Structural Durability & Health Monitoring最新文献

Assessment of Aged Offshore Jacket Type Platforms Considering Environmental Loads and Degradation Parameters 考虑环境载荷和退化参数的海上导管架型平台老化评价

Structural Durability & Health Monitoring Pub Date : 1900-01-01 DOI: 10.32604/sdhm.2023.011439

Yazeed Al-Radhi, F. Hejazi, Azmi Abdulkarim, Ali Feroozi

引用次数: 0

Experimental Investigation on the Effect of Seal Presence on the Behavior of Double-Deck Floating Roofs in Cylindrical Steel Storage Tanks 密封存在对圆柱钢储罐双层浮顶性能影响的试验研究

Structural Durability & Health Monitoring Pub Date : 1900-01-01 DOI: 10.32604/sdhm.2022.017458

Alireza Doustvandi, M. Tahamouli Roudsari, Behnoush Niazi

引用次数: 0

Numerical Study on Mechanism of Blast-Induced Damage Considering Guiding Effect of Water Jet Slot 考虑水射流槽导向作用的爆炸致伤机理数值研究

Structural Durability & Health Monitoring Pub Date : 1900-01-01 DOI: 10.32604/sdhm.2022.021257

D. Su, Zizheng Jia, Q. Zhu, Zheng Li, Banghong Chen, D. Zheng

引用次数: 0

Numerical Simulation and Field Monitoring Analysis for Deep Foundation Pit Construction of Subway Station 地铁车站深基坑施工数值模拟与现场监测分析

Structural Durability & Health Monitoring Pub Date : 1900-01-01 DOI: 10.32604/sdhm.2022.010397

Longyu Zhang, Jim J. Zhu

引用次数: 0

Experimental Investigation on Fracture Performance of Short Basalt Fiber Bundle Reinforced Concrete 短玄武岩纤维束钢筋混凝土断裂性能试验研究

Structural Durability & Health Monitoring Pub Date : 1900-01-01 DOI: 10.32604/sdhm.2022.015097

J. Shao, Jiao Ma, Renlong Liu, Ye Liu, Pu Zhang, Yi Tang, Yunjun Huang

引用次数: 0

Crack Segmentation Based on Fusing Multi-Scale Wavelet and Spatial-Channel Attention 基于多尺度小波和空间通道注意力融合的裂纹分割

Structural Durability & Health Monitoring Pub Date : 1900-01-01 DOI: 10.32604/sdhm.2023.018632

P. Geng, Ji Lu, Hongtao Ma, Guiyi Yang

引用次数: 0

Weak Fault Detection of Rotor Winding Inter-Turn Short Circuit in Excitation System Based on Residual Interval Observer 基于残差区间观测器的励磁系统转子绕组匝间短路微弱故障检测

Structural Durability & Health Monitoring Pub Date : 1900-01-01 DOI: 10.32604/sdhm.2022.023583

Gang Liu, Xinqi Chen, Lijuan Bao, Linbo Xu, Chaochao Dai, Lei Yang, Chengming Wang

{"title":"Weak Fault Detection of Rotor Winding Inter-Turn Short Circuit in Excitation System Based on Residual Interval Observer","authors":"Gang Liu, Xinqi Chen, Lijuan Bao, Linbo Xu, Chaochao Dai, Lei Yang, Chengming Wang","doi":"10.32604/sdhm.2022.023583","DOIUrl":"https://doi.org/10.32604/sdhm.2022.023583","url":null,"abstract":"Aiming at the fact that the rotor winding inter-turn weak faults can hardly be detected due to the strong electromagnetic coupling effect in the excitation system, an interval observer based on current residual is designed. Firstly, the mechanism of the inter-turn short circuit of the rotor winding in the excitation system is modeled under the premise of stable working conditions, and electromagnetic decoupling and system simplification are carried out through Park Transform. An interval observer is designed based on the current residual in the two-phase coordinate system, and the sensitive and stable conditions of the observer is preset. The fault diagnosis process based on the interval observer is formulated, and the observer gain matrix is convexly optimized by linear matrix inequality. The numerical simulation and experimental results show that the inter-turn short circuit weak fault is hardly detected directly through the current signal, but the fault is quickly and accurately diagnosed through the residual internal observer. Compared with the traditional fault diagnosis method based on excitation current, the diagnosis speed and accuracy are greatly improved, and the probability of misdiagnosis also decreases. This method provides a theoretical basis for weak fault identification of excitation systems, and is of great significance for the operation and maintenance of excitation systems.","PeriodicalId":236903,"journal":{"name":"Structural Durability & Health Monitoring","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131523093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Fault Feature Extraction Model in Synchronous Generator under Stator Inter-Turn Short Circuit Based on ACMD and DEO3S 基于ACMD和DEO3S的同步发电机定子匝间短路故障特征提取模型

