Article
Acoustics
Shrutika Sharma, Vishal Gupta, Deepa Mudgal
Summary: Poly Lactic Acid (PLA) based bone plates fabricated using Fused Deposition Modeling can have improved mechanical strength by biocompatible polydopamine (PDM) coating. The effect of ultrasonic assisted coating parameters on tensile strength of coated bone plates was investigated and compared using Response Surface Methodology (RSM) and machine learning (ML) models. The gradient boosting regression (GBReg) model outperformed other models in terms of accuracy and prediction performance for predicting the tensile strength of PDM coated bone plates.
Article
Acoustics
Brennan Dubuc
Summary: This paper investigates the effect of a finite-sized crack surface on acoustic emission generated at the crack tip in a thin metallic plate using a 3D time-domain finite element model. The study focuses on the directivity effects on the first arrivals and interprets the acoustic emission in terms of a guided mode decomposition. The results show an increase in radiation behind the crack tip for both symmetric and shear horizontal guided modes, regardless of the crack length. The surface wave traveling along the crack length appears to be one of the main factors behind this increase.
Article
Acoustics
Yuchen Liu, Mahshid Hafezi, Andrew Feeney
Summary: This study investigates the use of Nitinol, a shape memory alloy, in a Langevin power ultrasonic transducer to mitigate the influence of temperature on device performance. The results demonstrate that by controlling the microstructure of Nitinol, the nonlinear softening of the piezoelectric stack can be reduced, leading to higher and more stable vibration amplitudes. Furthermore, the use of Nitinol allows for stable resonance frequency and performance even with temperature changes and continuous operation.
Article
Acoustics
Dingpeng Wang, Xiaocen Wang, Shili Chen, Jian Li, Lin Liang, Yang Liu
Summary: This paper proposes an end-to-end ultrasonic guided wave joint learning imaging method for sparse and limited-view transducer arrays, which significantly improves the quality of imaging results by integrating sparse feature reconstruction and deep learning imaging methods.
Article
Acoustics
Kirill Kolesnik, Vijay Rajagopal, David J. Collins
Summary: Superstrate-based acoustofluidic devices offer advantages of cost, interchangeability and prevention of contamination between samples. This study analyzes the coupling layers and superstrate dimensions for efficient sound transmission, finding that a superstrate thickness of 0.55 times the acoustic wavelength maximizes acoustic coupling.
Article
Acoustics
Jasper Vastiau, Cedric Van Hoorickx, Edwin P. B. Reynders
Summary: An efficient and accurate framework for predicting the direct impact sound insulation of layered floors is proposed in this work. The transfer matrix method and the modal version of the method are used to evaluate the radiated sound power. The method is validated through numerical verification using detailed finite element models and extensive laboratory measurements, and it demonstrates good accuracy.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Surkay D. Akbarov, Emin T. Bagirov
Summary: The paper investigates the dispersion of axisymmetric waves in a cylinder with inhomogeneous initial stresses caused by the hydrostatic pressure of the compressible inviscid fluid in which this cylinder is immersed. The corresponding eigenvalue problem for the dispersion of axisymmetric waves propagating in the hydro-elastic system is solved numerically, and the dispersion curves are obtained and discussed for different values of the external pressure. The study reveals the presence of zero group velocity (ZGV) points on the dispersion curves, which are caused by the inhomogeneous initial stresses in the cylinder and the contact of the cylinder with the fluid.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Greco Moraga, Xiang Xia, Sergi Roig, Carme Valero, David Valentin, Monica Egusquiza, Lingjiu Zhou, Eduard Egusquiza, Alexandre Presas
Summary: This article investigates the influence of vibration amplitude on the fluid damping ratio of a submerged disk when it is close to a rigid wall. Experimental results show that the damping ratio increases with the vibration amplitude, especially when the disk is at a small distance from the rigid surface.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Meng-Yuan Hao, Hu Ding, Xiao-Ye Mao, Li-Qun Chen
Summary: This paper compares the characteristics of principal parametric resonance and combination resonance under parametric excitation for the first time. A dynamic model and equation are established, and numerical verification and analysis show that combination resonance may be more destructive than principal parametric resonance. Certain parameters can also affect the stability of the pipe.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Xiang Shi, Qingyang Yu, Zhiwei Wu, Jin-Yang Li, Songye Zhu
Summary: This study aims to develop an innovative self-powered active suspension using a dual-function active electromagnetic damper (DF-AEMD). The DF-AEMD is capable of providing force tracking and energy harvesting functions simultaneously, achieving better performance than traditional semi-active dampers in terms of force tracking accuracy and energy harvesting efficiency.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Asvath Ravichandran, Andreas Logdesser, Nikolaus Peller, Michael Manhart
