Crack branching and its effect on environmentally assisted cracking in high temperature water environments

Zhanpeng Lu, He Xue, Tetsuo Shoji

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

4 Citations (Scopus)

Abstract

Crack kinking or branching has been observed in laboratory stress corrosion cracking tests and in some components suffering from stress corrosion cracking in nuclear power plant coolants. There are several types of crack branching: i.e., macroscopic multiple branching cracks, local crack branching or the combination of both. Crack branching affects the crack tip stress/strain distribution in terms of stress intensity factor and crack tip strain rate, and consequently affects crack growth behavior. The crack tip mechanical fields in some typical crack branching systems are quantified using empirical, analytical and numerical simulation methods. The effect of crack branching is less significant in contoured double cantilever beam specimens than in compact tension specimens for the same size and configuration of branched cracks. The applications of the analysis results to some observed crack branching phenomena of austenitic alloys in high temperature water environments are discussed based on the theoretical crack growth rate formulation.

Original languageEnglish
Title of host publicationASME 2010 Pressure Vessels and Piping Division/K-PVP Conference, PVP2010
Pages917-927
Number of pages11
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

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume1
ISSN (Print)0277-027X

Other

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

ASJC Scopus subject areas

  • Mechanical Engineering

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