Article
Chemistry, Analytical
Xinhu Xu, Liang Zhang, Hulin Guo, Xiaojie Wang, Lingcai Kong
Summary: This study developed an air-coupled transducer using hollow glass microsphere-organosilicon composites as an acoustically matching layer, which demonstrated outstanding acoustic performance. By comparing and analyzing different substrates, the potential application value of organosilicon substrates was determined. The optimized composite material achieved a characteristic acoustic impedance of 1.04 MRayl and an acoustic attenuation of 0.43 dB/mm, displaying exceptional acoustic performance.
Article
Engineering, Multidisciplinary
Dario Vangi, Mara Bruzzi, James Norbert Caron, Michelangelo-Santo Gulino
Summary: Gas-coupled laser acoustic detection (GCLAD) is an unestablished technique for noncontact ultrasound detection based on the interaction of laser and acoustic waves, showing high sensitivity to surface defects on metal plates, especially when perpendicular to the ultrasonic propagation direction in air. It demonstrates a major advantage of instantly inspecting an entire line rather than just a point like traditional transducers.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Chung-Mo Kang, Yong-joo Baek, Ji-Young Jeong, Jongkeun Sim, Eun-Ji Gwak, Tae-Jin Je, Doo-Sun Choi, Gyu Man Kim, Jun Sae Han
Summary: An air-coupled acoustic matching layer, based on a hollow glass microsphere composite, has been developed for air-coupled ultrasonic transducers. The developed composite exhibits excellent air-coupling performance and is suitable for manufacturing high-accuracy air-coupled ultrasonic gas flowmeters.
CERAMICS INTERNATIONAL
(2022)
Article
Acoustics
Elio Di Giulio, Fabio Auriemma, Marialuisa Napolitano, Raffaele Dragonetti
Summary: With the development of additive manufacturing, lattice structures with precisely controlled geometries can be printed to achieve specific acoustic and thermoacoustic characteristics. The study proposes an improved model and new correlations for transport parameters, which are validated and compared through numerical simulations and experiments.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Engineering, Civil
Yunshan Bai, Yuanxue Liu, Guangjian Gao, Shuang Su
Summary: This study extends the traditional source localization method for concrete structures to a non-contact air-coupled MEMS microphones array. By collecting leaky Rayleigh waves, the proposed system allows for monitoring large plate-like concrete structures. Experimental results demonstrate that the system can accurately determine the locating map of AE source, with sufficient accuracy for most field monitoring applications.
SMART STRUCTURES AND SYSTEMS
(2023)
Article
Materials Science, Multidisciplinary
Xin-Rui Li, Da-jian Wu, Yon-Chun Luo, Jie Yao, Xiao Jun Liu
Summary: In this study, a new type of circular hole plate (DCHP) is designed to generate coupled focused acoustic vortices (CFAVs) with pure orbital angular momentums (OAMs) in both air and water. The DCHP provides a convenient method to modulate and focus acoustic vortices, enabling information encoding and decoding for acoustic communication.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Physics, Fluids & Plasmas
A. Caumont, O. Stephan, E. Bossy, B. Dollet, C. Quilliet, P. Marmottant
Summary: Gas bubbles stabilized in toroidal 3D-printed cages exhibit unusual topology and serve as good acoustic resonators. Organizing them in a circular array forms an acoustic tokamak due to its torus shape. Experimentally and theoretically, it is shown that the system has multiple acoustic modes resulting from the acoustic interaction between tori. The fundamental acoustic mode has a significantly lower frequency than that of individual bubbles, and the acoustic field inside the acoustic tokamak is remarkably homogeneous according to our 3D simulations.
Article
Physics, Applied
Garuda Fujii, Masayuki Takahashi, Youhei Akimoto
Summary: This study focuses on developing optimal acoustic cloaks through topology optimization and acoustic-elastic interactions, in order to render objects unobservable to airborne and water-borne sounds. The designed cloaks are expressed as iso-surfaces representing sharp structural boundaries between acoustic and elastic media, ensuring that scatterers remain invisible to sound waves of multiple frequencies from various angles.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Analytical
Helmar Wiltsche, Matthias Wolfgang, Franz Hallwirth
Summary: By adding argon to different gas flows in MICAP, the performance of the plasma can be influenced. Argon can enhance the signal of high excitation energy atom and ion lines, but also constrict the plasma core and decrease the emission intensity. Additionally, the addition of argon does not significantly reduce the structured nitrogen plasma background.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Acoustics
Xiao-Ling Gai, Xi-Wen Guan, Ze-Nong Cai, Xian-Hui Li, Wen-Cheng Hu, Tuo Xing, Fang Wang
Summary: This paper proposes a honeycomb-like sandwich acoustic metamaterial that can effectively control low-frequency noise. By establishing finite element models and analyzing the effects of different parameters, the role of Helmholtz resonators in transmission loss is studied. Experimental results confirm the excellent sound insulation performance of this acoustic metamaterial.
