Yang Liu, Kai Yang
Summary: This paper investigates the performance of a new type of sound-controlled micro-perforated panel absorber, which achieves wide-band perfect low-frequency sound absorption using a point force controlled backing panel. The theoretical model is established and the influence of structure size and point force position on sound absorption performance is explored. Experimental tests are conducted to validate the findings, and the physical mechanisms of active control are analyzed. A simplified error sensing strategy is also constructed. The results show that locating the point force at the center or using a relatively small sized absorber can achieve perfect sound absorption in a wide controllable bandwidth.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Acoustics
Jingfeng Ning, Qian Geng, M. P. Arunkumar, Yueming Li
Summary: A light composite absorber with a micro-perforated sandwich panel filled with thin porous materials is proposed in this study to achieve a wide absorption bandwidth. The theoretical model derived by the transfer matrix method is in good agreement with experimental results, showing better performance compared to other absorbers. The absorption mechanism and the effects of internal components on absorption performance are analyzed in detail.
Article
Acoustics
Chenhao Dong, Zhao Liu, Robert Pierce, Xiaoling Liu, Xiaosu Yi
Summary: A new micro perforated sandwich panel with honeycomb-hierarchical pore structure core is developed in this study. By combining carbonized cotton with hierarchical pore structure and a micro perforated honeycomb core, the sound-absorbing performance of the structure is enhanced without significant weight increase. Experimental results show that the average sound absorption coefficient of the structure can be improved from 0.220 to 0.558 with pure carbonized cotton filling, and further increased to 0.626 with hierarchical pore structure. Additionally, theoretical and finite element models are established with prediction errors of 16.8% and 8.6% respectively.
Article
Acoustics
Tongtao Zhang, Fengmin Wu, Chungeng Bai, Kexin An, Junjun Wang, Bin Yang, Dong Zhang
Summary: We propose a theoretical design and experimental authentication of an ultrathin sound absorber that consists of a perforated plate and a back cavity with zigzag channels for high-efficiency and broadband absorption of low-frequency sound. The dependency of absorption performance on structural parameters is analyzed, suggesting the possibility of decreasing the resonance noise absorption peak frequency while maintaining compactness. We also propose a hybrid design composed of multiple structures with different parameters and suggest further optimization by adjusting the inclined partitions in the zigzag channel to enhance low-frequency absorption. Experimental results show nearly 100% sound absorption at resonance frequency (< 500 Hz) with an absorber 30 times thinner than the wavelength. This designed sound absorber with deep-subwavelength size, broadband functionality, and easy fabrication has potential applications in noise control engineering.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Engineering, Mechanical
Wei He, Xiangjun Peng, Fengxian Xin, Tian Jian Lu
Summary: This study investigates the superior sound absorption performance of ultralight micro-perforated sandwich panels with double-layer hierarchical honeycomb core. Theoretical model predictions and numerical simulations validate the physical mechanisms underlying sound absorption, with systematic parametric study revealing optimal structural parameters for maximizing sound absorption. Viscous dissipation of air inside micro-perforations and around inlet/outlet regions is shown to dominate sound absorption, while the proposed hierarchical construction offers improved load-bearing capacity and significantly enhanced sound absorption across a wide frequency range compared to panels with regular honeycomb core.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2022)
Article
Construction & Building Technology
Gunawan, Iwan Prasetiyo, Brian Yuliarto, Azma Putra, Irianto
Summary: Woven fabric perforation is beneficial for meeting the microstructure requirement of a micro-perforated panel absorber. The use of minute holes created by woven fabrics allows for the fabrication of high perforation ratio MPP with a diameter of 0.1-0.3 mm. The study discusses the properties of these minute holes and their associated absorption characteristics. Theoretical results and experimental investigations validate the findings, showing that controlling weft yarn density can successfully fabricate minute holes. The woven fabrics can achieve a half-absorption bandwidth of up to 5000 Hz (>3 octaves) with a peak absorption coefficient of over 0.8, and changing hole diameter can affect absorption behavior. The study confirms the applicability of Maa's model for predicting absorption of MPP using woven fabric material.