Structural Durability & Health Monitoring Pub Date : 1900-01-01 DOI: 10.32604/sdhm.2023.022317

Yuling He, Shuai Li, Chao Zhang, Xiaolong Wang

引用次数: 1

Research on Breeze Vibration Law and Modal Identification Method of Conductor Considering Anti-Vibration Hammer Damage 考虑抗振锤损伤的导线微风振动规律及模态识别方法研究

Structural Durability & Health Monitoring Pub Date : 1900-01-01 DOI: 10.32604/sdhm.2023.025977

Long Zhao, Xudong Lu, Xinbo Huang, Hao Yang, Guoze Feng

{"title":"Research on Breeze Vibration Law and Modal Identification Method of Conductor Considering Anti-Vibration Hammer Damage","authors":"Long Zhao, Xudong Lu, Xinbo Huang, Hao Yang, Guoze Feng","doi":"10.32604/sdhm.2023.025977","DOIUrl":"https://doi.org/10.32604/sdhm.2023.025977","url":null,"abstract":"In the harsh environment, the structural health of the anti-vibration hammer, which suffers from the coupled effects of corrosion and fatigue damage, is significantly reduced. As part of the conductor structure, the anti-vibration hammer is rigidly attached to the conductor, effectively suppressing conductor vibration. The conductor’s breeze vibration law and natural modal frequency are altered damage to the anti-vibration hammer structure. Through built a vibration experiment platform to simulate multiple faults such as anti-vibration hammer head drop off and position slippage, which to obtained the vibration acceleration signal of the conductor. The acceleration vibration signal is processed and analyzed in the time and frequency domains. The results are used to derive the breeze vibration law of the conductor under multiple faults and propose an anti-vibration hammer damage online monitoring technology. The results show that the vibration acceleration value and vibration intensity of the conductor are significantly increased after the anti-vibration hammer damage. The natural frequency increases for each order, with an absolute change ranging from 0.15 to 6.49 Hz. The anti-vibration hammer slipped due to a loose connection, the 1st natural frequency increases from 8.18 to 16.62 Hz. Therefore, in engineering applications, there can be no contact to determine the anti-vibration hammer damage situation by monitoring the modal natural frequency of the conductor. This is even a tiny damage that cannot be seen. This method will prevent the further expansion of the damage that can cause accidents.","PeriodicalId":236903,"journal":{"name":"Structural Durability & Health Monitoring","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116065334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of Features for Early Detection of Defects and Assessment of Bridge Decks 桥面缺陷早期检测与评估特征的发展

Structural Durability & Health Monitoring Pub Date : 1900-01-01 DOI: 10.32604/sdhm.2023.023617

A. Silik, Xiaodong Wang, Chenyue Mei, Xiao-bin Jin, Xudong Zhou, Wei Zhou, Congning Chen, Weixing Hong, Jiawei Li, Mingjie Mao, Yuhan Liu, Mohammad N. Noori, Wael A. Altabey

引用次数: 0

Structural Durability &amp; Health Monitoring最新文献

Structural Durability & Health Monitoring最新文献