Article
Engineering, Chemical
Lola Farinas, Marina Contreras, Virginia Sanchez-Jimenez, Jose Benedito, Jose Garcia-Perez
Summary: This study investigates the feasibility of using air-coupled ultrasound to characterize the textural properties of pork burger patties. Results show a correlation between ultrasonic velocity and attenuation with fat content, as well as the accurate prediction of burger thickness using airborne ultrasound.
JOURNAL OF FOOD ENGINEERING
(2021)
Article
Food Science & Technology
Clara Talens, Laura Garcia-Fontanals, Paula Fabregat, Monica Ibarguen
Summary: Hidden hunger affects more than 2 billion people globally, especially during adolescence, when there is high nutritional risk due to erratic diets and increased consumption of snacks. This study successfully designed micronutrient-dense biscuits using chickpea and rice flours, meeting the nutritional requirements and sensory expectations of adolescents. The biscuits with higher proportions of chickpea flour had increased mineral content and enhanced sensory qualities, such as grittiness and crunchiness.
Article
Polymer Science
Alhayat Getu Temesgen, Recep Eren
Summary: Natural fibers are being used as an alternative to synthetic fibers in sound absorbing materials. This study focuses on the development of enset nano fiber sound absorbing material prepared through enzyme treatment and mechanical hammering. The results show that the enset nanofibers have improved sound absorption properties compared to the original fabric.
Article
Acoustics
K. Swarnalatha, Sattik Basu, Sarma L. Rani
Summary: This study investigates the nonlinear evolution of acoustic modes in a 1-D duct with inhomogeneous mean velocity and thermodynamic properties. The Krylov-Bogoliubov method of averaging (KBMA) and the method of multiple scales (MMS) are developed to solve the modal-amplitude equations. The solutions are validated using numerical solutions and show good agreement. The effects of the order of nonlinear terms and linear coupling of the modal-amplitude equations are also explored.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Materials Science, Paper & Wood
Jian Hu, Peng Wang, Jieyu Xue, Ruonan Han, Tengzhou Xu, Yan Hong, Yong Yang
Summary: This experimental work aimed to characterize new hybrid fiber wet-laid felts (HFWFs) consisting of wood pulp fibers, glass fibers, and hot-meltable fibers. The effect of different fiber ratios on the mechanical-physical properties of HFWFs was investigated. The results showed that hybrid ratios significantly affected the properties, with HFWFs of 1:0:1 (WPF:GF:HMF) exhibiting the best mechanical properties due to increased interfacial adhesion. Moreover, the weight ratios influenced air permeability and resulted in different acoustic properties, with HFWFs of 1:1:2 and 2:3:1 showing good SAC and excellent STL, respectively. It was also found that higher tensile strength of HFWFs corresponded to higher acoustic resonance frequency.
