Showing 201 - 220 results of 310 for search '"Wave propagation"', query time: 0.05s Refine Results
  1. 201

    Study on Dynamic Mechanical Properties of Full Tailings Cemented Backfilling Impacted by Cement-Sand Ratio by Shan Yang, Zhiyong Zhou, Yifei Zhao, Wei Yang

    Published 2018-01-01
    “…Test results showed that full tailings cemented backfilling had strong reflection and damping effects on elastic wave propagation. At lower strain rates, specimens presented strength hardening, and at higher strain rates, the test specimens presented rapid-softening strength; the strength-hardened specimen reached the peak stress at 40 μs, and the softening specimen reached the peak stress at about 18 μs; with the increase of strain rate, dynamic compressive strength, growth factor of dynamic strength, peak strain, and dynamic-static strain ratio of specimens increased totally. …”
    Get full text
    Article
  2. 202

    Extraction of Least-Dispersive Ultrasonic Guided Wave Mode in Rail Track Based on Floquet-Bloch Theory by Maodan Yuan, Peter W. Tse, Weiming Xuan, Wenjin Xu

    Published 2021-01-01
    “…In this paper, a numerical study on the guided wave propagation was carried out on a standard rail with 56E1 profile. …”
    Get full text
    Article
  3. 203

    Analysis of the Main Factors Influencing the Dominant Frequency of Blast Vibration by Da Liu, Wenbo Lu, Yijia Liu, Ming Chen, Peng Yan, Pengchang Sun

    Published 2019-01-01
    “…In this paper, by analyzing the main influencing factors of the dominant frequency, an attenuation equation of the dominant frequency induced by blasting vibration has been proposed by dimensional analysis combined with the theory of radial spherical wave propagation. The proposed equation is applied to the fitting analysis on the dominant frequency measured in Zhoushan Green Petrochemical Base in China, which has obtained a favorable fitting correlation. …”
    Get full text
    Article
  4. 204

    Innovative soliton solutions for a (2+1)-dimensional generalized KdV equation using two effective approaches by Ibrahim Alraddadi, Faisal Alsharif, Sandeep Malik, Hijaz Ahmad, Taha Radwan, Karim K. Ahmed

    Published 2024-12-01
    “…Thus, in scientific domains such as fluid mechanics, plasma physics, and wave propagation in media ranging from ocean surfaces to optical fibers, our results are crucial to comprehend the principles behind the production and propagation of many complicated phenomena. …”
    Get full text
    Article
  5. 205

    Seismic Sequence Effects on Buried Pipelines Crossing Nonuniform Sites with Ground Settlement by Dynamic Centrifuge Test by Hongtao Zhang, Yufei Zhao, Mingxu Gao

    Published 2022-01-01
    “…Most of the previous research focuses on the permanent ground deformation (PGD) caused by fault or transient ground deformation (TGD) due to seismic wave propagation independently. The mechanical character of buried pipelines crossing nonuniform sites during seismic sequence after ground settlement has not been studied. …”
    Get full text
    Article
  6. 206

    Two-Step Method for Millimeter-Wave Antenna Performance Assessment in 5G Smartphones by Filipa S. S. Fernandes, Christian Rom, António Rodrigues, Simon Svendsen, Ole Jagielski

    Published 2021-01-01
    “…Then, it evaluates the antenna’s influence on the MIMO performance, using a discrete, time-variant geometrical MIMO channel simulator to recreate any mm-Wave propagation scenario. For enhanced accuracy, mmWAESI accounts simultaneously for several communication aspects: antenna type, realistic radiation patterns, mobile phone form factor constraints, phone orientation, and user influence. …”
    Get full text
    Article
  7. 207

    Automatic Measurement Techniques for Compositional Properties of Fresh Concrete: Focus on Water/Cement Ratio and Air Content by Ojala Teemu, Punkki Jouni

    Published 2024-12-01
    “…The research compared microwave absorption (MWA) and time-domain reflectometry (TDR) techniques for w/c ratio measurement as well as acoustic wave propagation (AWP) technique for air content measurement, against the reference testing methods. …”
    Get full text
    Article
  8. 208

    Remote Detection of the Electric Field Change Induced at the Seismic Wave Front from the Start of Fault Rupturing by Yukio Fujinawa, Kozo Takahashi, Yoichi Noda, Hiroshi Iitaka, Shinobu Yazaki

    Published 2011-01-01
    “…The characteristic time of diffusion is almost instantaneous, that is, less than 1 second to travel 100 km, more than ten times faster than ordinary seismic P wave propagation. We suggest that the measured electric field changes are produced by the electrokinetic effect through increased pore water pressure of the seismic pulse. …”
    Get full text
    Article
  9. 209

    Investigation of Cortical Signal Propagation and the Resulting Spatiotemporal Patterns in Memristor-Based Neuronal Network by Ke Ding, Zahra Rostami, Sajad Jafari, Boshra Hatef

    Published 2018-01-01
    “…It is shown that the memristor coupling intensities, by which the system undergoes periodic behavior, prevent the tissue from holding wave propagation. Besides, the chaotic behavior in bifurcation diagram corresponds to turbulent spatiotemporal behavior of the tissue. …”
    Get full text
    Article
  10. 210

    Modelling of High-Velocity Impact on Woven Carbon Fibre-Reinforced Plastic Laminate by Nenad Djordjevic, Rade Vignjevic, Kevin Hughes, Tom De Vuyst

