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

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

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトルASME 2012 Pressure Vessels and Piping Conference, PVP 2012
ページ331-337
ページ数7
DOI
出版ステータスPublished - 2012 12月 1
外部発表はい
イベントASME 2012 Pressure Vessels and Piping Conference, PVP 2012 - Toronto, ON, Canada
継続期間: 2012 7月 152012 7月 19

出版物シリーズ

名前American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
3
ISSN(印刷版)0277-027X

Conference

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

ASJC Scopus subject areas

  • 機械工学

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