Article
Acoustics
O. Akanji, Jia Yang, David Hutchins, Peter J. Thomas, Lee A. J. Davis, Sevan Harput, Steven Freear, Pierre N. Gelat, Nader Saffari
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2016)
Article
Materials Science, Characterization & Testing
Ikhsan Mohamed, David Hutchins, Lee Davis, Stefano Laureti, Marco Ricci
NONDESTRUCTIVE TESTING AND EVALUATION
(2017)
Article
Acoustics
D. A. Hutchins, J. Yang, O. Akanji, P. J. Thomas, L. A. J. Davis, S. Freear, S. Harput, N. Saffari, P. Gelat
Article
Nanoscience & Nanotechnology
S. Laureti, D. A. Hutchins, L. A. J. Davis, S. J. Leigh, M. Ricci
Article
Acoustics
P. G. Gelat, J. Yang, O. Akanji, P. J. Thomas, D. Hutchins, S. Harput, S. Freear, N. Saffari
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2017)
Article
Materials Science, Characterization & Testing
Giuseppe Silipigni, Pietro Burrascano, David A. Hutchins, Stefano Laureti, Roberto Petrucci, Luca Senni, Luigi Torre, Marco Ricci
NDT & E INTERNATIONAL
(2017)
Article
Physics, Applied
Sevan Harput, James McLaughlan, David M. J. Cowell, Pierre Gelat, Nader Saffari, Jia Yang, Omololu Akanji, Peter J. Thomas, David A. Hutchins, Steven Freear
PHYSICAL REVIEW APPLIED
(2017)
Article
Chemistry, Analytical
Stefano Laureti, Muhammad Khalid Rizwan, Hamed Malekmohammadi, Pietro Burrascano, Maurizio Natali, Luigi Torre, Marco Rallini, Ivan Puri, David Hutchins, Marco Ricci
Article
Chemistry, Analytical
David A. Hutchins, Richard L. Watson, Lee A. J. Davis, Lolu Akanji, Duncan R. Billson, Pietro Burrascano, Stefano Laureti, Marco Ricci
Article
Chemistry, Analytical
Akram Zitoun, Steven Dixon, Graham Edwards, David Hutchins
Article
Chemistry, Analytical
Akram Zitoun, Steven Dixon, Mihalis Kazilas, David Hutchins
Summary: This study investigates the vibrational ultrasonic response of a thin magnetostrictive patch bonded to a glass plate, and demonstrates that the vibration of the patch can be controlled and enhanced by optimizing the magnetic fields.
Article
Chemistry, Analytical
Stefano Laureti, Marco Mercuri, David A. A. Hutchins, Felice Crupi, Marco Ricci
Summary: This study proposes a modified FMCW-based scheme that improves performance below 50 mm through a time-shift of the reference signal. Numerical and experimental evaluations show a significant enhancement in performance compared to the standard FMCW and close similarity to the correlation approach. This work paves the way for the future use of FMCWs in applications requiring high precision.
Article
Chemistry, Analytical
Akram Zitoun, Steven Dixon, Mihalis Kazilas, David Hutchins
Summary: The study investigates the use of thin magnetostrictive patches for defect detection using guided waves in composite samples. The SH0 shear horizontal guided waves were generated in CFRP and GFRP plates using a magnetostrictive patch transducer. Images of defects were reconstructed using the synthetic aperture focusing technique (SAFT) based on multiple transmission and detection locations. The results for imaging defects in both CFRP and GFRP materials are presented.
Proceedings Paper
Physics, Applied
Xiaokang Yin, Zhen Li, An Yan, Wei Li, Guoming Chen, David. A. Hutchins
42ND ANNUAL REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: INCORPORATING THE 6TH EUROPEAN-AMERICAN WORKSHOP ON RELIABILITY OF NDE
(2016)
Proceedings Paper
Acoustics
P. Gelat, J. Yang, P. J. Thomas, D. A. Hutchins, O. Akanji, L. A. J. Davis, S. Freear, S. Harput, N. Saffari
14TH ANGLO-FRENCH PHYSICAL ACOUSTICS CONFERENCE (AFPAC2015)
(2016)
Article
Acoustics
Maxwell J. Kiernan, Rashid Al Mukaddim, Carol C. Mitchell, Jenna Maybock, Stephanie M. Wilbrand, Robert J. Dempsey, Tomy Varghese
Summary: In this study, a method for automatically determining bounding boxes and lumen segmentation using a Mask R-CNN network trained on sonographer assisted groundtruth carotid lumen segmentations is presented. This method is of great importance for analyzing ultrasound images that require time and labor, and it also lays the foundation for developing accurate plaque segmentation and wall thickness measurement methods.
Article
Acoustics
Junzhen Wang, Jianmin Qu
Summary: This article presents the solution to guided wave fields in a double-layer plate and proposes a nonlinear spring-interface model for the bonding between the two sublayers. The study finds that the nonlinearity of the spring-interface can generate resonant guided waves in the double-layer plate, providing a theoretical foundation for the development of nondestructive evaluation techniques using nonlinear guided waves.