Summary: In order to better understand the noise generation mechanism of air outlets in car HVAC systems, investigations were conducted in a generic geometry representing a typical air outlet. A hybrid aeroacoustic simulation, backed by an experiment, studied the interaction between a throttle valve and fins. Several sound generation mechanisms were identified, with the Parker-beta mode being the most prominent. Both the experimental and simulation results showed a whistling noise at specific gap lengths, indicating efficient excitation of the Parker-beta mode by vortex shedding.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Shuguang Yang, Dongmei Huang, Lvfeng Yang, Beiyuan Zheng, Zhaokun Zhu, Ming Zou
Summary: The objective of this paper was to investigate the response of a 2-DOF suspender under the condition of vortex-induced force and reveal the mechanism of multimodal coupling. Experimental and numerical methods were used to obtain various response characteristics, such as period doubling bifurcation, quasi-periodic vibration, crises and transient chaotic phenomena. It was found that the system energy transfers between low-order and high-order modal responses. The results have theoretical research value in understanding the coupling effects on suspender response.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
E. Shahabpoor, A. Pavic
Summary: This study presents a two-degree-of-freedom model to simulate the dynamic interaction between a walking human body and a vibrating structure, and identifies the model parameters through simulation and experimental data matching. The findings demonstrate that the model can accurately estimate the dynamics of a walking human for different structures and different modes of a structure.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Luu Xuan Le, Hiroshi Katsuchi, Shinichi Kawai
Summary: This paper presents the development of a universal damping curve for cables of cable-stayed bridges with dampers and a full-scale measurement of cable damping. The proposed damping curve is verified using numerical methods and shows good agreement with other damping formulations. The effectiveness of different damper types is also compared.
JOURNAL OF SOUND AND VIBRATION
(2024)
Article
Acoustics
Yang Yang, Yongxin Yang, Zhigang Chu
Summary: This paper introduces a grid-free compressive beamforming method compatible with arbitrary linear microphone arrays, and demonstrates the correctness and superiority of the proposed method through examples. Monte Carlo simulations are performed to reveal the effects of source coherence, source separation, noise, and number of snapshots.
Article
Acoustics
Hong Xu, Zhengyao He, Qiang Shi, Yushi Wang, Bo Zhang
Summary: This paper presents the development of a directional segmented ring transmitting transducer that can radiate sound waves in any horizontal region. The study focuses on the structure of the segmented ring transducer, its radiation sound field characteristics, and the beam pattern control method based on modal synthesis. The authors propose orthogonal beam pattern functions for adjusting steering angles and establish a three-dimensional finite element model to simulate the transmitting beam patterns. Experimental measurements and tests validate the effectiveness of the proposed transducer, showcasing its ability to steer the beam patterns to different directions.
Article
Acoustics
Faeez Masurkar, Saurabh Aggarwal, Zi Wen Tham, Lei Zhang, Feng Yang, Fangsen Cui
Summary: This research focuses on estimating the elastic constants of orthotropic laminates using ultrasonic guided waves and inverse machine learning models. The results show that this approach has the potential to accurately predict the elastic constants of a material and reduce computational time.
Article
Acoustics
Jirui Yang, Shefeng Yan, Di Zeng, Gang Tan
Summary: This paper proposes an improved domain adaptation framework, self-supervised learning minimax entropy, to enhance the recognition performance of underwater target recognition models. The experimental results demonstrate that applying domain adaptation methods can effectively improve the recognition accuracy of the models under various marine conditions.
Article
Acoustics
Zonghan Sun, Jie Tian, Yuhang Zheng, Xiaocheng Zhu, Zhaohui Du, Hua Ouyang
Summary: This paper analyzes the noise reduction method of installing a sinusoidal-shaped inlet duct on a cooling fan through theoretical and experimental analysis of the acoustic mode modulation. The study establishes the correlation between the free field noise and acoustic mode of the fan rotor and the unsteady forces on the rotor blade surface. The results show that the sinusoidal-shaped inlet duct achieves greater noise reduction compared to a straight duct, especially at the blade passing frequency and its first harmonic.
Article
Acoustics
Xiaoyan Zhu, Tin Oberman, Francesco Aletta
Summary: This paper explores the definition of acoustical heritage and proposes a multidimensional definition based on interviews with experts and detailed analysis of the data.
