Article
Acoustics
Wael W. Mohammed, Hijaz Ahmad, Hamid Boulares, Fathi Khelifi, Mahmoud El-Morshedy
Summary: This article explores the stochastic Hirota-Maccari system forced by multiplicative noise in the Ito sense, utilizing various methods to derive new stochastic solutions. The benefits of these methods include their applicability to similar models. Additionally, 3D surfaces of the analytical solutions are plotted using MATLAB to demonstrate the impact of multiplicative noise on the exact solution of the Hirota-Maccari method.
JOURNAL OF LOW FREQUENCY NOISE VIBRATION AND ACTIVE CONTROL
(2022)
Article
Acoustics
Ze-Qi Lu, Wen-Hang Liu, Hu Ding, Li-Qun Chen
Summary: This paper explores a parallel-coupled quasi-zero stiffness (QZS) vibration isolator for an axially loaded beam, aiming to enhance the effectiveness of low-frequency isolation. The combination of a spiral spring with positive stiffness and two magnetic rings with negative stiffness is utilized to resolve structural instability. The effectiveness of vibration isolation is measured using frequency response functions (FRFs) of power flow. An energy method is employed to model and analyze the parallel-coupled QZS vibration isolator, and the numerical and analytical results support the high suppression of power reduction at low frequencies.
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME
(2022)
Article
Acoustics
Andong Li, Chengshi Zheng, Lu Zhang, Xiaodong Li
Summary: By proposing a collaborative learning framework for monaural noise suppression in the complex domain, the system achieves state-of-the-art performance through spectral feature extraction modules and stacked glance-gaze modules in experiments.
Article
Acoustics
Xi-Hu Wu, Yi-Tian Gao, Xin Yu, Cui-Cui Ding, Lei Hu, Liu-Qing Li
Summary: In this paper, a nonlocal Lakshmanan-Porsezian-Daniel equation is studied using the binary Darboux transformation method and asymptotic analysis. The nonlocality of the equation is reflected in the dependence of the solutions on both the local and nonlocal solutions at different positions. The formulas for Nth-order solutions are derived using the binary Darboux transformation, and first-order periodic waves and solitons are obtained under certain conditions. The interactions between dark solitons, bright solitons, and periodic waves are discussed, as well as the modulation instability of the equation.
Article
Acoustics
Haoyang Lin, Huadan Zheng, Baiyang Antonio Zhou Montano, Hongpeng Wu, Marilena Giglio, Angelo Sampaolo, Pietro Patimisco, Wenguo Zhu, Yongchun Zhong, Lei Dong, Ruifeng Kan, Jianhui Yu, Vincenzo Spagnolo
Summary: This paper presents an on-beam QEPAS sensor utilizing a custom QTF as a photoacoustic transducer, demonstrating improved sensitivity for H2O and CO2 detection through optimization of AmR geometry and coupling distance. The system performance was further enhanced by adjusting the laser beam focus position.
Article
Acoustics
A. K. Hiett, J. D. Sonek, M. Guy, T. J. Reid
Summary: This study aimed to compare the performance of IOTA Simple Rules, SRR assessment, ADNEX model, and O-RADS in preoperative discrimination between malignant and benign adnexal lesions. The results showed that these models had similar sensitivity, but the IOTA models had higher specificity and did not require the use of magnetic resonance imaging.
ULTRASOUND IN OBSTETRICS & GYNECOLOGY
(2022)
Article
Acoustics
Fabrizio Sgobba, Angelo Sampaolo, Pietro Patimisco, Marilena Giglio, Giansergio Menduni, Ada Cristina Ranieri, Christine Hoelzl, Hubert Rossmadl, Christian Brehm, Verena Mackowiak, Dario Assante, Ezio Ranieri, Vincenzo Spagnolo
Summary: The paper presents a Quartz Enhanced Photoacoustic Spectroscopy (QEPAS) sensor for real-time carbon monoxide monitoring, analyzing CO relaxation processes in ambient air. Outdoor testing in a trafficked urban area provided results comparable to daily averages reported by local air inspection agencies, with spikes correlated to heavy-duty vehicle passages.
Article
Acoustics
Wenjuan Zhang, Panpan Zhao, Jinzhe Li, Xindi Wang, Juncai Hou, Zhanmei Jiang
Summary: In this study, different pretreatment methods including ultrasound, microwave heating, and ultrasound synergized with microwave heating were applied to investigate the influence on structure, physicochemical, and functional characteristic of transglutaminase-induced whey protein isolate (WPI). The results showed that microwave heating had the strongest effect on the structure and functional characteristics of WPI, leading to improved emulsion stability and foaming stability.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Acoustics
Mingming Ge, Chuanyu Sun, Guangjian Zhang, Olivier Coutier-Delgosha, Dixia Fan
Summary: Hydrodynamic cavitation is an intensification technology that shows promise in water treatment and chemical processing. This study investigates the effects of temperature on cavitation flows and identifies optimal reaction conditions for enhancing cavitation treatment intensity. The results demonstrate that cavitation performance is influenced by cavitation number, Reynolds number, and thermodynamic parameter Sigma. Recommendations are provided for working under specific temperature ranges to enhance cavitation process intensification.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Acoustics
Xiaotian Bai, Huaitao Shi, Ke Zhang, Xiaochen Zhang, Yuhou Wu
Summary: This paper studies the sound radiation characteristics of full ceramic ball bearing systems under different working conditions. The results show that the fit clearance significantly affects the sound radiation, and the sound radiation indicators also vary with the change of working conditions.
