|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Comparative Analysis of Wavelet Transform for Time-Frequency Analysis and Transient Localization in Structural Health Monitoring显示文摘A critical problem facing data collection in structural health monitoring,for instance via sensor networks,is how to extract the main components and useful features for damage detection.A structural dynamic measurement is more often a complex time-varying process and therefore,is prone to dynamic changes in time-frequency contents.To extract the signal components and capture the useful features associated with damage from such nonstationary signals,a technique that combines the time and frequency analysis and shows the signal evolution in both time and frequency is required.Wavelet analyses have proven to be a viable and effective tool in this regard.Wavelet transform(WT)can analyze different signal components and then comparing the characteristics of each signal with a resolution matched to its scale.However,the challenge is the selection of a proper wavelet since various wavelets with varied properties that are to analyze the same data may result in different results.This article presents a study on how to carry out a comparative analysis based on analytic wavelet scalograms,using structural dynamic acceleration responses,to evaluate the effectiveness of various wavelets for damage detection in civil structures.The scalogram’s informative time-frequency regions are examined to analyze the variation of wavelet coefficients and show how the frequency content of a signal changes over time to detect transient events due to damage.Subsequently,damage-induced changes are tracked with time-frequency representations.Towards this aim,energy distribution and sharing information are investigated.The undamaged and damaged simulated comparative results of a structure reveal that the damaged structure were shifted from the undamaged structure.Also,the Bump wavelet shows the best results than the others. | Ahmed Silik Mohammad Noori Wael A.Altabey Ramin Ghiasi Zhishen Wu | 2021 | Structural Durability & Health Monitoring2021，15，1： | 4 |
| 2 | Strain Transfer Mechanism of Grating Ends Fiber Bragg Grating for Structural Health Monitoring显示文摘The grating ends bonding fiber Bragg grating(FBG)sensor has been widely used in sensor packages such as substrate type and clamp type for health monitoring of large structures.However,owing to the shear deformation of the adhesive layer of FBG,the strain measured by FBG is often different from the strain of actual matrix,which causes strain measurement errors.This investigation aims at improving the measurement accuracy of strain for the grating ends surface-bonded FBG.To fulfill this objective,a strain transfer equation of the grating ends bonding FBG is derived,and a theoretical model of the average strain transfer from the matrix to the optical fiber is developed.Moreover,parameters that influence the average strain transfer rate from the matrix to the optical fiber are analyzed.A selection scheme of bonding parameters by numerical simulation is provided,which is significantly advantageous over that of the grating bonding FBG.The theoretical equation is verified by finite element method(FEM).Compared with the existing model,the proposed model has higher measurement accuracy.Experimental tests are performed to validate the effectiveness of the proposed model on the equalintensity cantilever beam,whose surface is attached to the bare FBG with grating ends bonding and strain gauge by using epoxy glue.The results show that there is a great agreement between the outcome of the bare FBG and that of the strain gauge,and the corrected strain is closer to the true strain.The proposed model provides a theoretical basis for the design of the grating ends surface-bonded FBG strain sensor for health monitoring of large structures. | Guang Chen Keqin Ding Qibo Feng Xinran Yin Fangxiong Tang | 2019 | Structural Durability & Health Monitoring2019，13，3： | 4 |
