Prediction of creep crack growth for modified 9CR-1MO at 600°C

Nak Hyun Kim, Yun Jae Kim, Woo Gon Kim, Hyeong Yeon Lee

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

Abstract

This paper introduce theoretical creep crack growth prediction model and provides experimental validation of the approach for simulating creep crack growth using finite element analysis method, recently proposed by the authors. The FE creep damage model is based on the creep ductility exhaustion concept, and incremental damage is defined by the ratio of incremental creep strain and multi-axial creep ductility. A simple linear damage summation rule is applied. When accumulated damage becomes unity, element stresses are reduced to zero to simulate progressive crack growth. For validation, simulated results are compared with experimental data for a compact tension specimen of modified 9Cr-1Mo at 600°C under various loading levels. The simulated results agree well with experimental C*-da/dt data. The test data are also compared with theoretical CCG prediction model.

Original languageEnglish
Title of host publicationASME 2012 Pressure Vessels and Piping Conference, PVP 2012
Pages331-337
Number of pages7
DOIs
Publication statusPublished - 2012 Dec 1
Externally publishedYes
EventASME 2012 Pressure Vessels and Piping Conference, PVP 2012 - Toronto, ON, Canada
Duration: 2012 Jul 152012 Jul 19

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume3
ISSN (Print)0277-027X

Conference

ConferenceASME 2012 Pressure Vessels and Piping Conference, PVP 2012
CountryCanada
CityToronto, ON
Period12/7/1512/7/19

ASJC Scopus subject areas

  • Mechanical Engineering

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  • Cite this

    Kim, N. H., Kim, Y. J., Kim, W. G., & Lee, H. Y. (2012). Prediction of creep crack growth for modified 9CR-1MO at 600°C. In ASME 2012 Pressure Vessels and Piping Conference, PVP 2012 (pp. 331-337). (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 3). https://doi.org/10.1115/PVP2012-78160