Article
Acoustics
Jan de Priester, Alessia Aulitto, Ines Lopez Arteaga
Summary: An optimized unit cell design of a micro-slit resonant metamaterial is proposed, aiming to increase the size of the frequency stop-bands and improve the sound absorption at normal incidence. Through numerical and semi-analytical solutions, the unit cell design is optimized using a genetic algorithm. The study shows that larger resonators and slit sizes have different effects on the frequency stop-bands. The optimized design significantly enhances the stop-band sizes and improves the absorption performance.
Article
Multidisciplinary Sciences
Md Moniruzzaman, Mohammad Tariqul Islam, Ismail Hossain, Mohamed S. Soliman, Md Samsuzzaman, Sami H. A. Almalki
Summary: This paper presents a tuned metamaterial (MTM) for multiband microwave applications, featuring negative permittivity, near zero permeability, and refractive index properties. The design offers four resonances in the C, X, and Ku bands with compactness and frequency selectivity. The proposed MTM shows potential for flexible frequency selective applications in wireless communications.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Md Bellal Hossain, Mohammad Rashed Iqbal Faruque, Sikder Sunbeam Islam, Mohammad Tariqul Islam
Summary: This study focuses on modifying the double dumbbell-shaped split-ring resonator (MDD-SRR) based negative permittivity for satellite communications. The proposed MDD-SRR unit cell demonstrates multiple resonances for the transmission coefficient at various frequencies, including the S, X, and Ku band satellite communication frequency bands. The research shows that the metamaterial unit cell exhibits negative permittivity across specific frequency ranges, proving its suitability for satellite communication applications with higher bandwidth and gain.
SCIENTIFIC REPORTS
(2021)
Article
Acoustics
Heming Li, Jinwu Wu, Shanlin Yan, Qibo Mao
Summary: This paper presents the design and development of micro-perforated panel (MPP) absorbers with a variable section partition to solve the broadband sound absorption problem. Three types of MPP absorbers were developed based on the cavity, and their absorption characteristics were investigated and optimized. Experimental results show that the optimized absorbers have superior broadband sound absorption performance compared to conventional MPP absorbers.
Article
Multidisciplinary Sciences
Tayaallen Ramachandran, Mohammad Rashed Iqbal Faruque, Mohammad Tariqul Islam
Summary: This research introduces a multi-layered square-shaped metamaterial structure for reducing electromagnetic absorption in wireless mobile devices. Numerical simulations and simulations verification show that the proposed structure achieves resonance frequencies in multiple bands and exhibits left-handed behavior. The highest SAR reduction is 98.136% and 98.283%.
SCIENTIFIC REPORTS
(2022)
Article
Acoustics
Jiayu Wang, Gareth J. Bennett
Summary: This paper presents an optimised, multi-chamber, micro-perforated panel absorber (MC-MPPA) with micro-perforated adjoining panels. By employing a graph-theory-based method, a model for multi-chamber MPPAs can be developed, allowing the optimisation of different geometric parameters to achieve a broadband frequency response with a shallow cavity. Experimental results show that the MC-MPPA achieves an overall absorption coefficient of 0.83 in the frequency range of 660 Hz to 2 kHz and a depth-to-wavelength ratio of 20, making it a deeply subwavelength absorber.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Engineering, Chemical
Simone Gallas, Iman Sabahi, Lucas Van Belle, Jan Croes, Frank Naets, Wim Desmet
Summary: In the past few decades, there has been a growing trend towards combining lightweight materials with traditional metals. In these cases, traditional joining methods such as bolting and welding need to be re-evaluated, and adhesive bonding can be a viable alternative. This study aims to compare the vibrational response of assemblies when using bolts versus adhesive bonding, particularly in terms of modal frequency, shape, and damping. The results show that in the low to mid-frequency range of 0-250 Hz, replacing bolts with adhesive bonding has minimal impact on mode shapes but can significantly increase modal damping values and frequencies.
JOURNAL OF ADHESION
(2023)
Article
Mathematics, Interdisciplinary Applications
A. Jamnongpipatkul, R. D. B. Sevenois, W. Desmet, F. Naets, F. A. Gilabert
Summary: This paper presents a parametric model order reduction strategy for the micromechanical analysis of composites, especially when the fiber distribution is the parameter of interest. The reduced order model is obtained by applying Galerkin projection in combination with proper orthogonal decomposition. The proposed approach can significantly reduce the computational load and accurately predict the homogenized properties and local stress distributions of the material.
