Article
Acoustics
Aurelio Bellotti, Jin-Yeon Kim, Joseph E. Bishop, Bradley H. Jared, Kyle Johnson, Donald Susan, Philip J. Noell, Laurence J. Jacobs
Summary: This study uses nonlinear ultrasonic techniques to track microstructural changes in additively manufactured metals, finding that the acoustic nonlinearity parameter beta is highly sensitive to dislocations and has a good correlation with hardness in these metals.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Geosciences, Multidisciplinary
Maria Del Pilar Di Martino, Luca De Siena, Nicola Tisato
Summary: By simulating the propagation of shear waves in computational models representing volcanic rocks, this study investigates the impact of pore space parameters on wave amplitudes and phases. The results show that the size, shape, volume, and location of pores affect waveform characteristics, particularly after multiple scattering.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Optics
Maroun Bsaibes, Yves Quiquempois, Marianne Bigot, Helene Maerten, Pierre Sillard, Maxime Droques, Masaaki Hirano, Laurent Bigot
Summary: In this study, a simple method based on optical time-domain reflectometry was used to compare the Rayleigh scattering coefficient of different modes of few-mode fibers. The method was first validated using single-mode fibers and then applied to weakly-coupled few-mode fibers with different refractive index profiles. The results were compared with those obtained from more sophisticated experiments analyzing the angular distribution of light scattering.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
He Xingliang, Chen Ping
Summary: A novel method for evaluating the axial stress of bolted connections based on the scattering attenuation of polycrystal using the energy ratio of multiple echoes is proposed in this paper. The results of a stress measurement experiment show that the proposed method achieves better sensitivity and reliability in bolt stress detection compared to existing methods.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Homin Song, Ukyong Woo, Hajin Choi
Summary: This study presents a method for estimating the number density of fine dust particles through numerical simulations of multiply scattered ultrasonic wavefields, demonstrating an average error of 43.4% in certain frequency bands. Various factors affecting the accuracy of number density estimation are identified, showing the potential and limitations of the proposed approach.
APPLIED SCIENCES-BASEL
(2021)
Article
Instruments & Instrumentation
Yongxiang Chen, Jiaqi Li, Zinan Wang, Andrei Stancalie, Daniel Ighigeanu, Daniel Negut, Dan Sporea, Gangding Peng
Summary: The experimental investigation explored the effects of gamma ray and electron beam radiation on Rayleigh scattering coefficient in single-mode fiber. Results showed that under the given radiation conditions, Rayleigh scattering coefficients changed very little, while radiation-induced attenuations (RIA) changed significantly. Simulation was also implemented to verify the measured Rayleigh scattering coefficient, including the splicing points.
Article
Chemistry, Multidisciplinary
Ukyong Woo, Hajin Choi, Homin Song
Summary: In this study, multiple scattering theory was experimentally evaluated for measuring ultrasonic attenuation. A unique signal processing approach was developed to successfully calculate the scattering attenuation and the characteristics of fine dust were discussed in relation to the scattering cross-section.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Geological
Rupeng Ma, Jing Ba, Maxim Lebedev, Boris Gurevich, Yongyang Sun
Summary: S-wave attenuation in porous media is influenced by the presence and properties of saturating fluids. This study measured the ultrasonic S-wave velocities and attenuation of three types of tight rocks under partial fluid saturation conditions, finding that different types of rocks exhibit varying attenuation characteristics at different fluid saturation levels.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2021)
Article
Chemistry, Physical
Grzegorz Szamel, Elijah Flenner
Summary: In this study, we analyze sound attenuation starting directly from the microscopic equations of motion and derive an exact expression for the zero-temperature sound damping coefficient. We verify that the sound damping coefficients calculated from our expression agree very well with results from independent simulations of sound attenuation. Small wavevector analysis shows that sound attenuation is primarily determined by the non-affine displacements' contribution to the sound wave propagation coefficient coming from the frequency shell of the sound wave.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Maroun Bsaibes, Yves Quiquempois, Stephane Plus, Adrien Masselot, Guillaume Labroille, Marianne Bigot, Jean-Baptiste Trinel, Pierre Sillard, Laurent Bigot
Summary: This study quantifies the contributions of light scattering and extra-loss mechanisms to total losses and differential mode attenuation for three different few-mode fibers. The results show that a trapezoidal index profile is a good compromise for reducing attenuation and differential mode attenuation while maintaining large effective index differences between modes to minimize mode coupling.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Runze Zhu, Yunfei Liu, Navya Bojja, Zhaoye Qin, Fulei Chu
Summary: This study proposes a unified modeling approach for rotating thin disks with ABH indentations. Finite element analysis is conducted to validate the proposed model. It is found that ABHs are capable of realizing vibration reduction for rotating structures, where the effectiveness is influenced by rotating speeds and excitation types.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Geochemistry & Geophysics
Junxin Guo, Boris Gurevich, Xiaofei Chen
Summary: In this study, we analyze the dynamic SV-wave signatures of fluid-saturated porous rocks containing intersecting fractures. We found that the dispersion and attenuation of SV-waves have similar dependence on properties of intersecting fractures and fluid as those of P-waves, but the influence of FB-WIFF is smaller for SV-waves. In addition, WIFF and elastic scattering greatly affect the anisotropy properties of both SV- and P- waves, which are sensitive to fracture intersection angles and differ between the two types of waves. The complementary features of SV- and P- waves provide a basis for fracture intersection detection.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Acoustics
Kangpei Meng, Q. M. Li
Summary: This paper develops an averaging technique based on the eigenfunction expansion method and collaboration method to investigate the multiple scattering effect of SH wave propagation in a porous medium. The semi-analytical averaging technique conducted using the Monto Carlo method is used to understand the macroscopic dispersion and attenuation phenomena of stress wave propagation in porous solids due to multiple scattering effects. The proposed simple homogenized elastic model with structural damping describes the macroscopic attenuation effect of SH waves in a porous medium.
