Showing 21 - 40 results of 1,325 for search 'Frequency detection structure', query time: 0.14s Refine Results
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    Entropy Detection Technique in Frequency Domain for Soil Cavity and Water Content by LI Hao, YU Hong, ZHANG Zhiqiang, ZHANG Guifeng, XU Dingjie

    Published 2024-06-01
    “…Comparing the F-K filtering and entropy detection methods, the results show that the frequency domain entropy test can better realize the focusing of the echo energy, suppress the clutter, discriminate the interference and target, and effectively improve the detection performance of the underground layered discontinuous structure and high water content area.…”
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  3. 23

    Frequency-informed transformer for real-time water pipeline leak detection by Fengnian Liu, Ding Wang, Junya Tang, Lei Wang

    Published 2025-04-01
    “…Abstract Water pipeline leaks pose significant risks to urban infrastructure, leading to water wastage and potential structural damage. Existing leak detection methods often face challenges, such as heavily relying on the manual selection of frequency bands or complex feature extraction, which can be both labour-intensive and less effective. …”
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  4. 24

    Identification of Structural Damage in Bridges Using High-Frequency Vibrational Responses by Ivana Mekjavić

    Published 2015-01-01
    “…The present research aims to develop an effective and applicable structural damage detection method. A damage identification approach using only the changes of measured natural frequencies is presented. …”
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    A Novel Chipless Hybrid RFID Sensor for Metal Crack Detection by Yamini Devidas Kotriwar, Mahmoodul Haq, Yiming Deng

    Published 2025-02-01
    Subjects: “…radio frequency identification…”
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    Sensitivity of Parameter Changes in Structural Damage Detection by C. H. Jenkins, L. Kjerengtroen, H. Oestensen

    Published 1997-01-01
    “…Structural damage detection by nondestructive methods is highly desirable. …”
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    Structural Damage Detection Using Nonlinear Vibrations by M. Carminati, S. Ricci

    Published 2018-01-01
    “…Nonlinear vibrations emerging from damaged structures are suitable indicators for detecting defects. …”
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    Comparison of Damage Detection Methods Depending on FRFs within Specified Frequency Ranges by Yong-Su Kim, Hee-Chang Eun

    Published 2017-01-01
    “…Structural damage can be detected using frequency response function (FRF) measured by an impact and the corresponding responses. …”
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    Blockage detection in pipelines based on linear frequency modulated acoustic reflection method by Haiyuan Yao, Dan Li, Yan Li, Bo Yang, Yang Meng

    Published 2025-10-01
    “…This study proposes a novel acoustic-based structural health monitoring system integrating linear frequency modulated (LFM) signals with adaptive matched filtering, specifically designed for early blockage detection in complex pipeline networks, including those in built environments. …”
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    First Detection of Low-frequency Striae in Interplanetary Type III Radio Bursts by Vratislav Krupar, Eduard P. Kontar, Jan Soucek, Lynn B. Wilson III, Adam Szabo, Oksana Kruparova, Hamish A. S. Reid, Mychajlo Hajos, David Pisa, Ondrej Santolik, Milan Maksimovic, Jolene S. Pickett

    Published 2025-01-01
    “…These low-frequency fine structures, which drift slowly in frequency and exhibit narrow bandwidths, provide a novel diagnostic of plasma processes in the inner heliosphere. …”
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    Structural health detection sensor based on RFID technology by Bo Wang, Yifeng Yuan, Ke Wang, Shengli Cao, Yalun Song, Male Feng

    Published 2025-01-01
    “…The designed structural health monitoring sensor can detect structural strain and damage with millimeter-level resolution through resonant frequency shifts. …”
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    First Detection of the Enigmatic Low Latitude 150‐km Echoes in the UHF Band by Xinan Yue, Junyi Wang, Yonghui Wang, Yihui Cai, Feng Ding, Ning Zhang, Mingyuan Li, Baiqi Ning, Jorge Luis Chau

    Published 2024-10-01
    “…Abstract Through applying a 4‐MHz linear frequency modulation waveform, which has high range resolution and signal intensity, we successfully detected for the first time the ionospheric 150‐km echo enhancement at 430–450 MHz of the Ultra‐High‐Frequency (UHF) band using the newly built Sanya Incoherent Scatter Radar (SYISR). …”
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    Real-Time Structural Damage Assessment Using Artificial Neural Networks and Antiresonant Frequencies by V. Meruane, J. Mahu

    Published 2014-01-01
    “…Once a neural network has been properly trained, it can potentially detect, locate, and quantify structural damage in a short period of time and can therefore be applied for real-time damage assessment. …”
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