Scholarlink

<p>In an earlier publication by the present authors, spatial and directional variations in material properties in a fabricated component were quantified using the results of miniature tensile specimens. The real-life applications of such material property variations are presented in this work. Specifically, the changes in the failure energy of a fastener and the burst pressure of a pipe are calculated, taking into account these directional and spatial variations in material properties. Two nuclear-grade materials are considered: SA333Gr6 and 20MnMoNi55 structural steels. Cohesive zone modeling is used to capture material damage near the failure of the components. The first case study, which examines fastener failure, shows wider variations in failure energy for the SA333 Gr6 material compared to 20MnMoNi55. Similar conclusions are drawn regarding the burst pressure variations of a pipe. These case studies underscore the importance of accounting for directional and spatial variations in material properties within a fabricated nuclear component. Such quantitative information aids designers in conducting conservative designs with appropriate safety margins and also performing structural integrity analyses considering that consider the weakest orientation of a crack in a plant component as is done in case of Leak-Before-Break evaluations of piping systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Directional and Spatial Dependency of Fastener Failure Energy and Pipe Burst Pressure in Fabricated Components

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月19日

查看全文
  • Viswa Teja Vanapalli,
  • B. K. Dutta,
  • J. Chattopadhyay

摘要

In an earlier publication by the present authors, spatial and directional variations in material properties in a fabricated component were quantified using the results of miniature tensile specimens. The real-life applications of such material property variations are presented in this work. Specifically, the changes in the failure energy of a fastener and the burst pressure of a pipe are calculated, taking into account these directional and spatial variations in material properties. Two nuclear-grade materials are considered: SA333Gr6 and 20MnMoNi55 structural steels. Cohesive zone modeling is used to capture material damage near the failure of the components. The first case study, which examines fastener failure, shows wider variations in failure energy for the SA333 Gr6 material compared to 20MnMoNi55. Similar conclusions are drawn regarding the burst pressure variations of a pipe. These case studies underscore the importance of accounting for directional and spatial variations in material properties within a fabricated nuclear component. Such quantitative information aids designers in conducting conservative designs with appropriate safety margins and also performing structural integrity analyses considering that consider the weakest orientation of a crack in a plant component as is done in case of Leak-Before-Break evaluations of piping systems.