JOURNAL OF SOUND AND VIBRATION
(2021)
Review
Chemistry, Multidisciplinary
Matthias Ermer, Rebecca Reber, Hasan Baser, Marcus Fischer, Wilhelm Schwieger, Martin Hartmann
Summary: The investigation of the underlying mechanisms for the crystallization of MOFs and zeolites has gained increasing interest, with improvements in in situ diagnostic equipment. Ultrasonic monitoring, though overlooked compared to classical techniques, has provided important insights, particularly for zeolites. However, its use for MOFs is limited. This perspective provides an overview of in situ monitoring of crystallization and highlights the work done using ultrasonic monitoring for zeolites and MOFs, along with the benefits and challenges of establishing it as a tool for investigating crystallization processes.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Kanji Ono
Summary: The ultrasonic attenuation coefficients of ceramic and inorganic materials were determined, and a standardized method for ceramic attenuation measurements was found to be inconsistent. The frequency dependence of attenuation exhibited four types, with linear and linear plus f(4) being the most often observed. The study identified a wide range of attenuation behaviors and discussed the potential applications for characterizing intergranular boundaries in combination with imaging studies.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Kanji Ono, Takahiro Hayashi, Hideo Cho
APPLIED SCIENCES-BASEL
(2017)
Review
Chemistry, Multidisciplinary
Kanji Ono
APPLIED SCIENCES-BASEL
(2018)
Article
Chemistry, Analytical
Kanji Ono
Article
Materials Science, Multidisciplinary
Kanji Ono
Review
Chemistry, Multidisciplinary
Kanji Ono
APPLIED SCIENCES-BASEL
(2019)
Article
Chemistry, Analytical
Kanji Ono
Editorial Material
Chemistry, Multidisciplinary
Kanji Ono
APPLIED SCIENCES-BASEL
(2019)
Review
Chemistry, Multidisciplinary
Kanji Ono
APPLIED SCIENCES-BASEL
(2020)
Article
Chemistry, Analytical
Kanji Ono, Hideo Cho, Hartmut Vallen, Robert T. M'Closkey
Summary: This study focuses on quantifying the transmission and receiving sensitivities of ultrasonic transducers and acoustic emission sensors, extending detection range to lower frequencies, exploring area and multiple sensing methods, and examining transducer loading effects. Results confirm that interfacial wave transmission follows wave propagation theory and that acoustic emission sensors' receiving sensitivity peaks at antiresonance.
Article
Chemistry, Multidisciplinary
Kanji Ono
Summary: This study determined the attenuation coefficients of Lamb waves for ten engineering materials and compared them with calculated values. The Disperse program and a parametric method were used for calculations. The results showed good agreement between the experimental and theoretical values, confirming the predictive capability of the Disperse program. Further refinements in experimental methods are needed to reduce deviations.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Kanji Ono
Summary: The ultrasonic attenuation coefficients of ceramic and inorganic materials were determined, and a standardized method for ceramic attenuation measurements was found to be inconsistent. The frequency dependence of attenuation exhibited four types, with linear and linear plus f(4) being the most often observed. The study identified a wide range of attenuation behaviors and discussed the potential applications for characterizing intergranular boundaries in combination with imaging studies.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
Kanji Ono