| 3 | Distribution and sources of polycyclic aromatic hydrocarbons in Wuhan section of the Yangtze River, China显示文摘 | Chenglian Feng Xinghui Xia Zhenyao Shen Zhui Zhou | 2007 | Environmental Monitoring and Assessment (-)2007，，1： | 2 |
| 4 | Availability and Assessment of Fixing Additives for The in Situ Remediation of Heavy Metal Contaminated Soils: A Review显示文摘 | Guanlin Guo Qixing Zhou Lene Q. Ma | 2006 | Environmental Monitoring and Assessment2006，，1： | 2 |
| 5 | Global Grids from Recursive Diamond Subdivisions of the Surface of an Octahedron or Icosahedron显示文摘 | Denis White | 2000 | Environmental Monitoring and Assessment2000，，1： | 2 |
| 6 | Seasonal variations in the relationship between landscape pattern and land surface temperature in Indianapolis, USA显示文摘 | Hua Liu Qihao Weng | 2008 | Environmental Monitoring and Assessment2008，，1： | 2 |
| 7 | Determination of marine gamma activity and study of the minimum detectable activity (MDA) in 4pi geometry based on Monte Carlo simulation显示文摘 | C. Bagatelas C. Tsabaris M. Kokkoris C. T. Papadopoulos R. Vlastou | 2010 | Environmental Monitoring and Assessment . 2010 (1-4)2010，，1： | 2 |
| 8 | The influence of ENSO on global temperatures 显示文摘 | Jones P D | 1988 | Climate Monitor1988，17，3： | 2 |
| 9 | Endotracheal tube cuff-small important part of a big issue显示文摘 | Shai Efrati Israel Deutsch Gabriel M. Gurman | 2012 | Journal of Clinical Monitoring and Computing2012，，1： | 2 |
| 10 | Affects of mining activities on Cd pollution to the paddy soils and rice grain in Hunan province, Central South China显示文摘 | Yan Du Xue-Feng Hu Xiao-Hong Wu Ying Shu Ying Jiang Xiao-Juan Yan | 2013 | Environmental Monitoring and Assessment2013，，12： | 2 |
| 11 | Spatial analysis for spring bloom and nutrient limitation in Xiangxi bay of three Gorges Reservoir显示文摘 | L. Ye X. Q. Han Y. Y. Xu Q. H. Cai | | Environmental Monitoring and Assessment (-)0，，： | 2 |
| 12 | Techniques and methods for the determination of haloacetic acids in potable water显示文摘 | Edward T Urbansky | 2000 | Journal of environmental monitoring2000，2，4： | 2 |
| 13 | Using vibration phase space topology changes for structural damage detection显示文摘 | Zhenhua Nie Hong Hao Hongwei Ma | 2012 | Structural Health Monitoring2012，，5： | 2 |
| 14 | Cardiac output and circulating blood volume analysis by pulse dye-densitometry显示文摘 | Takehiko Iijima Takuo Aoyagi Yasuhide Iwao Junichi Masuda Masayoshi Fuse Naoki Kobayashi Hiroshi Sankawa | 1997 | Journal of Clinical Monitoring1997，，2： | 2 |
| 15 | Occurrence and dissipation of veterinary antibiotics in two typical swine wastewater treatment systems in east China显示文摘 | Yongshan Chen Haibo Zhang Yongming Luo Jing Song | 2012 | Environmental Monitoring and Assessment2012，，4： | 2 |
| 16 | Passive and hybrid control systems for seismic protection of a benchmark cable-stayed bridge 显示文摘 | He W L Aqrawal A K | 2007 | Structural Control and Health Monitoring2007，14，1： | 1 |
| 17 | Characteristics of and Human Influences on Nitrogen Contamination in Yellow River System, China 显示文摘 | Jingsheng Chen Dawei He Na Zhang | 2004 | Environmental Monitoring and Assessment2004，93，： | 1 |
| 18 | Assessment of metal contamination in donana national park (spain) using crayfish (proeamburus elarkia) 显示文摘 | Sanchez Lopez F J Gil Garcia M D Martinez Vidal J | 2004 | Environmental Monitoring and Assessment2004，，93： | 1 |
| 19 | A regional assessment of windbreak habitat suitability显示文摘 | HESS G R BAY J M | 2000 | Environm Monitor Assess2000，6，12： | 1 |
| 20 | An investigation of the origin and mobility of phosphorus in freshwater sediments from Bort-Les-Orgues Reservoir,France显示文摘 | Ruban V Brigault S Demare D | 1999 | Journal of Environmental Monitoring1999，1，4： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员