Estimation of C(t) -Integral under transient creep conditions for a cracked pipe subjected to combined mechanical and thermal loads depending on loading conditions

Chang Young Oh, Tae Kwang Song, Yun Jae Kim

Research output: Contribution to journalArticle


There is a trend towards the progressive use of higher operating temperatures and stresses to achieve improved efficiencies in power-generation equipment. It is important to perform the crack assessment under high-temperature and high-pressure conditions. The C(t)-integral is a key parameter in crack assessment for transient creep states. The estimation of the C(t)-integral is complex when considering the mechanical and thermal loads simultaneously. In this paper, we study estimation of C(t)-integral under combined mechanical and thermal load depending on loading conditions

Original languageEnglish
Pages (from-to)609-617
Number of pages9
JournalTransactions of the Korean Society of Mechanical Engineers, A
Issue number6
Publication statusPublished - 2011 Jun 1
Externally publishedYes



  • C(t)-Integral
  • Combined mechanical and thermal load
  • Crack
  • Elastic creep
  • Elastic-Plastic creep
  • Stress ratio
  • Transient creep conditiona

ASJC Scopus subject areas

  • Mechanical Engineering

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