NDLI: Prediction of Creep Crack Growth for Modified 9Cr-1Mo at 600°C

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Kim, Nak Hyun Kim, Yun Jae Kim, Woo Gon Lee, Hyeong Yeon
Copyright Year	2012
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.
Sponsorship	Pressure Vessels and Piping Division
Starting Page	331
Ending Page	337
Page Count	7
File Format	PDF
ISBN	9780791855027
DOI	10.1115/PVP2012-78160
Volume Number	Volume 3: Design and Analysis
Conference Proceedings	ASME 2012 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2012-07-15
Publisher Place	Toronto, Ontario, Canada
Access Restriction	Subscribed
Subject Keyword	Creep Ductility Tension Fracture (materials) Finite element analysis Damage Stress
Content Type	Text
Resource Type	Article

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