    Published 2025-01-01
    “…This made the constitutive model capable of modelling shock wave propagation within orthotropic materials. Damage is incorporated in the model by using reduction in the principal material stiffness based on the effective stress concept and the hypothesis of strain energy equivalence. …”
    Get full text
    Article
  11. 211

    Modelling the Environmental Effects of Railway Vibrations from Different Types of Rolling Stock: A Numerical Study by Georges Kouroussis, David P. Connolly, Konstantinos Vogiatzis, Olivier Verlinden

    Published 2015-01-01
    “…A two-step approach is used to simulate ground wave propagation which is analysed at various distances from the track. …”
    Get full text
    Article
  12. 212

    Defining quantitative parameters and coordinates of the defect signal by acoustic-emission control of cylindrical tanks by A. A. Kuznetsov, V. P. Kulakovskaya

    Published 2024-02-01
    “…The approach proposed in the article makes it possible to reduce the error of determining the coordinates of defects, as compared to the expressions in the case of rectilinear wave propagation on a flat surface.…”
    Get full text
    Article
  13. 213

    Evaluation of Selected Modulation Techniques in Underwater Multipath Channel by Agnieszka Czapiewska, Andrzej Luksza, Ryszard Studanski, Lukasz Wojewodka, Andrzej Zak

    Published 2025-01-01
    “…However, the channel for Underwater Acoustic (UWA) communications is challenging compared to the radio wave propagation in the air. Especially in shallow waters, where the channel has strong multipath effects. …”
    Get full text
    Article
  14. 214

    Study on Electrical Parameter Matching of Piezoelectric Stack Periodic Strut for Helicopter Cabin Noise Control by Yue Hui-yu, Lu Yang, Dang Chong, Qin Yi-Fan, Ma Jin-chao, Zhu Tian-Yu

    Published 2022-01-01
    “…The propagation of elastic waves in the stopband frequency range is attenuated, which can improve the broadband passive vibration isolation capability of the PSPS; The piezoelectric stacks can adjust the elastic wave propagation in the PSPS and improve the single-frequency or multifrequency active isolation performance of the PSPS. …”
    Get full text
    Article
  15. 215

    Blasting for Fracturing and Improving the Permeability of Deep, Soft, Outburst Prone Coal Seams Using Blasthole and Relief Hole Drilled into the Underlying Stratum: Optimal Hole Di... by Jianyu Zhang, Xingguo Zhao, Shigui Fu, Guodong Qiao, Xin Zhang, Shuai Yang

    Published 2022-01-01
    “…By establishing a theoretical model for this purpose, the stress wave propagation characteristics during the blasting process were analyzed, and the working mechanisms of the relief hole and the stress transmission characteristics were investigated. …”
    Get full text
    Article
  16. 216

    A Comprehensive Propagation Prediction Model Comprising Microfacet Based Scattering and Probability Based Coverage Optimization Algorithm by A. S. M. Zahid Kausar, Ahmed Wasif Reza, Lau Chun Wo, Harikrishnan Ramiah

    Published 2014-01-01
    “…Although ray tracing based propagation prediction models are popular for indoor radio wave propagation characterization, most of them do not provide an integrated approach for achieving the goal of optimum coverage, which is a key part in designing wireless network. …”
    Get full text
    Article
  17. 217

    <italic>C&#x2099;</italic>&#x00B2; Modeling for Free-Space Optical Communications: A Review by Florian Quatresooz, Claude Oestges

    Published 2025-01-01
    “…Atmospheric turbulence influence on optical wave propagation, referred to as optical turbulence, has long been studied for astronomical applications and is now being addressed for free-space optical communication links between ground and satellites. …”
    Get full text
    Article
  18. 218

    Research on Antenna Propagation Loss Model in Rail Transit Tunnel based on Multi-dimensional Scenario Analysis by ZHAO Yifan, ZOU Jinbai, ZHAO Zhenglian, XU Zhipeng, ZHOU Qing

    Published 2025-01-01
    “…To solve the problems such as the complexity of the existing radio wave propagation loss model in tunnels and the challenges for the model′s validation and application, the on-site measurement results of previous researchers are sorted out, and the characteristics of radio wave signal propagation loss radiated by antenna in the scenario of vacant rail transit tunnels are studied. …”
    Get full text
    Article
  19. 219

    Fractional Dynamics: Applications of the Caputo Operator in Solving the Sawada–Kotera and Rosenau–Hyman Equations by Khudhayr A. Rashedi, Musawa Yahya Almusawa, Hassan Almusawa, Tariq S. Alshammari, Adel Almarashi

    Published 2025-01-01
    “…Special attention is given to the influence of the fractional parameter on behavior of the solution behavior, highlighting its role in controlling diffusion and wave propagation. The findings underscore the potential of q-HMTM and MVIM as robust tools for solving non-linear fractional differential equations. …”
    Get full text
    Article
  20. 220

    Assessment of landslide generated impulse waves in dam reservoirs using empirical relations: a case study on Borçka Dam by Hakan Ersoy, Murat Karahan, Hasan Hüseyin Öztürk

    Published 2020-07-01
    “…Considering the 4-meter freeboard for the dam, it was determined that the wave propagating through the reservoir and reaching the dam body would not create a danger for the body. …”
    Get full text
    Article