COMPUTATIONAL MECHANICS
(2023)
Article
Engineering, Multidisciplinary
Jelle Bosmans, Matteo Kirchner, Jan Croes, Wim Desmet
Summary: This paper investigates the potential of using strain gauges installed on the gearbox housing as virtual torque sensors to indirectly detect key turbine quantities. The study compares the measured strain response to simulated strain results obtained from a physics-based model. The results suggest that the studied strain gauges are promising for model-based virtual sensing of the torque on the gearbox.
FORSCHUNG IM INGENIEURWESEN-ENGINEERING RESEARCH
(2023)
Article
Engineering, Mechanical
Dandan Peng, Chenyu Liu, Wim Desmet, Konstantinos Gryllias
Summary: This study proposes a deep learning-based anomaly detection method, called deep support vector data description (deep SVDD), for wind turbine monitoring. Compared to the traditional SVDD approach, this method combines a deep convolutional neural network with the SVDD detector to automatically extract effective features. Experimental results show that the method can effectively detect the generation of ice on wind turbine blades with a successful detection rate of 91.45%.
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME
(2023)
Article
Acoustics
Yue Li, Jacques Cuenca, Laurent De Ryck, Mansour Alkmim, Onur Atak, Wim Desmet, Giulio Dolcetti, Anton Krynkin
Summary: This paper proposes a method for characterizing rough surfaces of finite size in terms of their roughness shape and surface impedance using a superposition of spatial sinusoidal components and a porous material model. The method improves computational efficiency by simplifying the target geometry as a thin shell representation. A subtraction method is proposed to mitigate the modeling error, and a discretization criterion is defined to ensure modeling accuracy. The inverse problem is solved by minimizing the difference between the simulated and reference acoustic field.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Engineering, Mechanical
Shuyang Zhang, Hendrik Devriendt, Lucas Van Belle, Wim Desmet
Summary: Adhesive bonding is increasingly important in mechanical systems, and finite element models are commonly used to accurately predict their dynamic behavior. However, these models can be computationally expensive for large systems. This work proposes improvements to the Craig-Bampton method and extends it to parametric model order reduction for viscoelastic substructures with adhesive joints. The proposed approach demonstrates accuracy and reduction in computation time through numerical examples.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Mechanical
Felix Simeon Egner, Luca Sangiuliano, Regis Fabien Boukadia, Sjoerd van Ophem, Wim Desmet, Elke Deckers
Summary: This paper proposes a mesh-free, inherently smoothing, polynomial filtering approach based on stereo camera measurement for structural intensity analysis on curved plates. Numerical studies are conducted to determine the algorithm parameters and their performance for different levels of uncertainty and displacement fields. Experimental validation on flat plate and curved plate cases shows good agreement and qualitative conclusions can be drawn.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Rocco Adduci, Jeroen Willems, Edward Kikken, Joris Gillis, Jan Croes, Wim Desmet
Summary: Due to increasing performance requirements, model-based optimization and control strategies are gaining popularity in the machine building and automotive industries. However, these strategies require more modelling effort and a deeper understanding of optimization techniques, as detailed models are needed to evaluate certain performance characteristics. MATLAB Simscape and similar modelling tools help reduce this effort and allow for more complex and accurate models. However, these tools cannot be used with high-performance gradient-based optimization algorithms due to the complexity of the underlying model equations. This work presents an optimization toolchain that efficiently interfaces with MATLAB Simscape to reduce user effort and computation time required for optimizing high-fidelity drivetrain models.
Article
Acoustics
Stefan Janssen, Lucas Van Belle, Noe Geraldo Rocha de Melo Filho, Wim Desmet, Claus Claeys, Elke Deckers
Summary: Locally resonant vibro-acoustic metamaterials have emerged as a promising lightweight solution with favorable noise and vibration attenuation due to their stop band behavior. However, their insulation performance is often hindered by a strong dip following the peak insulation. This study extends and demonstrates the concept of dip reduction to address this issue in a realizable metamaterial panel while preserving peak insulation performance and total mass addition. A design framework is presented to achieve practically realizable dip-reduced metamaterial panel designs based on lumped parameter and finite-element model optimizations.
