Detection on Structural Sudden Damage Using Continuous Wavelet Transform and Lipschitz Exponent by Bo Chen, Yuan-pin Kang, Peng-yun Li, Wen-ping Xie

“…The detection on structural sudden damage has been actively carried out in this study. …”
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A multimodal functional structure-based graph neural network for fatigue detection by Dongrui Gao, Zhihong Zhou, Zongyao Peng, Haokai Zhang, Shihong Liu, Manqing Wang, Hongli Chang

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Frequency‐Locked Wireless Multifunctional Surface Acoustic Wave Sensors by Luyu Bo, Jiali Li, Zhide Wang, Chongpeng Qiu, Bowen Cai, Yingshan Du, Teng Li, Hongye Liu, Zhenhua Tian

“…This study presents frequency‐locked wireless multifunctional SAW sensors that enable multiple wireless sensing functions, including strain sensing, temperature measurement, water presence detection, and vibration sensing. …”
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Ground Vibration Analysis of Railroad Dynamic Loads on Rail Structure by Rini Kusumawardani, Mufita Aulia Zelin, Arief Kusbiantoro

“…The railroad structure consists of rail steel, sleepers, fastening, ballast, sub-ballast and subgrade. The load of the passing train at a certain speed can produce vibrations channeled through the train wheels to the railway steel to be forwarded to the sleepers then to the ballast and distributed to the subgrade. The amount of vibration caused by the train can be seen from the value of the acceleration, amplitude and frequency of the vibration. In this study, the accelerometer sensor was used to detect the magnitude of the vibration acceleration. The vibration acceleration data was then processed using Geopsy software to obtain the value of natural frequency and vibration amplitude using the HVSR (Horizontal to Vertical Spectral Ratio) method. The value of acceleration due to railroad vibration of 0.14 g - 0.64 g with a position placed 1.5 m sensor from the edge of the rail. The biggest vibration acceleration is 0.26 g x direction, 0.39 y direction and 0.29 z direction caused by Maharani trains that pass at a speed of 65 km / h and a load of 728 tons. The natural frequency of vibration obtained value 2.4077 Hz - 5.392 Hz. The highest natural frequency was caused when the Maharani train, which was 5.392 Hz. Train speed and load affected the vibration of the rail structure. The acceleration of vibration increased when the train speed and load increased…”
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Cascaded Graphene Frequency Selective Surface Integrated Tunable Broadband Terahertz Metamaterial Absorber by Rishi Mishra, Arpit Sahu, Ravi Panwar

“…The quest of novel materials and structures to design an efficient absorber for realizing wave trapping and absorption at terahertz (THz) frequencies is an open topic. …”
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Acoustical diagnostics of cracks in beam like structures by L. MAJKUT

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Frequency–Spatial–Temporal Domain Fusion Network for Remote Sensing Image Change Captioning by Shiwei Zou, Yingmei Wei, Yuxiang Xie, Xidao Luan

“…Specifically, our Frequency–Spatial Fusion module implements adaptive spectral decomposition to disentangle structural changes from high-frequency noise artifacts, effectively suppressing environmental interference. …”
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Discharge Experiment and Structure Optimisation Simulation of Impulse Sound Source by Xu Gao, Jing Zhou, Haiming Xie, Xiao Du

“…The wave frequency and energy of traditional piezoelectric emission sources used in acoustic logging are limited, which results in an inadequate detection resolution for measuring small-scale geological formations. …”
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Multi-frequency EEG and multi-functional connectivity graph convolutional network based detection method of patients with Alzheimer’s disease by Yujian Liu, Libing An, Haiqiang Yang, Shuzhi Sam Ge

“…This network comprehensively captures abnormalities in brain network structures induced by AD, across different frequency bands and connectivity modes. …”
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FD²-YOLO: A Frequency-Domain Dual-Stream Network Based on YOLO for Crack Detection by Junwen Zhu, Jinbao Sheng, Qian Cai

“…Crack detection in cement infrastructure is imperative to ensure its structural integrity and public safety. …”
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High-efficiency nonlinear frequency conversion enabled by optimizing the ferroelectric domain structure in x-cut LNOI ridge waveguide by Su Yawen, Zhang Xinyu, Chen Haiwei, Li Shifeng, Ma Jianan, Li Wei, Niu Yunfei, Qin Qi, Yang Shaoguang, Deng Yu, Zhang Yong, Hu Xiaopeng, Zhu Shining

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Advanced acoustic inspection of concrete structures using pulsed water jet technology by Saeko TOKUOMI, Kazuya MORI, Yasutaka OHSHIMA

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Microfluidic Microwave Sensor Based on a Twisted Cross-Shaped Structure for Glucose Detection by Yun Ma, Chenxi Zhao, Chaojun Chen, Quanlin Guo, Junxi Zhu, Dezhi Gou, Chuan Liu

“…In this work, a novel microwave sensor based on the twisted cross-shaped structure for glucose detection is designed, applying a microfluidic device for precise temperature control. …”
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Intelligent UAV health monitoring: Detecting propeller and structural faults with MEMS-based vibration by Temel Sonmezocak

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Structural Damage Detection by Power Spectral Density Estimation Using Output-Only Measurement by Eun-Taik Lee, Hee-Chang Eun

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DAMAGE DETECTION IN COMPOSITE CYLINDRICAL PANEL BASED ON FORCED VIBRATION ANALYSIS by Piotr PAJĄK, Marek BARSKI

“…In the first step the natural frequencies of the intact structure are computed with use of the modal analysis. …”
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RDSF-Net: Residual Wavelet Mamba-Based Differential Completion and Spatio-Frequency Extraction Remote Sensing Change Detection Network by Shuo Wang, Dapeng Cheng, Genji Yuan, Jinjiang Li

“…To address these problems, we innovatively propose the residual wavelet mamba-based differential completion and spatio-frequency extraction remote sensing change detection network (RDSF) network. …”
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A Cross-Shaped Slotted Patch Sensor Antenna for Ice and Frost Detection by Rula Alrawashdeh

“…Detection is achieved by measuring variations in the resonant frequency in response to water, ice accumulation, and frost. …”
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Operational Modal Identification of Time-Varying Structures via a Vector Multistage Recursive Approach in Hybrid Time and Frequency Domain by Si-Da Zhou, Li Liu, Wu Yang, Zhi-Sai Ma

“…Real-time estimation of modal parameters of time-varying structures can conduct an obvious contribution to some specific applications in structural dynamic area, such as health monitoring, damage detection, and vibration control; the recursive algorithm of modal parameter estimation supplies one of fundamentals for acquiring modal parameters in real-time. …”
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Numerical and experimental studies for crack detection of a beam-like structure using element stiffness index distribution method by Nguyen Viet Khoa, Quang Van Nguyen, Nguyen Dinh Kien, Cao Van Mai, Dao Thi Bich Thao

“… In this paper, numerical and experimental studies for crack detection of structures using "element stiffness index distribution" are presented. …”
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