An estimation of C(t) of transient creep under combined mechanical and thermal stresess

Chang Young Oh, Tae Kwang Song, Yun-Jae Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, a prediction of C(t), a crack tip parameter for the transient creep condition, for the circumferential cracked pipe under combined mechanical and thermal stresses are presented. The estimation formulae for C(t)-integral of the cracked component operating under mechanical load alone have been provided for decades [1-6]. However, high temperature structures usually work under combined mechanical and thermal load. And the interactions between mechanical and thermal loads make the relaxation rate different from those produced under mechanical load alone. In this study, 3-dimensional finite element analyses are conducted to calculate the C(t)-integral under combined mechanical and thermal load. As a result, redistribution time for the crack under combined mechanical and thermal load is re-defined to quantify the C(t)-integral. The estimation of C(t)-integral using this proposed redistribution time agrees well with FE results.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Pages403-409
Number of pages7
Volume5
DOIs
Publication statusPublished - 2010 Dec 1
EventASME 2010 Pressure Vessels and Piping Division/K-PVP Conference, PVP2010 - Bellevue, WA, United States
Duration: 2010 Jul 182010 Jul 22

Other

OtherASME 2010 Pressure Vessels and Piping Division/K-PVP Conference, PVP2010
CountryUnited States
CityBellevue, WA
Period10/7/1810/7/22

Fingerprint

Thermal load
Creep
Thermal stress
Crack tips
Pipe
Cracks
Hot Temperature
Temperature

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Oh, C. Y., Song, T. K., & Kim, Y-J. (2010). An estimation of C(t) of transient creep under combined mechanical and thermal stresess. In American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP (Vol. 5, pp. 403-409) https://doi.org/10.1115/PVP2010-25372

An estimation of C(t) of transient creep under combined mechanical and thermal stresess. / Oh, Chang Young; Song, Tae Kwang; Kim, Yun-Jae.

American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Vol. 5 2010. p. 403-409.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Oh, CY, Song, TK & Kim, Y-J 2010, An estimation of C(t) of transient creep under combined mechanical and thermal stresess. in American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. vol. 5, pp. 403-409, ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference, PVP2010, Bellevue, WA, United States, 10/7/18. https://doi.org/10.1115/PVP2010-25372
Oh CY, Song TK, Kim Y-J. An estimation of C(t) of transient creep under combined mechanical and thermal stresess. In American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Vol. 5. 2010. p. 403-409 https://doi.org/10.1115/PVP2010-25372
Oh, Chang Young ; Song, Tae Kwang ; Kim, Yun-Jae. / An estimation of C(t) of transient creep under combined mechanical and thermal stresess. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Vol. 5 2010. pp. 403-409
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