Article
Engineering, Mechanical
Jordi Marco Jordan, Bart Blockmans, Wim Desmet
Summary: A comparative assessment of analytical gear mesh stiffness modelling techniques is conducted, leading to an optimized method for spur and helical gear stiffness modelling. By selectively combining different analytical methods from literature, the total stiffness of a spur gear pair is obtained as a series and parallel connection of springs. The model is then extended to analytically compute the contact stiffness of helical gears, including axial stiffness and slice coupling effects, using exponential decay functions and the moment image method. The novel method is numerically validated through comparisons with finite element simulations.
MECHANISM AND MACHINE THEORY
(2023)
Correction
Acoustics
Vanessa Cool, Lucas Van Belle, Claus Claeys, Elke Deckers, Wim Desmet
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME
(2023)
Article
Acoustics
Fabio Di Giusto, Sjoerd van Ophem, Wim Desmet, Elke Deckers
Summary: This paper assesses the impact of photogrammetric error on individual Head-Related Transfer Functions (HRTFs), finding that the high frequency spectral features deviate due to the scanning error. By merging the photogrammetric geometry with laser scan data, the influence of inaccuracies in different pinna structures is evaluated. Correlation analysis between acoustic and geometric metrics identifies the most relevant geometric metrics in relation to the HRTFs.
Proceedings Paper
Engineering, Mechanical
Simone Gallas, Hendrik Devriendt, Jan Croes, Frank Naets, Wim Desmet
Summary: This study aims to experimentally assess the accuracy of simplified finite element models for joints and evaluate how model updating techniques can improve accuracy. Experimental modal analysis and model updating were performed on different joint samples and an industrial case, showing that model updating significantly improves accuracy for flexible adhesives, which may be important to consider during the design process.
NONLINEAR STRUCTURES & SYSTEMS, VOL 1
(2023)
Proceedings Paper
Engineering, Civil
Andre Tavares, Bernardo Lopes, Emilio Di Lorenzo, Bram Cornelis, Bart Peeters, Wim Desmet, Konstantinos Gryllias
Summary: In the wind energy industry, damage detection methodologies are crucial for wind turbines due to the mechanical loads and extreme environmental conditions they experience during operation. Machine Learning techniques can be used to develop accurate and automated Structural Health Monitoring methods, detecting structural defects and extending the lifetime of the structures.
EUROPEAN WORKSHOP ON STRUCTURAL HEALTH MONITORING (EWSHM 2022), VOL 1
(2023)
Article
Engineering, Mechanical
Xuanen Kan, Yanjun Lu, Fan Zhang, Weipeng Hu
Summary: A blade disk system is crucial for the energy conversion efficiency of turbomachinery, but differences between blades can result in localized vibration. This study develops an approximate symplectic method to simulate vibration localization in a mistuned bladed disk system and reveals the influences of initial positive pressure, contact angle, and surface roughness on the strength of vibration localization.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Zimeng Liu, Cheng Chang, Haodong Hu, Hui Ma, Kaigang Yuan, Xin Li, Xiaojian Zhao, Zhike Peng
Summary: Considering the calculation efficiency and accuracy of meshing characteristics of gear pair with tooth root crack fault, a parametric model of cracked spur gear is established by simplifying the crack propagation path. The LTCA method is used to calculate the time-varying meshing stiffness and transmission error, and the results are verified by finite element method. The study also proposes a crack area share index to measure the degree of crack fault and determines the application range of simplified crack propagation path.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Rongjian Sun, Conggan Ma, Nic Zhang, Chuyo Kaku, Yu Zhang, Qirui Hou
Summary: This paper proposes a novel forward calculation method (FCM) for calculating anisotropic material parameters (AMPs) of the motor stator assembly, considering structural discontinuities and composite material properties. The method is based on multi-scale theory and decouples the multi-scale equations to describe the equivalence and equivalence preconditions of AMPs of two scale models. The effectiveness of this method is verified by modal experiments.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Hao Zhang, Jiangcen Ke
Summary: This research introduces an intelligent scheduling system framework to optimize the ship lock schedule of the Three Gorges Hub. By analyzing navigational rules, operational characteristics, and existing problems, a mixed-integer nonlinear programming model is formulated with multiple objectives and constraints, and a hybrid intelligent algorithm is constructed for optimization.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Jingjing He, Xizhong Wu, Xuefei Guan
Summary: A sensitivity and reliability enhanced ultrasonic method has been developed in this study to monitor and predict stress loss in pre-stressed multi-layer structures. The method leverages the potential breathing effect of porous cushion materials in the structures to increase the sensitivity of the signal feature to stress loss. Experimental investigations show that the proposed method offers improved accuracy, reliability, and sensitivity to stress change.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Benyamin Hosseiny, Jalal Amini, Hossein Aghababaei
