Pub Date : 1900-01-01DOI: 10.32604/sdhm.2023.011439
Yazeed Al-Radhi, F. Hejazi, Azmi Abdulkarim, Ali Feroozi
{"title":"Assessment of Aged Offshore Jacket Type Platforms Considering Environmental Loads and Degradation Parameters","authors":"Yazeed Al-Radhi, F. Hejazi, Azmi Abdulkarim, Ali Feroozi","doi":"10.32604/sdhm.2023.011439","DOIUrl":"https://doi.org/10.32604/sdhm.2023.011439","url":null,"abstract":"","PeriodicalId":236903,"journal":{"name":"Structural Durability & Health Monitoring","volume":"102 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":"115364813","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}
Pub Date : 1900-01-01DOI: 10.32604/sdhm.2022.017458
Alireza Doustvandi, M. Tahamouli Roudsari, Behnoush Niazi
{"title":"Experimental Investigation on the Effect of Seal Presence on the Behavior of Double-Deck Floating Roofs in Cylindrical Steel Storage Tanks","authors":"Alireza Doustvandi, M. Tahamouli Roudsari, Behnoush Niazi","doi":"10.32604/sdhm.2022.017458","DOIUrl":"https://doi.org/10.32604/sdhm.2022.017458","url":null,"abstract":"","PeriodicalId":236903,"journal":{"name":"Structural Durability & Health Monitoring","volume":"112 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":"132787639","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}
Pub Date : 1900-01-01DOI: 10.32604/sdhm.2022.021257
D. Su, Zizheng Jia, Q. Zhu, Zheng Li, Banghong Chen, D. Zheng
{"title":"Numerical Study on Mechanism of Blast-Induced Damage Considering Guiding Effect of Water Jet Slot","authors":"D. Su, Zizheng Jia, Q. Zhu, Zheng Li, Banghong Chen, D. Zheng","doi":"10.32604/sdhm.2022.021257","DOIUrl":"https://doi.org/10.32604/sdhm.2022.021257","url":null,"abstract":"","PeriodicalId":236903,"journal":{"name":"Structural Durability & Health Monitoring","volume":"16 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":"133234772","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}
Pub Date : 1900-01-01DOI: 10.32604/sdhm.2022.010397
Longyu Zhang, Jim J. Zhu
{"title":"Numerical Simulation and Field Monitoring Analysis for Deep Foundation Pit Construction of Subway Station","authors":"Longyu Zhang, Jim J. Zhu","doi":"10.32604/sdhm.2022.010397","DOIUrl":"https://doi.org/10.32604/sdhm.2022.010397","url":null,"abstract":"","PeriodicalId":236903,"journal":{"name":"Structural Durability & Health Monitoring","volume":"10 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":"124158947","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}
Pub Date : 1900-01-01DOI: 10.32604/sdhm.2022.015097
J. Shao, Jiao Ma, Renlong Liu, Ye Liu, Pu Zhang, Yi Tang, Yunjun Huang
{"title":"Experimental Investigation on Fracture Performance of Short Basalt Fiber Bundle Reinforced Concrete","authors":"J. Shao, Jiao Ma, Renlong Liu, Ye Liu, Pu Zhang, Yi Tang, Yunjun Huang","doi":"10.32604/sdhm.2022.015097","DOIUrl":"https://doi.org/10.32604/sdhm.2022.015097","url":null,"abstract":"","PeriodicalId":236903,"journal":{"name":"Structural Durability & Health Monitoring","volume":"11 10 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":"128824669","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}
Pub Date : 1900-01-01DOI: 10.32604/sdhm.2023.018632
P. Geng, Ji Lu, Hongtao Ma, Guiyi Yang
{"title":"Crack Segmentation Based on Fusing Multi-Scale Wavelet and Spatial-Channel Attention","authors":"P. Geng, Ji Lu, Hongtao Ma, Guiyi Yang","doi":"10.32604/sdhm.2023.018632","DOIUrl":"https://doi.org/10.32604/sdhm.2023.018632","url":null,"abstract":"","PeriodicalId":236903,"journal":{"name":"Structural Durability & Health Monitoring","volume":"20 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":"115981968","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}
Pub Date : 1900-01-01DOI: 10.32604/sdhm.2022.023583
Gang Liu, Xinqi Chen, Lijuan Bao, Linbo Xu, Chaochao Dai, Lei Yang, Chengming Wang
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.
{"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}
Pub Date : 1900-01-01DOI: 10.32604/sdhm.2023.022317
Yuling He, Shuai Li, Chao Zhang, Xiaolong Wang
{"title":"A Fault Feature Extraction Model in Synchronous Generator under Stator Inter-Turn Short Circuit Based on ACMD and DEO3S","authors":"Yuling He, Shuai Li, Chao Zhang, Xiaolong Wang","doi":"10.32604/sdhm.2023.022317","DOIUrl":"https://doi.org/10.32604/sdhm.2023.022317","url":null,"abstract":"","PeriodicalId":236903,"journal":{"name":"Structural Durability & Health Monitoring","volume":"19 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":"132337207","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}
Pub Date : 1900-01-01DOI: 10.32604/sdhm.2023.025977
Long Zhao, Xudong Lu, Xinbo Huang, Hao Yang, Guoze Feng
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.
{"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}
Pub Date : 1900-01-01DOI: 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
{"title":"Development of Features for Early Detection of Defects and Assessment of Bridge Decks","authors":"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","doi":"10.32604/sdhm.2023.023617","DOIUrl":"https://doi.org/10.32604/sdhm.2023.023617","url":null,"abstract":"","PeriodicalId":236903,"journal":{"name":"Structural Durability & Health Monitoring","volume":"71 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":"122579885","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}
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