Fatigue & Fracture of Engineering Materials & Structures最新文献

筛选

英文中文

A comparative study of several life prediction models based on the critical plane approach for fretting fatigue crack initiation 基于临界面法的几种疲劳裂纹起始寿命预测模型的比较研究

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-02-06 DOI: 10.1111/ffe.14256

Yiliang Shu, Guangxue Yang, Zhiming Liu, Weigang Hu

引用次数: 0

Fatigue performance of riser quality girth welds: Analysis of TWI and DNV's databases 立管优质环缝焊缝的疲劳性能：对 TWI 和 DNV 数据库的分析

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-02-01 DOI: 10.1111/ffe.14248

Carol Johnston, Agnes Marie Horn

{"title":"Fatigue performance of riser quality girth welds: Analysis of TWI and DNV's databases","authors":"Carol Johnston, Agnes Marie Horn","doi":"10.1111/ffe.14248","DOIUrl":"https://doi.org/10.1111/ffe.14248","url":null,"abstract":"In the fatigue design guidelines which focus on welded joints, when the applied loading is of variable amplitude (variable amplitude loading, VAL), the slope of the S‐N curves at endurances above the slope transition point (STP) changes from m to m + 2 in DNV‐RP‐C203 and BS7608. However, the position of the STP is different in BS7608 and DNV RP C203. This results in different calculated fatigue lives and the difference in calculated fatigue life can be significant. In order to provide better guidance to industry on the approach to use for fatigue analysis of girth welds in pipelines and risers specifically, TWI and DNV carried out a project where the ultimate aim was to provide guidance on a common S‐N curve suitable for calculating the fatigue life of girth welds with focus on the slope change area of the S‐N curves. This was attempted by re‐analyzing TWI's and DNV's databases of girth weld fatigue test results and comparing the outcomes. Although it was not possible to agree on a single STP from the analysis carried out, regression analysis of high endurance results from the databases suggest that an STP between the two current values 1E7 and 5E7 may be plausible. This is supported by fracture mechanics analysis, which suggests that the position of the STP depends on the fatigue Class, and the magnitude of the applied stress ranges.","PeriodicalId":509125,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139814746","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

首页上一页

Fatigue &amp; Fracture of Engineering Materials &amp; Structures最新文献

Fatigue & Fracture of Engineering Materials & Structures最新文献