Summary: This paper presents a method for monitoring sub-second or sub-minute displacements using GBSAR signals, which employs spectral estimation to achieve multi-dimensional target detection. It improves the processing of MIMO radar data and enables high-resolution fast displacement monitoring from GBSAR signals.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Xianze Li, Hao Su, Ling Xiang, Qingtao Yao, Aijun Hu
Summary: This paper proposes a novel method for bearing fault identification, which can accurately identify faults with few samples under complex working conditions. The method is based on a Transformer meta-learning model, and the final result is determined by the weighted voting of multiple models.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Xiaomeng Li, Yi Wang, Guangyao Zhang, Baoping Tang, Yi Qin
Summary: Inspired by chaos fractal theory and slowly varying damage dynamics theory, this paper proposes a new health monitoring indicator for vibration signals of rotating machinery, which can effectively monitor the mechanical condition under both cyclo-stationary and variable operating conditions.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Hao Wang, Songye Zhu
Summary: This paper extends the latching mechanism to vibration control to improve energy dissipation efficiency. An innovative semi-active latched mass damper (LMD) is proposed, and different latching control strategies are tested and evaluated. The latching control can optimize the phase lag between control force and structural response, and provide an innovative solution to improve damper effectiveness and develop adaptive semi-active dampers.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Menghao Ping, Xinyu Jia, Costas Papadimitriou, Xu Han, Chao Jiang, Wang-Ji Yan
Summary: Identification of non-Gaussian processes is a challenging task in engineering problems. This article presents an improved orthogonal series expansion method to convert the identification of non-Gaussian processes into a finite number of non-Gaussian coefficients. The uncertainty of these coefficients is quantified using polynomial chaos expansion. The proposed method is applicable to both stationary and nonstationary non-Gaussian processes and has been validated through simulated data and real-world applications.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Lei Li, Wei Yang, Dongfa Li, Jianxin Han, Wenming Zhang
Summary: The frequency locking phenomenon induced by modal coupling can effectively overcome the dependence of peak frequency on driving strength in nonlinear resonant systems and improve the stability of peak frequency. This study proposes the double frequencies locking phenomenon in a three degrees of freedom (3-DOF) magnetic coupled resonant system driven by piezoelectricity. Experimental and theoretical investigations confirm the occurrence of first frequency locking and the subsequent switching to second frequency locking with the increase of driving force. Furthermore, a mass sensing scheme for double analytes is proposed based on the double frequencies locking phenomenon.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Kai Ma, Jingtao Du, Yang Liu, Ximing Chen
Summary: This study explores the feasibility of using nonlinear energy sinks (NES) as replacements for traditional linear tuned mass dampers (TMD) in practical engineering applications, specifically in diesel engine crankshafts. The results show that NES provides better vibration attenuation for the crankshaft compared to TMD under different operating conditions.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Wentao Xu, Li Cheng, Shuaihao Lei, Lei Yu, Weixuan Jiao
Summary: In this study, a high-precision hydraulic mechanical stand and a vertical mixed-flow pumping station device were used to conduct research on cavitation signals of mixed-flow pumps. By analyzing the water pressure pulsation signal, it was found that the power spectrum density method is more sensitive and capable of extracting characteristics compared to traditional time-frequency domain analysis. This has significant implications for the identification and prevention of cavitation in mixed-flow pump machinery.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Xiaodong Chen, Kang Tai, Huifeng Tan, Zhimin Xie
Summary: This paper addresses the issue of parasitic motion in microgripper jaws and its impact on clamping accuracy, and proposes a symmetrically stressed parallelogram mechanism as a solution. Through mechanical modeling and experimental validation, the effectiveness of this method is demonstrated.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
Article
Engineering, Mechanical
Zhifeng Shi, Gang Zhang, Jing Liu, Xinbin Li, Yajun Xu, Changfeng Yan
Summary: This study provides useful guidance for early bearing fault detection and diagnosis by investigating the effects of crack inclination and propagation direction on the vibration characteristics of bearings.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2024)
