Jie Liu, Yang Wei, Qi Zhao, Yirui Zhang, Kaiqi Zheng
{"title":"海水暴露后 FRP-钢粘接接头的疲劳诱发断裂评估","authors":"Jie Liu, Yang Wei, Qi Zhao, Yirui Zhang, Kaiqi Zheng","doi":"10.1016/j.istruc.2024.107209","DOIUrl":null,"url":null,"abstract":"This paper investigates fatigue durability of FRP-steel double-lap shear bonded structure in seawater environment. Three simulated environments (original-salinity seawater dry-wet cycle, triple-salinity seawater dry-wet cycle, and triple-salinity seawater immersion) with 30-, 60-, and 90-day maintenance duration are tested. Experimental results indicate that both the quasit-static and fatigue strength are degraded by the seawater maintenance, and longer maintenance will lead to continued deterioration of the bonded joints. The failure/damage of bonded joints primarily originates from the bonding failure in the docking zone and extend towards the two ends. For a specific bonded joint, the load amplitude (∆) and cycle number () can be approximated fitted by a linear logarithmic curve. Based on this observation, a prediction model of the cycle number () for the bonded joints is proposed, and comparison demonstrated that the prediction model can effectively assess the fatigue strength of GFRP-steel double-lap shear bonded joints after seawater maintenance. The findings of this study can offer both theoretical and experimental foundations for assessing the durability of FRP-steel bonded structures in seawater corrosion environments.","PeriodicalId":48642,"journal":{"name":"Structures","volume":null,"pages":null},"PeriodicalIF":3.9000,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Fatigue-induced fracture assessment for FRP-steel bonding joints after seawater exposure\",\"authors\":\"Jie Liu, Yang Wei, Qi Zhao, Yirui Zhang, Kaiqi Zheng\",\"doi\":\"10.1016/j.istruc.2024.107209\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper investigates fatigue durability of FRP-steel double-lap shear bonded structure in seawater environment. Three simulated environments (original-salinity seawater dry-wet cycle, triple-salinity seawater dry-wet cycle, and triple-salinity seawater immersion) with 30-, 60-, and 90-day maintenance duration are tested. Experimental results indicate that both the quasit-static and fatigue strength are degraded by the seawater maintenance, and longer maintenance will lead to continued deterioration of the bonded joints. The failure/damage of bonded joints primarily originates from the bonding failure in the docking zone and extend towards the two ends. For a specific bonded joint, the load amplitude (∆) and cycle number () can be approximated fitted by a linear logarithmic curve. Based on this observation, a prediction model of the cycle number () for the bonded joints is proposed, and comparison demonstrated that the prediction model can effectively assess the fatigue strength of GFRP-steel double-lap shear bonded joints after seawater maintenance. The findings of this study can offer both theoretical and experimental foundations for assessing the durability of FRP-steel bonded structures in seawater corrosion environments.\",\"PeriodicalId\":48642,\"journal\":{\"name\":\"Structures\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2024-08-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Structures\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1016/j.istruc.2024.107209\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CIVIL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Structures","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.istruc.2024.107209","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
Fatigue-induced fracture assessment for FRP-steel bonding joints after seawater exposure
This paper investigates fatigue durability of FRP-steel double-lap shear bonded structure in seawater environment. Three simulated environments (original-salinity seawater dry-wet cycle, triple-salinity seawater dry-wet cycle, and triple-salinity seawater immersion) with 30-, 60-, and 90-day maintenance duration are tested. Experimental results indicate that both the quasit-static and fatigue strength are degraded by the seawater maintenance, and longer maintenance will lead to continued deterioration of the bonded joints. The failure/damage of bonded joints primarily originates from the bonding failure in the docking zone and extend towards the two ends. For a specific bonded joint, the load amplitude (∆) and cycle number () can be approximated fitted by a linear logarithmic curve. Based on this observation, a prediction model of the cycle number () for the bonded joints is proposed, and comparison demonstrated that the prediction model can effectively assess the fatigue strength of GFRP-steel double-lap shear bonded joints after seawater maintenance. The findings of this study can offer both theoretical and experimental foundations for assessing the durability of FRP-steel bonded structures in seawater corrosion environments.
期刊介绍:
Structures aims to publish internationally-leading research across the full breadth of structural engineering. Papers for Structures are particularly welcome in which high-quality research will benefit from wide readership of academics and practitioners such that not only high citation rates but also tangible industrial-related pathways to impact are achieved.