Article
Acoustics
Shuyuan Ye, Tianyu Peng, Zhili Long, Zhiming Jiang, Xiangqing Li, Zhonghua Cao
Summary: In this study, a novel approach based on beating vibration model is proposed for frequency tracking, which accurately determines the resonant frequency of the transducer in a short time.
Article
Acoustics
Shuling Gao, Rui Zhang, Zheng Fan, Ning Li, Yanan Yue, Lili Xie
Summary: In this study, a novel method is proposed to monitor fatigue damage in welded joints by computing the energy density in the diffuse ultrasonic signal. The results indicate that the correlation coefficient of the energy density exhibits a significant decreasing trend when crack initiation occurs, providing a unique signal to indicate crack initiation in welded joints.
Article
Acoustics
Ata Jafarzadeh, Peter D. Folkow, Anders Bostrom
Summary: This study investigates the scattering of elastic waves by an anisotropic sphere with orthorhombic symmetry inside an isotropic medium, and applies it to the characterization of polycrystalline materials with anisotropic grains. The expansion coefficients of the wave and displacement field are determined inside the sphere using recursion relations and boundary conditions. The T matrix elements are then obtained and used to analyze the attenuation and phase velocity of polycrystalline materials, particularly at low frequencies. The proposed approach shows good agreement with previous results and finite element method for strongly anisotropic materials.
Article
Acoustics
F. R. Akhmedzhanov, M. I. Elboeva, S. Z. Mirzaev
Summary: The dependence of elastic and acousto-optic properties on the direction of wave vector and polarization of acoustic and optical waves in lead molybdate crystals has been investigated. Effective photoelastic constants were determined using the Dixon method for different geometries of Bragg light diffraction. The study of the acousto-optic quality factor dependence on the direction of the wave vector of longitudinal acoustic waves in the symmetry plane revealed that the maximum and minimum values are observed when light is diffracted by pure longitudinal waves in this plane. Additionally, it was found that the acousto-optic quality factor in lead molybdate crystals is practically the same as in paratellurite crystals.
Article
Acoustics
H. Franklin
Summary: This paper investigates the interaction between double porosity distributed cylindrical bodies and the surrounding fluid using a generalized self consistent method. The study reveals that there is a correlation between the propagating waves and the effective quantities at low frequencies, which is influenced by the volume fraction of scatterers and the porosity.
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
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
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
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
Zubeir M. Ebrahim Saib, Anthony J. Croxford, Bruce W. Drinkwater
Summary: This paper proposes a numerical model using FDTD scheme to solve the nonlinear elastic bulk wave equations, aiming to better understand nonlinear ultrasonic techniques. The model considers material and geometrical nonlinearities and uses a stress-type boundary condition for excitation. Simulation and experimental results validate the effectiveness of the model.
Article
Acoustics
Sol R. Martinez, Emmanuel Odella, Luis E. Ibarra, Arianna Sosa Lochedino, Ana B. Wendel, Andres M. Durantini, Carlos A. Chesta, Rodrigo E. Palacios
Summary: Sonodynamic inactivation (SDI) has an advantage over optical excitation-based protocols due to the deeper penetration of ultrasound (US) excitation. In this study, we applied conjugated polymer nanoparticles (CPNs) as an efficient sonosensitizer (SS) in SDI of pathogens and characterized the sonoreactor. We found that CPNs have a germicidal effect on planktonic cultures and mature biofilms, highlighting their potential for novel inactivation protocols.
Article
Acoustics
Quentin Baudis, Tony Valier-Brasier, Regis Wunenburger
Summary: In this study, we present a detailed procedure for measuring the rheological properties of soft, highly attenuating, visco-elastic materials at ultrasonic frequencies. We use a crosslinked Polyurethane (PU) elastomer as an example and determine its complex longitudinal modulus M and shear modulus G as a function of frequency and temperature. The results show that M, G, and bulk modulus K obey the time-temperature superposition principle and can be accurately described using a fractional derivative rheological model.
Article
Acoustics
Richard E. Jacob, Matthew S. Prowant, Chris A. Hutchinson
Summary: Ultrasonic inspection of cast austenitic stainless steel (CASS) in the nuclear industry is challenging due to sound field scatter and attenuation caused by the coarse-grained microstructure. Modeling and simulation are important tools for addressing key aspects of inspections, but developing a useful and reliable CASS model is challenging. This study demonstrates a method of creating a realistic CASS model and compares it with laboratory-measured sound fields, showing promising results.