JOURNAL OF SOUND AND VIBRATION
(2022)
Review
Acoustics
Pierre-Amaury Grumiaux, Srdan Kitic, Laurent Girin, Alexandre Guerin
Summary: This article presents a survey of deep learning methods for single and multiple sound source localization, specifically focusing on indoor environments with reverberation and diffuse noise. The article provides an extensive overview of the literature on neural network-based sound source localization, organized by neural network architecture, input features, output strategy, data types, and model training strategy. Tables summarizing the literature survey are provided for quick reference.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2022)
Article
Acoustics
Claudia Barile, Caterina Casavola, Giovanni Pappalettera, Vimalathithan Paramsamy Kannan
Summary: In this study, CFRP composites adhesively bonded in a Single Lap Shear configuration were tested and analyzed using Acoustic Emission data to characterize damage modes. Selected features based on Laplacian scores were analyzed using k-means clustering algorithm to establish relationships among them, particularly the strong relationship between Amplitude and Frequency Centroid in characterizing damage modes. Comprehensive characterization of damage modes in each loading stage and final failure was achieved using this method.
Article
Acoustics
Bo Yan, Ning Yu, Zhihao Wang, Chuanyu Wu, Sen Wang, Wenming Zhang
Summary: This study presents a lever-type quasi-zero stiffness vibration isolator (L-QZS-VI) to improve vibration isolation performance. The lever ratio, tip mass of the lever, and nonlinear stiffness of the magnetic spring are analyzed for their effects on the performance. Experimental results show that the vibration isolation performance can be greatly improved by adjusting these parameters.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Acoustics
Chu Zhang, Shunda Qiao, Yufei Ma
Summary: A highly sensitive photoacoustic spectroscopy sensor based on retro-reflection-cavity-enhanced differential photoacoustic cell (DPAC) is demonstrated for the first time in this paper. Acetylene was chosen as the analyte and the DPAC was designed to suppress noise and increase signal level. The retro-reflection-cavity, consisting of two right-angle prisms, was utilized to achieve four passes of the incident light. Wavelength modulation and second harmonic demodulation techniques were employed for sensitive trace gas detection. The DPAC showed a 3.55 times improvement in the 2f signal amplitude compared to the system without the retro-reflection-cavity. Allan deviation analysis was conducted to evaluate the long-term stability of the system and the minimum detection limit (MDL) was measured to be 15.81 ppb with an integration time of 100 s.
Review
Acoustics
J. N. Karim, E. Bradburn, N. Roberts, A. T. Papageorghiou
Summary: This study evaluated the diagnostic accuracy of ultrasound at 11-14 weeks' gestation in detecting fetal cardiac abnormalities and factors impacting the detection rate. It found that first-trimester ultrasound can identify over half of fetuses affected by major cardiac pathology. Future screening programs should consider structured anatomical assessment protocols and the introduction of outflow-tract views and color-flow Doppler imaging to improve detection rates of fetal cardiac pathology.
ULTRASOUND IN OBSTETRICS & GYNECOLOGY
(2022)
Article
Acoustics
Lei Zhou, Wangang Zhang, Jingyu Wang, Ruyu Zhang, Jian Zhang
Summary: This study compared the properties of myofibrillar protein stabilized soybean oil-in-water emulsions fabricated by ultrasound-assisted emulsification, high-pressure homogenization, and high-speed homogenization. The results showed that ultrasound-assisted emulsification and high-pressure homogenization were superior methods for emulsification, with ultrasound-assisted emulsification being more efficient. Furthermore, the emulsion fabricated by ultrasound-assisted emulsification had smaller droplet size, higher interfacial protein concentration and protein exposure extent, and better storage stability.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Acoustics
Jie Deng, Oriol Guasch, Laurent Maxit, Nansha Gao
Summary: A new design of acoustic black hole (ABH) plate is proposed in this study, featuring attached resonators tuned to suppress the plate's first eigenmode and dampened to lower remaining low-order eigenfrequencies, providing broadband vibration reduction across the frequency range with the ABH effect.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Acoustics
Kaiqi Wang, Bingxin Li, Chunran Zhao, Shude Yuan, Chengshuo Zhang, Xiaoya Liang, Junfeng Wang, Ying Wu, Yiming He
Summary: This work designed and prepared a novel heterojunction composite NiO/BaTiO3 through a method of photo-deposition and used it in piezocatalytic dye removal for the first time. The results showed that the NiO/BaTiO3 composite exhibited superior efficiency and stability in RhB degradation under ultrasonic wave vibration. The optimized NiO/BaTiO3 sample synthesized under light irradiation for 2 h demonstrated a RhB degradation rate of 2.41 h-1, which was 6.3 times faster than that of pure BaTiO3. By optimizing the piezocatalytic reaction conditions, the degradation rate constant of NiO/BaTiO3 can further reach 4.14 h-1.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Acoustics
Giuseppe Ciaburro, Gino Iannace
Summary: In this study, a new membrane-type acoustic metamaterial was developed using a recycled cork membrane and reusing masses. The results suggest that these structures can be used for the acoustic correction of rooms.
Article
Acoustics
Kai Yang, Weihao Tong, Liquan Lin, Daniil Yurchenko, Junlei Wang
Summary: This paper thoroughly investigates the broadband active vibration isolation of a bistable nonlinear electromagnetic actuator with an elastic boundary and proposes a new feedback control law to significantly reduce vibration transmissibility. The proposed control law is validated for different system parameters, proving over 90% reduction in maximum vibration transmissibility and a significant widening of the effective vibration isolation bandwidth. The study also demonstrates the effectiveness of active vibration isolation for structural variations and initial condition changes.
JOURNAL OF SOUND AND VIBRATION
(2022)
