An inverse method for the determination of thermal stress-intensity factors under arbitrary thermal-shocks

J. Meeker, Albert Eliot Segall, E. Gondar

Research output: Contribution to journalArticle

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Abstract

The analysis of stress-intensity factors is of immense importance when designing vessels, pipes, and end-caps as well as supporting structures and plates seen in high-temperature applications. Given this importance and the difficulty of measuring actual thermal boundary conditions, a generalized series based on a new and infinitely-differentiate polynomial was employed to inversely determine the transient temperature distribution in a semi-infinite slab using only a single temperature history. These temperature distributions were in turn used to find the potential crack-opening stresses throughout the body. Using the found stresses and a weight-function approach, stress-intensity factors were then determined for both edge and semi-elliptical cracks under an arbitrary thermal-shock. When compared to other methods for various thermal scenarios, the method showed good agreement for both edge- and semi-elliptical surface cracks.

Original languageEnglish (US)
Pages (from-to)412061-412068
Number of pages8
JournalJournal of Pressure Vessel Technology, Transactions of the ASME
Volume130
Issue number4
DOIs
Publication statusPublished - Nov 1 2008

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All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering

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