English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Girth welded joints of pipelines may possibly contain defects which could reduce the fatigue strength of the joints under earthquake conditions. Hence it is necessary to identify the fatigue properties of the joints containing various defects and clarify the acceptable size of weld defects.In this study, very low cycle fatigue tests and fatigue life estimation by fracture mechanics analysis of butt welded joints containing defects were carried out. The influence of plate thickness ranging from 9mm to 19mm on fatigue properties and the acceptable defect size in the welded joints were investigated. It was recognized that the fatigue life for the thickness of 19mm is shorter than that for the thickness of 9mm when the ratio of defect size to thickness is constant. The acceptable defect size in the welds under the earthquake conditions prescribed by the Japan Gas Association, namely, the strain amplitude of 0.5% for 50cycles of cyclic displacement, is proposed as a result of the analysis.

yōsetsu gakkai ronbunshū/yosetsu gakkai ronbunshu

Influence of Plate Thickness on Very Low Cycle Fatigue Properties of Butt Welded Joints Containing Weld Defects. Study on Acceptable Size of Defects in Girth Welds of Gas Pipelines. 2nd Report.